This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
OutputsPHONES (stereo mini jack): accepts headphones of 8 Ω or moreSPEAKER: accepts impedance of 6 to 16 ΩSUB WOOFER OUT (HCD-GT55/GT44 only): accepts impedance of 6 to 16 Ω
CD player sectionSystem: Compact disc and digital audio systemLaser: Semiconductor laser (λ=770 – 810 nm)Emission duration: continuousFrequency response: 20 Hz – 20 kHzSignal-to-noise ratio: More than 90 dBDynamic range: More than 88 dB
2
HCD-GT22/GT44/GT55
Notes on chip component replacement• Never reuse a disconnected chip component.• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing• Keep the temperature of the soldering iron around 270 ˚C
during repairing.• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).• Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous radiationexposure.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINEWITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND INTHE PARTS LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SONY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL ORIN SUPPLEMENTS PUBLISHED BY SONY.
is classified as a CLASS 1 LASER product. This marking is located on the rear exterior.
This appliance
Tape deck sectionRecording system: 4-track 2-channel, stereoFrequency response: 50 – 13,000 Hz (±3 dB), using Sony TYPE I cassettes
2. GENERAL ................................................................... 6
3. DISASSEMBLY3-1. Disassembly Flow ........................................................... 73-2. Case (Side-L), Case (Side-R) .......................................... 83-3. Case (Top) ....................................................................... 83-4. Lid (CD) .......................................................................... 93-5 CD Mechanism Deck
(CDM74KF-K6BD91UR-WOD), USB board ................ 93-6. Front Panel Block ............................................................ 103-7. Mecha Deck (CWN42FF609) ......................................... 103-8. Back Panel Block ............................................................ 113-9. MAIN Board .................................................................... 113-10. CD Board ......................................................................... 123-11. DRIVER Board, SW Board ............................................. 123-12. Optical Pick-up Block (KSM-213D) ............................... 133-13. SENSOR Board ............................................................... 133-14. MOTOR (TB) Board ....................................................... 143-15. MOTOR (LD) Board ....................................................... 14
4. TEST MODE .............................................................. 15
• AbbreviationAR : Argentina modelAUS : Australian modelE2 : 120V AC Area in E modelE3 : 240V AC Area in E modelE13 : 220V - 230V AC Area in E modelE51 : Chilean and Peruvian modelsMX : Mexican model
SECTION 1SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostaticbreak-down because of the potential difference generated by thecharged electrostatic load, etc. on clothing and the human body.During repair, pay attention to electrostatic break-down and alsouse the procedure in the printed matter which is included in therepair parts.The flexible board is easily damaged and should be handled withcare.
NOTES ON LASER DIODE EMISSION CHECKThe laser beam on this model is concentrated so as to be focused onthe disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission,observe from more than 30 cm away from the objective lens.
UNLEADED SOLDERBoards requiring use of unleaded solder are printed with the lead-free mark (LF) indicating the solder contains no lead.(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARKUnleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higherthan ordinary solder.Ordinary soldering irons can be used but the iron tip has to beapplied to the solder joint for a slightly longer time.Soldering irons using a temperature regulator should be set toabout 350 °C.Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)than ordinary solder so use caution not to let solder bridgesoccur such as on IC pins, etc.
• Usable with ordinary solderIt is best to use only unleaded solder but unleaded solder mayalso be added to ordinary solder.
RELEASING THE ANTITHEFT LOCKThe disc table lock function for the antitheft of an demonstrationdisc in the store is equipped.
Releasing Procedure :1. Press the I/1 button to turn the power on.2. Press the CD button to select “CD”.3. While pressing the x button, press the Z button until
“UNLOCKED” displayed on the fluorescent indicator tube(around 5 seconds).
Note: When “LOCKED” is displayed, the antitheft lock is not released byturning power on/off with the I/1 button.
Power VoltageIndication
5
HCD-GT22/GT44/GT55
SERVICE POSITIONIn checking the CD mechanism deck, prepare jig (extension cable J-2501-248-A (27 core/300 mm))/J-2501-077-A (13 core/300 mm)
Connect jig (extension cable J-2501-248-A)to the flexible flat cable (27 core) and CD board (CN202).
MAIN board
CD mechanism deck
Connect jig (extension cable J-2501-077-A)to the flexible flat cable (13 core) and DRIVER board (CN701).
HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF
1 Turn the gear (loading A)to the direction of the arrow.
2
6
HCD-GT22/GT44/GT55SECTION 2GENERAL
This section is extracted frominstruction manual.
UnitHCD-GT55
HCD-GT44/GT22
* HCD-GT44 only
Remote
1
4/1 (on/standby)Press to turn on the system.
Unit: STANDBY indicatorLights up when the system is off.
2
Remote sensor
3
DISPLAYPress to change the information on the display.
Unit: ILLUMINATIONPress to change the illumination pattern around MASTER VOLUME qg.
4
CDPress to select the CD function.
TUNER/BANDPress to select the TUNER function. Press to select FM or AM reception mode.
Unit: TAPE A/BPress to select the TAPE function. Press to select TAPE A or TAPE B.
Unit: AUDIOPress to select the AUDIO function.
USBPress to select the USB function.
Remote: FUNCTIONPress to select the function.
5 (HCD-GT55/GT44 only)SUBWOOFERPress to turn on and off the subwoofer.
SUBWOOFER indicatorLights up when the subwoofer is on.
6
Z PUSHPress to insert or eject a tape.
7
ERASEPress to erase MP3 files and folders from the connected optional USB device (Digital music player or USB storage media).
8
Unit: PRESET EQ, GROOVE, SURROUNDRemote: EQPress to select the sound effect.
9
PLAY MODE/TUNING MODE (HCD-GT55 only)Press to select the play mode of a CD, MP3 disc or an optional USB device (Digital music player or USB storage media).Press to select the tuning mode.
EQ BAND (HCD-GT44/GT22 only) Press to select the frequency band.
q;
PHONES jackConnect the headphones.
qa
AUDIO INPUT L/R jacksConnect to an audio component (Portable audio player, etc.).
qs
(USB) port Connect an optional USB device (Digital music player or USB storage media).
qd
REC/ERASE indicatorLights up when recording to the connected optional USB device (Digital music player or USB storage media), or when erasing MP3 files or folders.
qf
MIC jackConnect an optional microphone.
MIC LEVELTurn to adjust the microphone volume.
qg
Unit: MASTER VOLUMETurn to adjust the volume.
Remote: VOLUME +/–Press to adjust the volume.
qh
OPERATION DIALTurn to select a track, file or folder.
qj
Unit: NX (play/pause)Remote: N (play)X (pause)Press to start or pause playback.
x (stop)Press to stop playback.
./> (go back/go forward) Press to select a track or file.
Unit: TUNING +/–Remote: +/– (tuning)Press to tune in the desired station.
+/– (select folder)Press to select a folder.
m/M (rewind/fast forward) Press to find a point in a track or file.
qk
CD-USB SYNC/REC1Press to record from a disc onto the connected optional USB device (Digital music player or USB storage media).
CD-TAPE SYNCTAPE REC PAUSE/STARTPress to record onto a tape.
ql
Z OPEN/CLOSEPress to insert and eject a disc.
w;
Unit: DISC 1 – 3Press to select a disc. Press to switch to the CD function from other function.
Unit: DISC SKIP/EX-CHANGE Press to select a disc. Press to exchange a disc while playing.
Remote: DISC SKIPPress to select a disc.
wa
RETURNPress to return to the parent folder.Press to exit search mode.
ws
ENTERPress to enter the settings.
wd (HCD-GT55 only)ENTERPress to enter the settings.
+/– (equalizer level)Press to adjust the equalizer level.
wf (HCD-GT55 only)BASSPress to select low frequency. The indicator lights up when the button is pressed.
VOCALPress to select mid frequency. The indicator lights up when the button is pressed.
GUITARPress to select high frequency. The indicator lights up when the button is pressed.
FOCUSPress to emphasize equalizer level of the selected band.
wg
CLOCK/TIMER SELECTCLOCK/TIMER SETPress to set the clock and the timers.
wh
REPEAT/FM MODEPress to listen to a disc, an USB device, a single track or file repeatedly.Press to select the FM reception mode (monaural or stereo).
wj
Battery compartment lid
wk
CLEARPress to delete a pre-programmed track or file.
wl
TUNER MEMORYPress to preset the radio station.
e;
PLAY MODE/TUNING MODE Press to select the play mode of a CD, MP3 disc or an optional USB device (Digital music player or USB storage media).Press to select the tuning mode.
ea
SLEEPPress to set the Sleep Timer.
• Location of Controls
HCD-GT22/GT44/GT55
7
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3DISASSEMBLY
SET
3-2. CASE (SIDE-L), CASE (SIDE-R)(Page 8)
3-3. CASE (TOP)(Page 8)
3-4. LID (CD)(Page 9)
3-9. MAIN BOARD(Page 11)
3-14. MOTOR (TB) BOARD(Page 14)
3-15. MOTOR (LD) BOARD(Page 14)
3-11. DRIVER BOARD, SW BOARD(Page 12)
3-6. FRONT PANEL BLOCK(Page 10)
3-7. MECHANICAL DECK(CWM42FF609)(Page 10)
3-5. CD MECHANISM DECK(CDM74KF-K6BD91UR-WOD)(Page 9)
3-10. CD BOARD(Page 12)
3-12. OPTICAL PICK-UP BLOCK(KSM-213D)(Page 13)
3-13. SENSOR BOARD(Page 13)
3-8. BACK PANEL BLOCK(Page 11)
HCD-GT22/GT44/GT55
8
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE (SIDE-L), CASE (SIDE-R)
4 three screws(case 3 TP2)
1 three screws(case 3 TP2)
5 two screws(BVTP3 × 10)
2 two screws(BVTP3 × 10)
3 case (side-L)
6 case (side-R)
3-3. CASE (TOP)
1 two screws(BVTP3 × 10)3
2 Open the case (top).
2 Open the case (top).
2 Open the case (top).
5 case (top)
4 four claws
HCD-GT22/GT44/GT55
9
3-4. LID (CD)
3-5. CD MECHANISM DECK (CDM74KF-K6BD91UR-WOD), USB BOARD
1 Turn the gear (loading A)to the direction of the arrow.
5 Remove soldering from the four points.4 flexible flat (16 core) cable
(CN301)
CD machanism deck(bottom side)
1 screw(BVTP3 × 8)
2 screw(BVTP2.6)
3 cover (OP)
3-11. DRIVER BOARD, SW BOARD
3 connector(CN703)
4 connector(CN704)
5 DRIVER board
7 SW board
2 wire (flat type) (5 core)(CN702)
1 two screws(BTTP (M2.6))
6 screw(BTTP (M2.6))
CD machanism deck(bottom side)
HCD-GT22/GT44/GT55
13
3-12. OPTICAL PICK-UP BLOCK (KSM-213D)
3-13. SENSOR BOARD
4 two coil springs (insulator)
7 two coil springs (insulator)
5 two insulators
8 two insulators
6 two floating screws(PTPWH M2.6)
2 holder (213) assy
0 Remove the four solders of motor.
qa flexible flat cable (16 core)(CN301)
qs CD board
qd optical pick-up block(KSM-213D)
1 floating screw (PTPWH M2.6)
3 two floating screws(PTPWH M2.6)
9
2 tray
3 belt (table)
5 pulley (table)
8 screw(BTTP (M2.6))
0 SENSOR board
7 gear (geneva)
9 connector(CN731)
1 floating screw (PTPWH M2.6)
6 floating screw (PTPWH M2.6)
4 floating screw (PTPWH M2.6)
HCD-GT22/GT44/GT55
14
3-14. MOTOR (TB) BOARD
3-15. MOTOR (LD) BOARD
6 Remove the two solderings of motor.
8 MOTOR (TB) board
7 table motor assy (M741)
5 two screws(BTTP (M2.6))
4
3 wire (flat type) (5 core) (CN742)
1 stopper
2 stopper
3 Remove the two solderings of motor.
5 MOTOR (LD) board
1 belt (loading)
4 loading motor assy (M751)
2 two screws(BTTP (M2.6))
15
HCD-GT22/GT44/GT55
AMP TEST MODEThis mode is used to display the parameter of amplifier IC anddisplay the VACS status.Procedure:
1. Press the I/1 button to turn the power on.2. Press three buttons of x , u and [USB] simultaneously.3. When the AMP test mode is activated, the message “AMP
TEST IN” is displayed on the fluorescent indicator tubemomentarily, then amplifier adjustment mode is displayed onthe fluorescent indicator tube.
4. Press the [TAPE REC PAUSE/START] button to changed overbetween VACS status display mode and the amplifier ICparameter display mode.
5. In this mode, press the [GROOVE] button to changed overDBFB on/off, and “DBFB ON” or “DBFB OFF” is displayedon the fluorescent indicator tube.
6. In this mode, press the [SURROUND] button to changed oversurround on/off, and “SURROUND ON” or “SURROUNDOFF” is displayed on the fluorescent indicator tube.
− For GT22/GT44 −7. In this mode, press the [EQ BAND] button to enter the equalizer
adjustment mode.In the equalizer adjustment mode, press the [EQ BAND] buttonto change over the adjustment band as LOW/MID/HIGH. Andturn the [OPERATION DIAL] knob to adjust the equalizer levelof each bands.
− For GT55 −7. In this mode, press the [BASS], [VOCAL] or [GUITAR] button
to enter the parametric equalizer adjustment mode.In the parametric equalizer adjustment mode, press the [BASS],[VOCAL] and [GUITAR] button to change over the adjustmentband. And press the [BASS], [VOCAL] or [GUITAR] button tochange over the equalizer frequency of each bands, or pressthe [+] and [--] buttons to adjust the equalizer level of eachbands.
8. To release the amplifier IC parameter display mode or equalizeradjustment mode, press the I/1 button to the power off.
MC TEST MODEThis mode is used to check operations of microprocessor.Procedure:
1. Press the I/1 button to turn the power on.2. Press three buttons of x , u and [AUDIO] simultaneously.3. When the MC test mode is activated, VACS level is displayed
on the fluorescent indicator tube momentarily.4. Press the [TUNING +] button, the message “ALL EQ MAX”
is displayed on the fluorescent indicator tube momentarilyand press the [TUNING --] button, the message “ALL EQ MIN”is displayed on the fluorescent indicator tube momentarily.
5. Press the [ENTER] button, the message “ALL EQ FLAT” isdisplayed on the fluorescent indicator tube momentarily.
6. Turn the [VOLUME] knob clockwise, the message “VOLUMEMAX” is displayed on the fluorescent indicator tubemomentarily and turn the [VOLUME] knob counterclockwise,the message “VOLUME MIN” is displayed on the fluorescentindicator tube momentarily.
7. Press the [TAPE REC PAUSE/START] button to changed overVACS on/off.
8. Press the I/1 button to release from this mode, then cold resetis performed.
SECTION 4TEST MODE
COLD RESETThe cold reset clears all data including preset data stored in theRAM to initial conditions. Execute this mode when returning theset to the customer.Procedure:
1. Press three buttons of x , u and [GROOVE] simultaneously.2. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
TUNING STEP CHANGE-OVERA step of AM tuning interval can be changed over between 9 kHzand 10 kHz.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [TUNER/BAND] button to select “AM”.3. Press the I/1 button to turn the power off.4. Press two buttons of [TUNING +] and I/1 simultaneously.5. The message “AM 9K STEP” or “AM 10K STEP” is displayed
on the fluorescent indicator tube, and thus the tuning intervalis changed over.
CD SHIP (LOCK) MODEThis mode moves the optical pick-up to the position durable tovibration. Use this mode when returning the set to the customerafter repair.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Press two buttons of u and I/1 simultaneously.4. The message “LOCK” is displayed on the fluorescent indicator
tube, and the CD ship mode is set.
CD SHIP (LOCK) MODE & COLD RESETThis mode is used to perform CD ship (lock) mode and cold resetsimultaneously.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Press three buttons of x , [ILLUMINATION] and I/1
simultaneously.4. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
ANTITHEFT LOCK MODEThis mode is used to unable to take sample disc out of disc table inthe shop.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Insert a disc.4. Press two buttons of x and Z for 5 seconds.5. The message “LOCKED” is displayed on the fluorescent
indicator tube and the disc table is locked. (Even if pressingthe Z button, the message “LOCKED” is displayed on thefluorescent indicator tube and the disc table is locked)
6. To release this mode, press two buttons of x and Z for 5seconds.
7. The message “UNLOCKED” is displayed on the fluorescentindicator tube and the disc table is unlocked.
16
HCD-GT22/GT44/GT55
VERSION DISPLAY MODEThis mode is used to check the model, destination and softwareversion.Procedure:
1. Press the I/1 button to turn the power on.2. Press three buttons of x , u and [ILLUMINATION] simulta-
neously.3. When this mode is activated, model type and destination (*1)
are displayed on the fluorescent indicator tube.*1) GRL2H : HCD-GT22
GRL2HS : HCD-GT44GRL3HS : HCD-GT55
Example: GRL3HS_LATIN: Latin American models of HCD-GT554. Press the [TAPE REC PAUSE/START] button to display the soft-
ware version (*2) and year, month, day of the software cre-ation.
*2) G**.*** : The version of system controller (IC901 on the MAINboard).
M**.*** : The version of USB control module in the sysytemcontroller.
U**.*** : The version of USB controller (IC901 on the USBboard).
5. To release this mode, press three buttons of x , u and[ILLUMINATIOM] simultaneously.
CD ERROR CODE DISPLAY MODEThis mode can be used for error code display of CD section.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Press three buttons of x , [CD] and [SURROUND] simulta-
neously.4. When this mode is activated, mechanism deck error code is
displayed on the fluorescent indicator tube.5. Press the [ENTER] button to changed over between optical
pick-up error code display mode and mechanism deck errorcode mode.
Note: There are two [ENTER] buttons on the HCD-GT55, but it works inthe same way whichever button is pressed.
6. Press the [TUNING +]/[TUNING ---] button to change over dis-play of error history number.
7. To release this mode, press the I/1 button to turn the poweroff.
1. Mechanism Deck Error Code ModeWhen this mode is entered, mechanism deck error code is displayedwith the 10-character format on the fluorescent indicator tube.
The first digit from the left indicates:The first digit from the left indicates which mode the error historyis. In the mechanism deck error code mode, “M” is displayed onthe fluorescent indicator tube.
The second digit from the left indicates:(Error history number display)The second digit from the left indicates which order the error historyis. “0” indicates the latest error history, and each time the numberincreases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:(Error status display)The third and 4th digit from the left indicates which error status isindicated.
Display Status
0 0 No error
0 8 Table operation time-out (Table does not move to the target
position within the specified time)
1 6 In the chucking down operation, the operation was retried
by the maximum number of times but the operation could
not be completed
1 7 In the chucking up and down operation, the reverse
recovery processing was attempted but it could not be
recovered
1 8 In the chucking up operation, the operation was retried by
the maximum number of times but the operation could not
be completed
2 0 Loading operation time-out (Table does not move to the
target position within the specified time)
2 2 As the chuck was in the ex-open status at the initialization,
the closing was attempted but could not be completed
The 5th and 6th digit from the left indicates:(Present status display)The 5th and 6th digit from the left indicates which operating statuswhen an error occurred is indicated.
Display Status
0 1 Open completion status
0 2 From open status, the movement to chucking down position
is under way
0 3 From chucking down position, the open operation is under
way
0 4 Chucking down completion status
1 0 The chucking down operation is under way
1 1 The chucking up operation is under way
1 2 Close completion status
1 3 From close status, the ex-open operation is under way
1 4 From ex-open status, the close operation is under way
1 8 Ex-pen completion status
The 7th and 8th digit from the left indicates:(Motor status display)The 7th and 8th digit from the left indicates which motor outputstatus when an error occurred is indicated.
Display Status
× 0 No table motor output
× 1 Table motor forward output
× 2 Table motor backward output
× 3 Table motor break output
0 × No loading motor output
1 × Loading motor forward output
2 × Loading motor backward output
3 × Loading motor break output
17
HCD-GT22/GT44/GT55
5 REPEAT LIMIT CANCEL MODENumber of repeat for CD playback is 5 times when the repeat modeis “REPEAT”. This mode is used to enables CD to repeat playbackfor limitless times.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Press three buttons of x , [CD] and u simultaneously.4. The message “LIMIT OFF” is displayed on the fluorescent
indicator tube momentarily, CD repeat 5 limit is cancelled.
CD/USB POWER MANAGEThis mode is used to changed over CD and USB power on/off fordecreasing of reception noise in the tuner mode.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Press the I/1 button to turn the power off.4. Press two buttons of x and I/1 simultaneously.5. The message “CD POWER ON” or “CD POWER OFF” is
displayed on the fluorescent indicator tube, and CD and USBpower on/off changed over in the tuner mode.
BOOSTER ON/OFFThis mode is used to changed over MP3 booster on/off.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [USB] button to select “USB”.3. Press three buttons of x , [SURROUND] and [USB] simulta-
neously.4. The message “BOOSTER ON” or “BOOSTER OFF” is
displayed on the fluorescent indicator tube, and MP3 boosteron/off changed over.
EXCITER ON/OFFThis mode is used to changed over the exciter on/off.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Insert a MP3 disc.4. Press three buttons of x ,[SURROUND] and [AUDIO] simul-
taneously.5. The message “EXCITER ON” or “EXCITER OFF” is
displayed on the fluorescent indicator tube, and the exciteron/off changed over.
CD SERVICE MODEThis mode can run the CD sled motor freely. Use this mode, forinstance, when cleaning the optical pick-up.Procedure:
1. Press the I/1 button to turn the power on.2. Press the [CD] button to select “CD”.3. Press three buttons of x , [FOLDER ---] and [SURROUND]
simultaneously, the message “SERVICE” is displayed on thefluorescent indicator tube.
4. Press the [TUNING ---] button to move the optical pick-up toinside track and the message “SLED IN” is displayed on thefluorescent indicator tude, or press the [TUNING +] button tooutside track and the message “SLED OUT” is displayed onthe fluorescent indicator tude.
5. Press the [DISPLAY] button, “LD ON” or “LD OFF” is dis-played on the fluorescent indicator tude. Each time [DISPLAY]
button is pressed, laser diode on/off is changed over.6. To release this mode, press three buttons of x , [FOLDER ---]
and [SURROUND].
The 9th and 10 th digit from the left indicates:(Tray status display)The 9th and 10th digit from the left indicates which target processingwhen an error occurred is indicated.
Display Status
0 1 Open operation
1 2 Close operation
1 8 Ex-open operation
2. Optical Pick-up Error Code ModeWhen this mode is entered, optical pick-up error code is displayedwith the 8-character format on the fluorescent indicator tube.
The first digit from the left indicates:The first digit from the left indicates which mode the error historyis. In the optical pick-up error code mode, “D” is displayed on thefluorescent indicator tube.
The second digit from the left indicates:(Error history No. display)The second digit from the left indicates which order the error historyis. “0” indicates the latest error history, and each time the numberincreases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:(Error status display)The third and 4th digit from the left indicates which error status isindicated.
Display Status
0 1 Not focused (TOC read without a disc)
0 2 GFS NG (TOC read with a disc chucked)
0 3 Start operation time-over
0 4 Defocused continuously (Defocused during TOC reading)
0 5 Q code not entered for specified time
0 6 Tracking not turned ON
0 7 Blank disc (Blank disc TOC read)
The 5th and 6th digit from the left indicates:(Error step display)The 5th and 6th digit from the left indicates which processing whena trouble occurred
Display Contents
0 1 Power OFF in progress
0 2 Initialize in progress
0 3 Oscillation stopping
0 4 From oscillation stop, oscillation starting
0 5 Stopping
0 6 Stop operation is under way
0 7 Start operation in progress
0 8 TOC read in progress
0 9 Search operation is under way
0 A Playback operation is under way
0 B Pause operation is under way
0 C Playback manual search operation is under way
0 D Pause manual search operation is under way
0 E —
The 7th and 8th digit from the left indicates:The 7th and 8th digit from the left indicates which operation inprogress when a trouble occurred. (Step of each processing of the5th and 6th digits is indicated)
18
HCD-GT22/GT44/GT55
PANEL TEST MODEThis mode is used to check the fluorescent indicator tube, LEDs, phones jack, keys and control knobs.Procedure:
1. Press the I/1 button to turn the power on.2. Press three buttons of x , [SURROUND] and [TUNER] simultaneously.3. All segments on the fluorescent indicator tube and all LEDs light up.4. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the key routes check mode.5. In this mode, each time any button is pressed, it displays key route and key number of the button. (Refer to following table)
6. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the key check mode.7. In this mode, each time any button is pressed, “KEYCONT” value increases. However, once a button is pressed, it is no longer
taken into account. (Maximum numbers are GT22: 29, GT44: 30, GT55: 39)8. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the phones jack check mode.9. In this mode, “H_P ON” is displayed when phones jack is inserted, and “H_P OFF” is displayed when phones jack is pulled out.10. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the volume check mode and display “VOLUME
FLAT”.11. In this mode, “VOLUME UP” is displayed when [VOLUME] knob is turned clockwise, and “VOLUME DOWN” is displayed
when [VOLUME] knob is turned counterclockwise.12. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the jog check mode and display “JOG FLAT”.13. In this mode, “JOG UP” is displayed when [OPERATION DIAL] knob is turned clockwise, and “JOG DOWN” is displayed when
[OPERATION DIAL] knob is turned counterclockwise.14. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to release the Panel Test mode.
PRECAUTION1. Clean the following parts with a denatured-alcohol-moistened
swab :record/playback head pinch rollererase head rubber beltscapstan idlers
2. Demagnetize the record/playback head with a headdemagnetizer. (Do not bring the head magnetizer close to theerase head.)
3. Do not use a magnetized screwdriver for the adjustments.4. After the adjustments, appiy suitable locking compound to
the parts adjusted.5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
TORQUE MEASUREMENTMode Torque Meter Meter Reading
2.6 – 6.9 mN⋅mFWD CQ-102C (30 – 70 g⋅cm)
(0.41 – 0.97 oz⋅inch)
FWD0.15 – 0.59 mN⋅m
Back TensionCQ-102C (1.5 – 6.0 g⋅cm)
(0.021 – 0.083 oz⋅inch)
5.4 – 16.7 mN⋅mFF/REW CQ-201B 55 – 170 g⋅cm)
0.76 – 2.35 oz⋅inch)
TAPE TENSION MEASUREMENTMode Tension Meter Meter Reading
FWD CQ-403Amore than 100 g
(more than 3.53 oz)
20
HCD-GT22/GT44/GT55
3. Mode: Playback
set
test tapeP-4-A063(6.3 kHz, –10 dB) oscilloscope
V H
waveform of oscilloscope
0° +45°–45° +90° +135° +180°
good wrong
MIC boardPHONES jack(J803)
2. Turn the adjustment screw and check output peaks. If the peaksdo not match for L-CH and R-CH, turn the adjustment screwso that outputs match within 1dB of peak.
Screwposition
L-CHpeak
within1dB
Outputlevel
L-CHpeak
R-CHpeak
within1dB
Screwposition
R-CHpeak
SECTION 6ELECTRICAL ADJUSTMENTS
0 dB=0.775 VDECK SECTION
set
MIC boardPHONES jack(J803)
+–
level meter
test tapeP-4-A063(6.3 kHz, –10 dB)
1. Demagnetize the record/playback head with a headdemagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.3. After the adjustments, apply suitable locking compound to the
parts adjust.
TEST TAPE
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENTNote: Perform this adjustment for both decks.
Procedure:1. Mode: Playback
Tape Signal Used for
P-4-A063 6.3 kHz, -10 dB Azimuth Adjustment
4. After the adjustments, apply suitable locking compound tothe pats adjusted.
Adjustment Location: Playback Head (DECK-A)Record/Playback/Erase Head (DECK-B)
21
HCD-GT22/GT44/GT55
CD SECTION
Note:1. CD Block is basically constructed to operate without adjustment.2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.3. Use an oscilloscope with more than 10 MΩ impedance.4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.5. Check the focus bias check when optical pick-up block is replaced.
FOCUS BIAS CHECK
Procedure :1. Connect oscilloscope to TP121 (RFI) and TP124 (VC) on the
CD board.2. Press the I/1 button to turn the power ON.3. Set disc (YEDS-18) on the tray and press the u button to
playback.4. Confirm that oscilloscope waveform is as shown in the figure
below. (eye pattern)A good eye pattern means that the diamond shape (◊) in thecenter of the waveform can be clearly distinguished.
Checking Location:
+–
CD board
TP121 (RFI)TP124 (VC)
oscilloscope(DC range)
VOLT/DIV: 200 mVTIME/DIV: 500 ns
level:1.2 ± 0.3 Vp-p
TUNER SECTION
FM TUNE LEVEL CHECK
Procedure:1. Turn on the set.2. Input the following signal from signal generator to FM antenna
input directly.
Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Note: Use 75 ohm coaxial cable to connect signal generator and the set.You cannot use video cable for checking.Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.4. Confirm “TUNED” is lit on the display for A, B and C signals.
When the selected station signal is received in good condition,“TUNED” is displayed.
signal generator
set
TP124(VC)
– CD Board (Conductor Side) –
TP121(RFI)
IC101
22
HCD-GT22/GT44/GT55
MEMO
HCD-GT22/GT44/GT55
2323HCD-GT22/GT44/GT55
SECTION 7DIAGRAMS
7-1. BLOCK DIAGRAM – CD SERVO, USB Section –
SYSTEM CONTROLLERIC901 (1/4)
CD-MP3 PROCESSORIC101
MUTE
2-AXISDEVICE
(TRA
CKIN
G)(F
OCUS
)
95
89
A
BD+3.3VDETECTOR
FNi1 (A)
RFo97 FPi1 (B)
88
2
AGCi
3RFRP RFZi
76TEi TEZi
83RFEQo 81 RFi82 RFRPi
30LO
27RO
65AIN (PI4)66BCKi (PI5)
BCKA-IN
BUS1-U
BUS0-U
BUS2-U
BUS3-U
BUCK-U
67LRCKi (PI6)LRCK
51PIO3GATE
46AoUT3 (PO4)ST-REQ
38BUS0
R-CH94 FNi2 (C)
96 FPi2 (D)
100 TNi (E)
98 TPi (F)
91 LDo 92MDi
2 VO1+
1 VO1–
13 DMo
LDPD
LASER DIODE
OPTICAL PICK-UPBLOCK
(KSM-213DCP)
B
C
D
E
F
12 FMo
10 TRo
9 FOo
20 IO0 (/HSO)
I-V A
MP
M401(SPINDLE)
M402(SLED)
12 VO2–
11 VO2+
18 VO3+
17 VO3–
26 VO4+
27
7
IN4’ 24
IN3’ 20
IN2’ 9
IN1 3
BIAS 23
84 VRo
VO4–
M
M
FOCUS/TRACKING COIL DRIVE,SLED/SPINDLE MOTOR DRIVE
• AbbreviationAR : Argentina modelE2 : 120V AC Area in E modelE3 : 240V AC Area in E modelE13 : 220V - 230V AC Area in E modelE51 : Chilean and Peruvian modelsMX : Mexican model
SI O-NJM3427A-DATA49 84SCK O-NJM3427A2-CLK48 86CSb O-NJM3427FA2-CS51 68
RSTb O-NJM3427FA2-RESET52 69
(AC IN)
RY901
POWER ON/OFFRELAY DRIVE
Q903
VOLTAGESELECTOR
S901
D+1.5V+1.5V
REGULATORIC201
USB+3.3V
D008
D009D301, 302
D908
AUDIO+9V
M+9VM+7V
F907RECT
D011 – 014
RECTD021 – 024
F904F905RECT
D402
F908F909RECT
D401
D007
FPROTECT
+9VREGULATOR
IC021
+9VREGULATOR
IC011
+3.3VREGULATOR
IC006
+5VREGULATOR
IC007
+4VREGULATOR
Q901, 902
RELAY B+
3O-FRONT-SP-RELAY
52I-USB-MONI
8O-USB-POWER
4O-CD-POWER
B+ SWITCHQ041, 042
B+ SWITCHQ301, 302
B+ SWITCHQ303, 304
–27VREGULATOR
Q902
AMPSECTION
B+
AMPSECTION
B+
FORFLUORESCENT
INDICATORTUBE
(GT22/GT55)
(GT44)
–VFL
VFVF
PT902SUB POWER
TRANSFORMER
PT901MAIN POWER
TRANSFORMER
GT22: MX, AR, AUS/GT44: MX, AR, AUS/
GT55: MX, AR
GT22: E2, E3, E13, E51/GT44: E2, E3, E13, E51/
GT55: E2, E51
GT22: MX, AR, AUS/GT44: MX, AR, AUS/
GT55: MX, AR
(GT44/GT55)
(GT55)
45
46
XT
XTb
OSC
VDD+3.3V
D+3.3V,VREF+3.3V
+VH–VH
+VL–VL
F909F904RECT
D401+VCC–VCC
• AbbreviationAR : Argentina modelAUS : Australian modelE2 : 120V AC Area in E modelE3 : 240V AC Area in E modelE13 : 220V - 230V AC Area in E modelE51 : Chilean and Peruvian modelsMX : Mexican model
(Page 25)
HCD-GT22/GT44/GT55
2727HCD-GT22/GT44/GT55
• Note For Printed Wiring Boards and Schematic Diagrams
• Indication of transistor
Note on Schematic Diagram:• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolyticsand tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specified.• f : internal component.• 2 : nonflammable resistor.• 5 : fusible resistor.• C : panel designation.
• A : B+ Line.• B : B– Line.• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.– CD Board –no mark : CD PLAY[ ] : USB– USB Board –no mark : USB– TC Board –no mark : TAPE PLAY( ) : TAPE REC⟨⟨ ⟩⟩ : TAPE A : TAPE B– Other Board –no mark : TUNER (FM/AM)( ) : CD PLAY[ ] : TAPE PLAY
∗ : Impossible to measure• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-tion tolerances.
• Waveforms are taken with a oscilloscope.Voltage variations may be noted due to normal produc-tion tolerances.
• Circled numbers refer to waveforms.• Signal path.F : TUNER (FM/AM)J : CD PLAY
: USBE : TAPE PLAY (DECK-A)d : TAPE PLAY (DECK-B)G : TAPE RECf : AUDIO INN : MIC
• AbbreviationAR : Argentina modelAUS : Australian modelE2 : 120V AC Area in E modelE3 : 240V AC Area in E modelE13 : 220V – 230V AC Area in E modelE51 : Chilean and Peruvian modelsMX : Mexican model
Note on Printed Wiring Board:• X : parts extracted from the component side.• Y : parts extracted from the conductor side.• W : indicates side identified with part number.• f : internal component.• : Pattern from the side which enables seeing.(The other layers' patterns are not indicated.)
Caution:Pattern face side: Parts on the pattern face side seen from(Conductor Side) the pattern face are indicated.Parts face side: Parts on the parts face side seen from(Component Side) the parts face are indicated.
• Circuit Boards Location
C
B
These are omitted.
E
Q
B
These are omitted.
C E
Q
Note: The components identified by mark 0 or dotted linewith mark 0 are critical for safety.Replace only with part number specified.
CD boardSW board
MOTOR (LD) board
SENSOR board
DRIVER board
MOTOR (TB) board
TUNER (FM/AM)
KEY LEFT board
KEY TOP board(GT55)
PANEL board
VOLUME board
KEY RIGHT board
USB board
MIC board
MAIN board
5V REG board
SUB WOOFER board (GT44/GT55)
AMP board
TC board
SW-SP board (GT44/GT55)
TRANS board
D-LIGHT SYNC board (except Australian model)
HCD-GT22/GT44/GT55
2828HCD-GT22/GT44/GT55
7-5. PRINTED WIRING BOARD – CD Board – : Uses unleaded solder.• See page 27 for Circuit Boards Location.
R402
C404 C403
R405
R408
IC401
R108
R109
C136
C135
R128
R130
R134
R135
R136 R129
R139
R143R142R140
C124
C125
C122
C123
R151C138
C137
C140
C139
C142C141
C143R144
C100
C107
R414
C144C146
C145
C147C148
C149
C150
R148
R146
C105
C104
R145
R147
R149
R150
C118C117
CN301
C303
C302
C301
R102C127C126
R101C103
C113
C102
C101
C119
C120
R105
R106
C132
R104
R154 C1
16
R153
C109
C110 R110
IC101R210
R209
R218 R208
R219 R207R220 R206R221
R205R222
R204R223 R203
R157
R156
R202
CN202
C152
C151
R224
M401
S201
M402
C405
C401
R415
R114
C153R118
R212R213
C106
C306
R303
R304R302
R301
C307
Q301
C309
C128
C130
R155
C115
R111
R112
C133
R119
C112
C108
R214
R216R121
C201
C202
C204
C205R201
C206
IC201C207
R211
X102
X102
CD BOARD (CONDUCTOR SIDE)
1-872-620-
11
(11)
(LIMIT)
M
(SPINDLE)M
(SLED)
AMAIN BOARD
CN302
TP124(VC)
TP121(RFI)
OPTICAL PICK-UPBLOCK
(KSM-213DCP)
1
3
5
4
CD BOARD (COMPONENT SIDE)
1-872-620-
11
(11)
E
A
B
C
D
E
F
1 2 3 4 5 6 7 8 9 10
(Page 37)
HCD-GT22/GT44/GT55
2929HCD-GT22/GT44/GT55
7-6. SCHEMATIC DIAGRAM – CD Board – • See page 36 for Waveforms. • See page 58 for IC Block Diagrams. • See page 61 for IC Pin Function Description.
IC B/D
AMAIN
BOARD(3/4)
CN302
2
1
IC B/D
OPTICALPICK-UPBLOCK
(KSM-213DCP)
M
M
DATACLK
++
+
R224 100
R121100
R108R109 100
R154
R153
C201
R304
R201
R110
R303
R203
R204
R205
R206
R207
R208
R209
R210
R219
R223
R222
R221
R218
R112
R202
R211
Q301
R301
C202
R157
TP121 (RFI)
TP124 (VC)
R156
CN301
R101
C401R415
R102
R1
28
R129
R143
R142 R139
R114R140
R151
R220
R150
R212
IC101
R105
R106
IC201
X102
C301
C307
C309
C100
C138
C153
C151
C204
C13
0
C12
8
C1
13
C1
27
C126
C103
C102
C120
C118
C117
C101
C1
24
C125
R145
R146
R147
R148
R149
C149
C105
C143
C146
C145C148
C104
C405 C404 C403
C205C116
C133
CN202
C110
R111
C115R155
C109
C132
R104
C123
C122
C139
C150
R136 R135
R134 C112 C108
R11
9
R118
C136C107
R130
R144
C144
C147
C140
C137
C141
C142
C106
R302
C306
C303C302
R405
R402
R408
R414
C207
C152
C206
IC401
1M
1M
10010V
2.2
0
10k
2.2
100
100
100
100
100
100
100
100
100k
100k
100k
100k
100k
100
0
100
2SA2119K
100k
10010V
100
100
16P
220
22010V47k
10k47
0k
1k
47k
22k 47k
10k0
0
100k
0
TK63115SCL-G@GT
0.1
1
0.001
0.1
470p
470p
0.1
0.1
0.0
022
0.1
0.1
0.1
0.01
0.01
0.022C1190.022
0.1
0.0
047
0.0
047
0
0
0
0
0
22p
0.1
0.01
470p
0.01
47p
0.1
0.10.1
0.1
0.1
0.1
0.1
0.1
100
226.3V
47
0.1
0.1
0
470p
470p
0.01
0.001
22k 470k
1M 0.1 0.1
47p0.1
4.7k
22k
0.1
0.1
0.01
0.01
0.0022
0.1
10010V
0
10010V
1010
10k
2.2k
2.2k
4.7k
1
470p
1
BA5826SFP-E2
SP-
SP+
SL+
SL-
100
R213 100
R214 100
R216 100
1M 1k
16.9344MHz
TC94A70FG-008 (S, D)
5p5
p
27P
0
100k
IC101CD-MP3 PROCESSOR
IC401FOCUS/TRACKING COIL DRIVE,SLED/SPINDLE MOTOR DRIVE
IC201+1.5V REGULATOR
SP-
SP+
SL+
SL-
M401(SPINDLE)
M402(SLED)
AUTOMATIC POWERCONTROL
S201(LIMIT)
0.1
(Page 40)
HCD-GT22/GT44/GT55
3030HCD-GT22/GT44/GT55
7-7. PRINTED WIRING BOARDS – CHANGE Section – : Uses unleaded solder.• See page 27 for Circuit Boards Location.
JW702
JW703
JW704
JW705
JW706
JW707
JW70
8
JW711
CN705
JW712
JW701
JW70
9
JW713
JW714
JW710
R736
CN702
R751
C752
CN703
CN704
IC712
R713
Q731
C751
D711
D701
C737
R734
R733
R732
R723
R722
R721
R731
R712
R711
R702
R701
C736
C735
C741
C731
C715
IC701
CN701
CN721
M751
IC731
CN731
CN741
CN742
M741
CN751
S751
1-866-201-
12
(12)
1
2
E
DRIVER BOARD
BMAIN
BOARD
1
9
1
9
1
4S711ROTARY ENCODER
DISC TABLEADDRESS DETECT
1 2
M
MOTOR (LD) BOARD
1-687-133-
12
(12)
(LOADING)
12
SENSOR BOARD
1-68
7-13
2-
12
(12)
E
C
A
K
MOTOR (TB) BOARD
M
1-68
7-13
4-
12
(12)
1
3
(TABLE)
SW BOARD
1-687-669-
12
(12)
1
2
DISC TABLEOPEN/CLOSE
DETECTOPEN
CLOSE
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10
(Page 37)
• SemiconductorLocation
Ref. No. Location
D701 E-7D711 E-7
IC701 F-7IC712 F-8IC731 F-5
Q731 C-9
HCD-GT22/GT44/GT55
3131HCD-GT22/GT44/GT55
7-8. SCHEMATIC DIAGRAM – CHANGE Section – • See page 58 for IC Block Diagrams.
C741
R702 R701
D701C751
R713
R712 R711
D711
CN721
R7
22
R7
21
R7
23
C7
36
C7
35
C7
37
R731
C731
R733
CN704
E3
E2
E1
CN703
CN742 CN702
CN741
IC731
CN751 CN705
C752 R751
CN731
Q731
M751
M741
IC701
IC712
R734 R732
CN701C715
R736
S751
0.01
100 470
MTZJ-T-775.1A0.01
22k
4.7k 1k
MTZJ-T-773.6B
2P
4.7
k
4.7
k
4.7
k
0.1
0.1
0.1
100
1050V
1k
2P
4P
5P 5P
3P
RPI-576
2P 2P
0.1 4.7k
3P
DTC114ESA
BA6956AN
BA6956AN
12k 10k
13P10016V
390
RN
FR
NF
TM-2
GND
TM-1
SENS-IN
SENS-OUT
GND
TM-1
TM-2
SENS-IN
SENS-OUT
GND
SENS-IN
SENS-OUT
GND
SENS-IN
SENS-OUT
GND GND
OPEN SW OPEN SW
LM-2
LM-1 LM-1
LM-2
GND
E-1
E-2
E-3
VC
C
OU
T2
GN
D
VR
EF
OU
T1
VM
FIN
RIN
VC
C
OU
T2
GN
D
VR
EF
OU
T1
VM
FIN
RIN
LM-R
TM-R
E-1
E-2
E-3
TBL ADDRESS SENS
OPEN SW
(LOADING)
ADDRESS DETECT
(TABLE)
OPEN
CLOSE
OPEN/CLOSE
DETECT
DRIVE
LOADING MOTOR
DRIVE
TABLE MOTOR
LEVEL
SHIFT
D+3.3V
M+9V
M-GND
M-GND
LM-F
TM-F
DISC TABLE
S711
DISC TABLE
DISC TABLE
ADDRESS SENSOR
ROTARY ENCODER
BMAINBOARD(3/4)
(Page 40)
HCD-GT22/GT44/GT55
3232HCD-GT22/GT44/GT55
7-9. PRINTED WIRING BOARD – USB Board – : Uses unleaded solder.• See page 27 for Circuit Boards Location.
R928
CN904
C902
C903
C904
C905
C907R983
R901
R937
R938
C901IC915
C916
C917
R913
R915
X901
C909R919C910
C912
R981
R985
C908
R922
C913
R934
R986
C915
C906
C922
C921
R977
R978
R979
R932
R982
R984
R976
CN907
CN901
CN903
RB922 RB921
IC921
RB92
4RB
923
R975R974
R973R972
R971R970
R902
R941
R943 R9
04
R944
R905
R906
R903
R942
R907C930
FB902
D901
FB901
R917
R916
D902
C920
R925
R926
R924
R923
C914
R920R921
R945
R933
R947
R950
JR90
2
IC901
C919
D MAIN BOARDCN301
USB BOARD (COMPONENT SIDE)
1-872-405-
12
(12) 1-872-405-
12
(12)
USB BOARD (CONDUCTOR SIDE)
K
A/KA
A/K A
K
(NC)
C 5V REG BOARD
3 1
4 5
A
B
C
D
1 2 3 4 5 6 7 8 9 10
14
21
E MIC BOARDCN802
(Page 37)
(Page 37)
(Page 42)
HCD-GT22/GT44/GT55
3333HCD-GT22/GT44/GT55
7-10. SCHEMATIC DIAGRAM – USB Board – • See page 36 for Waveforms. • See page 58 for IC Block Diagrams. • See page 61 for IC Pin Function Description.
C5V REGBOARD
EMIC
BOARDCN802
DMAIN
BOARD(3/4)
CN301
11
R986 100DATA
R985 100CLOCK
C9300
C9190.1
CLOCK
DATA
CLK
DATA
R970
R971
R972
R973
R974
R975
R976
R977
R979
R978
R932
R982
R984
RB922
RB921
RB923
RB924
C907
C906
C921
R9
01
C9
01
R9
37
R9
83
C9
02
JR9
02
C9
03
C922
R9
07
R9
06
R9
05
R9
04
R9
03
R9
02
R917
R9
15
R9
13
C9
08
R919
C909
R916
C910C912
R9
44
R9
43
R9
42
R9
41
C905C904
R933
R934
R938
C915
C913
C914
R981
R922
R924
R923
R921
IC921
CN904
R926
R925C920
IC915
C916
R920
CN907
CN903
CN901
FB902
FB901
D902
C917
R945
R947
IC901
R928
D901
X901
R950
100
100
100
100
100
100
100
100
100
100
100
100
100
47
47
47
47
0.1
0.1
0.1
10
k
0.1
10
0
10
0
10
16
V
0 10
16
V
0.1
4.7
k
4.7
k
4.7
k
4.7
k
4.7
k
4.7
k
0
10
k
10
0k
0.1
100
22p
0
22p10p
10
0k
10
0k
10
0k
10
0k
0.11016V
0
10k
100
0.1
0.1
0.1
100
100k
27
27
100k
IS61LV6416-10T
7P
15k
15k0.1
R5523N001BTR-F
0.1
10k
21P
5P
2P
4.7k
4.7k
0
9MHz
4.7k
A13
A14
A15
D0
D1
D2
D3
D4
D5
D6
D7
RD
WR
LB
UB
SR
AM
-CS
A8
A9
A10
D7
D4
D5
D6
WR
D0
D1
D2
D3
SRAM-CS
A11
A12
A13
A14
A15
LB
UB
RD
A7
A8
A9
A10
A11
A12
A4
A5
A6
D12
D13
D14
D15
A4
A5
A6
D8
D9
D10
D11
D12
D13
D14
D15
BU
S0
BU
S1
BU
S2
BU
S3
BU
CK
CC
E
USB-SI
USB-SO
DO
US
B-R
ST
LR
CK
BCK
REQ
ST-REQ
A-IN
GATE
LRCK
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
DO
DI
USB-SO
USB-SI
BCK
A-IN
GATE
REQ
ST-REQ
USB-RST
DI
A7
A16
A16
A1
A2
A3
A1
A2
A3
D11
D10
D9
D8
BOOT
AMO
TXD1
RXD1
RES
ET
BOOT
AM0
TXD1
RXD1
RESET
EN
FLG
EN
FLG
MC2837
2206.3V
TMP92CD28FG-2CB4
MC2837
D+
D-
AM0
DVSS
DVSS
RV
OU
T1
RV
IN
RV
IN
RV
OU
T2 DVSS
DVSS
DV
SS
AM
1
X2
DV
SS
X1
VBUS-5V
DVDD+3.3V
DVSS
LRCK
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
USB-RST
ST-REQ
REQ
GATE
A-IN
BCK
VBUS-GND
BOOT
RESET
RXD1
TXD1
DVSS
VCC
AM0
DI(CTS)
DO(RTS)
USB-SI(RXD)
USB-SO(TXD)
NC
A6
A5
A4
A3
NC
I/O8
I/O10
I/O11
VDD
GND
I/O12
I/O13
I/O14
I/O15
A2
A1
A0
I/O9
NC
A7
A8
A9
A10
I/O7
I/O6
I/O5
I/O4
GND
VDD
I/O3
I/O2
I/O1
I/O0
A11
A12
A13
A14
A15
WE
CELB
UB
OE
A1
3
GND
D+
D-
VBUS
EN
GND
OUT
INFLG
(USB)
(NC)
S-RAM
VBUS POWER ON/OFF SWITCH
A12
A11
A10
A9
A8
DVCC
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
DVCC
D7
D6
D5
D4
D3
S2
D1
D0
DV
SS
DV
CC
DV
CC
DV
SS
NO
US
E
NO
US
E
NO
US
E
DV
CC
G-3
NO
US
E
NO
US
E
DI
G-2
G-1
ST-REQ
REQ
DVCC
GATE
DATA
BCK
SCL
SDA
NO USE
RXD1
TXD1
CLOCK
DATA
DO
NO USE
USBPON
USBOC
DVCC
BO
OT
NO
US
E
SR
LU
B
SR
LL
B
RD
WR
CS
2
DV
CC
NO
US
E
/CC
E
/BU
CK
BU
S3
BU
S2
BU
S1
BU
S0
A1
6
A1
5
A1
4
USB CONTROLLER
LR
CK
/RE
SE
T
(Page 40)
(Page 43)
(Page 41)
HCD-GT22/GT44/GT55
3434HCD-GT22/GT44/GT55
IC30
1
IC401D401
Q303
Q402
Q301
Q401
Q302
Q408
Q304
Q306
Q404
Q410
Q405
Q407
Q406
Q454
Q305
Q403
Q409
C355
C354
C353
C352
C328
C327 C324
C323
C316
C315 C3
04C3
03
C302C301
C466
C462C461
C433 C430
C418C417
C416
C414C413
C412
C411
C406 C405
C404
C403
JR31
6
JR315
JR313
R351
R350R349
R326
R325
R324
R323
R322R321
R320R319
R318
R317
R316
R315
R314
R313
R312
R311
R310
R309
R308
R307
R306
R305
R304
R303
R302R301
R487
R486
R484
R483
R482R481
R464R463
R462R461
R459
R458
R457
R456
R455
R454
R453
R452
R451
R450
R449
R444
R443
R442
R441
R440
R438
R437
R436
R435
R434 R433
R432 R431R430
R429
R428 R427
R424 R423
R414R413
R412R411
R408R407R406
R405
R404
R403
R402
R401
D301
JR305
JR320
JR30
3
JR319JR308
JR31
8
JR307
JR301
JR30
9
JR302
JR31
1
JR304
JR310
JR31
7
JR30
6
BE
BE
1210
11
31
18
Q455
Q453
C356
C351
C350
C330
C329
C318C317
LP302
LP301
T001
C460
C456
C454
C453
C452
C410
C409
C402
C401
CN008
CN301
CN30
2
JW30
1
JW320
JW31
6
JW30
6
JW30
9
JW315
JW30
4
JW303
JW317
JW30
5
JW319
JW31
3
JW307
JW30
2
JW31
1
JW310
JW31
8
JW32
1
JW308
W302
W301JW312
BE
BE
B E
GS
GS
14 5
8
BE
BE
BE
145
8
BE
BE
BE
BE
BE
G S G S
1-872-797-
11
(11)
TC BOARDJ MAIN BOARD
CN202
HRPE1REC/PB/
ERASE HEAD(DECK-B)
HP1(PB HEAD)(DECK-A)
D
D
D D
E
E
A
B
C
1 2 3 4
7-11. PRINTED WIRING BOARD – TC Board – : Uses unleaded solder.• See page 27 for Circuit Boards Location.
7-28. PRINTED WIRING BOARDS – KEY Section – : Uses unleaded solder.• See page 27 for Circuit Boards Location.
R679
R678R677
R669
R668R667R648 R647
R646
R645
R644
R643
R642
R641
16
D607D609 D608
S649
S648 S647
S646 S645
S644
S643
S642
S641
R627
R633
R631
R637
R636
R635
R634
R632
1
3
S638
S637
S636
S635
S634
S628
S633
S632
S631
CN61
5
R698R688
R657
R656
R655
C602
C601
R607
R606
R605
R604
R603
R602
31 2
1
7
IC601
D611
D612
S608
S607
S606
S605
S604
S603
S602
G MAIN BOARDCN903
1-872-793-
12
(12)
KEY TOP BOARD
FOCUS(BASS) (VOCAL) (GUITER)
FOCUS FOCUS
BASSD609, S649
VOCALD608, S646
GUITARD607, S645
+
–
ENTER
(GT55)
RPANEL BOARD
CN605
1-872-792-
12
(12)
KEY RIGHT BOARD S602 – 608,S628,
631 – 638S641 – 649
DISC 1
DISC 2
DISC 3
EX-CHANGE/DISC SKIP
ZOPEN CLOSE
x
CD-USBSYNC/REC
CD-TAPESYNC
TAPE RECPAUSE/START
SPANELBOARD
KEY LEFT BOARD
1-872-791-
12
(12)
1STANDBY
D611, S602
TUNER/BAND
TAPE A/B
CD
AUDIO
USB
SUBWOOFER
D612, S608
(GT44/GT55)
(GT44/GT55)
A
B
C
D
E
F
1 2 3 4 5 6 7 8 9 10 11
(Page 50)
(Page 37)
(Page 50)
• SemiconductorLocation
Ref. No. Location
D607 A-4D608 A-2D609 A-1D611 D-2D612 H-2
IC601 D-2
HCD-GT22/GT44/GT55
5353HCD-GT22/GT44/GT55
7-29. SCHEMATIC DIAGRAM – KEY Section –
MAIN
GBOARD
(1/4)CN903
PANEL
SBOARD
PANEL
RBOARDCN605
3.2
3.2
SLR-325VCT31PD608
SLR-325VCT31PD609
SLR-325VCT31PD607
1kR667
1kR677
1kR668
1kR678
1kR669
1kR679
S641 S642 S643 S644 S645 S646 S647 S649
1.5kR645
4.7kR647
470R642
1kR644
2.2kR646
330R641
680R643
10kR648
1
2
3
4
5
6
6PCN616
KEY4
D-GND
LED+9V
GUITER_LED_OUT
VOCAL_LED_OUT
BASS_LED_OUT
KEY TOP BOARD
- ENTER + FORCUS(GUITAR)
GUITAR VOCAL(VOCAL)FORCUS FORCUS
(BASS)BASS
GUITARVOCAL
BASS
S648
A
1 2
J
H
B
C
7 8
I
F
96
K
43
G
D
5
E
S607
S606
S605
S604
S603
S602
SLR-325VCT31PD611
470R655
470R602
680R603
1kR604
1.5kR605
2.2kR606
1kR688
1kR698
S608
4.7kR607
1kR657
100R656
SLR-325MCT31
0.22C601
VC
C
OU
T
GN
D
NJL24H400BIC601
1 3 2
SW-LED-OUT
STBY-LED
SIRCS
KEY0
D-GND
AVREF
LED+9V
KEY LEFT BOARD
IC601REMOTE CONTROL
/STANDBY
RECEIVER
1
7
(GT44/GT55)SUBWOOFER
SUBWOOFER
USB
AUDIO
TAPE A/B
TUNNER/ BAND
CD
/STANDBY
(GT44/GT55)
D612
S635
S636
S631
S632
S633
S628
S634
S637
S638
330R631
470R632
680R633
4.7kR637
2.2kR636
4.7kR627
1.5kR635
1kR634
1
2
3
CN6153P
D-GND
KEY3
KEY
KEY RIGHT BOARD
DISC 1
DISC 2
DISC 3
OPEN/CLOSE
EX-CHANGE/DISC SKIP
CD-TAPESYNC
CD-USBSYNC/REC
TAPE-RECPAUSE/START
(Page 38)
(Page 51)
(Page 51)
HCD-GT22/GT44/GT55
5454HCD-GT22/GT44/GT55
7-30. PRINTED WIRING BOARD – TRANS Board (GT22/GT55) – : Uses unleaded solder.• See page 27 for Circuit Boards Location.
B EQ903
D901
D906
D910
JL901
JL904
JL906
JL907
JL914
JL915
JL916
JL919
JL920
JL921
JL923
JL924
JL926
R903
R904
R910
R911
R914
R915
R912
R913
C EB
13
15
111
F904
F905
F906
F907
F908
F909
Q902
W901R9
08
CN901
CN90
3CN
907
LP901
FH907C908
FH908
FH909
PT901
PT902
FH910
FH911 FH912
FH913 FH914
FH915
FH916
FH917FH918S901
RY901
C909 C910
C911
JW90
4
JW90
6
JW907
JW91
7
JW90
2
JW90
3JW90
5
JW912
JW90
1
JW908
JW909
JW910
JW925
JW92
2
JW92
6
JW928
JW91
1
JW913
JW914
JW915
JW916
JW918
JW919
JW92
0
JW92
1
JW92
9
JW923
JW92
4
JW92
7
C914
D902
D903
D904
D905
D908
C907
1-872-053-
11
(11)
TRANS BOARD
N1MAIN BOARD
CN001
P1AMP BOARD
CN442
MAIN POWERTRANSFORMER
SUB POWERTRANSFORMER
(AC IN)
NOT REPLACEABLE:BUILT IN TRANSFORMER
∗
∗
(GT2
2: M
X/GT
55:M
X)
(GT22: AR/GT55: AR)
(GT2
2: A
R, A
US/G
T55:
AR)
(GT2
2: A
R, A
US/G
T55:
AR)
(GT22: AUS)
VOLTAGESELECTOR
230 – 240V T 220V t120V
GT22: E2, E3, E13, E51/GT55: E2, E51
GT22: E2, E3, E13, E51/GT55: E2, E51
GT22: MX, AR, AUS/GT55: MX, AR
GT22: E2, E3, E13, E51, MX/GT55: E2, E51, MX
GT22: E2, E3, E13, E51, MX/GT55: E2, E51, MX
9
1 4
5
GT22: E2, E3, E13, E51/GT55: E2, E51
1
7
19
8
A
B
C
D
E
F
1 2 3 4 5 6 7 8 9
(Page 44)
(Page 37)
D908 B-6D910 F-7
Q902 A-6Q903 A-6
Ref. No. LocationRef. No. Location
D901 B-5D902 E-8D903 E-8D904 E-8D905 E-8D906 A-5
• Semiconductor Location
HCD-GT22/GT44/GT55
5555HCD-GT22/GT44/GT55
7-31. SCHEMATIC DIAGRAM – TRANS Board (GT22/GT55) –
MAIN
N1BOARD
CN001
AMP
P1BOARDCN442
(4/4)
-26.1 -36.7
-26.7
0.8
0.1
T6.3AL 250VF904
T6.3AL 250VF905
T8AL 250VF908
T8AL 250VF909
T3.15AL 250VF906
T3.15AL 250VF907
50V10C909
25V1000C911
22R910
10kR903
1kR904
10ED
B40
-TB
3D
902
10EDB40-TB3D903
10ED
B40
-TB
3D
904
10EDB40-TB3D905
10EDB40-TB3D908 1
3
3PCN901
LIVE
NEUTRAL
0.1C907
JW917
JW907
JW908
JW912
JW909
JW901
JW910
1
2
3
4
5
6
7
8
9
10
11
11PCN907
AC-3F
AC-3
AC-4F
AC-4
VF
VF
D-GND
EVER_10
STBY-RELAY
AC-P
-VFL
63V220
C908
50V100C910
UD
ZSTE
-173
0BD
906
RY
901
2SB1238-PQR-TV2
Q902
4.7kR915
2SC3052EF-T1-LEFQ903
JW925
JL901
JL902
JL903
JL904
JL905
JL906
JL907
JL914
JL915
JL916
JL919
JL920
JL921
JL923
JL924
JL926
1
3
4
5
6
7
8
9
2
PT902
MC
2838
-T11
2-1
D91
0
1
2
3
4
5
5PCN903
AC-VH
AC-VL
GND
AC-VL
AC-VH
5
2
16
17
12
14
13
18
1
15
6
10
11
4
7
3
8
9
19
MAIN POWERPT901
FH915
FH917
FH909
FH916
FH918
FH908
FH911FH912
FH914 FH913
FH907
FH910
MA
111-
TXD
901
47kR913
12kR914
22kR912
50V
C9143.3
0R911
1R908
TRANS BOARDA
101 2
B
1311
C
7 8
F
9643
D
5
E
12
JW904
JW903
JW905
JW906
(CHASSIS)
-27V REGULATOR
)GT22:AR,AUS/(GT55:AR
GT55:E2,E51,MX(GT22:E2,E3,E13,E51,MX/)
GT55:E2,E51 )GT22:E2,E3,E13,E51/(
GT55:AR )GT22:AR/(
SUB POWERTRANSFORMER
GT55:AR(GT22:AR,AUS/ )
(GT55:MXGT22:MX)
VOLTAGESELECTOR
GT22:E2,E3,E13,E51/(GT55:E2,E51 )
(GT22:MX,AR,AUS/GT55:MX,AR )
(GT55:MX,AR )GT22:MX,AR,AUS/
GT22:E2,E3,E13,E51/(GT55:E2,E51 )
TRANSFORMER
(GT22:AUS)
POWER ON/OFFRELAY DRIVE
(AC IN)
GT55:E2,E51,MX(GT22:E2,E3,E13,E51,MX/)
W901
∗
∗NOT REPRACEABLE: BILT IN TRANSFORMER
230-240V
S901
220V 120V
JW902
tT
(Page 45)
(Page 41)
HCD-GT22/GT44/GT55
5656HCD-GT22/GT44/GT55
7-32. PRINTED WIRING BOARD – TRANS Board (GT44) – : Uses unleaded solder.• See page 27 for Circuit Boards Location.
BE
Q903
D901
D906
D910
JL903
JL905
JL906
JL914
JL915
JL921
JL922
JL923
R903
R904R910R911
R914
R915
R912
R913
CE
B13
13
111
F904
F906
F907
F909
Q902
W901
R908
JW91
7
CN901
CN90
3CN
907
LP901
FH907 FH908
C908
FH909
PT901
PT902
FH910
FH913 FH914
FH917FH918
S901
RY901
D902
C914
D903
D904
D905
D908
C907
C909
C910
C911
JW90
4
JW90
6
JW907
JW90
2
JW90
3JW90
5
JW912
JW901
JW908
JW909
JW910
JW925
JW900
JW914
JW92
1
JW92
3
JW911
JW913
JW91
5
JW918
JW91
9
JW920
JW922
JW92
4
JW92
6
JW927
JW91
6
N2MAIN BOARD
CN001
P2AMP BOARD
CN442
1-872-552-
11
(11)
MAIN POWERTRANSFORMER
SUB POWERTRANSFORMER
TRANS BOARD
(AC IN)
NOT REPLACEABLE:BUILT IN TRANSFORMER
∗
∗
(E2, E3, E13, E51)
(E2, E3, E13, E51)
(E2, E3, E13, E51)
(E2, E3, E13, E51, MX)
(MX, AR, AUS)
(E2, E3, E13, E51, MX)
(AR)
(AUS)
(AR, AUS)
(MX)(AR, AUS)
(MX, AR, AUS)
VOLTAGESELECTOR
230 – 240V T 220V t120V
9
41
1
7
518
8
A
B
C
D
E
1 2 3 4 5 6 7 8 9
(Page 46)
(Page 37)
D908 B-5D910 E-7
Q902 A-6Q903 B-7
Ref. No. LocationRef. No. Location
D901 A-5D902 E-8D903 E-8D904 E-8D905 E-8D906 B-6
• Semiconductor Location
HCD-GT22/GT44/GT55
5757HCD-GT22/GT44/GT55
7-33. SCHEMATIC DIAGRAM – TRANS Board (GT44) –
BOARD(4/4)
MAIN
N2
BOARDCN442
AMP
P2
CN001
-36.1-26.1
-26.7
0.1
0.8
T8AL 250VF904
T8AL 250VF909
T3.15AL 250VF906
T3.15L 250VF907
50V10
C909
25V1000C911
22R910
10kR903
1kR904
10ED
B40
-TB
3D
902
10EDB40-TB3D903
10ED
B40
-TB
3D
904
10EDB40-TB3D905
10EDB40-TB3D908
1
3
3PCN901
LIVE
NEUTRAL
0.1C907
JW917
JW907
JW908
JW912JW901
JW91
0
JW903
JW904
JW905
JW906
0R911
1
2
3
4
5
6
7
8
9
10
11
11PCN907
AC-3F
AC-3
AC-4F
AC-4
VF
VF
D-GND
EVER_10
STBY-RELAY
AC-P
-VFL
63V
220
C90
8
50V100C910
UDZSTE-1730BD906
RY
901
2SB1238-PQR-TV2Q902
4.7kR915
2SC3052EF-T1-LEFQ903
JW925
1
2
3
3PCN903
AC
GND
AC
JL903
JL904
JL905
JL906
JL914
JL915
JL921
JL922
JL923
JL924
1
3
4
5
6
7
8
9
2
PT902
MC
2838
-T11
2-1
D91
0
S901
5
2
16
17
12
14
13
18 1
15
6
10
11
4
7
3
8
9
PT901
FH908
FH913
FH910
FH917
FH914
FH907
FH909
FH918
MA
111-
TXD
901
47kR913
12kR914
22kR912
50V
C9143.3
1R908
VOLTAGESELECTOR
TRANS BOARD
(AC IN)
(E2,E3,E13,E51)
(MX,AR,AUS)
(MX
,AR
,AU
S)
(E2,E3,E13,E51,MX)
(E2,E3,E13,E51)
(AR)
(AUS)
(E2,E3,E13,E51)
(E2,E3,E13,E51)(MX)
(AR,AUS)
(E2,E3,E13,E51,MX)(AR,AUS)
POWER ON/OFFRELAY DRIVE
-27V REGULATOR
W901
(CHASSIS)
SUB POWERTRANSFORMER
MAIN POWERTRANSFORMER
A
101 2
B
11
C
7 8
F
9643
G
D
5
E
12
∗NOT REPLACEABLE:BUILT IN TRANSFORMER
∗
120V220V230-240VT t
JW909
JW902
(Page 47)
(Page 41)
HCD-GT22/GT44/GT55
5858HCD-GT22/GT44/GT55
• IC Block Diagrams– CD Board –
IC201 TK63115SCL-G@GL
THERMAL &OVER CURRENT
PROTECTION
VOLTAGEREFERENCE
ON/OFFCONTROL
VIN 1
GND 2
VCONT 3 NC4
VOUT5+–
– DRIVER Board –
IC701, 712 BA6956AN
1 2 3 4 5 6 7 8 9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM VCC
FIN
GND
RIN
IC401 BA5826SFP-E2
1
2
3
4
5
6
7
8
9
10
11
1213
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVELSHIFT
LEVELSHIFT
THERMALSHUT-DOWNREGULATORBIAS TRAP
LEVELSHIFT
MUTE
LEVELSHIFT D.BUFF
D.BUFF
D.BUFFGND
IN4
IN4'
BIAS
VCC
VCC
IN3'
IN3
VO3(+)
VO3(–)
VO4(–)
VO4(+)
RESETt
OPIN
VO1(–)
REGB
VO1(+)
IN1
RESET
REGOUT
MUTE
GND
IN2'
IN2
VO2(+)
VO2(–)GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGU
LATO
R
VCC
VCC
– USB Board –
IC915 R5523N001B-TR-F
1EN
2GND
3FLG
4 IN
5 OUT
GATECONTROL
UVLO
THERMALSHUTDOWN
CURRENTLIMIT
FLAGDELAY
– MAIN Board –
IC102 R2S15208SP
REFIN 1
VCC 4
CLOCK6
REF AMP
GND7
ROUT8
DATA 5 MCUINTERFACE
LIN 2
RIN 3
LOUT9
REFOUT10
3BANDPARAMETRICEQUALIZER
1 2
INPUTSELECTOR
SURROUNDVOCAL CUT
TONE CONTROL(BASS, TREBLE, MID)
TONE CONTROL(BASS, TREBLE, MID)
MCUINTERFACE
RECOUT
INC2
IND2
VOLIN2INB2INA2
MONO/STEREO
REF
TONEON/OFF
TONEON/OFF
BASSBOOSTON/OFF
39
MIX2 37
VCC 38
40
3
REC2
5
BASS
12
6
BASS
22
7
TRE2
8
MID
12
9
MID
22
10
TONE
OUT2
4
SAOU
T
+
+
29 28
INPUTSELECTOR
RECOUT
INC1
IND1
INA1 31
MIX1 36
GND 32
REFIN 33
SUR2 35SUR1 34
30
INB1
27
REC1
26
BASS
1
25
BASS
21
24
TRE1
23
MID
11
22
MID
21
21
TONE
OUT1
+
VOCALCUTON/OFF
VOCALCUTON/OFF
TONE ATT
TONE ATT
11
BB1212BB2213
OUT214
CLOCK15DATA16
VOLUME
VOLIN1
BASSBOOSTON/OFF
20
BB1119BB2118
OUT117
VOLUME
IC103 R2S15207FP
59
HCD-GT22/GT44/GT55
IC301, 302 TC74HC4066AFT (EL)
1I/O VCC1 14
1C13
4C12
4I/O11
4O/I10
1O/I 2
2O/I 3
2I/O 4
2C 5
3C 6
GND 7
3O/I9
3I/O8
IC303 TC74VHC157FT (EKJ)
SELECT 111
1A 2
3
4
5
6
7
INPUT
INPUT
OUTPUT
OUTPUT
1A
1B
1Y
2A
2B
2Y
1B
1Y
2A
2B
2Y
GND 8
VCC
STROBE
16
4A
15
14
13
1112
11
10
INPUT
INPUT
OUTPUT
OUTPUT
G
4B
4Y
3A
4A
4B
4Y
3A
3B
9
3B
3Y3Y
S
– AMP Board –
IC441 STK415-130-E (GT22/GT55)
2 3 4 5 6 7 8 9 10 11 12 13
-VCC
+VCC
CH1_
OUT+
CH1_
OUT-
CH2_
OUT+
CH2_
OUT-
+PRE SU
BGN
D
CH1-
INCH
1-NF
ST-B
Y
1
-PRE
14 15
CH2-
NFCH
2-IN
IC441 STK403-130-M-E (GT44)
5 6 8 9 10 11 12 13 14 15 16 17
-PRE -V
H
CH1_
OUT+
CH1_
OUT-
CH2_
OUT+
CH2_
OUT-
+PRE SU
BGN
D
CH1-
INCH
1-NF
ST-B
Y
4
-OFF
_SET
18 19
CH2-
NFCH
2-IN
2 3
-VL
+OFF
_SET
1
+VL
7
+VH
– SUB WOOFER Board –
IC501 STK404-130S (GT44/GT55)
2 3 4 5 6 7 8 9 10 11 12 13
POSI
SW-IN
SW-N
F
SUB
-PRE
+PRE
BIAS
+BI
AS-
-VCC
+VSS -R
E+R
E
1
POSI
60
HCD-GT22/GT44/GT55
– PANEL Board –
IC701 NJU3427FA2
6789
15 16 17 18 19 20 21 22 23 24 25 26
272829303132333435363738
39
52
1NC
RD4RD5RD6RD7
DR12
DR13
DR14
DR15
DR16
DR17
DR18
DR19
DR20
DR21
DR22
DR23
DR35DR34DR33DR32DR31DR30DR29DR28DR27DR26DR25DR24
NC
RST
TIMING/SEGMENT SELECTOR
HIGH VOLTAGE DRIVER
ADDRESSCOUNTER
DISPLAYDATA RAM
SEGMENTDATA LATCH
INSTRUCTIONDECODER
SERIALBUFFER
RESETCIRCUIT
OSC
TIMINGCOUNTER
DUTYCOUNTER
TIMINGDECODER
51CS
50NC
49
SI
48
SCK
47
NC
46
XT
45
XT
44
VSS
43
NC
42
VDD
41
NC
40
VFDP
14
NC
2345
RD0RD1RD2RD3
10111213
RD8RD9
RD10RD11
61
HCD-GT22/GT44/GT55
• IC Pin Function DescriptionCD BOARD IC101 TC94A70FG-008 (S, D) (CD-MP3 PROCESSOR)
Pin No. Pin Name I/O Description
1 AVSS3 - Ground terminal
2 RFZi I RF ripple zero crossing signal input terminal
3 RFRP O RF ripple signal output terminal
4 SBAD/RFDC O Sub beam addition signal or RF peak detection signal output terminal Not used
5 FEi O Focus error signal output terminal Not used
6 TEi O Tracking error signal output terminal
7 TEZi I Tracking error zero crossing signal input terminal
8 AVDD3 - Power supply terminal (+3.3 V)
9 FOo O Focus coil drive signal output terminal
10 TRo O Tracking coil drive signal output terminal
11 VREF I Reference voltage (+1.65V) input terminal
12 FMo O Sled motor drive signal output terminal
13 DMo O Spindle motor drive signal output terminal
14 VSSP3 - Ground terminal
15 VCOi I VCO control voltage input terminal
16 VDDP3 - Power supply terminal (+3.3 V)
17 VDD1 - Power supply terminal (+1.5 V)
18 VSS - Ground terminal
19 FGiN I FG signal input terminal Not used
20 IO0 (/HSO) I Disc inner position detection signal input terminal
21 IO1 (/UHSO) O Not used
22 XVSS3 - Ground terminal
23 XI I System clock input terminal (16.9344 MHz)
24 XO O System clock output terminal (16.9344 MHz)
25 XVDD3 - Power supply terminal (+3.3 V)
26 DVSS3 - Ground terminal
27 RO O Analog audio (R-ch) signal output terminal
28 DVDD3 - Power supply terminal (+3.3 V)
29 DVR O Reference voltage (+1.65V) output terminal
30 LO O Analog audio (L-ch) signal output terminal
31 DVSS3 - Ground terminal
32 VDDT3 - Power supply terminal (+3.3 V)
33 VSS1 - Ground terminal
34 VDD1 - Power supply terminal (+1.5 V)
35 VDDM1 - Power supply terminal (+1.5 V)
36 SRAMSTB I S-RAM standby mode control signal input terminal Fixed at "L" in this set
37 XRST I Reset signal input from the system controller "L": reset
38, 39 BUS0, BUS1 I/O Serial data input/output from the system controller or USB controller
40 BUS2 (SO) I/O Serial data input/output from the system controller or USB controller
41 BUS3 (SI) I/O Serial data input/output from the system controller or USB controller
42 BUCK (CLK) I Serial data transfer clock signal input from the system controller or USB controller
43 XCCE I Chip enable signal input from the system controller or USB controller
44 TEST I Setting terminal for test mode Normally fixed at "L"
45 IRQ I Interrupt request signal input terminal Not used
46 AoUT3 (PO4) O Request signal output to the USB controller
47 AoUT2 (PO5) O Audio data output to the USB controller
62
HCD-GT22/GT44/GT55
Pin No. Pin Name I/O Description
48 PIO0 O Request signal output to the system controller or USB controller
49, 50 PIO1, PIO2 O Not used
51 PIO3 I Gate signal input from the USB controller
52 VSS1 - Ground terminal
53 VDDT3 - Power supply terminal (+3.3 V)
54 SBSY O Subcode block sync signal output to the system controller
55 SBOK/FOK O Not used
56 IPF O Not used
57 SFSY/LOCK O Not used
58 ZDET O Zero detection signal output terminal Not used
59 GPIN I Not used
60 MS I Microcomputer interface mode selection signal input terminal Fixed at "H" in this set
61 DOUT (PO6) O Digital audio data output terminal Not used
62 AOUT (PO7) O Audio data output terminal Not used
63 BCK (PO8) O Bit clock signal output to the USB controller
64 LRCK (PO9) O L/R sampling clock signal output terminal Not used
65 AIN (PI4) I Digital audio data input from the USB controller
66 BCKi (PI5) I Bit clock signal input from the USB controller
67 LRCKi (PI6) I L/R sampling clock signal input from the USB controller
68 VDD1 - Power supply terminal (+1.5 V)
69 VSS - Ground terminal
70 AWRC - Not used
71 PVDD3 - Power supply terminal (+3.3 V)
72 PDO O Phase error margin signal between EFM signal and PLCK signal output terminal
73 TMAXS O TMAX detection signal output terminal Not used
74 TMAX O TMAX detection signal output terminal
75 LPFN I Inverted signal input from the operation amplifier for PLL loop filter
76 LPFo O Signal output from the operation amplifier for PLL loop filter
77 PVREF I Reference voltage (+1.65V) input terminal
78 VCOF O VCO filter output terminal
79 PVSS3 - Ground terminal
80 SLCo O EFM slice level output terminal
81 RFi I RF signal input terminal
82 RFRPi I RF ripple signal input terminal
83 RFEQo O EFM slice level output terminal
84 VRo O Reference voltage (+1.65V) output terminal
85 RESiN O External resistor connection terminal
86 VMDiR O Reference voltage (+1.65V) output terminal for automatic power control circuit
87 TESTR O Low-pass filter terminal for RFEQO offset correction
88 AGCi I RF signal amplitude adjustment amplification input terminal
89 RFo O RF signal generation amplification output terminal
90 RVDD3 - Power supply terminal (+3.3 V)
91 LDo OLaser diode on/off control signal output to the automatic power control circuit"H": laser diode on
92 MDi I Light amount monitor input from the laser diode of optical pick-up block
93 RVSS3 - Ground terminal
94 FNi2 (C) I Main beam (C) input from the optical pick-up block
63
HCD-GT22/GT44/GT55
Pin No. Pin Name I/O Description
95 FNi1 (A) I Main beam (A) input from the optical pick-up block
96 FPi2 (D) I Main beam (D) input from the optical pick-up block
97 FPi1 (B) I Main beam (B) input from the optical pick-up block
98 TPi (F) I Sub beam (F) input from the optical pick-up block
99 TNPC O External capacitor connection terminal
100 TNi (E) I Sub beam (E) input from the optical pick-up block
64
HCD-GT22/GT44/GT55
USB BOARD IC901 TMP92CD28AFG-2CB4 (USB CONTROLLER)
Pin No. Pin Name I/O Description
1 /RESET I Reset signal input from the system controller "L": reset
2 DI I Ready to send signal input from the system controller
3, 4 NO USE O Not used
5 G-3 I Function selection signal input terminal Fixed at "H" in this set
6 DVCC - Power supply terminal (+3.3 V)
7 to 9 NO USE O Not used
10 DVSS - Ground terminal
11 DVCC - Power supply terminal (+3.3 V)
12 RVOUT1 O Reference voltage (+3.3 V) output terminal
13, 14 RVIN I Reference voltage (+3.3 V) input terminal
15 RVOUT2 O Reference voltage (+3.3 V) output terminal
16 DVCC - Power supply terminal (+3.3 V)
17 DVSS - Ground terminal
18 to 25 D0 to D7 I/O Two-way data bus with the S-RAM
26 DVSS - Ground terminal
27 DVCC - Power supply terminal (+3.3 V)
28 to 35 D8 to D15 I/O Two-way data bus with the S-RAM
36 A0 O Address signal output terminal Not used
37 to 43 A1 to A7 O Address signal output to the S-RAM
44 DVSS - Ground terminal
45 DVCC - Power supply terminal (+3.3 V)
46 to 54 A8 to A16 O Address signal output to the S-RAM
55 to 58 BUS0 to BUS3 O Serial data output to the CD-MP3 processor
59 /BUCK O Serial data transfer clock signal output to the CD-MP3 processor
60 /CCE O Chip enable signal output to the CD-MP3 processor
61 NO USE O Not used
62 DVSS - Ground terminal
63 DVCC - Power supply terminal (+3.3 V)
64 RD O Output enable signal output to the S-RAM
65 WR O Write enable signal output to the S-RAM
66 SRLLB O Lower-byte control signal output to the S-RAM
67 SRLUB O Upper-byte control signal output to the S-RAM
68 NO USE O Not used
69 BOOT I Boot mode selection signal input terminal "L": boot mode
70 CS2 O Chip select signal output to the S-RAM
71 LRCK O L/R sampling clock signal output to the CD-MP3 processor
72 AM1 I Function mode selection signal input terminal Fixed at "H" in this set
73 X2 O System clock output terminal (9 MHz)
74 DVSS - Ground terminal
75 X1 I System clock input terminal (9 MHz)
76 DVCC - Power supply terminal (+3.3 V)
77 USBOC I Over current detection signal input terminal
78 USBPON O USB power (VBUS) on/off control signal output terminal "H": power on
79 D+ I/O Two-way data (positive) bus from the USB connector
80 D- I/O Two-way data (negative) bus from the USB connector
81 AM0 I Function mode selection signal input terminal Fixed at "H" in this set
65
HCD-GT22/GT44/GT55
Pin No. Pin Name I/O Description
82 NO USE O Not used
83 DVSS - Ground terminal
84 DO O Clear to send signal output to the system controller
85 DATA I Audio data input from the CD-MP3 processor
86 CLOCK I Audio data transfer clock signal input from CD-MP3 processor
87 TXD1 O Serial data output to the system controller
88 RXD1 I Serial data input from the system controller
89 NO USE O Not used
90 SDA I/O Two-way EEPROM IIC data bus terminal Not used
91 SCL I/O Two-way EEPROM IIC clock bus terminal Not used
92 BCK O Bit clock signal output to the CD-MP3 processor
93 DATA O Audio data output to the CD-MP3 processor
94 GATE O Gate signal output to the CD-MP3 processor
95 DVCC - Power supply terminal (+3.3 V)
96 REQ I Request signal input from the CD-MP3 processor
97 ST-REQ I Request signal input from the CD-MP3 processor
98, 99 G-1, G-2 I Function selection signal input terminal Fixed at "H" in this set
100 DVSS - Ground terminal
66
HCD-GT22/GT44/GT55
MAIN BOARD IC901 uPD78F1165GF (S)-GAS-AX (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1 O-SYS-MUTE O Muting on/off control signal output terminal "L": muting on
2 O-SWR O Sub woofer speaker on/off relay drive signal output terminal (GT44/GT55)
3O-FRONT-SP-
RELAYO Power on/off control signal output for speaker relays
4 O-CD-POWER O Power on/off control signal output for CD block
5 O-POWER-RELAY
O Power on/off relay drive signal output terminal "H": power on
6 CD XRST O Reset signal output to the CD-MP3 processor "L": reset
7 CD-M-MUTE O Muting signal output to the coil/motor driver
8 O-USB-POWER O Power on/off control signal output for USB block
9 I-USB-CTS (DI) I Clear to send signal input from the USB controller
10 O-USB-RTS (DO) O Ready to send signal output to the USB controller
11 O-USB-RESET O Reset signal output to the USB controller "L": reset
12 CD-BUCK O Serial data transfer clock signal output to the CD-MP3 processor
13 CD-CCE O Chip enable signal output to the CD-MP3 processor
14 to 17 CD-BUS3 (I/O) toCD-BUS0 (I/O)
I/O Two-way data bus with the CD-MP3 processor
18 MP3 IREQ I Request signal input from the CD-MP3 processor
19 CD-SEL1 O Data selection signal output terminal
20 EVSS1 - Ground terminal
21 CD-SEL2 O Data selection signal output terminal
22 O-LM-R O Loading motor control signal output terminal (reverse direction)
23 O-LM-F O Loading motor control signal output terminal (forward direction)
24 O-TM-R O Table motor control signal output terminal (reverse direction)
25 O-TM-F O Table motor control signal output terminal (forward direction)
26 I-CD-SENS I Disc table address sensor input terminal
27 I-OPEN-SW I Disc table open/close detection switch input terminal "L": open, "H": close
28 O-LC72121-CE O Chip enable signal output to the tuner (FM/AM)
29 I-SBSY I Subcode block sync signal input from the CD-MP3 processor
30 EVDD1 - Power supply terminal (+3.3V)
31 I-LV23004T-DI I Serial data input from the tuner (FM/AM)
32O-LV23004T
-CLKO Serial data transfer clock signal output to the tuner (FM/AM)
33 O-LV23004T-DO O Serial data output to the tuner (FM/AM)
34 I-TUNED I Tuning detection signal input from the tuner
35 I-AC-CUT I AC power off detection signal input terminal
36 O-STK-MUTE O Standby signal output to the power amplifier (for front speaker)
37 O-USB-LED O LED drive signal output terminal for REC (USB) indicator "H": LED on
38 O-G-LED O LED drive signal output terminal for GUITAR indicator "H": LED on
39 O-V-LED O LED drive signal output terminal for VOCAL indicator "H": LED on
40 O-B-LED O LED drive signal output terminal for BASE indicator "H": LED on
41 O-F-DATA O Serial data output to the electrical volume
42 I-USB-RXD (SI) I Serial data input from the USB controller
43O-USB-
TXD (SO)O Serial data output to the USB controller
44 O-P-DATA O Serial data output to the parametric equalizer (GT55)
67
HCD-GT22/GT44/GT55
Pin No. Pin Name I/O Description
45 O-AUDIO-CLK OSerial data transfer clock signal output to the electrical volume and parametric equalizer (GT55)Serial data transfer clock signal output to the electrical volume (GT22/GT44)
46 O-REC/PB ODeck-A/B selection and recording/playback selection signal output terminal"L": deck-B and playback, "H": deck-A and recording
47 AVREF1 I Reference voltage (+3.3V) input terminal
48 O-REC-MUTE O Recording muting on/off control signal output terminal "L": muting on
49 O-BIAS O Recording bias on/off control signal output terminal "H": bias on
50 AVREF0 I Reference voltage (+3.3V) input terminal
51 AVSS - Ground terminal
52 I-USB-MONI I USB power (VBUS) monitoring input terminal
53 I-SUFIX I Setting terminal for the destination
54 I-MODEL I Setting terminal for model discrimination
56 I-KEY4 I Front panel key input terminal (A/D input) (GT55)
57 I-PROTECTOR I AC power detection signal input, and protect signal input terminal
58 I-HP/MIC I Headphone and microphone plug insert detection signal input terminal (A/D input)
59 I-VACS I VACS signal input terminal (A/D input)
60 I-TAPE-STAT IDeck-A/B cassette detection signal input from the tape mechanism deck block, and Recording-proof detection signal input from the tape mechanism deck block (A/D input)
61 to 64 I-KEY0 to I-KEY3 I Front panel key input terminal (A/D input)
65 I-JOG I Jog dial pulse input from the rotary encoder (multi jog) (A/D input)
66 I-VOL I Jog dial pulse input from the rotary encoder (VOLUME) (A/D input)
67 I-STREAM I Audio signal input for stream LED (A/D input)
68O-NJM3427FA2
-CSO Chip select signal output to the fluorescent indicator tube driver
69O-NJM3427FA2
-RESETO System reset signal output to the fluorescent indicator tube driver "L": reset
70 to 75O-S-LED1 toO-S-LED6
O LED drive signal output of the stream indicator "H": LED on
76 O-SWR-LED O LED drive signal output of the SUBWOOFER indicator "H": LED on (GT44/GT55)
77 O-STBY-LED O LED drive signal output terminal for STANDBY indicator "H": LED on
78 I-REEL-A I Deck-A tape reel rotating detection signal input from the tape mechanism deck block
79 I-REEL-B I Deck-B tape reel rotating detection signal input from the tape mechanism deck block
80 I-RDS-CLK I RDS data transfer clock signal input terminal Not used
81 I-SIRCS-IN I SIRCS signal input from the remote control receiver
82 NC - Not used
83 I-WAKEUPKEY I Wake up signal input terminal
84O-NJM3427A-
DATAO Serial data output to the fluorescent indicator tube driver
85 O-MOTOR O Capstan/reel motor drive signal output terminal "H": motor on
86O-NJM3427A2-
CLKO Serial data transfer clock signal output to the fluorescent indicator tube driver
87 O-B-SOL O Deck-B side trigger plunger drive signal output terminal "H": plunger on
88 O-A-SOL O Deck-A side trigger plunger drive signal output terminal "H": plunger on
89 TOOL0 I Not used
90 RESET ISystem reset signal input from the reset signal generator "L": resetFor several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
68
HCD-GT22/GT44/GT55
Pin No. Pin Name I/O Description
91 XT2 O Sub system clock output terminal (32.768 kHz)
92 XT1 I Sub system clock input terminal (32.768 kHz)
93 FLMD0 I Not used
94 X2 O Main system clock output terminal (20 MHz)
95 X1 I Main system clock input terminal (20 MHz)
96 REGC I External capacitor connection terminal for regulator
97 VSS - Ground terminal
98 EVSS0 - Ground terminal
99 VDD - Power supply terminal (+3.3V)
100 EVDD0 - Power supply terminal (+3.3V)
69
HCD-GT22/GT44/GT55SECTION 8
EXPLODED VIEWS
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
EX-CHANGE/DISC SKIP, Z OPEN/CLOSE, x,CD-USB SYNC/REC1, CD-TAPE SYNC,
TAPE REC PAUSE/START)229 2-892-137-01 BUTTON (FOLDER)230 4-231-841-01 SPRING (HEART CAM-B)
231 4-231-825-01 CAM (B), HEART232 2-892-300-01 SPRING (TC-R)233 2-892-126-01 PANEL, FRONT (GT55)233 2-892-126-11 PANEL, FRONT (GT44)233 3-209-722-01 PANEL, FRONT (GT22)
not supplied
not supplied
201202
203204206
206
205
205
207
208 209
210
211
220212
213214
215216
219
218
221
224
226
228229
227
230231
210
232
233
225
Note 1: Ref. No. 203 and Ref. No. 233 are parts glued together.When you exchange Ref. No. 203 or Ref. No. 233, exchange simultaneously.
Note 2:Ref. No. 213 and Ref. No. 214 are parts glued together.When you exchange Ref. No. 213 or Ref. No. 214, exchange simultaneously.
74
HCD-GT22/GT44/GT55
8-6. MAIN BOARD SECTION
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
251 A-1234-729-A MAIN BOARD, COMPLETE (GT55: E2)251 A-1234-731-A MAIN BOARD, COMPLETE (GT44: E2)251 A-1234-733-A MAIN BOARD, COMPLETE (GT22: E2)251 A-1271-520-A MAIN BOARD, COMPLETE (GT55: E51, AR)251 A-1271-523-A MAIN BOARD, COMPLETE (GT55: MX)
251 A-1271-844-A MAIN BOARD, COMPLETE (GT44: E51, AR)251 A-1271-845-A MAIN BOARD, COMPLETE (GT44: E3, E13)251 A-1271-846-A MAIN BOARD, COMPLETE (GT44: AUS)251 A-1271-847-A MAIN BOARD, COMPLETE (GT44: MX)251 A-1271-850-A MAIN BOARD, COMPLETE (GT22: E51, AR)
251 A-1271-851-A MAIN BOARD, COMPLETE (GT22: E3, E13)251 A-1271-852-A MAIN BOARD, COMPLETE (GT22: AUS)
IC006 6-702-771-01 IC TA78033LSIC011 8-759-231-56 IC TA7809SIC021 8-759-231-56 IC TA7809SIC102 6-709-330-01 IC R2S15208SP (GT55)IC103 6-709-331-01 IC R2S15207FP
IC251 8-759-278-58 IC NJM4558V-TE2IC252 8-759-278-58 IC NJM4558V-TE2 (GT44/GT55)IC301 8-759-523-03 IC TC74HC4066AFT (EL)IC302 8-759-523-03 IC TC74HC4066AFT (EL)
IC303 6-707-870-01 IC TC74VHC157FT (EKJ)
IC901 (Not supplied) IC uPD78F1165GF (S)-GAS-AXIC902 8-759-713-61 IC PST3429UL
< JUMPER RESISTOR >
JR104 1-216-864-11 SHORT CHIP 0JR105 1-216-864-11 SHORT CHIP 0JR106 1-216-864-11 SHORT CHIP 0JR107 1-216-864-11 SHORT CHIP 0JR108 1-216-864-11 SHORT CHIP 0
JR109 1-216-864-11 SHORT CHIP 0JR110 1-216-864-11 SHORT CHIP 0JR111 1-216-864-11 SHORT CHIP 0JR112 1-216-864-11 SHORT CHIP 0JR113 1-216-864-11 SHORT CHIP 0
JR114 1-216-864-11 SHORT CHIP 0JR115 1-216-864-11 SHORT CHIP 0JR118 1-216-864-11 SHORT CHIP 0JR119 1-216-864-11 SHORT CHIP 0JR120 1-216-864-11 SHORT CHIP 0
IC301 6-702-945-01 IC NJM14558V-TE2IC401 8-759-278-58 IC NJM4558V-TE2
< JUMPER RESISTOR >
JR301 1-216-864-11 SHORT CHIP 0JR302 1-216-864-11 SHORT CHIP 0JR303 1-216-864-11 SHORT CHIP 0JR304 1-216-864-11 SHORT CHIP 0JR305 1-216-864-11 SHORT CHIP 0
JR306 1-216-864-11 SHORT CHIP 0JR307 1-216-864-11 SHORT CHIP 0JR308 1-216-864-11 SHORT CHIP 0JR309 1-216-864-11 SHORT CHIP 0JR310 1-216-864-11 SHORT CHIP 0
JR311 1-216-864-11 SHORT CHIP 0JR313 1-216-864-11 SHORT CHIP 0JR315 1-216-864-11 SHORT CHIP 0JR316 1-216-864-11 SHORT CHIP 0JR317 1-216-864-11 SHORT CHIP 0
JR318 1-216-864-11 SHORT CHIP 0JR319 1-216-864-11 SHORT CHIP 0JR320 1-216-864-11 SHORT CHIP 0
< TRANSISTOR >
Q301 6-551-597-01 FET 2SJ461-TQ302 6-551-597-01 FET 2SJ461-TQ303 8-729-045-62 FET 2SK2158-T2BQ304 8-729-045-62 FET 2SK2158-T2BQ305 6-551-696-01 TRANSISTOR ISA1235AC1TP-1EF
Clicking the version allows you to jump to the revised page.Also, clicking the version at the upper right on the revised page allows you to jump to the next revisedpage.