SERVICE MANUAL COMPACT DISC DECK MICROFILM SPECIFICATIONS HTC-VX500 E Model This stereo system is equipped with the Dolby B- type noise reduction system. * Manufactured under license from Dolby Laboratories Licensing Corporation. DOLBY, the double-D symbol ; and “PRO LOGIC” are trademarks of Dolby Laboratories Licensing Corporation. Model Name Using Similar Mechanism HTC-V5550 CD CD Mechanism Type CDM38-5BD24 Section Base Unit Type BU-5BD24 Optical Pick-up Name KSS-213BA/F-NP Tape deck Model Name Using Similar Mechanism HTC-V5550 Section Tape Transport Mechanism Type TCM-230AWR2 TCM-230PWR2 • This set is the deck and Video CD section in MHC-VX500/VX700AV. Video section Inputs AV INPUT VIDEO (phono jack): 1Vp-p, 75 Ω VIDEO IN (phono jack) 1Vp-p, 75 Ω Outputs MONITOR OUT (phono jack): 1Vp-p, 75 Ω VIDEO OUT (phono jack) 1Vp-p, 75 Ω S-VIDEO (4-pin/mini-DIN jack): Y: 1Vp-p, unbalanced, sync negative C: 0.286Vp-p, load impedance 75 Ω VIDEO CD/CD player section System Compact disc, digital audio and video system Laser Semiconductor laser (λ=780nm) Emission duradon: continuous Laser output Max. 44.6μW* *This output is the value measured at a diatance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. Frequency response 20 Hz – 20 kHz (±1 dB) Wavelength 780 – 790 nm Signal to noise ratio More than 90 dB Dynamic range More than 90 dB Video Color System format NTSC, PAL CD OPTICAL DIGITAL OUT (Square optical connector jack, rear panel) Wavelength 600 nm Output Level –18 dBm Tape player section Recording system 4-track 2-channel stereo Frequency response 40 – 13,000 Hz (±3 dB), (DOLBY NR OFF) using Sony TYPE cassette 40 – 14,000 Hz (±3 dB), using Sony TYPE cassette General Dimensions (w/h/d) Approx. 288 × 205 × 360 mm Mass Approx. 4.6 kg Design and specifications are subject to change without notice.
64
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SERVICE MANUAL
COMPACT DISC DECK
MICROFILM
SPECIFICATIONS
HTC-VX500E Model
This stereo system is equipped with the Dolby B-type noise reduction system.* Manufactured under license from Dolby Laboratories Licensing Corporation.DOLBY, the double-D symbol ; and “PRO LOGIC”are trademarks of Dolby Laboratories LicensingCorporation.
Model Name Using Similar Mechanism HTC-V5550
CD CD Mechanism Type CDM38-5BD24
Section Base Unit Type BU-5BD24
Optical Pick-up Name KSS-213BA/F-NP
Tape deckModel Name Using Similar Mechanism HTC-V5550
Section Tape Transport Mechanism TypeTCM-230AWR2
TCM-230PWR2
• This set is the deck and Video CDsection in MHC-VX500/VX700AV.
Design and specifications are subject to change without notice.
2
CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardousradiation exposure.
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 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.
Laser component in this product is capable of emitting radiationexceeding the limit for Class 1.
This appliance is classified as a CLASS 1 LASER product.The CLASS 1 LASER PRODUCT MARKING is located on therear exterior.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCKOR 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 CHECK
The 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.
LASER DIODE AND FOCUS SEARCH OPERATIONCHECK
Carry out the “S curve check” in “CD section adjustment” and checkthat the S curve waveform is output three times.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITHMARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTSLIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESECOMPONENTS WITH SONY PARTS WHOSE PART NUMBERSAPPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTSPUBLISHED BY SONY.
2. GENERAL ····································································· 7
3. DISASSEMBLY3-1. Loading Panel ····································································· 83-2. Back Panel and CD Mechanism Deck ······························· 83-3. Front Panel ········································································· 93-4. TC Mechanism Deck and Cassette Holder ························· 93-5. Disk Tray ········································································· 10
• Servo Section ································································· 16• Audio/Video CD Section ················································ 17• Tape Deck Section·························································· 18• Power Section ································································ 19
6-3. Printed Wiring Board CD Section ·································· 206-4. Schematic Diagram CD Section ····································· 216-5. Schematic Diagram Deck Section ·································· 226-6. Printed Wiring Board Deck Section ······························· 236-7. Printed Wiring Board Main Section ······························· 246-8. Schematic Diagram Main (1/2) Section ························· 256-9. Schematic Diagram Main (2/2) Section ························· 266-10. Printed Wiring Board Leaf SW Section ························· 276-11. Schematic Diagram Leaf SW Section ···························· 276-12. Printed Wiring Board Panel Section ······························· 286-13. Schematic Diagram Panel Section ································· 296-14. Schematic Diagram CD Motor Section ·························· 306-15. Printed Wiring Board CD Motor Section ······················· 316-16. Printed Wiring Board Video Section ······························ 326-17. Schematic Diagram Video (1/2) Section ························ 336-18. Schematic Diagram Video (2/2) Section ························ 346-19. IC Block Diagrams ··························································· 386-20. IC Pin Function Description ············································· 40
7. EXPLODED VIEWS7-1. Case and Back Panel Section ··········································· 477-2. Front Panel Section ·························································· 487-3. CD Mechanism Section 1 (CDM38-5BD24) ··················· 497-4. CD Mechanism Section 2 (CDM38-5BD24) ··················· 507-5. Base Unit Section (BU-5BD24) ······································· 517-6. TC Mechanism Section 1 (TCM-230AWR2/230PWR2) · 527-7. TC Mechanism Section 2 (TCM-230AWR2/230PWR2) · 53
8. ELECTRICAL PARTS LIST ··································· 54
4
SECTION 1SERVICING NOTE
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCHTURNS OFF
1 Remove the Case.
Note for Installation (ROTARY ENCODER)
3 Pull-out the disc tray.
2 Turn the cam to the direction of arrow.
BU cam
GrooveSection A
Note:When attaching the Base unit, Insert the section A into the groove of BU cam.
Note:When attaching the BU cam, engage the Rotary encoder switch as shown in the figure.
5
CD > (AMS) s (TAPE B) button + DISC3 button
. (AMS) s (TAPE B) button + DISC1 button
M s (TAPE A) button + DISC3 button
m s (TAPE A) button + DISC1 button
TAPE A > (AMS) DISC SKIP button + H (TAPE B)
TAPE B . (AMS) DISC SKIP button + h (TAPE B)
M DISC SKIP button + H (TAPE A)
m DISC SKIP button + h (TAPE A)
Connection and Operations of the Unit by ItselfThis unit cannot be operated by itself as it does not come with a power supply.Connect STR-VX500/VX700 as shown in “Connection 1” before beginning servicing.
Connection 1: If there is STR-VX500/VX700.
Use a power supply jig (PFJ-1) if the STR-VX500/VX700 is not available.Connect the conversion jig for connection (J-2501-138-A) as shown in “Connection 2” before beginning servicing.
Connection 2: If there is not STR-VX500/VX700.
To operate the unit by itself, turn on the power of the conduction jig (PFJ-1), and press the s (TAPE A) , s (TAPE B) ,and H (TAPE B) buttons together in this order.
As this unit is not equipped with fast forward and rewind buttons, buttons need to be combined and pressed together for different functionswhen operating the unit by itself. (See Table-2.)However, it will not operate properly if operations are performed without switching the functions.Perform the following procedure to switch the functions before operating the unit.The function selected is indicated by the DISC NUMBER indicator.
Table 1 Switching the Functions Table 2 Pressing Combination of Buttons When Operated by Itself
Function
CD x (CD) button 1< 2< 3
+ HI-SPEED DUBBING button
TAPE A x (CD) button 1< 2 3
+ z REC button
TAPE B x (CD) button 1 2< 3
+ h (TAPE A) button
Operation
The function can be differentiated by the lighting of this part of the indicator.↓ ↓
1< 2< 3
Indicator Deck Function Operation
STR-VX500/VX700
SYSTEM CABLE 17P
SET
AC IN
SetConversionJig
(J-2501-138-A)
Power SW
Service Box (PFJ-1) Connectorcable 17P
(Supplied with PFJ-1)
Connectorcable 17P
(Supplied withConversion Jig or Set)
FH-E939,838,737MHC-6600,5600,3600,2600CDP/TC SYSTEM CONTROL
6
Procedure:1. After turning ON the power of the conduction jig (PFJ-1), press the s (TAPE A) button, s (TAPE B) button, and H (TAPE B)
button together in this order.2. Press the s (TAPE B) button while pressing the x (CD) button to set the aging mode and start aging.3. To end aging, press the three buttons in step 1.
Cold ResetNOTE: This is the mode for operating the unit by itself. Take note that the operating method differs when connected to the STR-VX500/
VX700. This method is described in the manuals of the STR-VX500 and STR-VX700. Refer to these manuals for details.
This mode is used for initializing the RAM contents. Perform this mode when returning the repaired product to the customer.
Procedure:1. After turning ON the power of the conduction jig (PFJ-1), press the s (TAPE A) button, s (TAPE B) button, and H (TAPE B)
button together in this order.2. Press the X (TAPE) button while pressing the x (CD) button.
CD Delivery ModeNOTE: This is the mode for operating the unit by itself. Take note that the operating method differs when connected to the STR-VX500/
VX700. This method is described in the manuals of the STR-VX500 and STR-VX700. Refer to these manuals for details.This mode moves the pickup to areas where the anti-vibration is stronger. Perform this mode when returning the repaired productto the customer.
Procedure:1. After turning ON the power of the conduction jig (PFJ-1), press the s (TAPE A) button, s (TAPE B) button, and H (TAPE B)
button together in this order.2. Press the CD SYNCHRO button while pressing the x (CD) button.3. Wait untill z (TAPE B) indicator is on befor disconnect from the conduction jig (PFJ-1).
LED All Lit ModeNOTE: Always perform this mode when operating the unit by itself.
This mode is used for lighting up the whole LED.
Procedure:1. After turning ON the power of the conduction jig (PFJ-1), press the s (TAPE A) button, s (TAPE B) button, and H (TAPE B)
button together in this order.2. The whole LED can be turned on and off each time the s (TAPE A) button is pressed while pressing the x (CD) button.3. Press the three buttons in step 1 at the end.
Key Check ModeNOTE: Always perform this mode when operating the unit by itself.
This mode is used for checking the key inputs of the buttons of the unit.
Procedure:1. After turning ON the power of the conduction jig (PFJ-1), press the s (TAPE A) button, s (TAPE B) button, and H (TAPE B)
button together in this order.2. Press the DOLBY NR button while pressing the x (CD) button to set the key check mode, and the indicator displays “3 HX”.3. The number of buttons pressed are indicated in binary digits by the indicator LED. Buttons pressed once are not counted when pressed
again.4. Press the two buttons in step 2 at the end.
Display: 1< 2< 3
Aging ModeNOTE: Perform the following procedure only when operating the unit by itself.
This mode is used for checking the operations of the CD player and tape deck.The operations are the same as the aging mode described in the service manual for the STR-VX500/VX700. However as this unitdoes not have a fluorescent indicator tube, operating states and error statuses cannot be checked.If the STR-VX500/VX700 is available, set the aging mode according to those service manuals.
Aging continues in the following sequence as long as no errors occur.
MSB ↑ ↑ LSB
Aging of CD player (12 minutes)
Aging of deck A
Aging of deck B12 minutes
7
SECTION 2GENERAL
Front Panel
Location of Parts and Controls
1 DISC SKIP/EX-CHANGE button2 DISC 1 button3 DISC 2 button4 DISC 3 button5 DISC NUMBER 1< 2< 3 indicator6N (CD play) indicator7 X (CD pause) indicator8 A OPEN/CLOSE button9 x (CD stop) button0HX (CD play pause) buttonqa bB (Deck A play) indicatorqs z (Deck B rec) indicatorqd X (Tape (Deck B pause)) indicatorqf bB (Deck B play) indicatorqgH (Deck B play) buttonqhh (Deck B play) buttonqj s (Deck B stop) buttonqk A (Deck B eject) buttonql Casette lid (Deck B)
w; DIRECTION MODE buttonwa X PAUSE buttonws z REC buttonwd HI-SPEED DUBBING buttonwf CD SYNCHRO buttonwg DOLBY NR buttonwh Casette lid (Deck A)wj A EJECT (Deck A) buttonwk s (Deck A stop) buttonwlh (Deck A play) buttone;H (Deck A play) buttonea Video CD Disc trayes RETURN buttoned PREV buttonef SELECT buttoneg NEXT buttoneh PBC OFF indicatorej VCD indicatorek PBC indicator
2 3 4 5 6 7 8 9
0
qa qs qd qf
ekejeh
qg
qh
qj
qk
w;wawswdwfwg qlwh
wj
wk
wl
e;
ea
es
eg
ed
ef
1
8
SECTION 3DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-1. LOADING PANEL
3-2. BACK PANEL AND CD MECHANISM DECK
2 Pull-out the disc tray.
1 Turn the cam to the direction of arrow.
3 Loading panel (Remove two claws)
Two claws
1 Screw (BVTP3 × 8)
2 Cover (SC)
4 Two screws (BVTP3 × 10)
3 System cable
5 Three screws (BVTP3 × 10)
6 Four screws (BVTP3 × 8)
7 Back panel
8 Two screws (BVTP3 × 10)
0 Screw (BVTP3 × 10)
qa Flat type wire (19core, CNS103)
qs Connector (CN111)qd Connector
(CN112)
qf CD mechanism deck
9 Dummy board
9
3-3. FRONT PANEL
3-4. TC MECHANISM DECK AND CASSETTE HOLDER
1 Flat type wire (17core, CNS102)
4 Connector (CN113)
2 Flat type wire (17core, CNS104)
5 Two screws (BVTP3 × 10)
6 Lead (with connector)
7 Connector (CNP105)
Catcher
8 Front panel (Remove the catcher)
3 Flat type wire (15core, CNS101)
A
1 Three screws (BVTP2.6 × 8)
2 Two screws (BVTP2.6 × 8)
3 TC mechanism deck
4 Two springs
C
D
D
C
5 Remove the Cassette holder A and Cassette holder B. (Remove C first, and remove D.)
6 Eject button A
7 Eject button B
Note for installationSet the Spring to be at the position in the figure.
B
(Push out in the direction of the arrow A.)
(Push out in the direction of the arrow B.)
10
3-5. DISC TRAY
Note: When installing the Disc tray, pull around the flat type wire topass through the claw A and claw B , as shown in the figure.
Claw BClaw A
1 Turn the cam the direction of arrow.
2 Pull-out the disc tray.5 Remove the disc tray.
4 Two claws
3 Flat type wire (8 core)
11
Read before adjustmentsTo adjust the unit, operate the unit by itself using the conduction jig(PFJ-1).
For details on switching functions and fast forwarding the unit, etc.when operating it by itself, refer to “Connection and Operations ofthe Unit by Itself” on page 5 of Servicing Notes.
• Turning on the powerWhen operating the unit by itself:1. After turning ON the power of the conduction tool (PFJ-1),
press the s (TAPE A) button, s (TAPE B) button, and H(TAPE B) button together in this order.
Inputting/outputting audio signals:Use the jack of the power supply jig (PFJ-1).
DECK SECTION 0 dB=0.775V
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 adjusted.4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustmentshould be completed before performing recording circuitadjustment.)
6. The adjustments should be performed for both L-CH and R-CH.
7. Switches and controls should be set as follows unless otherwisespecified.
Record/Playback Head Azimuth Adjustment(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:1. Mode : Playback
Precaution1. Clean the following parts with a denatured alcohol-moistened
swab:record/playback heads pinch rollerserase head rubber beltscapstan idlers
2. Demagnetize the record/playback head with a headdemagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.4. After the adjustments, apply suitable locking compound to the
parts adjusted.5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
SECTION 4MECHANICAL ADJUSTMENTS
SECTION 5ELECTRICAL ADJUSTMENTS
Tape
P-4-A100
WS-48B
P-4-L300
Signal
10 kHz, –10 dB
3 kHz, 0 dB
315 Hz, 0 dB
Used for
Azimuth Adjustment
Tape Speed Adjustment
Level Adjustment
Mode
FWD
FWDback tension
REV
REVback tension
FF/REW
FWD tension
REV tension
Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
31 to 71 g • cm(0.43 – 0.98 oz • inch)
2 to 6 g • cm(0.02 – 0.08 oz • inch)
31 to 71 g • cm(0.43 – 0.98 oz • inch)
2 to 6 g • cm(0.02 – 0.08 oz • inch)
71 to 143 g • cm(0.98 – 1.99 oz • inch)
100 g or more(3.53 oz or more)
100 g or more(3.53 oz or more)
PFJ-1
Output point
Input point
set
test tapeP-4-A100
(10kHz, -10dB)
PFJ-1
level meter
output point
12
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 1 dB of peak.
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to theparts adjusted.
Adjustment Location: Playback Head (Deck A)Record/Playback/Erase Head (Deck B)
L-CHpeak
R-CHpeak
screwposition
outputlevel within
1 dB
L-CHpeak
R-CHpeak
screwposition
within 1dB
Waveform of oscilloscope
in phase 45° 90° 135° 180°
good wrong
set PFJ-1
oscilloscope
test tapeP-4-A100
(10kHz, -10dB) output point
Tape Speed Adjustment (Deck B)
Note: Set the test mode using the following method and begin tapespeed adjustment.In the test mode, the speed will switch to double speed ornormal speed each time the HI-DUB button is pressed.
Procedure:Press the x (CD) button while pressing the DIRECTION MODEbutton.
1. Insert the WS-48B into deck B, while pressing the x (CD)button, press the h (TAPE A) button, set the function to“deck B”.
2. Press the H button of deck B.3. Press the HI-DUB button and play the tape at double speed.4. Adjust RV1001 of the LEAF SW board so that the reading of
the frequency counter becomes 6000 ± 180 Hz.5. Press the HI-DUB button and play the tape at normal speed.6. Adjust RV1002 of the LEAF SW board so that the reading of
the frequency counter becomes 3000 ± 90 Hz.
Adjustment Location: LEAF SW board
Sample Value of Wow and flutterW.RMS (JIS) less than 0.3%(test tape: WS-48B)
Playback Level Adjustment (Deck A, Deck B)Procedure:Mode: Playback
Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301(L-CH) and RV401 (R-CH)so that adjustment within the following adjustment level.
Adjustment level:Output point from PFJ-1 playback level: 301.5 to 338.3 mV (–8.2to –7.2 dB)level difference between the channels: within ± 0.5 dBAdjustment Location: AUDIO board
Forward
Reverse
set
test tapeP-4-L300
(315Hz, 0dB)
PFJ-1
level meter
output point
RV1002 RV1001
RV1002(Normal Speed)RV1001(High Speed)
Adjustment Location[LEAF SW BOARD]
13
Record Level Adjustment (Deck B)
Procedure:
1. Press the x (CD) button while pressing the DIRECTIONMODE button.
2. While pressing the x (CD) button, press the h (TAPE A)button, set the function to “deck B”.
3. Insert a tape into deck B, press the z REC button, and thenpress the N button to start recording.
4. Mode: Record
5. Mode: Playback
6. Confirm playback the signal recorded in step 2 becomeadjustment level as follows.If these levels do not adjustment level, adjust the RV301 (L-CH) and RV351 (R-CH) on the MAIN board to repeat steps 3and 4.
Adjustment level:Output point from PFJ-1 playback level: 47.2 to 53.0 mV (–24.3 to–23.3 dB)
Adjustment Location: MAIN board
Record Bias Adjustment (Deck B)
Procedure:
1. Press the x (CD) button while pressing the DIRECTIONMODE button.
2. While pressing the x (CD) button, press the h (TAPE A)button, set the function to “deck B”.
3. Insert a tape into deck B, press the z REC button, and thenpress the N button to start recording.
4. Mode: Record
5. Mode: Playback
6. Confirm playback the signal recorded in step 2 becomeadjustment level as follows.If these levels do not adjustment level, adjust the RV341 (L-CH) and RV441 (R-CH) on the AUDIO board to repeat steps 3and 4.
Adjustment level: The playback output of 10 kHz level differenceagainst 315 Hz reference should be ± 1.0 dB.
Adjustment Location: AUDIO board
AF OSC
INPUT POINT1) 315 Hz2) 10 kHz
blank tapeCS-123
PFJ-1
setattenuator
600 Ω
50 mV (–23.8 dB)
recordedposition
level meter
set
PFJ-1
outputpoint
AF OSC blank tapeCS-123
PFJ-1 setattenuator
600 Ω
INPUT POINT315Hz 50 mV (–23.8 dB)
recordedposition
level meter
set
PFJ-1
outputpoint
Adjustment Location[AUDIO BOARD] (Conductor Side)
RV441 RV341
RV301(Lch),RV401(Rch)Playback Level (Deck B)
RV301 RV401
RV341(Lch),RV441(Rch)Record Bias
RV311(Lch),RV411(Rch)Playback Level (Deck A)
RV311 RV411
CNS102
CNP105
CNS101RV351Record
Level (R ch)
RV301Record
Level (L ch)
[MAIN BOARD] (Component Side)
14
CD SECTIONNotes:1. CD block basically constructed to operate without adjustment. There-
fore, check each item in order given.2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated.3. Use the oscilloscope with more than 10 MΩ impedance.4. Clean an object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
S-Curve CheckConnection:
Procedure:1. Connect the oscilloscope to TP (FE) and TP (VC) on BD board.2. Connect between test point TP (FOK) and Ground by lead wire.3. Turned power switch on.4. Put disc (YEDS-18) in and turned power switch on again and
actuate the focus search. (actuate the focus search when disctable is moving in and out.)
5. Confirm that the oscilloscope waveform (S-curve) issymmetrical between A and B. And confirm peak to peak levelwithin 3.0 ± 1.0 Vp-p.
S-curve waveform
6. After check, remove the lead wire connected in step 2.Note: • Try to measure several times to make sure that the ratio of A : B
or B : A is more than 10 : 7.• Take sweep time as long as possible and light up the brightness
to obtain best waveform.
RF Level CheckConnection:
Procedure:1. Connect the oscilloscope to TP (RF) and TP (VC) on BD board.2. Turned power switch on.3. Put disc (YEDS-18) in and press the G button.4. Confirm that the oscilloscope waveform is clear and check RF
signal level is correct or not.Note: Clear RF signal waveform means that the shape “≈” can be clearly
distinguished at the center of the waveform.
within 3.0 ± 1.0 Vp-p
RF signal waveform
When observing the eye pattern, set the oscilloscope for AC rangeand raise vertical sensitivity.
When a general remote commander is not used (1 Track JumpCheck):Procedure:1. Connect the oscilloscope to TP (TE) and TP (VC) on BD board.2. Turned power switch on.3. Put disc (YEDS-18) in and press the G button, and play the
number five track.4. Press the G button. (Becomes the 1 track jump mode)5. Confirm that the level B of the oscilloscope's waveform and
the A (DC voltage) of the center of the traverse waveform.Confirm the following:
1 track jump waveform
Connection Location:[BD Board] (Side A)
A – B2 (A + B)
× 100 = ± 7 (%)
level: 1.3 ± 0.6 Vp-p
+–
BD board
TP (FE)TP (VC)
oscilloscope
A
B
symmetry
+–
BD board
TP (RF)TP (VC)
oscilloscope(AC range)
VOLT/DIV: 200 mVTIME/DIV: 500 ns(with the 10: 1 probe in use)
level: 1.3 Vp-p+0.25–0.20
Center of the waveform
B
symmetry
A (DC voltage)0V
CN102
CN
101
IC103IC101
TP(FOK)
TP(TE)
TP(FE)
TP (RF)TP (VC)
HTC-VX500
1515
VIDEO SECTION
Frequency AdjustmentConnection:
Procedure:1. Connect the frequency counter to TP508 (27 MHz) on VIDEO
board.2. Turned power switch on.3. Press the FUNCTION button to select the CD.4. Adjust CT503 on the VIDEO board so that the frequency
counter reading 27.0 MHz ± 80 Hz at stop status.
Adjustment Location:[VIDEO BOARD] (Side A)
+–
TP508 (27 MHz)
VIDEO boardfrequency counter
IC505
IC507
TP508(27 MHz)
CT503VIDEO
FrequencyAdjustment
SECTION 6DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
MAIN board
REG board
VIDEO IN/OUT board
VIDEO board
TC (A) board
TC LED board
TC (B) board
TC PANEL board
CD PANEL board
AUDIO board
LEAF SW board
SENSOR board
CONNECTOR board
BD board
MOTOR (SLIDE) board
MOTOR (TURN) board
HTC-VX500
1616
6-2. BLOCK DIAGRAMSSERVO SECTION
CD MECHANISMCONTROLLER
IC502 (1/2)
A/DCONVERTER
OUT+
OUT–
34
7
2
1
5
10
6
4
5
6
16
15
14
13
8
9
19
21
7778
71
5554454746
6320
31 33 34 32
36
38
39
26
93
2728 29
80
88
89
100
2
4
6
8
10
9
10
4
5
19
20
13
12
27
26 23, 2
4
A
E
B
C
D
A
A+5V
F
DETECTOR
A
B
C
D
RFSUMMING
AMP
FOCUSERROR AMP
RF EQSWITCH
Q102, 103
RF EQAMP
TRACKINGERROR AMP
RFO
17RFE
FE
FE BIAS
RF AMP,FOCUS/TRACKING ERROR AMP
IC103
TEE
FF I-V AMP
E I-V AMP
AUTOMATICPOWER
CONTROLQ101
OPTICALTRANSCEIVER
IC107
CD OPTICALDIGITAL OUT
APC LDAMP
APC PDAMP
LD
LDPD
LASER DIODE
RFACMIX
ASYO
ASYI
CTL1
CTL2
FILTER
FILO PC
O
CLTV FILI
DIGITAL PLL
ASYMMETRYCORRECTOR
EFMDEMODULATOR REGISTER
DIGITAL SIGNAL PROCESSORIC101 (1/2)(BD BOARD)
MON
MDP
MDS
94 95 96 97
FSW
CLVPROCESSOR
18-TIMESOVERSAMPLING
FILTERNOISE
SHAPER
INTE
RNAL
BUS
32KRAM ER
ROR
CORR
ECTO
R
SUBQ
SQCK
83
SCLK
79
MUT
E
76
EXCK
SUBCODE QPROCESSOR
SUBCODE P – WPROCESSOR
SYNCPROTECTOR
TIMINGGENERATOR 1
TIMINGGENERATOR 2
DATA DATABCK
LRCK
64XTSL
VCKI
XTAO
62
XTAI
BCLKLRCK
RFCKGFS
56C2PO C2PO
CTL1
DOUTDIGITALOUT
SERI
AL/P
ARAL
LEL
PROC
ESSO
R
D/A
DIGI
TAL
PROC
ESSO
R
CLOCKGENERATOR
ADDRESSGENERATOR
PRIORITYENCODER
PEAKDETECTOR
74
SCOR
73
WFC
K
75
SBSO
18
28
SENS
E CL
K
1
SENS
E
53
DSP
CLK
DSP
DATA
4
DSP
LATC
H
81
SE TE FERF
DCFO
CUS/
TRAC
KING
/SLE
DSE
RVO
DSP
FOCU
S/TR
ACKI
NG/S
LED
PWM
GEN
ERAT
OR
SFDR
IN+
IN–
OUT+
OUT–
IN–
IN+
IN–
IN+
15MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
SSTPCOUT
S101(LIMIT)
A+5V
MIRR/DFCT/FOK
DETECTOR
SERVO AUTOSEQUENCER
SERVOINTERFACE
CPUINTERFACE
CLOK86
DATA
87
99
XLAT
SENS
FOK
9192
MIRRDFCT
IN+,
IN–
OUT+
OUT–M101
(SPINDLE)MOTORDRIVE
XRST
LDON
10
DSP
MUT
E
MOTORDRIVE
COILDRIVE
OUT–
OUT+
COILDRIVE
M
M
M102(SLED)
16
FOCUS/TRACKING COIL DRIVE,SPINDLE/SLED MOTOR DRIVE
For printed wiring boards.Note:• X : parts extracted from the component side.• p : parts mounted on the conductor side.• ® : Through hole.• b : Pattern from the side which enables seeing.(The other layers' patterns are not indicated.)
• AbbreviationHK : Hong Kong modelSP : Singapore modelMY : Malaysia modelEA : Saudi Arabia modelTH : Thai modelIA : Indonesia model
• U : B+ Line.• V : B– Line.• H : adjustment for repair.• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.• 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 : FMf : AME : PB (DECK A)d : PB (DECK B)G : REC (DECK B)J : CD (AUDIO)L : CD (VIDEO)c : DIGITAL OUT
• Indication of transistor
Q
C
These are omitted
EB
RESETIC101
11
10
X1015MHz
15
16
65
6772547069
CD-PLAY
D224-230
DISC1DISC2DISC3EXIST1EXIST2EXIST3
LEDON/OFFSWITCH
Q214-223
57 XRST
46 CD-POWER 5556
IIC DATAIIC CLK
RESET
X1
X2
MASTER CONTROLIC101
DECO1DECO2CD-PAUSE
CD-L
CD-POWER
IIC-DATAIIC-CLK
RESET
PB L
REC L
52
(Page 17)
(Page 17)
(Page 17)
(Page 17)
KEYMATRIX
53
• R CH: Same as L ch• SIGNAL PATH : CD : PB : REC
68
66 LED1 LED2 LED3 LED4 LED5 LED6
2345
7
KEY B KEY A
3029
6
D201-206
LEDON/OFFSWITCH
Q201-206
+7.5V REGQ852
+12V REGIC8513 1
+5V SWQ102-104
-7.5V REGQ855
+5V REGIC8543 1
+
-
+7V REGIC8533
A+7.5V
D+5V
A+5V
M12V
+5V
M+7V
A-7.5V
1 17
13
(CD R)R CH
(PB R)R CH
(REC R)R CH
CNB1082
3
9
7
6
4
1416
RECTD901-904
SYSTEMCONTROL
+5V REGIC8523 1
J
D
F
E
(Page 18) G(Page 18) H
CThese are omitted
EB
Note: The components identified by mark ! or dotted linewith mark ! are critical for safety.Replace only with part number specified.
HTC-VX500
2020
6-3. PRINTED WIRING BOARD CD SECTION • Refer to page 15 for Circuit Boards Location.
16
(Page 32)BA F
Ref. No. Location
IC101 E-4IC102 C-10IC103 E-2IC104 F-9
Q101 E-12Q102 C-2Q103 C-2
• SemiconductorLocation
HTC-VX500
2121
6-4. SCHEMATIC DIAGRAM CD SECTION • Refer to page 35 for Waveforms.• Refer to page 38, 39 for IC Block Diagrams.
(Page 33)
N
16
The components identified by mark ! or dottedline with mark ! are critical for safety.Replace only with part number specified.
HTC-VX500
2222
6-5. SCHEMATIC DIAGRAM DECK SECTION • Refer to page 39 for IC Block Diagrams.
16
MAIN BOARDCNS101
(Page 25)
The components identified by mark ! or dottedline with mark ! are critical for safety.Replace only with part number specified.
HTC-VX500
2323
6-6. PRINTED WIRING BOARD DECK SECTION • Refer to page 15 for Circuit Boards Location.
16
MAIN BOARDCNS101
(Page 24)
HTC-VX500
2424
6-7. PRINTED WIRING BOARD MAIN SECTION • Refer to page 15 for Circuit Boards Location.
• Refer to page 42 for IC Pin Function Description.• Refer to page 35 to 37 for Waveforms.
HTC-VX500
3434
6-18. SCHEMATIC DIAGRAM VIDEO (2/2) SECTION
2.6
UDZ-TE-17-3.9B
• Refer to page 32 for Printed Wiring Board. • Refer to page 35 to 37 for Waveforms.• Refer to page 39 for IC Block Diagrams. • Refer to page 44 for IC Pin Function Description.
IC101 8-759-701-39 IC NJM2100M(TE2)IC401 8-759-262-00 IC MC14576CFELIC402 8-759-564-64 IC M38513M4-C50FP-TPIC501 8-759-269-92 IC SN74HCU04ANSRIC502 8-759-582-84 IC M30620MC-313FP
IC504 8-759-269-92 IC SN74HCU04ANSRIC505 8-759-535-48 IC CL680T-D1IC506 8-759-573-23 IC LC372100PM-J48-TLAIC507 8-759-342-01 IC MB814260-70PJEQIC509 8-759-535-62 IC PCM1727E-2/T2
< JACK >
J301 1-537-943-11 TERMINAL, S (S VIDEO OUT)
< JUMPER RESISTOR >
JW101 1-216-295-91 SHORT 0JW201 1-216-295-91 SHORT 0JW401 1-216-295-91 SHORT 0JW402 1-216-295-91 SHORT 0JW403 1-216-295-91 SHORT 0
JW404 1-216-295-91 SHORT 0JW405 1-216-295-91 SHORT 0JW413 1-216-295-91 SHORT 0JW502 1-216-295-91 SHORT 0JW503 1-216-295-91 SHORT 0
JW504 1-216-295-91 SHORT 0JW505 1-216-295-91 SHORT 0
< COIL >
L301 1-410-372-21 INDUCTOR CHIP 1.8uHL302 1-410-372-21 INDUCTOR CHIP 1.8uHL501 1-216-296-91 SHORT 0L502 1-216-296-91 SHORT 0L503 1-216-296-91 SHORT 0
L504 1-410-375-11 INDUCTOR CHIP 3.3uHL505 1-216-296-91 SHORT 0L506 1-216-296-91 SHORT 0L507 1-216-296-91 SHORT 0L508 1-216-296-91 SHORT 0
L509 1-216-296-91 SHORT 0L510 1-216-296-91 SHORT 0
VIDEO
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks