CFD-G55 · Sony Corporation Personal Audio Company Published by Sony Engineering Corporation 9-873-639-01 2002C1600-1 ... Laser output: Less than 44.6 µW (This output is the value
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CFD-G55US Model
Canadian ModelE Model
SERVICE MANUAL
CD RADIO CASSETTE-CORDERSony CorporationPersonal Audio Company
AUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTALHARMONIC DISTORTIONWith 3.2-ohm loads, both channels drivenfrom 1 000 - 10 000 Hz; rated 3 W perchannel-minimum RMS power, with nomore than 10 % total harmonic distortionin AC operation.Woofer with 4-ohm loads, driven at50 - 150 Hz; rated 6 W minimum RMSpower, with no more 10 % total harmonicdistortion in AC operation.
Other specificationsCD player sectionSystem
Compact disc digital audio systemLaser diode properties
Material: GaAlAsWave length: 780 nmEmission duration: ContinuousLaser output: Less than 44.6 µW(This output is the value measured at a distanceof about 200 mm from the objective lens surfaceon the optical pick-up block with 7 mmaperture.)
Spindle speed200 r/min (rpm) to 500 r/min (rpm)(CLV)
Number of channels2
Frequency response20 - 20 000 Hz +1/–2 dB
Wow and flutterBelow measurable limit
Radio sectionFrequency range
FM: 87.5 - 108 MHzAM: 530 - 1 710 kHz
AntennasFM: Telescopic antennaAM: Built-in ferrite bar antenna
Cassette-corder sectionRecording system
4-track 2 channel stereoFast winding time
Approx. 115 s (sec.) with Sony cassette C-60Frequency response
TYPE I (normal): 70 - 13 000 Hz
GeneralSpeaker
Full range: 10 cm (4 in.) dia., 3.2 Ω, cone type(2)Woofer: 8 cm (3 1⁄4 in.) dia., 4 Ω, cone type (1)
OutputsHeadphones jack (stereo minijack)For 16 - 68 Ω impedance headphones
Power output4 W + 4 W (at 3.2 Ω, 10% harmonic distortionin DC operation)Woofer:12 W (at 4 Ω, 10 % harmonic distortion in DCoperation)
Power requirementsFor CD radio cassette-corder:120V AC, 60 Hz12 V DC, 8 size D (R20) batteriesFor remote control:3 V DC, 2 size AA (R6) batteries
MassApprox. 6.8 kg (14 lb. 16 oz) (incl. batteries)
Supplied accessoryAC power cord (1)Remote control (1)
Design and specifications are subject to changewithout notice.
2
CFD-G55
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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITHMARK 0 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.
ATTENTION AU COMPOSANT AYANT RAPPORTÀ LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LESDIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONTCRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NEREMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONYDONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OUDANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
TABLE OF CONTENTS1. SERVICING NOTES ······················································ 3
2. GENERAL ·········································································· 4
3. DISASSEMBLY ································································ 53-1. Cabinet (Front) Assy- 1 ················································· 53-2. Cabinet (Front) Assy- 2 ················································· 63-3. CONTROL (POWER), CONTROL (CD),
7. ELECTRICAL PARTS LIST ······································· 44
3
SAFETY CHECK-OUT
After correcting the original service problem, perform thefollowing safety checks before releasing the set to the customer:Check the antenna terminals, metal trim, “metallized” knobs, screws,and all other exposed metal parts for AC leakage. Check leakage asdescribed below.
LEAKAGE
The AC leakage from any exposed metal part to earth groundand from all exposed metal parts to any exposed metal part havinga return to chassis, must not exceed 0.5 mA (500 microamperes).Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCAWT-540A. Follow the manufacturers’ instructions to use theseinstruments.
2. A battery-operated AC milliammeter. The Data Precision 245digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of aVOM or battery-operated AC voltmeter. The “limit” indicationis 0.75 V, so analog meters must have an accurate low-voltagescale. The Simpson 250 and Sanwa SH-63Trd are examples ofa passive VOM that is suitable. Nearly all battery operateddigital multimeters that have a 2V AC range are suitable. (SeeFig. A)
To Exposed Metal Parts on Set
0.15 µF 1.5 kΩACVoltmeter(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
CFD-G55SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostaticbreakdown because of the potential difference generated by thecharged electrostatic load, etc. on clothing and the human body.During repair, pay attention to electrostatic breakdown and also usethe procedure in the printed matter which is included in the repairparts.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 more than 30 cm away from the objective lens.
CHUCK PLATE JIG ON REPAIRINGOn repairing CD section, playing a disc without the CD lid, useChuck Plate Jig.• Code number of Chuck Plate Jig : X-4918-255-1
LASER DIODE AND FOCUS SEARCH OPERATIONCHECK1. Press CD open knob.2. Open the lid for CD.3. Push on SWITCH (S801) as following figure.4. Confirm the laser diode emission while observing the objecting
lens. When there is no emission, Auto Power Control circuit orOptical Pick-up is broken.Objective lens moves up and down once for the focus search.
Insert a precision screw driver and push SWITCH (S801)
4
CFD-G55SECTION 2GENERAL This section is extracted
from instruction manual.
Remote Control
Location of controls
FUNCTION
BAND
POWER
VOL +*, –
x
.,>
Z PUSHOPEN/CLOSE
VOLUME –, +*
TUNE –, +
DISPLAYENTERMEMORY
MODE
i
Number buttons
x
u*
POWER
LINE
OPR/BATT
Loading a CD
With the labeled side up
Inserting a cassette
With the side you want toplay facing upward
BANDAUTO PRESET
SOUND
Display
Remote sensor
Total track number Programmed track Playing orderD E
Total playing time
Display
*The button has a tactile dot.
POWER DRIVEWOOFER
., >PRESET –, +
N
X
SLEEP
MODE
TUNE+, –
WOOFERSOUND
SLEEP
LINE IN(rear)
About CD-Rs/CD-RWsThis player can play CD-Rs/CD-RWsrecorded in the CD-DA format*, butplayback capability may vary depending onthe quality of the disc and the condition ofthe recording device.
* CD-DA is the abbreviation for CompactDisc Digital Audio. It is a recordingstandard used for Audio CDs.
*
5
CFD-G55SECTION 3
DISASSEMBLY
• The equipment can be removed using the following procedure.
3-1. Cabinet (Front) Assy- 1
Note : Follow the disassembly procedure in the numerical order given.
CABINET (FRONT) ASSY-1(page 5)
CABINET (FRONT) ASSY-2(page 6)
PANEL ASSY(page 7)
LCD BOARD, PANEL (UPPER)(page 7)
CONTROL (POWER), CONTROL (CD), HEADPHONE BOARD(page 6)
PANEL (UPPER) ASSY-1(page 8)
PANEL (UPPER) ASSY-2(page 8)
POWER, TRANS BOARD(page 9)
TUNER BOARD, DUCT (UPPER, LOWER)(page 9)
BATT COM, BATT BOARD(page 10)
MAIN BOARD-1(page 10)
MAIN BOARD-2(page 11)
PDW, L-R/REG BOARD(page 12)
MECHANISM DECK SECTION (MF-V5-117)(page 11)
CD BLOCK SECTION (KSM-213RDP)(page 12)
Set
2 two screws +BVTP 3 × 20
3 eight screws +BVTP 3 × 14
5 screw +BVTP 3 × 10
4 Open the CD lid in the direction of the arrow.
1 Remove the battery case lid in the direction of the arrow.
detail view
6
CFD-G55
3-3. CONTROL (POWER) , CONTROL (CD) , HEADPHONE Board
3-2. Cabinet (Front) Assy- 2
1 Remove the cabinet (front) assy in the direction of the arrow.
4 CNP391 (from PWD board KH353)
5 CNP393 (from L-R/REG board KH374)
3 flexible flat cable (from MAIN board CNP801)
2 flexible flat cable (from MAIN board CNP804)
MAIN board
HEADPHONE board
1 two screws +BVTP 2.6 × 10
3 screw +BVTP 3 × 10
5 two screws +BVTP 2.6 × 10
6 CONTROL (CD) board, CD button
4 HEADPHONE board
2 CONTROL (POWER) board, power button
7
CFD-G55
3-4. Panel Assy
3-5. LCD Board, Panel (Upper)
5 panel assy
2 four screws +BVTP 2.6 × 10
1 screw +BVTP 3 × 10
4 flexible flat cable (from MAIN board CNP801)
3 flexible flat cable (from MAIN board CNP804)
!™ upper Panel
7 two screws +BVTP 2.6 × 10
5 PDW button
8 two screws +BVTP 2.6 × 10
3 flexible flat cable (from MAIN board CNP804)
2 VOL CONTROL board
0 flexible flat cable (from MAIN board CNP801)
1 six screws +BVTP 2.6 ×10
9 front panel section
!¡ LCD board
6 light guide plate (PWD)
4 VOL button
8
CFD-G55
3-6. Panel (Upper) Assy- 1
3-7. Panel (Upper) Assy- 2
7 Open the cassette holder assy in the direction of the arrow.
5 Open the CD lid in the direction of the arrow.
1 CNP1 (from MAIN board KH801)
2 CNP903 (from MAIN board KH301)
6 Push STOP/EJECT button.
3 Remove two harnesses in the direction of the arrow.
4 Remove two harnesses in the direction of the arrow.
4 Remove the panel (upper) assy in the direction of the arrow.
2 five screws +BVTP 3 × 10
5 handle
1 four screws +BVTP 3 × 10
3 Move the telescopic antenna in the direction of the arrow.
9
CFD-G55
3-8. POWER, TRANS Board
3-9. TUNER Board, Duct (Upper, Lower)
5 four screws +BVTP 3 × 10
3 screw +BVTP 3 × 10
2 Remove harnesses in the direction of the arrow.
7 trans chassis
4 two screws +BVTP 3 × 10
power transformer (T901)
1 CNP902 (from BATT board KH951)
6 five screws +BVTP 3 × 10
8 POWER board, TRANS board
2 two screws +BVTP 3 × 107 two screws
+BVTP 3 × 10
0 upper duct
9 lower duct
1 screw +BVTP 3 × 10
4 TUNER board
8 seven screws +BVTP 2.6 × 8
6 woofer bracket
3 chassis (TU)5 screw +BVTP 3 × 10
10
CFD-G55
3-10. BATT COM, BATT Board
3-11. MAIN Board- 1
1 CNP902 (from BATT board KH951)
5 screw 3 × 8 (DIA, 10),+WH
6 BATT COM board
9 battery terminal
8 battery terminal
4 BATT board
7 four screws +BVTP 3 × 103 screw
3 × 8 (DIA, 10),+WH
2 Remove harnesses in the direction of the arrow.
BATT board
9 four screws +BVTP 3 × 10
3 CD door sw (S801)
4 CNP351
qsMAIN board
!¡ hook
8 CNP371
7 CNP372
6 CNP373
5 CNP352
0 CNP302
1 flexible flat cable CNP805
2 flexible flat cable CNP802
L-R/REG board
PDW board
qs
11
CFD-G55
3-12. MAIN Board- 2
3-13. Mechanism Deck Section (MF-V5-117)
5 MAIN board
CNP374
CNP353
chassis (CD)
L-R/REG board
1 from TUNER board CNP1
2 from HEADPHONE board CNP391
3 from HEADPHONE board CNP393
4 from POWER board CNP903
PDW board
4 three screws +BVTP 3 × 10
1 flexible flat cable (from MAIN board CNP805)
5 mechanism deck section (MF-V5-117)
3 TC board
2 screw +PTT 2 × 6
12
CFD-G55
3-14. CD Block Section (KSM-213RDP)
3-15. PDW, L-R/REG Board1 screw +BVTP 3 × 10
3 two screws +BVTP 3 × 10
4 L-R/REG board, chassis (HS, L)
2 clamp
5 three screws +BVTP 3 × 10
6 PDW board, Chassis (HS, R)
4 CD board
3 flexible flat cable CNP701
2 Remove solderings from the four points. 1 flexible flat cable
(from MAIN board CNP802)
6 CD block section (KSM-213RDP)
5 four screws +PWH 2.6 × 10
13
CFD-G55
4-1. Mechanical Adjustments
PRECAUTION1. Clean the following parts with a denatured-alcohol-moistened
swab :record/playback head pinch rollererase head rubber beltscapstan
2. Demagnetize the record/playback head with a head demagne-tizer. (Do not bring the head demagnetizer close to the erasehead.)
3. Do not use a magnetized screwdriver for the adjustments.4. The adjustments should be performed with the rated power
supply voltage (12V) unless otherwise noted.
Torque MeasurementTorque Torque Meter Meter Reading
1.77 – 5.88 mN•mForward CQ-102C (18 – 60 g•cm)
(0.25 – 0.83 oz•inch)
Forward0.1 – 0.49 mN•m
Back TensionCQ-102C (1.0 – 5.0 g•cm)
(0.014 – 0.069 oz•inch)4.42 – 9.31 mN•m
Fast Forward CQ-201B (45 – 95 g•cm)(0.62 – 1.32 oz•inch)
4.42 – 9.31 mN•mRewind CQ-201B (45 – 95 g•cm)
(0.62 – 1.32 oz•inch)
Tape Tension MeasurementTorque Meter Meter Reading
CQ-403Amore than 60g
(more than 2.12 oz)
SECTION 4ADJUSTMENTS
4-2. Electrical Adjustments
TAPE SECTIONStandard Output Level
Output terminal HP OUT
load impedance 32 Ωoutput signal level 0.25V (–10dB)
Test TapeType Signal Used for
WS-48A 3kHz, 0dB Tape Speed Adjustment
Tape Speed AdjustmentProcedure :
Mode : Playback
Adjustment so than the value on the digital frequency counter is3,000 Hz.
Adjustment Value : 3,000HzStandard Value : 2,940 - 3,060Hz
Frequency difference between the beginning and the end of the tapeshould be within 1.5% (45Hz).
set
test tapeWS-48A(3kHz, 0dB) 32Ω
digital frequencycounter
J391 ( i )
Tape speed adjustment control inside motor
0dB = 0.775V
Adjustment Location : Mechanism deck
14
CFD-G55
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.T1 450 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display 530 kHz 1,710 kHz
Reading on Digital voltmeter 1.0 ± 0.1 V 5.3 ± 0.8V
Adjustment Part L 4 <confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.L3 CT3
620 kHz 1,400 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.T2 10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display 87.5 MHz 108 MHzReading on Digital voltmeter 1.3 ± 0.4 V 3.0 ± 0.3 VAdjustment Part <confirmation> L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.L1 CT1
87.5 MHz 108 MHz
Adjustment Location : TUNER board (See page 16)
• Repeat the procedures in each adjustment several times, and thefrequency coverage and tracking adjustments should be finallydone by the trimmer capacitors.
TUNER SECTION
AM SectionFunction switch : AM
FM SectionFunction switch : FM
• Connecting Level Meter (FM and AM)
• Connecting Digital Voltmeter (FM and AM)
AM RF signalgenerator
30% amplitude modulation by 400Hzsignal.Output level : as low as possible
Put the lead-wireantenna close to the set.
FM RF signalgenerator
33.75kHz frequency deviation by 1kHz signal.Output level : as low as possible
telescopicantennaterminal
0.01µF
0dB = 1 µV
digitalvoltmeter
100 kΩTP CV
J391 ( i )
set
32 Ω
level meter(range: 0.5–5 V ac)
15
CFD-G55
Focus Bias Check1. Connect an oscilloscope between TP RF and TP VREF on
CD board.2. Insert the test disc (YEDS-18).3. Set the CD test mode.4. Press the u button three times (LPC ON).5. Confirm that the 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.
6. Press the u button.(LPC OFF)7. Perform confirmation in step 4 again.
CD Test Mode• How to put the set into CD test mode1. Press the POWER button to turn the power on.2. Insert the test disc (YEDS-18). (Part No. : 3-702-101-01)
(Function is set to CD.)3. Set the CD test mode by momentary shorting both sides of
TEST- 1 on MAIN board.4. Press the x button two times. The set is set to the CD test
mode.(The message 80 is displayed.)
• How to release the CD test modeTurn the power off.
[MAIN BOARD] (Conductor side)
Traverse Waveform Check1. Connect an oscilloscope between TP TE and TP VREF on
CD board.2. Set the CD test mode.3. Press the u botton to play the test disc (YEDS-18).4. Confirm that the center of the traverse waveform will be at 0V.5. Confirm that the peak-to-peak voltage value of the traverse
waveform meets the specification.6. Release the CD test mode.
• Traverse waveform
A (DC voltage)
symmetry
0V
A = 0 ± 220 mVB = 0.95 ± 0.55 Vp-p
B
VOLT/DIV : 200mVTIME/DIV : 1 ms
IC803
IC802
IC805IC321
IC801
TEST-1
[CD BOARD] (Conductor side)
IC701
TP VREF TP TE TP RF
16
CFD-G55
Adjustment Location :
CT1: FM Tracking Adjustment
L1: FM Tracking Adjustment
L3: AM Tracking Adjustment
CT3: AM Tracking Adjustment
CNP1
L4: AM Frequency Coverage Adjustment
T1: AM IF Adjustment
T2: FM IF Adjustment
L2: FM Frequency Coverage Adjustment
[TUNER BOARD] (Component side)
IC1IC2
TP CVAM/FM Frequency Coverage Adjustment
(Conductor side)
1717
CFD-G55
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.• C : panel designation.
• A : B+ Line.• H : adjustment for repair.• Total current is measured with no cassette installed.• Power voltage is dc 12 V and fed with regulated dc power
supply from battery terminal.• 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 : PBa : RECJ : CDd : LINE IN
• AbbreviationCND : Canadian model.MY : Malaysia model.SP : Singapore model.E92 : Chilean and Peruvian model.MX : Mexican model.
• WAVEFORMS
– TUNER Section –
SECTION 5DIAGRAMS
5-1. Circuit Boards Location Note on Printed Wiring Boards:• X : parts extracted from the component side.• f : internal component.• : Pattern from the side which enables seeing.(The other layers' patterns are not indicated.)
1 IC2 w; (XOUT)
1.4 Vp-p13.3 µs
500 mV/DIV, 4 µs/DIV
– TC Section –
2 Q301 collector (TAPE REC)
3.1 Vp-p18 µs
1 V/DIV, 10 µs/DIV
– CD Section –
3 IC701 rk (XOUT)
4.2 Vp-p59 ns
1 V/DIV, 20 ns/DIV
– MAIN Section –
4 IC801 ua (XT2)
3.6 Vp-p30.5 µs
1 V/DIV, 10 µs/DIV
5 IC801 ug (X2)
3.7 Vp-p238 ns
1 V/DIV, 100 ns/DIV
Note:The components identi-fied by mark 0 or dottedline with mark 0 are criti-cal for safety.Replace only with partnumber specified.
Note:Les composants identifiés parune marque 0 sont critiquespour la sécurité.Ne les remplacer que par unepiéce portant le numérospécifié.
BATT board
CD board
PDW board
MAIN board
L-R/REG board
TC board
TRANS board
LCD board
BATT COM board
POWER board
TUNER board
HEADPHONE board
CONTROL (CD) board
CONTROL (POWER) board
CONTROL (VOL) board
1818
CFD-G55
5-2. Block DiagramsMAIN Section
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
: PB
: REC
: LINE IN
20
B
ATUNER/CDSECTION
L OUT
L-CH
R-CH
R-CH
HEAD
R-CH
R-CH
(MAGNET)
L-CH
BIASOSC
Q301
PRE AMPIC301
24
22
5
4
1521REC TAPE
L IN
RADIO
PB AMP
26dB
LTAPE
TAPE
T301
12
MUTEQ171
AMPQ321
INVQ953
SWQ951
BASS AGCQ351
3
8STBY
POWER AMPIC371
R-CH
R-CH
J391
SPEAKER (L-CH)
SPEAKER (R-CH)
FUNCTIONSWITCH
S409-416
LED DRIVEQ810
64
V-CL
OCK
65
V-DA
TA
34
A-M
UTE
67
TAPE
39
REC
IC801(2/2)SYSTEM CONTROL
70
71
74
75
X80232.768kHz
X8014.19MHz
XT1
XT2
X1
X2
S301REC PB
REC AMP
AMPBUFFER
7dB
17LINE
51
TC-P
LAY
M+9VM321
CAPSTAN/REELMOTOR
S322MOTOR
S321PLAY
TUNER/CDSECTION
6REF
66
P-CO
N
KEY-
1
43
WP
50
KEY-
2
44
W-L
ED1
79
LED DRIVEQ809
W-L
ED2
80
S401-408
SCL
35
SDA
36
65
EEP ROMIC803
77CD
VIN11
A15
B17
SEL14
SOUND/VOLUMEIC321
SI
14
SC
13
17OUT1
AGCQ354
VDD(SW)
VDD(SW)
12
133
10
115
8
STBY
WOOFERPOWER AMP
IC351
30
WOO
FER
ON/O
FF
31
WOO
FER
1/2
LCD891LIQUID CRYSTALDISPLAY PANEL
2710SEG17SEG0
96COM3COM0
SP391
SP392
SP393WOOFER
T901
RECTD901-904
+6V REGQ954
+9V REGQ971
CD +6V REGQ972
+3.3V REGQ956
CD/RADIO +6V
CD +3.3V
VDD(SW)
CND,MY,SP
US
POWERSWITCH
Q952
23 +3.3VREG
IC802
21 RESET
IC805
µ COM VDD
D807
D8061 REMOTE
CONTROL
IC891
76RESET
49REG CHK
D893
AUDIO 6V
Q955
PB
REC
CD 3.3V
LPFQ322GAIN
CONTROL
Q323
FUNCTIONSWITCH
FUNCTIONSWITCH
KEY-
3
45
TEST-1
D401
LED DRIVEQ802
LED
CONT
78
D891
VDD(SW)
2
AU +6V
48RMC
DRY BATTERYSIZE "D"
(IEC DESIGNATION R20)8PCS, 12V
POWER AMP +12V
+9V
J381
LINE IN
POWER DRIVE WOOFER
BACK LIGHT OPR/BATT
(AC IN)
CNJ901
1919
CFD-G55
TUNER/CD Section
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
R-CE63R-CLK61R-DATA62R-COUNT60
SYSTEM CONTROLIC801(1/2)
OPTICAL PICK-UPBLOCK
A
B
C
D
E
F
LD
VC
VCC
GND
PD
VR
LDDRIVE
FOCUSCOIL
TRACKINGCOIL
Q701
RF AMP,D/A CONVIC701
VREF11
FIN28
FIN17
TIN19
TIN210
LD80
PD79
MOTOR/COIL DRIVEIC702
F+17
F-18
T+12
T-11
SL+26
SL-27
MM702SLED
MOTOR
SP+2
SP-1
MM701
SPINDLEMOTOR
F+
F-
T+
T-
19
9
25
3 SPDO22
SLDO23
TDO20
FDO21
42L OUT
45R OUT
63DI
MAINSECTION
R-CH
L OUT
62CL
61CE
4DRF
31FSEQ
65WRQ
66RES
72CONT1
49XIN
48XOUT
S701LIMITIN SW
X70116.93MHz
C-DI54
C-CLK55
C-CE56
C-DRF58
WRQ52
C-RES59 40C-DOOR
S801
19
L1
L3FERRITE-ROD
ANTENNA
D1
2
24
21
22
20
FMMIX
FM RF I
FM RF O
FM OSC
AM RF
AM OSC
FMOSC
AMMIX
AMOSC
OSC
4MIX OUT
16
IFBUFFER
CF2
CF4
7
6
FM IF
AM IF
FMMPX
FM/AMBUFFER
FMDET
AMDET
15 AMPX
17
MUTE 12
11 R-CH
10
FRONT-ENDIF AMP,DET,FM MPX
23 5
RADIO 6V
QUAD VCC1 VCC2
MAINSECTION
T2
CE
12
11
14
13
14 13
MO/
ST
BAND
10
4
2
3
1
20
19
VDD(SW)
PLLIC2
FM
AM
VDD
XO
XI
CL
DI
DO
IF IN
MO/ST
6V
X175kHz
L-CHRADIO 6V
CT1
L2
D2
RADIO 6V
CT3
RADIO 6V
D3
L4
ANTENNA
FMTELESCOPIC IC1
T1
18 LP OUT
16 PD
LPF
18
ST IN
D
8ST IND
7BAND
IFOUT
MPX
R-MUTE57
C-FSEQ46
SP IN
SL IN
T IN
F IN
B
RADIO 6V
ANT1
64DO C-DO53
7 CONT425MUTE
17 LP IN
L1, CT1
FMTRACKING
L2
FMFREQUENCYCOVERAGE
L3, CT3
AMTRACKING
L4
AMFREQUENCYCOVERAGE
T1AM IF
T2FM IF
Z PUSHOPEN/CLOSE
2020
CFD-G55
5-3. Printed Wiring Board – TUNER Section – • See page 17 for Circuit Boards Location.
IC1 IC2
25
25 Ref. No. Location
D1 B-2D2 B-3D3 B-3D10 B-1D11 B-1
IC1 A-2IC2 A-4
• SemiconductorLocation (MY, SP)
2121
CFD-G55
5-4. Schematic Diagram – TUNER Section – • See page 34 for IC Block Diagrams. • See page 17 for Waveforms.
2222
CFD-G55
5-5. Printed Wiring Board – CD Section – • See page 17 for Circuit Boards Location.
IC702
IC701
(LIMIT IN)
25
2323
CFD-G55
5-6. Schematic Diagram – CD Section – • See page 34, 35 for IC Block Diagrams. • See page 17 for Waveforms.
2424
CFD-G55
5-7. Printed Wiring Board – TC Section –• See page 17 for Circuit Boards Location.
5-8. Schematic Diagram – TC Section –
IC301
(MAGNET)
25
• See page 35 for IC Block Diagrams.• See page 17 for Waveforms.
2525
CFD-G55
5-9. Printed Wiring Board – MAIN Section – • See page 17 for Circuit Boards Location.
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
HE301
HRP301
151
152
153
154
155 156
157
158
159
160
170
161
162
163 164
165
166
167
168169
mechanism deck section-2(MF-V5-117)
151 3-933-010-01 SPRING (S/P), TORSION152 3-933-025-01 SPRING (P), TORSION153 3-040-857-01 LEVER (P)154 3-933-024-01 ROLLER, PINCH155 3-933-019-01 SPRING (F/R), TORSION
156 3-933-028-01 SPRING (FWD), TORSION157 3-933-016-01 GEAR (S REEL)158 3-008-590-01 SLIDER (REC)159 3-008-592-23 BASE (H), HEAD
* 206 3-932-999-01 SLIDER (SW)207 3-932-998-01 SPRING (GROUND), TORSION208 3-009-648-01 LEVER (S.OFF)209 3-936-438-01 LEVER (K)210 X-3373-572-1 REEL ASSY (N), T
255 2-169-388-01 TAPPING (M2), +PWBThe components identified bymark 0 or dotted line with mark0 are critical for safety.Replace only with part numberspecified.
Les composants identifiés parune marque 0 sont critiquespour la sécurité.Ne les remplacer que par unepièce portant le numéro spécifié.
256 3-713-786-51 SCREW +P 2X3258 X-2646-381-1 CHASSIS ASSY, MOTOR (MB) (SPINDLE)259 2-626-908-01 SHAFT, SLEDM701 1-541-328-21 MOTOR, DC (SLED)
NOTE:• Due to standardization, replacements in the
parts list may be different from the partsspecified in the diagrams or the componentsused on the set.
• -XX, -X mean standardized parts, so theymay have some difference from the originalone.
• Items marked “*” are not stocked since theyare seldom required for routine service.Some delay should be anticipated whenordering these items.
• CAPACITORS:uF: µF
• COILSuH: µH
• RESISTORSAll resistors are in ohms.METAL: metal-film resistorMETAL OXIDE: Metal Oxide-film resistorF: nonflammable
IC321 6-701-824-11 IC BD3870FS-E2IC801 6-801-780-01 IC uPD789478GC-A03-8PTIC802 8-759-658-46 IC S-81233SGY-ZIC803 8-759-487-03 IC BR24C01AF-WE2IC805 8-759-645-87 IC PST9128-T
MAIN
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
48
CFD-G55
< JACK >
J381 1-566-822-21 JACK (LINE IN)
< JUMPER RESISTOR >
JC131 1-216-864-11 METAL CHIP 0 5% 1/16WJC231 1-216-864-11 METAL CHIP 0 5% 1/16WJC307 1-216-864-11 METAL CHIP 0 5% 1/16W
(US)JC802 1-216-864-11 METAL CHIP 0 5% 1/16WJC804 1-216-864-11 METAL CHIP 0 5% 1/16W
0T901 1-435-964-11 TRANSFORMER, POWER (US,CND,E92,MX)0T901 1-435-965-11 TRANSFORMER, POWER (MY,SP)**************************************************************
The components identified bymark 0 or dotted line with mark0 are critical for safety.Replace only with part numberspecified.
Les composants identifiés parune marque 0 sont critiquespour la sécurité.Ne les remplacer que par unepièce portant le numéro spécifié.
53
CFD-G55
MEMO
CFD-G55
REVISION HISTORY
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