Sony CFD-G30, CFD-G50 Service manual

CFD-G30/G50

SERVICE MANUAL

Ver 1.1 2001. 09 With SUPPLEMENT-1

PHOTO : CFD-G50

CD Section

Tape deck Section Tape Transport Mechanism Type MF-V10-117

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 3.2 Ω loads, both channels driven from 150 – 10,000 Hz; rated 2.5 W per channel-minimum RMS power, with no more than 10 % total harmonic distortion in AC operation. Woofer with 4-ohm loads, driven at 50 -150 Hz; rated 9.5 W minimum RMS power, with no more 10 % total harmonic distortion in AC operation.

Other Specifications CD player section

System Compact disc digital audio system Laser diode properties Material: GaAlAs

Wavelength:780 nm Emission duration : Continuous Laser output : Less than 44.6 µW (This output is the value measured at a distance of

about 200 mm from the objective lens surface on

the optical pick-up block with 7 mm aperture.) Spindle speed 200 r/min (rpm) to 500 r/min (rpm) (CLV) Number of channels 2 Frequency response 20 – 20,000 Hz + 0.5/-1.5 dB Wow and flutter Below measurable limit

Radio section

Frequency range FM : 87.6 – 108 MHz

AM : 530 – 1,710 kHz

Aerials FM : Telescopic antenna

AM : Built-in ferrite bar aerial

Cassette-corder section

Recording system 4 -track 2 channel stereo Fast winding time Approx. 110 sec. with Sony cassette C-60 Frequency response TYPE I (normal) : 70 – 13,000 Hz

General

Speakers 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)

Inputs LINE IN (stereo minijack) : Sensetivity 436 mV

Outputs Headphones jack (stereo minijack)

For 16 – 68 Ω impedance headphones

US Model

Canadian Model

E Model

Model Name Using Similar Mechanism CFD-V17

CD Mechanism Type KSM-213CDM

Optical Pick-up Name KSS-213C

Model Name Using Similar Mechanism CFD-V17

Power output (excluding US model)

Full range : 4 W + 4 W (at 3.2 Ω, 10 % harmonic distortion in DC operation) Woofer : 12W (at 3.2 Ω, 10 % harmonic distortion in DC operation)

Power requirements For CD radio cassette-corder :

120V AC, 60 Hz 12V DC, 8 size D (R 20) batteries For remote contorol (CFD-G50 only):

3V DC, 2 size AA (R6) batteries Power consumption AC 30W Battery life For CD radio cassette-corder:

FM recording

Sony R20P : approx. 8 h

Sony alkaline LR20 : approx. 18 h

Tape playback

Sony R20P : approx. 1.5 h

Sony alkaline LR20 : approx. 6 h

CD playback

Sony R20P : approx. 1 h

Sony alkaline LR20 : approx. 4 h

Dimensions Approx. 500 × 206 × 328 mm (w/h/d)

(19 3/4 × 8 1/8 × 13 inches) (incl. projecting

parts) Mass Approx. 7 kg (15 lb. 7 oz) (incl. batteries) Supplied accessories AC power cord (1)

Remote control (1) (CFD-G50 only)

Design and specifications are subject to change without notice.

9-927-676-12

2001I1600-1

CD RADIO CASSETTE-CORDER

Sony Corporation

Personal Audio Company

Shinagawa Tec Service Manual Production Group

TABLE OF CONTENTS

1. SERVICE NOTES ···························································· 3

SAFETY CHECK-OUT

2. GENERAL ·········································································· 4

3. DISASSEMBLY

3-1. Front Cabinet Assy ····························································· 5 3-2. Control-1, Head Phone Board ············································ 6 3-3. Cabinet (Upper) Assy ························································· 6 3-4. Power, Batt, Tuner, Batt Com Board ·································· 7 3-5. Main, Line In, LCD Board ················································· 7 3-6. CD Board, Optical Pick-up Section,

Mechanism Deck ································································ 8

4. ADJUSTMENT

4-1. Mechanical Adjustment ······················································ 9 4-2. Electrical Adjustment ························································· 9

5. DIAGRAM

5-1. Circuit Boards Location ··················································· 12 5-2. Block Diagrams – Tuner Section –··································· 13

– Main Section –······························································· 15 5-3. Schematic Diagram – CD Section –·································18 5-4. Printed Wiring Board – CD Section – ······························ 21 5-5. Schematic Diagram – Cassette Deck Section –················ 23 5-6. Printed Wiring Board – Cassette Deck Section – ············· 25 5-7. Schematic Diagram – Tuner Section –·····························27 5-8. Printed Wiring Board – Tuner Section – ·························· 29 5-9. Printed Wiring Board – Main Section – ··························· 31 5-10. Schematic Diagram – Main Section (1/2) – ····················· 33 5-11. Schematic Diagram – Main Section (2/2) – ····················· 35 5-12. Printed Wiring Board and Schematic Diagram

– Control Section –··························································37 5-13. Schematic Diagram – Power Section – ···························· 39 5-14. Printed Wiring Board – Power Section – ························· 41 5-15. IC Pin Function Description·············································43 5-16. IC Block Diagrams ··························································· 45

6. EXPLODED VIEWS

6-1. Front Cabinet Section ······················································· 49 6-2. Rear Cabinet Section ························································ 50 6-3. Upper Cabinet Section······················································ 51 6-4. Mechanism Deck Section (1) (MF-V10-117) ·················· 52 6-5. Mechanism Deck Section (2) (MF-V10-117) ·················· 53 6-6. Optica Pick-up Section (KSM-213CDM) ························ 54

7. ELECTRICAL PARTS LIST ··································· 55

After correcting the original service problem, perform the following 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 A C leakage. Check leakage as described below.

LEAKAGE

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a 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 RCA WT -540A. Follo w the manufacturers’ instructions to use these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC v oltmeter . The “limit” indication is 0.75 V, so analog meters must ha ve an accur ate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are e xamples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A)

T o Exposed Metal

Parts on Set

AC

0.15

µ

F

Fig. A. Using an A C v oltmeter to check A C leakage.

1.5 k

Ω

Earth Ground

Voltmeter (0.75 V)

— 2 —

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

SECTION 1

Insert a precision screw driver and push SWITCH(S801)

SERVICE NOTES

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior.

The following caution label is located inside the unit.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc., on clothing and the human body. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

CHUCK PLATE JIG ON REPAIRING

On repairing CD section, playing a disc without the CD lid, use Chuck Plate Jig.

• Code number of Chuck Plate Jig : X-4918-255-1

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

1. 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 Po wer Control circuit or Optical Pick-up is broken. Objective lens moves up and down once for the focus search.

— 3 —

LOCATION AND FUNCTION OF CONTROLS

SECTION 2

GENERAL

wd

,wf,wg,wh

qlqkqj w;

qh qg qf qd

1 CD Z PUSH OPEN/CLOSE button 2 CD LID 3 CD u button 4 VOLUME + button 5 VOLUME − button 6 CD x button 7 Speaker 8 LINE jack 9 SOUND button 0 POWER DRIVE WOOFER button qa PLAY MODE (MONO/ST) button qs i Phone jack qd DISPLAY ENT MEMORY button qf SLEEP button qg POWER button

wa

3ws

1, 2

8qs 0 9qa

qh Tape operation buttons

z button

N button m button M button

x, Z button

X button

qj CASSETTE LID qk AUTO PRESET − button ql RADIO BAND AUTO PRESET button w; AUTO PRESET + button wa TUNE ., > buttons ws Information display OPR/BATT indicator wd AC IN jack wf FM rod antenna wg Battery compartment wh LINE IN jack

4 5 6 7

— 4 —

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

Front cabinet assySet

Cabinet (upper) assy Control-1, Head phone board

Note : Follow the disassembly procedure in the numerical order given.

3-1. FRONT CABINET ASSY

!¡

Front cabinet assy

9

Flexible

!º

Connector

8

+BVTP 3

Power, Batt, Tuner, batt com board

Main, LIine in, Lcd board CD board,

6

Remove the Handle

Screw

in the direction of the arrow.

×

10

Optical pick-up section, Mechanism deck

7

Open the Lid (CD) in

the direction of the arrow.

2

Screws

+BVTP 3

×

12

4

Screw

+BVTP 3

3

Three screws

+BVTP 3

5

Screw

+BVTP 3

1

Lid, battery case

×

16

×

12

×

16

— 5 —

3-2. CONTROL-1, HEAD PHONE BOARD

8

4

HEAD PHONE board

3-3. CABINET (UPPER) ASSY

2

Open the cassette the holder assy by

pressing STOP/EJECT button.

3

Screw

+BVTP 3

6

T wo screws

+BVTP 3

×

10 CZN

×

10 BZN

5

T wo connectors

2

CONTROL-1 board

1

Four screws

+BVTP 3

3

Screw

+PWH 2.6

×

10 BZN

4

the direction of the arrow.

×

10

1

+BVTP 2.6

Open the CD lid in

T en screws

×

!º

Cabinet (upper) assy

STOP/EJECT

button

7

Connector

9

5

Screw

+BVTP 3

!¡

Open the Handle in

the direction of the arrow.

×

10 BZN

8

Connector

— 6 —

3-4. POWER, BATT, TUNER, BATT COM BOARD

0

8

Power board

1

Screw

6

T wo screws

+BVTP 3

7

Connector

2

T wo screws

+BVTP 3

×

16

×

12

3

Screw

+BVTP 3

×

12

×

12

5

T wo screws

+BVTP 3

!º

BATT

board

9

Screw

+WH 3

4

Chassis (TRANS)

×

10

×

8



!£

TUNER board

!™

T wo screws

+BVTP 3

!º

Three screws

+BVTP 3

!∞

Connector

!¢

Screw

+WH 3

×

8

!§

BATT COM board

×

10

!¡

Chassis (TU)

×

10

3-5. MAIN, LINE IN, LCD BOARD

1

Three screws

+BVTP 3

6

Connector

0

Mian board

7

Connector

×

10

5

Flexible

!™

LINE IN board

3

!¡

Screw

+BVTP 3

×

10

2

T wo screws

+BVTP 3

4

Flexible

8

Connector

×

1

9

Flexible

!£

T wo screws

+BVTP 3

!¢

LCD board

×

10

— 7 —

3-6. CD BOARD, OPTICAL PICK-UP SECTION, MECHANISM DECK

n

1

Remove solder

2

Screw

×

3

CD board

4

Three screws

+PWH 2.6

6

Optical pick-up section

×

10

+P 2

6

5

T wo screws

+PWH 2.6

×

10

7

Three screws

+BVTP 3

×

10

8

Mechanism deck sectio

— 8 —

SECTION 4

ADJUSTMENTS

4-1. MECHANICAL ADJUSTMENT

PRECAUTION

1. Clean the following parts with a denatured-alchool-moistened swab:

record/playback head pinch roller erase head rubber belts capstans

2. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head.)

Torque Measurement

Mode

FWD

FWD back tension

Fast Forward

Rewind

T ape Tension Measurement

Torque Meter

CQ-403A

Torque Meter

CQ-102C

CQ-201B

Meter Reading

18 – 60 g•cm

(0.25 – 0.83 oz•inch)

1.0 – 5.0 g•cm

(0.014 – 0.069 oz•inch)

45 – 95 g•cm

(0.62 – 1.32 oz•inch)

45 – 95 g•cm

(0.62 – 1.32 oz•inch)

Meter Reading

more than 60 g

(more than 2.12 oz)

4-2. ELECTRICAL ADJUSTMENT

0dB = 0.775V

TAPE RECODER SECTION

Standard output level

Output

Load impedance Output signal level

Test tape

Test Tape

WS-48A

Tape Speed Adjustment

Procedure :

Mode : Playback

test tape WS-48A (3kHz, 0dB)

Adjustment V alue : normal tape speed Adjust the tape speed adjustment control inside motor, so that the frequency counter reading becomes 3,000 Hz.

Signal

3 kHz, 0 dB

set

Tape speed adjustment

J391 (phones)

HP OUT

32 Ω

0.25 V (–10 dB)

Used for

digital frequency counter

32

Ω

+ –

Specification V alue :

Digital frequency counter

2,910 – 3,090Hz

Frequency difference between the beginning and the end of the tape should be within 1.5% (45 Hz).

Adjustment Location :

— 9 —

Tape speed adjustment control inside motor

TUNER SECTION

r

• Switch Location

VOLUME : MAX MEGA BASS : OFF PRESET SOUND MODE : OFF

AM SECTION

BAND : AM Signal generator

AM RF signal generator

30% amplitude modulation by 400Hz signal. Output level : as low as possible

0 dB = 1 µV

Put the lead-wire antenna close to the set.

• Repeat the procedures in each adjustment several times for the maximum level meter indication.

• The frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T2 455 kHz

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 620 kHz

CT3 1,400 kHz

AM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

L4 520 kHz

FM SECTION

BAND : FM Signal generator

FM RF signal generator

75kHz (100%) amplitude modulation by 1kHz signal. Output level : as low as possible

set

0.01µF

32

Ω

J391 (phones)

telescopic antenna terminal

level mete

+ –

FM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T1 10.7 MHz

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 86.5 MHz

CT1 109.5 MHz

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

L2 86.5 MHz

[Adjustment Location : Main board] (Component side)

L2

L4 AM F-COVER. Adjustment

FM F-COVER. Adjustment

T2 AM IF Adjustment

T1 FM IF Adjustment

CT3 L3

AM TRACKING Adjustment

CT1 L1

FM TRACKING Adjustment

— 10 —

SECTION 5

s

DIAGRAMS

CFD-G30/G50

CD SECTION

Focus Bias Check

This check is to be done when the optical block replaced.

Check Procedure:

1. Connect the oscilloscope to test point TP (VC) and TP (RF) on MAIN board.

2. Put the set into test mode.

3. Opitical pick-up setting to the center by + or – button pushing.

4. Insert disk (YEDS-18) and press u button.

5. Press the MODE button. (Tracking servo ON)

6. Check that the oscilloscope wavewform is as sho wn in the figure below (eye pattern). A good eye pattern means that the diamond shape (◊) in the center of the waveform can be clearly distinguished.

7. Release test mode after adjustment is completed.

• RF signal reference waveform (eye pattern)

VOLT/DIV : 0.2V TIME/DIV : 500n

0.9Vp-p – 1.3Vp-p

5-1. CIRCUIT BOARDS LOCATION

BATT board

POWER board

BATT COM board

CONTROL-2 board

VOL SEL board

HEAD PHONE board

CONTROL-1 board

When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensivity.

[Adjustment Location : CD board] (Conductor side)

Oscilloscope

TP

(RF)

TP(VC)

(DC range)

+ –

LCD board

CONTROL-3 board

PRE board

TUNER board

LINE IN board

MAIN board

CD board

— 11 — — 12 —

CFD-G30/G50

5-2. BLOCK DIA GRAMS – TUNER/CD SECTION –

ANT1

FM

TELESCOPIC

ANTENNA

AM

F-COVER.

TUNER BOARD

L4

RADIO 6V

D3

FM TRACKING

RADIO 6V

L1

D1

AM TRACKING

CT1

L3,CT3

RADIO 6V

L2

D2

FERRITE-ROD

CT3

FM

F-COVER.

L3

ANTENNA

FRONT-END

IF AMP,DET,FM MPX

FM RF I

2

FM RF O

24

FM OSC

21

AM RF

22

AM OSC

20

MPX

RADIO 6V

16

MPX

FM

15

MPX

MAIN BOARD (1/2)

RADIO

MUTE Q510

MUTE

3

12

R-CH

11

MASTER CONTROL

IC501(1/2)

MUTE

L-CH

MAIN

A

SECTION

AM

T2

IF

IC1

VDD

FM

AM

XO

XI

CF2

T1

CF4

FM

IF

PLL IC2

MO/ST

13

ST IND

BAND

IF IN

10

FM IF

7

AM IF

6

MO/ST

ST IND

BAND

14

18

13

8

7

MIX

OSC

MIX

OSC

MIX OUT

FM

AM

OSC

4

6V

14

19

X1

75kHz

12

11

20

19

IF

BUFFER

18

IFOUT

DET

10

FM

AM

QUAD

23 5

VCC1 VCC2

FM/AM

BUFFER

• RCH is omitted

• Signal Path

: FM

: CD

OPTICAL PICK-UP

BLOCK

(KSS-213C)

VC

A

B

C

D

E

F

LD

GND

PD

VR

F+

FOCUS

COIL

F-

T+

TRACKING

COIL

16

T-

M701 SLED

MOTOR

M702 SPINDLE MOTOR

M

CD BOARD

D VDD

Q701

LD

DRIVE

RF AMP

IC701

10

VC

4

PD1

5

PD2

8

E

7

F

2

LD ON

LD

AGC CONT

3

PD

MOTOR/COIL DRIVE

IC703

17

F+

18

F-

13

T+

14

T-

12

SL+

11

SL-

15

SP+

16

SP-

RFO

RFI

FFDR

FRDR

TFDR

TRDR

SRDR

SFDR

SP IN

MUTE

LP OUT

18

17

16

DIGITAL SERVO

DIGITAL SIGNAL PROC.

D/A CONV.

IC702

15

16

13FE

11TE

19

Q702

18

24

23

2

3

6

5

25

20

51

43

39

41

40

14

32

33

30

31

29

28

26

RFAC

RFDC

FE

TE

SE

XLON

FFDR

FRDR

TFDR

TRDR

SRDR

SFDR

MDP

L OUT

DATA

CLK

XLAT

SQCK

SCLK

SCOR

SQSO

SENS

SSTP

XRST

LP IN

PD

DO

4

DI

2

CL

3

CE

1

72

R-CH

75R OUT

5

7

6

2

9

20

1

8

27

66XTAI

X101

16.9344MHz

67XTAO

3

L OUT

S702 LIMIT IN SW

MAIN

B

SECTION

14

R COUNT

16

R DATA

15

R CLOCK

17

R LATCH

12

C DATA

10

C CLOCK

11

C LATCH

7

C SQCK

5

C SCLK

1

C SCOR

8

C SQSO

6

C SENS

9

C XRST

13

C AGC CONT

C DOOR

S701

80

(CD DOOR)

— 13 — — 14 —

CFD-G30/G50

– MAIN SECTION –

LINE IN BOARD

J301

LINE

IN

HEAD

L OUT

B

L-CH

A

L-CH

R-CH

M321

(LOADING)

S322

(MOTOR SW)

S321

(PLAY SW)

M

TUNER/CD

SECTION

TUNER/CD

SECTION

HRP301 REC/PB

HE301 ERASE

R-CH

PRE AMP

BOARD

R-CH

RADIO 6V

D VDD

MOTOR SW B+

X502

153kHz

X501

4MHz

T301

REC

PB

73

74

32

31

S301

REC

SWITCH

Q513,514

SWITCH

Q511,512

TX

TEX

XTAL

EXTAL

Q301 BIAS

OSC

24

22

5

4

L IN

RADIO

AUDIO 6V

COM3.3V

79

TC PLAY

TAPE

PB AMP

REC TAPE

REF

6

71

CD

WAVEFORM

1

IC2 w;

MAIN BOARD(2/2)

13.3us

2

3

4

5

6

IC501 ea

IC501 uf

T301

IC702 ta

IC702 yj

250ns

6.5us

18.0us

59ns

PRE AMP

IC301

BUFFER

AMP

REC AMP

26dB

1521

D501

D502

REC

69

TAPE

23

70

RADIO

LINE

7dB

L

20

17

Q515

EEP ROM

IC504

65

24

SCL77SDA

25

KEY1

SOUND/VOLUME

IC321

13

S IN

14

S IN

9

IN

DATA

1

30CE2

20

19

V DATA

IC501(2/2)

SYSTEM CONTROL

KEY2

26

S OUT

L OUT

CLK

18

V LATCH

V CLOCK

HEADPHONE BOARD

12

BASS AGC Q326,327

WOOFER

POWER AMP

12

13

10

11

COM3COM0

4138

IC324

Q518,519

SWITCH

POWER AMP

IC323

STBY

8

VDD(S.W)

3

5

STBY

8

VCC

28

LIGHT CONT

21

Q322

22

P CON

3

AUDIO 6V

65VM30

REG CHK

VDD(S.W)

RESET

INIT

VDD(S.W)

R VT

31

J391

SP391

L

SP392

R

SP393

WOOFER

BATTRY

CHECK

Q503,504

IC503

RESET

SPEAKER

D955

D951

D322

RMC REG

Q509

• RCH is omitted

• Signal Path

: FM

: CD

: PB

: REC

POWER AMP B+

IC502

G30:E4 G50:E4 MODEL

3.3V REG

LOAD Q520

23

9V REG

Q954

Q951

D503

BATT COM

BOARD

RECT

D901-904

POWER BOARD

BATT

BOARD

T901

S1

VOLTAGE

SELECTOR

VOL SEL

POWER

BATT

1.5x8=12V

J901

~AC IN

3.3V REG Q956

µ COM(VDD)

21

D507

D508

6V REG

Q955

D952 D958

POWER SWITCH

Q952

Q953

G50 MODEL

BOARD

G30:E4/G50:E4 MODEL

R-CH

MOTOR SW B+

AUDIO +6V

COM +3.3V

IC651

2RMC

29MODE CHK

62

MODE CHECK

Q507

AC/DC

DISTINCTION

Q505,506

D512

REMOTE

CONTROL

LCD BOARD

(2/2)

21

5

MUTE Q122

L.P.F

IC322

2157

MUTE

Q321

Q328Q329

WOOFER

GAIN CONT

Q517

WOOFER

GAIN CONT

Q516

LED

DRIVE

Q601

D601

D603,604

CONTROL-1 (1/2)

BOARD

76

64

A MUTE

WOOFER 163WOOFER 2

KEY3

27

SEG17SEG0 4942

1.5Vp-p

500mV/div 10µsec/div

3.6Vp-p

1V/div 100nsec/div

2.0Vp-p

500mV/div 5µsec/div

32.0Vp-p

1V/div 10µsec/div

1.1Vp-p

400ns/div 200mV/div

4.0Vp-p

1V/div 20nsec/div

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• b : Pattern from the side which enables seeing.

Note on Schematic Diagrams:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

¢

•

: internal component.

4

W or less unless otherwise

• 2 : nonflammable resistor.

• C : panel designation.

• H : adjustment for repair.

• U : B+ Line.

• Power voltage is dc 12 V and fed with regulated dc po wer supply from battery terminal.

• Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.

Note:

The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.

Note:

Les composants identifiés par une marque ! sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.

– For Radio, TAPE section MAIN (1/2) –

no mark : PLAY (TAPE SECTION)

CD STOP ( ) : REC (TAPE SECTION) [ ] : FM (RADIO SECTION) < > : AM (RADIO SECTION)

– For CD Section MAIN (2/2) –

no mark : CD PLAY

TAPE STOP

• Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

• Signal path.

F : FM E : PB a : REC J : CD

• Abbreviation E4 : 220 V-240 V AC area model E92 : 120 V AC area model CND : Canadian model MX : Mexican model

16

FUNCTION

SWITCH

S631,632

CONTROL-3

BOARD

FUNCTION

SWITCH

S621-623

CONTROL-2

BOARD

FUNCTION

SWITCH

FUNCTION

SWITCH

S603-607

CONTROL-1 BOARD(2/2)

FUNCTION

SWITCH

S608-611S601,602

LCD651

LIQUID CRYSTAL

DISPLAY PANEL

D651

(OPR/BATT)

LCD BOARD(1/2)

— 15 — — 16 — — 17 —

CFD-G30/G50

○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○

5-3. SCHEMATIC DIAGRAM – CD SECTION –

• Refer to page 17 for Note on Schematic Diagrams. • Refer to page 17 for Waveforms. • Refer to page 45, 46 for IC Block Diagrams.

(Page 35)

L704

L701

The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.

Les composants identifiés par une marque ! sont cr itiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.

L709

L708

JC

L710

JC

— 18 — — 19 — — 20 —

CFD-G30/G50

5-4. PRINTED WIRING BOARD – CD SECTION –

12

A

B

C

• Refer to page 12 for Circuit Boards Location. • Refer to page 17 for Note on Printed Wiring Board.

345678

S702

• Semiconductor

Location

Ref. No. Location

IC701 B-3 IC702 E-5 IC703 G-5

Q701 D-2 Q702 A-3

D

E

(Page 31)

F

G

TP(TE)

TP(VC)

TP(RF)

TP(FE)

— 21 — — 22 —