Sony CFDW-57-L Service manual

CFD-W57L

SERVICE MANUAL

Ver 1.2 2000. 07 With SUPPLEMENT-1 (9-923-385-81)

Section

AEP Model

UK Model

Model Name Using Similar Mechanism CFD-222L CD Loading Mechanism Type KSL-213CGP CD Mechanism Type KSM-213CGP Optical Pick-up Name KSS-213C Model Name Using Similar Mechanism NEW T ape Transport Mechanism Type MF-W57

CD player section

System

Compact disc digital audio system

Laser diode properties

Material: GaAlAs Wave length: 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

Frequency response

20 - 20,000 Hz +1/–2 dB

Wow and flutter

Below measurable limit

Radio section

Frequency range

FM UK, German model 87.6 - 107 MHz

Italian model 87.5 - 108 MHz East European model 65 - 74 MHz

87.5 - 108 MHz MW 531 - 1,602 kHz LW 153 - 279 kHz

FM: 10.7 MHz MW/LW: 450 kHz

Aerials

FM: Telescopic aerial MW/LW: Built-in ferrite bar aerial

SPECIFICATIONS

Cassette-corder section

Recording system

4-track 2 channel stereo

Fast winding time

Approx. 120 s (sec.) with Sony cassette C-60

Frequency response

TYPE I (normal): 70 - 12,500 Hz

General

Speaker

Full range: 8 cm (3 1/4 in.) dia.,

3.2 ohms, cone type (2)

Outputs

Headphones jack (stereo minijack) For 16 - 64 ohms impedance headphones

Maximum power output

4.5 W + 4.5 W

Power requirements

For CD radio cassette-corder: 230 V AC, 50 Hz 12 V DC, 8 R20 (size D) batteries For memory back-up: 6 V DC, 4 R6 (size AA) batteries For remote control: 3 V DC, 2 R6 (size AA) batteries

Power consumption

AC 25 W

– Continued on next page –

CD RADIO CASSETTE-CORDER

MICROFILM

– 1 –

Battery life

For CD radio cassette-corder:

FM recording

Sony R20P: approx. 4.5 h Sony alkaline LR20: approx. 12 h

Tape playback

Sony R20P: approx. 2 h Sony alkaline LR20: approx. 4.5 h

CD playback

Sony R20P: approx. 2 h Sony alkaline LR20: approx. 4.5 h

Dimensions

Approx. 444 × 180 × 256 mm (w/h/d) (17 1/2 × 7 1/8 × 10 1/8 inches) (incl. projecting parts)

Mass

Approx. 7.0 kg (15 lb. 7 oz.) (incl. batteries)

Supplied accessories

AC power cord (1) Remote control (RMT-CW57AD) (1) (Except East European model) Remote control (RMT-CW57A) (1) (East European model) Conversion plug adaptor (1) (UK)

Design and specifications are subject to change without notice.

This Compact Disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the bottom exterior.

CAUTION

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

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.

Notes on Chip Component Replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

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.

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 P ART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

NOTES ON CABINETS ASSEMBLY

REAR CABINET

FRONT CABINET

Put flat cable and wires between the cabinets and push them in the grooves located at A to E in the figure to prevent disconnection before assembling the set.

– 3 –

TABLE OF CONTENTS

1. GENERAL

Playing a CD ........................................................................... 5

Listening to the radio...............................................................6

Playing a tape .......................................................................... 7

Recording on a tape ................................................................. 8

2. DISASSEMBLY

2-1. Front Cabinet Assy.............................................................. 9

2-2. Power Board........................................................................ 9

2-3. Tuner Board....................................................................... 10

2-4. Upper Cabinet Assy .......................................................... 10

2-5. CD Mechanism Block ....................................................... 11

2-6. Main Board ....................................................................... 11

2-7. Record/Playback Switch Board......................................... 12

2-8. Cassette Mechanism Block ............................................... 12

2-9. Holder (MG) Assy............................................................. 13

2-10. Disc Table.......................................................................... 13

2-11. Pulley (S)........................................................................... 14

2-12. Holder (BU) Assy..............................................................14

3. MECHANICAL ADJUSTMENTS............................... 15

4. ELECTRICAL ADJUSTMENTS

Tape Section .......................................................................... 15

Tuner Section.........................................................................17

CD Section ............................................................................ 18

5. DIAGRAMS

5-1. IC Pin Description............................................................. 19

5-2. Circuit Boards Location .................................................... 20

5-3. Block Diagram –CD Section–........................................... 21

5-4. Block Diagram –Main Section–........................................ 23

5-5. Printed Wiring Board –Tuner Section– ............................. 25

5-6. Schematic Diagram –Tuner Section–................................ 26

5-7. Schematic Diagram –CD Section–.................................... 30

5-8. Printed Wiring Boards –CD Section– ............................... 33

5-9. Printed Wiring Boards –Main Section– ............................ 36

5-10. Schematic Diagram –Main Section–................................. 39

5-11. Printed Wiring Board –Panel Section–.............................. 44

5-12. Schematic Diagram –Panel Section– ................................ 47

6. EXPLODED VIEWS

6-1. Front Cabinet Section........................................................ 52

6-2. Rear Cabinet Section......................................................... 53

6-3. Upper Cabinet Section ...................................................... 54

6-4. Tape Mechanism Section-1 ............................................... 55

6-5. Tape Mechanism Section-2 ............................................... 56

6-6. Tape Mechanism Section-3 ............................................... 57

6-7. Tape Mechanism Section-4 ............................................... 58

6-8. CD Mechanism Section .................................................... 59

6-9. Optical Pick-up Section .................................................... 60

7. ELECTRICAL PARTS LIST......................................... 61

– 4 –

SECTION 1

GENERAL

This section is extracted from instruction manual.

– 5 –

– 6 –

– 7 –

– 8 –

SECTION 2

DISASSEMBLY

• The equipment can be removed using the following procedure.

Set Front cabinet assy Power board

Tuner board Upper cabinet assy CD mechanism block Holder (MG) assy Disc table

Pulley (S) Holder (BU) assy Main board Record/playback switch board

Cassette mechanism block

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

2-1. FRONT CABINET ASSY

CNP311

BVTP 3x16

CNJ308

front cabinet assy

battery case lid

2-2. POWER BOARD

BVTP 3x12

CNP902

BVTP 3x16

telescopic antenna

BVTP 3x12

CNP901

BVTP 3x10

– 9 –

POWER board

2-3. TUNER BOARD

TUNER board

BVTP 3x10

CN1

RADIO BRACKET board

BVTP 3x10

2-4. UPPER CABINET ASSY

BVTP 3x10

upper cabinet assy

BVTP 3x10

CNP760

BVTP 3x10

– 10 –

2-5. CD MECHANISM BLOCK

CD mechanism block

BVTP 3x10

2-6. MAIN BOARD

CNP314

BVTP 3x10

MAIN boar

CNP302

CNP309

CNP805

CNP806

– 11 –

2-7. RECORD/PLAYBACK SWITCH BOARD

CNP301

BVTP 3x10

lug plate

BVTP 3x10

RECORD/PLAYBACK SWITCH boar

2-8. CASSETTE MECHANISM BLOCK

BVTP 3x10

cassette mechanism bloc

BVTP 3x10

CNP807

CNP808

– 12 –

2-9. HOLDER (MG) ASSY

)

holder (MG) assy

Push the two claws in the arrowed direction and lift the holder (MG) assy.

BVTP 3x8

Push the two claws in the arrowed direction and lift the holder (MG) assy.

2-10. DISC TABLE

KTP 2.6x6

disc table

shaft (table guide

– 13 –

2-11. PULLEY (S)

gear (C)

gear (P)

pulley (S)

belt

2-12. HOLDER (BU) ASSY

cam

holder (BU) assy

yoke bracket

connector

– 14 –

SECTION 3

0000

phones jack

digital frequency counter

set

Ω

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

MECHANICAL ADJUSTMENTS

SECTION 4

ELECTRICAL ADJUSTMENTS

PRECAUTION

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

record/playback head pinch roller erase head rubber belts capstan idlers

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

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.

6. Power supply voltage: 12 V dc.

Torque Measurement DECK A DECK B

Mode Torque meter Meter reading

Forward CQ-102C

Forward back tension (0.03 to 0.07 oz • inch)

Fast Forward and CQ-201B Rewind

CQ-102C

22.5 to 55 g • cm

(0.31 to 0.76 oz • inch)

2 to 5 g • cm

60 to 120 g • cm

(0.83 to 1.67 oz • inch)

TAPE SECTION 0 dB = 0.775 V

Standard Input Level

Input terminal MIX MIC

source impedance 300 Ω

input signal level 3.085 mV (–48 dB)

Standard Output Level

Output terminal SP OUT PHONES OUT

load impedance 6 Ω 32 Ω

output signal level 0.775 V (0 dB) 0.25 V (–10 dB)

Test T ape

Tape Signal Used for

WS-48A 3 kHz, 0 dB tape speed adjustment P-4-A063 6.3 kHz, –10 dB head azimuth adjustment

Tape Speed Adjustment DECK A

Procedure:

• Perform normal speed adjustment before high speed check. Mode: playback (deck A)

record (deck B)

Tape Tension Measurement DECK A DECK B

Mode Tension meter Meter reading

Forward CQ-403A

more than 150 g

(more than 5.29 oz)

Deck

A Normal (playback) RV301 2,970 to 3,000 Hz A HI-SPEED DUBBING

B HI-SPEED DUBBING

Frequency difference between the beginning and the end of the tape should be within ± 1.5% (both Normal and Hi-speed).

Adjustment Location:

Tape Adjustment Frequency

speed point counter

(playback)

(record)

(confirmation)

——— ———

–set rear view–

5,500 to 5,900 Hz

RV301

TAPE

SPEED

ADJ

– 15 –

REC/PB Head Azimuth Adjustment DECK A DECK B

Procedure:

1. Mode: playback

test tape P-4-A063 (6.3 kHz, –10 dB) level meter

Ω

set

phones jack

2. Turn the adjustment screw for the maximum output levels. If these levels do not match. Turn the adjustment screw until both of output levels match together within 3 dB.

Adjustment Location: playback head (deck A)

record/playback head (deck B)

adjustment screw

L-CH peak

screw position

3. Phase Check Mode: playback

test tape P-4-A063 (6.3 kHz, –10 dB)

R-CH peak

L-CH

R-CH

Output level

set

phones jack

Screen pattern

within 3 dB

L-CH peak

L-CH

Ω

Ω

R-CH



within 3 dB

R-CH peak

osilloscope



angle

in phase 45˚ 90˚ 135˚ 180˚

good wrong

Note: Finish the screw adjustment with a turn in the clockwise

direction. After the adjustment, lock the adjustment screw.

– 16 –

TUNER SECTION 0 dB = 1 µV

)

• FM Section

Setting:

BAND switch: FM

FM RF signal generator

0.01

22.5 kHz frequency deviation by 400 Hz signal Output level : as low as possible

antenna terminal (FH1)

set

FM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display

Reading on Digital voltmeter 1.4 ± 0.2 V

87.5 MHz (65 MHz)

108 MHz

3.5 ± 0.1 V

(7.3 ± 0.2 V)

Adjustment Part <confirmation> L2

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 CT1

87.5 MHz (68 MHz) 108 MHz (102 MHz)

• MW/LW Section

Setting:

BAND switch: MW or LW

AM RF signal generator

Put the lead-wire antenna close to the set.

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

• Connecting Level Meter (FM, MW and LW)

level meter (range: 0.5-5 V ac

Ω

set

phones jack

• Connecting Digital Voltmeter (FM, MW and LW)

digital voltmeter

MW FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 531 kHz 1,611 kHz Reading on Digital voltmeter 0.9 ± 0.1 V 5.7 ± 0.1 V Adjustment Part L4 CT2

MW TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3-1 CT4

621 kHz 1,404 kHz

LW FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 153 kHz 279 kHz Reading on Digital voltmeter 0.6 ± 0.15 V 5.7 ± 0.1 V Adjustment Part <confirmation> CT3

L W TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3-2 CT5

162 kHz 261 kHz

( ) : East European model

100 k

JW44

TP (VT)

Ω

• Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.

Adjustment Location: See page 18.

– 17 –

Adjustment Location: tuner board

–tuner board (component side)–

TRACKING

ADJ

CT3

FREQUENCY

COVERAGE

ADJ

TRACKING

ADJ

CT5

L3-2

CT1

FREQUENCY

COVERAGE

ADJ

FH1

ANTENNA

TERMINAL

CT2

CT4

TRACKING

L3-1

FREQUENCY

COVERAGE

ADJ

TP (VT)

MW ADJ

JW44

CD SECTION

CD section adjustments are done automatically in this set.

– 18 –

SECTION 5

DIAGRAMS

5-1. IC PIN DESCRIPTION

• IC801 CXP83120A-029Q (SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 C-SCOR I CD SCOR input 2 W/UP I W ake-up input 3 RMC I Sircs receiver input 4 OPEN-O O CD loading motor control output (Eject direction) 5 CLS-O O CD loading motor control output (Loading direction) 6 OPEN-I I CD open switch input 7 CLS-I I CD close switch input 8 — — Not used.

9 C-SENS1 I CD SENSE-1 input 10 C-SENS2 I CD SENSE-2 input 11 C-SQCK O CD Sub-Q read clock output 12 C-SQSO I CD Sub-Q data input 13 — — Not used. 14 C-XRST O CD reset output 15 C-XLAT O CD serial latch output 16 C-CLK O CD serial clock output 17 C-DATA O CD serial data output 18 R-ST O Stereo ingicator output 19 R-DATA O Tuner PLL data output 20 R-CLK O Tuner PLL clock output 21 R-COUNT I Tuner PLL data input 22 R-CE O Tuner PLL chip enable output 23 P.CON O System power control output 24 V-DATA O Volume serial data output 25 V-CLOCK O Volume serial clock output 26 V-CE O Volume serial chip enable output 27 REG-CHK I Low voltage detection input 28 BL-CONT O Back light control output 29 REC I Tape record signal input 30 INI O Tuner select initial setting output 31 SET 9k/10k I Tuner band 9k/10k select input 32 VERSION I Tuner destination band select input

33 – 36 KEY-1 – 4 I Key input

37 SFT-CLK O Shift clock output 38 RESET I System reset input 39 EXTAL1 I Oscillation input (4.19 MHz) 40 XTAL1 O Oscillation output (4.19 MHz) 41 VSS — GND 42 XTAL2 — Not used. 43 EXTAL2 — Not used (Conected to GND). 44 AVREF I A/D converter VREF input 45 AVSS — Analog GND 46 VL O LCD drive port ON/OFF output

47 – 49 VLC-3 – 1 O LCD drive voltege terminal 50 – 53 COM0 – 3 O LCD drive common output 54 – 76 SEG0 – 22 O LCD drive segment output 77 – 80 — — Not used.

81, 82 NC — Not used.

83 ROCK-LED O Not used. 84 POP-LED O Not used. 85 LIVE-LED O Not used.

– 19 –

Pin No. Pin Name I/O Pin Description

86 VOCAL-LED O Not used.

87, 88 NC — Not used.

89 VDD — Power supply pin (+5 V) 90 NC — Not used. 91 VSS — GND 92 TX O Oscillation output (32.768 kHz) 93 TXE I Oscillation input (32.768 kHz) 94 ISS1 O Tape ISS1 control output 95 ISS2 O Tape ISS2 control output 96 A-MUTE O Audio mute output 97 R-MUTE O Tuner mute output 98 C-MUTE O CD mute output 99 TC2 I Tape play switch input (Deck A) 10 TC1 I Tape play switch input (Deck B)

5-2. CIRCUIT BOARDS LOCATION

CONTROL board

TUNER board

RADIO BRACKET board

CD board

LOADING board

HEADPHONE BRACKET board

MAIN board

LAMP board

LCD board

RECORD/PLAYBACK SWITCH board

BACK UP board

BATTERY board

POWER board

HEADPHONE board

– 20 –

5-3. BLOCK DIAGRAM — CD SECTION —

CFD-W57L

OPTICAL PICK-UP

BLOCK

(KSS-213C)

TRACKING

COIL

FOCUS

COIL

M702

SLED

MOTOR

M701

SPINDLE

MOTOR

M703

MOTOR

RF AMP & SYSTEM SERVO PROCESSOR

PD1

38 33 35

PD2

LD ON

SWITCH

Q701

VREF

T+

T-

F+

F-

SL+

SL-

SP+

SP-

OUT1

OUT2

CONTROL

LOADING MOTOR DRIVE

RF AMP

LASER DIODE

FE AMP

TRACKING

COIL

DRIVE

FOCUS

COIL

DRIVE

SLED

MOTOR

DRIVE

SPINDLE

MOTOR

DRIVE

OPTICAL PICK-UP

DRIVE

IC702

MOTOR

DRIVE

IC703

IC701

CONVERTER

TIN

FIN

MUTE

SLIN

SPI

INPUT1 INPUT2

SERIAL/

PARALLEL

DECODER

COMAND

TRACKING

2 3

(OPEN)

(CLOSE)

PHASE

TAO

S702

S703

RF O

FOK

C. OUT

IIL

TTL

IIL

FOCUS PHASE

FEO

6 16 757456171521 8 9 62

SENS1 SENS2

DATA

XLT CLK

XRST

5 4

24 25 26

22 21 20

SLO

CLS-O OPEN-O

OPEN-I

CLS-I

XRST

11 10

12 13 14

FOK

CNIN SEIN

DATO XLTO CLKO

XRST

DIGITAL

CLV

MDP

S701

(LIMIT)

EFM DEMODULATOR

INTERFACE

SERVO

AUT

SEQ.

CPU INTERFACE

SPOA

XLON

SENS29SENS1

SYSTEM CONTROL

IC801 (1/2)

DIGITAL SIGNAL PROCESSOR

D/A

SUB CODE

PROCESSOR

SENS

SQSO

SQCK

SCOR

SQCK

SQSO

SCOR

DATA

XLAT

DATA

IC704

SERIAL

INTERFACE

CLOK

SYSM

CLK

XLAT

MUTE

DIGITAL

FILTER

D/A

CONVERTER

XTAI

XTAO

70•71

X701

16.9344MHz

PWM

AMP

PWM

AMP

AOUT1

LOUT1

AOUT2

LOUT2

Signal path

: CD

R-CH

CD L-CH

MAIN

SECTION

– 21 – – 22 –

CFD-W57L

5-4. BLOCK DIAGRAM — MAIN SECTION —

PLAYBACK

ANT1

TELESCOPIC

ANTENNA

HP301

HEAD

(DECK A)

HRP301

RECORD/

HEAD

(DECK B)

R-CH

L-CH

R-CH

S602

(MD POWER)

DECK B

S605

(MD POWER)

DECK A

VT LPF Q13

REG Q14

D304

PON+B

FL1

BPF

12V

S301-2

REC

R-CH

CT4 CT5

ISS1 Q320

10V REG

Q318

PON+B

MW/LW

FERITE-ROD

ANTENNA

MW/LW

SWITCH

Q2–5

Q325

Q21

CD SECTION

ISS2 Q319

Q326

ISS1

REC

COM0

50–53

Q22

CT2 CT3

SWITCH

CD L-CH

S301-1

REC PB

T301

95 9994

ISS2

COM3

SEG0

SEG22CECLK

54–76 92•93 33–36

LCD801

PD1

AM RF

24 3 7

AMP

FM RF

CT1

L1 L2

CD-L

A-L

REC EQ

B-L

TR-C

–+

TUNER TUNER

22 20 19 21

4115 6 7

OSC

MIX

BIAS

TR-B

OSC

TU-L

Q321

RV301

TAPE

SPEED

DATA

COUNT

AM IN

16 17 1 2 8

MIX

OSC

2123

Q322

32.768KHz

FM IN

OSC

PRE-AMP

IC301

OUT-R

LOGIC

MIC/HS 7 28

S301-3

HIGH

NORMAL

SYSTEM CONTROL

IC801 (2/2)

TXE

X802

CLOCK

SHIFT

Q801

PLL IC2

XOUT

75KHz

FM/MW/LW FRONT-END, IF DET,

FM STEREO DEMODULATOR

FUNCTION

A/B

NOR/HI

Q304

EXTAL1

39 40 37 38 18 297

X801

4.19MHz

XIN

IC1

CFT1

Q23

OUT-L

14 2 9 12 3

R-CH

Q301

Q302

S604

(MD PLAY)

DECK A

100

Q12

TC2

XTAL1

CLOCK

SHIFT

Q802

MO/ST

9 14

14 181922

MO/ST

SFT-CLK

BUFFER

IF IN

TC1

RESET

IC802

COM 5V

Q10

DET

RESET

15 10

BAND

VOLUME/SOUND CONTROL

IN1

SURROUND TONE VOL

CONTROL

TUNER

TAPE

S603

(MD PLAY)

DECK B

Q17

ST-IND

BUFFER

QUAD

L.DETCKDATA

13 12 20 19 18

LOW DET

Q323

REG-CHK

MUTE

17 16

IC302

OUT1

Q101

Q307

LATCH

211415

Q308

TUNER

25 24 26 96

DATA

CLOCK

VOL

KEY1

KEY4

W/UP

S811–834

H. FREQ.

CUT

MUTE

CONTROL

Q18, 19

D801–803, 806

IF CUT

CF4CF3CF2CF1

MPX

VCO 13

SIRCS

RECEIVER

IC811

H. FREQ.

A-MUTE

RMC

MUTE

189

IF CUT

Q11

POWER AMP

BL-CONT

P.CON

IC303

TUNER

R-CH

PL801–803

CD 5V

TU 6.8V

R-CH

Q15

COM 5V

SW 5V

LAMP ON

Q805, 806

Q316, 317

TUNER 6.8V

Q305, 306

R-CH

SWITCH

CD 5V

SWITCH

REG

B+ SWITCH

Q309, 310

5V REG

Q314

OPR/BATT

SP901

SPEAKER

(L-CH)

D310D303

PON+B

D811

7.5V

CD 7V

12V

J301

5V REG

IC304

D906

D302, 309

POWER ON

SWITCH

Q312, 313

7.5V REG Q311

PON+B

CD 7V

REG

Q315

PON+B

Signal path

: FM

: MW

: PLAY (DECK A)

: PLAY (DECK B)

: REC (DECK B)

: CD

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION R6)

4PCS, 6V

T901

POWER

TRANSFORMER

RECT

D901– 904

DRY BATTERY

SIZE "D"

(IEC DESIGNATION R20)

8PCS, 12V

J901

AC IN

– 23 – – 24 –

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