Sony HCD-VB5 Service Manual

HCD-VB5

Main Unit Amplifier section

The following measured at 220 V AC, 50/60 Hz

DIN power output (rated): 10 + 10 watts

(4 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

12 + 12 watts (4 ohms at 1 kHz, 10% THD)

The following measured at 240 V AC, 50/60 Hz

DIN power output (rated): 12 + 12 watts

(4 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

15 + 15 watts (4 ohms at 1 kHz, 10% THD)

Inputs MD/VIDEO (AUDIO) IN (phono jacks):

voltage 500/250 mV, impedance 47 kilohms

MIC (mini jack): Sensitivity 1 mV, impedance

10 kilohms

Outputs MD/VIDEO (AUDIO) OUT (phono jack):

voltage 250 mV, impedance 1 kilohm

VIDEO OUT (phono jack):

max. output level 1 Vp-p, unbalanced, Sync negative, load impedance 75 ohms

S VIDEO OUT (4-pin/mini-DIN jack):

Y: 1 Vp-p, unbalanced, Sync negative, C: 0.286 Vp-p, load impedance 75 ohms

PHONES (stereo minijack):

accepts headphones of 8 ohms or more.

SPEAKER: accepts impedance of 4 to

16 ohms.

CD DIGITAL OUT OPTICAL:

Optical

VIDEO CD/CD player section

System Compact disc and digital audio and

video system

Laser Semiconductor laser (λ = 780 nm)

Emission duration: continuous

Laser output Max. 44.6 mW*

* This output is the value

measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture.

Wavelength 780 – 790 nm Frequency response 2 Hz – 20 kHz (±0.5 dB) Signal-to-noise ratio More than 90 dB Dynamic range More than 90 dB Video color system format

NTSC, PAL

CD DIGITAL OUT OPTICAL (Square optical connector jack, rear panel) Wavelength 666 nm Output Level –18 dBm

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 87.5 – 108.0 MHz

(50 kHz step) Antenna FM lead antenna Antenna terminals 75 ohms unbalanced Intermediate frequency 10.7 MHz

AM tuner section

Tuning range 531 – 1,602 kHz

(with the interval set at 9 kHz) 530 – 1,710 kHz (with the interval set at 10 kHz)

Antenna AM loop antenna

External antenna terminals

Intermediate frequency 450 kHz

General

Power requirements 110 – 120 V or 220 – 240 V AC,

50/60 Hz Adjustable with voltage selector

Power consumption 50 watts Dimensions (w/h/d) Approx. 180 × 130 × 315 mm

incl. projecting parts and controls Mass Approx. 4.0 kg Supplied accessories Remote (1)

Size AA (R6) batteries (2)

AM loop antenna (1)

FM lead antenna (1)

Speaker cords (2)

Video cord (1)

Design and specifications are subject to change without notice.

SERVICE MANUAL

• This set is the Amplifier and VIDEO CD/ CD player section in CMT-VB5.

SPECIFICATIONS

E Model

Model Name Using Similar Mechanism NEW CD Mechanism Type CDM55C-K6BD37A Base Unit Name BU-K6BD37A Optical Pick-up Name KSM-213DCP/Z-NP

MICRO Hi-Fi COMPONENT SYSTEM

TABLE OF CONTENTS

1. GENERAL ·········································································· 3

2. DISASSEMBLY ································································ 5

3. SERVICE MODE······························································8

4. ELECTRICAL ADJUSTMENTS ································· 9

5. DIAGRAMS

5-1. BLOCK DIAGRAM –CD SECTION– ······················· 11

–VIDEO SECTION–··················································· 12 –MAIN SECTION– ···················································· 13

–PANEL/POWER SECTION–···································· 14 5-2. Circuit Boards Location ·············································· 15 5-3. Wa veforms ···································································15 5-4. PRINTED WIRING BOARD –BD SECTION–·······16 5-5. SCHEMATIC DIAGRAM –BD SECTION–············ 17 5-6. PRINTED WIRING BOARDS

–MAIN SECTION– ··················································· 18

5-7. SCHEMATIC DIAGRAM

–MAIN SECTION(1/2)– ··········································· 19

5-8. SCHEMATIC DIAGRAM

–MAIN SECTION(2/2)– ··········································· 20

5-9. PRINTED WIRING BOARDS

–POWER SECTION– ················································ 21

5-10. PRINTED WIRING BOARD

–PANEL SECTION– ················································· 22

5-11. SCHEMATIC DIAGRAM

–PANEL SECTION– ················································· 23

5-12. PRINTED WIRING BOARDS

–VIDEO CD SECTION– ·········································· 24

5-13. SCHEMATIC DIAGRAM

–VIDEO CD SECTION(1/2)– ··································· 25

5-14. SCHEMATIC DIAGRAM

–VIDEO CD SECTION(2/2)– ··································· 26

5-15. SCHEMATIC DIAGRAM

–LOADING SECTION–············································27

5-16. PRINTED WIRING BOARDS

–LOADING SECTION–············································27 5-17. IC Pin Function ·························································· 28 5-18. IC Block Diagrams·····················································32

6. EXPLODED VIEWS ................................................... 34

7. ELECTRICAL PARTS LIST ................................... 39

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

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down 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.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

CAUTION

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

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

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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 .

2

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

LOCATION OF CONTROLS – Front Panel –

1

2 3

SECTION 1

GENERAL

654

9

q;

qh qf

qjqk qg

1 ?/1 button 2 DISPLAY button 3 t indicator 4 SELECT button 5 RETURN button 6 TUNER/BAND button 7 7 button 8 FUNCTION button 9 Z button q; VOLUME knob

qd7qs8qa

qa J L button qs s button qd l j button qf NEXT button qg PHONES jack qh PREV button qj MIC jack qk MIC VOL knob

3

Step 2: Setting the time

You must set the time beforehand to use the timer functions.

`/1

1

DISPLAY

2

4,6

O

X

H

>

x

3,5

m

1

Turn on the system.

.

Mm

4

Press ENTER or M.

The minute indication flashes.

11:00 AM

5

Press ./> to set the minute.

6

Press ENTER.

The clock starts.

If you made a mistake

Press m/M repeatedly until the incorrect item flashes, then set it again.

To change the preset time

You can change the preset time while the system is off.

1 Press DISPLAY to display the clock. 2 Press CLOCK/TIMER SET. 3 Repeat steps 3 to 6 of “Setting the time.”

Tips

• The upper dot of the colon flashes for the first 30 seconds, and the lower dot flashes for the last 30 seconds of each minute.

• Each time you press DISPLAY while the system is off, the display switches between no display and the clock display.

This section is extracted from instruction manual.

2

Press CLOCK/TIMER SET.

The clock appears and the hour indication flashes.

21 :00 AM

3

Press ./> to set the hour.

4

SECTION 2

9

ten screws (BVTP3

×

10)

q;

one screw (BVTP3

×

10)

8

case (left)

2

plate top

5

case (right)

qs

back panel

qa

case (top)

6

two case screws

1

four screws

3

two case screws

4

one screw (BVTP3

×

10)

7

one screw (BVTP3

×

10)

DISASSEMBLY

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

2-1. CASE (TOP)

2-2. FRONT PANEL ASSY

2

connector (CN202)

3

one screw (BVTP3

×

8)

4

lug

5

two screws (BVTP3

1

wire (flat type)(23 core)

×

8)

6

front panel assy

(CN441)

5

2-3. CD MECHANISM DECK (CDM55C-K6BD37A)

4

CD mechanism deck (CDM55C-K6BD37A)

3

screw (BVTP3 × 8)

1

wire (flat type)

(23 core)(CN501)

2

2-4. BASE UNIT (BU-K6BD37A)

2

base unit (BU-K6BD37A)

connector (CN1)

1

floating screw (PTPWHM2.6)

6

2-5. LOADING BOARD

2

belt (CDM55)

B

3

Pull the tray pushing B.

4

two screws (BTP2.6

×

6)

5

LOADING board

1

Rotate the gear(B) in the direction of arrow

A

.

A

)

2-6. CAM (CDM55C-K6BD37A)

1

torsion spring

2

lever (SW)

6

gear (B)

3

spacer (55)

4

pulley (LDG)

5

gear (A)

7

roller

8

cam (CDM55

7

SECTION 3

SERVICE MODE

[Panel T est Mode]

Procedure:

1. Set to standby state.

2. Press three buttons of s , ?/1 , and 7 simultaneously.

3. Liquid crystal display and LED are all turned on.

4. Pless Z to enter the version display mode.

5. Press 7 to enter the KEY, VOL, check mode. ( l j and J L must be pressed for several seconds.)

6. To exit from this mode, press the buttons in the same way as step 2.

[Cold Reset]

Clears all the memories and starts up the machine again.

Procedure:

1. Set to standby state.

2. Press three b uttons of s , ?/1 , and FUNCTION simultaneously.

[Hot Reset]

Starts up the machine again holding the memory data.

Procedure:

1. Set to standby state.

2. Press three buttons of s , ?/1 , and 7 simultaneously.

8

e

TP(TEO) TP(VC)

BD board

Oscilloscope

Level=1.3 ±0.6 Vp-p

Symmetry

A (DC voltage)

Center of waveform

B

0 V

1 track jump waveform

Specified level: × 100 = less than ± 22 %

B

A

SECTION 4

ELECTRICAL ADJUSTMENTS

CD SECTION

Note :

1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

S-Curve Check

Oscilloscope

BD board

TP(FEO) TP(VC)

Procedure :

1. Connect oscilloscope to TP (FEO).

2. Connect between TP (FEI) and TP (VC) by lead wire.

3. Connect between TP (AGCCON) and TP (GND) by lead wire.

4. Turn ?/1 button on.

5. Load a disc (YEDS-18) and actuate the focus search. (In consequence of open and close the disc tray, actuate the focus search)

6. Confirm that the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 4 ±1 Vp-p.

S-curve waveform

Symmetry

Note : Clear RF signal waveform means that the shape “ ◊ ” can be

clearly distinguished at the center of the waveform.

RF signal waveform

VOLT/DIV : 200mV TIME/DIV : 500ns

±

Level : 1.45

0.3Vp-p

E-F Balance (1 Track jump) Check

Procedure :

1. Connect oscilloscope to TP (TEO) and TP (VC).

2. Turned ?/1 button on.

3. Load a disc (YEDS-18) and playback the number five track.

4. Press the 7 button. (Becomes the 1 track jump mode.)

5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.

7. After check, remove the lead wire connected in step 2 and 3.

Note : • Try to measure several times to make sure than the ratio

RF Level Check

Procedure :

1. Connect oscilloscope to TP (RF).

2. Connect between TP (AGCCON) and TP (GND) by lead wire.

3. Turned ?/1 button on.

4. Load a disc (YEDS-18) and playback.

5. Confirm that oscilloscope wavefor m is clear and check RF signal

6. After check, remove the lead wire connected in step 2.

A

Wthin 4

B

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.

Oscilloscop

BD board

TP(RF) TP(VC)

level is correct or not.

±

1Vp-p

6. After check, remove the lead wire connected in step 1.

Adjustment Location:

[BD BOARD] (Conductor Side)

TP (RF)

TP (VC)

TP (AGCCON)

TP (TEO)

IC101

TP (GND)

TP (FE0)

IC103

9

VIDEO SECTION

r

Frequency Adjustment

Connection:

VIDEO board

(27 MHz)

frequency counte

Procedure:

1. Connect the frequency counter to check point of the VIDEO board.

2. Turned ?/1 button 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)

J301

J302

IC507

CN501

SL503

SL502

SL501

CHECK LED

CN502

(27MHz)

(GND)

CT503 VIDEO Frequency Adjustment

CN503

10

5-1. BLOCK DIAGRAM – CD SECTION –

SECTION 5

HCD-VB5

DIAGRAMS

ANTENNA

TUNER UNIT

ST-L

BLOCK

VR

COIL

ST-R

ST DOUT

ST DIN

ST CLK

ST CE

TUNED

STEREO

MUTE

VC

A

B

C

D

E

F

LD

GND

PD

F+

F-

T+

T-

FM

AM

OPTICAL PICK-UP

(KSM-213DCP/Z-NP)

FOCUS

TRACKING

16

+5V

DRIVE

M102 SLED

MOTOR

M101

SPINDLE

MOTOR

STDI STDO

STCK

STCE

TUNED

STEREO

STMT

Q101

LD

IC601 (1/3)

SYSTEM CONTROLLER

54

ST_DIN

53

ST_DOUT

55

ST_CLK

52

ST_CE

51

TUNED

50

STEREO ST_MUTE

49

IIC_DATA

30

29

59

XRST

LOAD_OUT

LOAD_IN

IN_SW

OPEN_SW

MOTOR DRIVER

5

66

6

67

70

71

TUNER-L

R-CH

IC103

RF AMP

12

VC

5

A

6

B

7

C

8

D

11

E

10

F

3

LD

4

PD

MOTOR/COIL DRIVE

14

VO1(+)

13

VO1(-)

12

VO2(+)

11

VO2(-)

15

VO4(+)

RFE

RFO

LD ON

HOLD SW

IC102

OP1(+)

OP1(-)

OP2(+)

OP2(-)

OP4(+)

15

16

RFI

17

14FE

13TE

22

21

2

3

5

6

27

M

16

17

VO4(-)

VO3(+)

OP4(-)

OP3(-)

26

23

A

MAIN

SECTION

(Page 13)

IC101

DIGITAL SERVO

DIGITAL SIGNAL PROC.

D OUT

50

43

39

41

40

33

34

31

32

29

30

25

RFAC

RFDC

FE

TE

SE

FFDR

FRDR

TFDR

TRDR

SFDR

SRDR

MDP

PCMD

BCLK

DATA

CLOK

XLAT

MUTE

SQSO

SQCK

SENS

SCLK

SCOR

XTSL

XRST

STDI STDO

STCK

STCE

TUNED

STEREO

STMT

IC101

CD DIGITAL OUT OPTICAL

CD DATA

CD BCK

CD LRCK

C2PO

MCLK

B

C

I2C-DATA I2C-CLK

XRST

VIDEO

SECTION

(Page 12)

VIDEO

SECTION

(Page 12)

I2C.DATA

I2C.CLK

XRESET

DIGITAL OUT

30

29

12

64

IC501

LEVEL SHIFT

66

67

65LRCK

14C2PO

IC104

S101 LIMIT IN SW

42

95

DSP DATA

5

DSP CLK

97

DSP LATCH

10

DSP MUTE

36

SUBQ DATA

37

SUBQ CLK

1

SENSE

2

SENSE CLK

18

SCOR

11

CTRL1

A+5V

IC502(1/2)

CD MECHA CONT

71XTAI

4

6

5

3

76

77

7

8

15

69

26SSTP

2

R-ch is omitted due to same as L-ch.

Signal path

: FM

: CD

: CD DIGITAL OUT

IC501

2

OUT1

IN1

IN2

OUT2

10

CLOSE

OPEN

S1 LOADING SWITCH

M

M103 LOADING MOTOR

M

18

VO3(-)

STBY1

STBY2

9

20

28

LDON

27

LPH

DEVICE RST

D

VIDEO

SECTION

(Page 12)

1111

HCD-VB5

– VIDEO SECTION –

CD SECTION (Page 11)

DEVICE RST

D

CD DATA/CD BCK/CD LRCK/C2PO

B

16

IC502(2/2)

CD MECHA CONT

CHROMA LEVEL

BGP

DEVICE RESET

DATA1 I

DATA1 O

DF LATCH

CLK1

CL680 HINT

CL680 HSEL

CL680 HRDY

680 RESET

XIN

XOUT

26

65V MUTE

77

32

31

22

33

25H SYNC IN

45V SYNC

20

21

23

24

15

13

+5V

IC303 Y AMP

3RESOLUTION

L.P.F

4

Q501

BUFFER

Q502

BUFFER

X501

10MHz

Q531

+3.3V REG

+3.3V

(IC505 VDD)

IC301

11 10

IC505

MPEG VIDEO/AUDIO DEC

VIDEO SIGNAL PROC

4

3

5

6

112

119

117

101

93

114

121

113

60

CD DATA

CD BCK

CD LRCK

CD C2PO

HD OUT

HD IN

HCK

H SYNC

V SYNC

HINT

HSEL

HRDY

RESET

DA DATA

DA LRCK

DA XCLK

Y OUT

C OUT

DA BCK

VCK IN

MD0

MD15

MA0

MA10

RAS0

CAS

MWE

MCE

L.P.F

IC509

DIGITAL FILTER

D/A CONV

10

RSTB

9

MD

V OUT L

V OUT R

IC507 DRAM

A0

A8

RAS

UCAS

LCAS

WE

IC506

A0

A10

CE

DQ1

DQ16

O0

O7

A11

A17

XT1

XT2

ı

14

11

R-CH

1

X503

27MHz

24

2 5

.

7

10

.

31

34

.

36

39

13 15

.

17

21

.

25

.

4

.

28

.

29

.

3

.

2

.

30

8

MC

7

ML

69

75

110

111

108

86

106

10 15

.

17

.

19

.

21

.

23

29

58

56

.

54

.

52

50

.

48

.

46

44

42

40

38

37

IC504

27MHz

18

DATA

17

BCK

19

LRCK

20

384FSO

4

MCKO

16

19

.

22

26

14

28

29

13

MICROCODE ROM

12

5

.

27

.

26

.

23

22

5

CCT

VIN

IC302 C AMP

TINT

BGP

VIN

L.P.F

IC101

VOUT

1VOUT

6

75

10

8

5

1

2

7

1

8

Y IN

C IN

MUTE A

MUTE B

IC304

VIDEO AMP

C OUT

15Y OUT1

14Y OUT2

9

12MIX OUT1

11MIX OUT2

Y

2

4

3

1

C

J301

S VIDEO

OUT

J302

VIDEO

OUT

CD-L

MCLK

• R-ch is omitted due to same as L-ch.

• Signal Path

: CD

: VIDEO

MAIN

E

SECTION (Page 13)

CD

C

SECTION (Page 11)

1212

– MAIN SECTION –

HCD-VB5

R-ch is omitted due to same as L-ch.

Signal path

: FM

: CD

MD/VIDEO

(AUDIO)

OUT

IC201

INPUT SELECT

VOLUME/TONE CONTROL

CD

SECTION

(Page 11)

SECTION

(Page 12)

J101

L

IN

R

L

R

VIDEO

R-CH

A

E

Q204

MUTE

Q203

BUFFER

1

IC202

AMP

TUNER-L

CD-L

3

L2

13

TUNER

L1

14

CD

5

LOUT

L3

12

VIDEO

L4

11

MD

Q201

MUTE

+

10

LSELO

9

LIN

Q202

BUFFER

1

DI

30

CL

2

CE

R-CH MUTE

IC301

POWER AMP (2CH)

+INA

8

STANDBYA

9 6

OUTA

MUTEA

RY301

3

Q324

RELAY

DRIVER

IC670(2/2)

MIC AMP

+

R-CH

RV701

MIC VOL

Q322,Q323

PROTECTION

DETECT

IC670(1/2)

MIC AMP

R-CH

: MD IN

: MIC

J301

+

J701

J702

L

SPEAKER

R

PHONES

MIC

X601 X602

38

42

RECOUT_MUTE

16

48

47

VOL_LAT

VOL_CLK

VOL_DATA

27

PRE_MUTE

45

AMP_STANDBY

IC601 (2/3)

SYSTEM CONTROLLER

44

AMP_MUTE

11

10

XCIN

XCOUT

13

15

XIN

XOUT

SPEAKER_RELAY

43

H.PHONE_DETECT

1313

HCD-VB5

– PANEL/POWER SECTION –

IC601 (3/3)

SYSTEM CONTROLLER

FLUORESCENT INDICATOR TUBE

FL801

VCC

S812-814

FUNCTION

KEY

S807-811

FUNCTION

KEY

S802-806

FUNCTION

KEY

S801

VOLUME

IC801

REMOTE CONTROL RECEIVER

OUT

VF0

IC802

63

62

61

60

56

FL DRIVER

DAT

CLK

CS

RST

VFL

DRIVER

Q801

LED

Q802

LED

Q804

LED

Q806

LED

Q807

LED

S1

S35

G1

G11

G12

5

ı

39

40

ı

50

51

D801

D802

D803-804

Q551

RESET

SWITCH

D805

D806

89

KEY0

35

FL_DATA

FL_CLK

37

36

FL_CS

28

FL_RST

90

KEY1

VCD_LED

AC_CUT

RESET

STBY_LED

23

24

26

5

22

12

40

39

PBC/CDTEXT_LED

91

KEY2

ENC_A

86

ENC_B

87

SIRCS

8832

PANEL_LED

CD_POWER

TIMER_LED

Q805

SWITCH

+5V

PBC

VCD

(BACK LIGHT)

VF1

Q4

BUFFER

TUNER

+10V

IC201 IC202

+5V

+7V

CD A+5V

CD D+5V

IC551

RESET

3 1

(IC601 VCC) +5V

(IC601 VDD) +5V

-VG

3 1

D551

D552

IC1

+5V REG

IC2

+7V

REG

Q2-3 +5V REG

3

IC3

-32V 1

REG

Q1

+10V

REG

IC4

+5.6V

3 1

REG

POWER

AMP

T1

VF0

VF1

D14-15

D2

+B

-B

S1

VOLTAGE

SELECTOR

220-240V 110-120V

D6-9

D55-56

F1

AC

IN

16

+5V(UNSW)

1414

HCD-VB5

1 IC601 qa

STOP MODE

3.0Vp-p

32.768kHz

3.4Vp-p

2 IC601 qd

STOP MODE

16MHz

4

J301 3 (COUT)

9

IC505 (VCK-IN)

7

IC505 od (VSYNC)

8

IC505 (HSYNC)

3

J301 4 (YOUT)

1

IC502 qd (XOUT)

37 nsec

4.6 Vp-p

10 MHz

3.5 Vp-p

20 ms

3.2 Vp-p

64 µs

2.0 Vp-p

H

2.0 Vp-p

5.4 Vp-p

101

106

2

IC502 wh (BGP)

5

J302 (VIDEO OUT)

6

IC505 ih (DA-XCLK)

3.6 Vp-p

17 MHz

q;

IC505 (DA-LRCK)

108

qa

IC505 (DA-BCK)

111

qs

IC509 w; (384FSO)

qd

IC509 wf (XT2)

qf

IC509 4 (MCKO)

4.5 Vp-p

H

1.3 Vp-p

H

4.5 Vp-p

22.7

µ

s

4.5 Vp-p

472 ns

5.0 Vp-p

59 ns

2.0 Vp-p

37 ns

5.2 Vp-p

37 ns

d

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

• X : parts extracted from the component side.

f

•

• b : Pattern from the side which enables seeing.

Caution: Pattern face side: Parts on the pattern face side seen from (Side B) the pattern face are indicated. Parts face side: Parts on the par ts face side seen from (Side A) the parts face are indicated.

• Indication of transisitor.

: internal component.

Q

B

CE

These are omitted.

Q

B

CE

These are omitted.

C Q

B

E

These are omitted.

Note on Schematic Diagram:

• 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.

f

•

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• Voltages are taken with a VOM (Input impedance 10 MΩ).

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

: internal component.

with mark 0 are critical for safety. Replace only with part number specified.

Voltage variations may be noted due to normal production tolerances. no mark : FM < > : CD

Voltage variations may be noted due to normal production tolerances.

F : TUNER (FM/AM) L : MD/VIDEO g : MIC J : CD PLAY (ANALOG OUT) c : CD PLAY (DIGITAL OUT)

4

W or less unless otherwise

5-3. Waveforms

– MAIN BOARD –

– BD SECTION –

1

IC101 t;

(RFAC)(CD Play mode)

1.3 Vp-p

2

IC101 ra

(TE)(CD Play mode)

0.5 Vp-p

3

IC101 el

(FE)(CD Play mode)

0.2 Vp-p

4

IC101 wg (MDP)

2.6 Vp-p

• Semiconductor Location (MAIN BOARD)

Ref. No. Location

D2 D-7 D3 B-8 D4 C-5 D5 C-3 D6 F-7 D7 F-6 D8 E-7 D9 F-7 D10 G-4 D14 D-6 D15 D-6 D16 D-6 D21 G-5 D321 D-10 D501 B-1 D551 F-5 D552 F-5 D553 F-6 D554 G-3 D555 E-6 D556 E-6 D601 D-4

Ref. No. Location

IC1 G-3 IC2 G-6 IC3 E-6 IC4 F-5 IC201 C-3 IC202 C-2 IC301 D-9 IC501 B-1 IC551 G-4 IC601 E-4

Q1 B-8 Q2 G-5 Q3 G-4 Q4 G-4 Q201 C-7 Q202 D-4 Q203 D-4 Q204 D-5 Q251 C-7 Q254 D-5 Q322 D-10 Q323 D-10 Q324 D-10 Q551 G-3

5-2. CIRCUIT BOARDS LOCATION

PANEL board

MIC/PC MIX board

TUNER (FM/AM)

LED board

BACK PANEL board

VIDEO boar

–VIDEO SECTION –

15.1

µ

s

LOADING board

MAIN board

BD board

1515