Sony HCDXB-8-KW Service manual

HCD-XB8KW

MICROFILM

SERVICE MANUAL

HCD-XB8KW is the tuner, deck, CD and
amplifier section in LBT-XB8AVKR.

Model Name Using Similar Mechanism HCD-XB8K

This unit is similar to the HCD-XB8K. F or details
not provided in this manual, refer to the service
manual (9-960-942- ) for the HCD-XB8K
already issued.

CD

SECTION

T APE

DECK

SECTION

SPECIFICA TIONS

CD Mechanism Type CDM37L-5BD29AL
Base Unit Type BU-5BD29AL
Optical Pick-up Type KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-XB8K
T ape T r ansport Mechanism T ype TCM-220WR2

Thai Model

— Continued on next page —

COMPACT DISC DECK RECEIVER

– 1 –

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
repain 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.

LASER DIODE AND FOCUS SEARCH OPERATION
CHECK

Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output three times.

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra­diation 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 radiation
exceeding the limit for Class 1.

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

This caution
label is located
inside the unit.

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.

– 2 –

SERVICING NOTE

• How to Use this Manual

This unit is similar to the HCD-XB8K. For the following details, refer to the service manual (9-960-942- ) for the HCD-XB8K already
issued.

[Table of Reference Items]

Item

DISASSEMBLY

TAPE MECHANISM DECK 6
CASSETTE LID ASSEMBLY 7
CD LID ASSEMBLY 7
CD MECHANISM DECK 8
BASE UNIT 8
DISC TABLE 8

SERVICE MODE 9

MECHANICAL ADJUSTMENT 11

ELECTRICAL ADJUSTMENT

DECK SECTION 11
CD SECTION 14

DIAGRAMS

BLOCK DIAGRAMS

• CD SECTION 17

• DECK SECTION 19
PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS

• CD SECTION 25 to 29

• DECK SECTION 37 to 42

• CD MOTOR SECTION 58 to 60
IC BLOCK DIAGRAMS

• CD SECTION 63

• CD MOTOR SECTION 67

DECK SECTION 67

IC PIN FUNCTIONS

• CD SECTION 69 to 73

HCD-XB8K

Reference Page

Item

EXPLODED VIEWS

TC MECHANISM SECTION 1

(TCM-220WR2) 82

TC MECHANISM SECTION 2

(TCM-220WR2) 83

TC MECHANISM SECTION 3

(TCM-220WR2) 84

CD MECHANISM SECTION

(CDM37L-5BD29AL) 85

BASE UNIT SECTION

(BU-5BD29AL) 86

ELECTRICAL PARTS LIST

AUDIO board 87
BD board 88
CD MOTOR board 90
LEAF SWITCH board 92
LED board 92
TABLE SENSOR board 101

HCD-XB8K

Reference Page

– 3 –

TABLE OF CONTENTS

1. GENERAL ..........................................................................4

2. DISASSEMBLY

2-1. Front Panel ........................................................................... 6

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

3. DIAGRAMS

3-1. Circuit Boards Location ........................................................7

3-2. Block Diagrams

• KEY CON Section............................................................. 8

• Main Section ......................................................................9

• Power Section .................................................................. 11

3-3. Schematic Diagram — Main Section (2/2) — .................... 13

3-4. Printed Wiring Board — Main Section —.......................... 17

3-5. Schematic Diagram — Main Section (1/2) — .................... 19

3-6. Schematic Diagram — Panel Section — ............................ 23

3-7. Printed Wiring Board — Panel Section — ......................... 27

3-8. Schematic Diagram — Power Section — ........................... 31

3-9. Printed Wiring Board — Power Section — ........................ 35

3-10. Printed Wiring Board — Sub Amp Section —................. 38

3-11. Schematic Diagram — Sub Amp Section — ................... 41

3-12. Printed Wiring Board — KEY CON Section — .............. 44

3-13. Schematic Diagram — KEY CON Section —................. 45

3-14. IC Block Diagrams........................................................... 46

3-15. IC Pin Functions............................................................... 49

4. EXPLODED VIEWS

4-1. Case and Back Panel Section .............................................. 52

4-2. Front Panel Section 1 .......................................................... 53

4-3. Front Panel Section 2 .......................................................... 54

4-4. Chassis Section ................................................................... 55

5. ELECTRICAL PARTS LIST ........................................56

Location of Parts and Controls

1 POWER button
2 REC button
3 t/CLOCK SET button
4 DAILY 1 button
5 DAILY 2 button
6 SLEEP button
7 DISPLAY/DEMO button
8 SPECTRUM ANAL YZER button
9 Display Window
!º ENTER/NEXT button
!¡ TUNER MEMORY button
!™ TUNING MODE button
!£ TUNER/BAND button
!¢ TUNING (+/-) button
!∞ ECHO LEVEL knob
!§ STEREO/MONO button
!¶ Equalizer indicators
!• MIC LEVEL knob
!ª MIC 1, MIC 2 jacks
@º DSP button
@¡ WAVE button
@™ PROLOGIC button

SECTION 1

GENERAL

@£ KARAOKE PON/MPX button
@¢ P FILE MEMORY button
@∞ PHONES jack
@§ EFFECT button
@¶ FUNCTION button
@• GROOVE button
@ª VOLUME control
#º SUPER TWEETER button
#¡ GEQ control buttons
#™ GEQ CONTROL button
#£ DBFB button
#¢ ENTER button
#∞ Deck A ª, · button
#§ Deck A p button
#¶ DIRECTION button
#• DOLBY NR button
#ª Deck A 0, ) button
$º Deck A 6 EJECT button
$¡ Deck B p button
$™ Deck B ª, · button
$£ Deck B 0, ) button
$¢ Deck B r REC button

$∞ Deck B P button
$§ CD SYNC button
$¶ H SPEED DUB button
$• Deck B 6 EJECT button
$ª 6 OPEN button
%º CD · button
%¡ CD p button
%™ CD P button
%£ DISC SKIP button
%¢ DISC1-DISC5 buttons
%∞ NON-STOP button
%§ LOOP button
%¶ FLASH button
%• 1/ALL DISCS button
%ª PLAY MODE button
^º CD 0, ) button
^¡ REPEAT button
^™ EDIT button
^£ ≠ AMS ± dial
^¢ ˜ button
^∞ KEY CONTROL indicator
^§ # button

– 4 –

Front Panel

2
3
4

5

6

!•
!ª

!∞
@∞

#∞
#§

17 8 9

@¡ @º

@£

^¢ ^∞ ^§

!¶

@¢

@™

#¢

!º !¡ !™ !£

@§

#¡

#™

@•

!¢

!§

@¶
@ª
#º

#£

$™

$£

#¶
#•

$º

%¢
%∞

%§

#ª

$¡ $¶

$¢
$∞
$§

$•

$ª

%º
%¡

%™

%£

^º

%• %ª

^¡

%¶

^™ ^£

– 5 –

SECTION 2

)

DISASSEMBLY

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

2-1. FRONT PANEL

1

Three flat type wiers

(CN401,CN402,CN701)

3

Wire

4

Front panel

(Remove the solder)

2-2. MAIN BOARD

9

Connector (CN3107)

4

8

Connector (CN601)

2

Connector (CN601)

Power cord

2

Four screws (BVTP3x8)

5

Back panel

3

Twelve screws (BVTP3x8)

1

Flat type wire (CN1)

!™

!£

Main board

Connector (CN961

6

Flat type wire (CN801)

– 6 –

!¡

Connector (CN201)

0

Two screws (BVTP3x8)

7

Connector (CN830)

SECTION 3

d

DIAGRAMS

HCD-XB8KW

3-1. CIRCUIT BOARDS LOCATION

PANEL board

HP/MIC board

TC-A SW board

CD-LED board

CD-A SW board

TRANS board

SPEAKER TERMINAL board

FM/AM TUNER PACK

KEY CON board

SUB AMP board

MAIN board

3-2. BLOCK DIAGRAMS

— KEY CON SECTION —

J761

MIC 1

J762

MIC 2

MIC AMP

IC760 (1/2)

31

RV760

MIC LEVEL

1

LPF1

ECHO AMP
IC760 (2/2)

67

ECHO
IC761

9

2

LPF2

8

RV761

ECHO LEVEL

DOOR SW board

TC-B SW board

Note: pA is including in AUDIO board.

AUDIO board
(including

TABLE SENSOR board

CD-B2 SW board

p

A)

CD-B1 SW board

p

A

MOTOR board

POWER board

SWITCH

IC1403

5

3

KEY CONTROL

IC1401

LPF1

IN

22

MIX
OUT

15

91011

Q1401

4

LEAF SWITCH boar

Rch

DATA

CLOCK

STORBE

9

78

BD board

L IN

K CON

LATCH
CLK
DATA

A

MAIN

SECTION

(Page 9)

CD MOTOR board

– 7 –

LED board

L OUT

09

• R CH : Same as Lch

• Signal path
: FM
: MIC

– 8 –

HCD-XB8KW

— MAIN SECTION —

KEY CON
SECTION

A

(Page 8)

J101

PHONO

IN

L

J101

VIDEO

(AUDIO)

IN

L

RELAY REC/PB

B

DECK

SECTION

HCD-XB8K

SERVICE MANUAL

BIAS ON/OFF

Page 20

REC/PB PASS

CAP M ON/OFF

FM/AM

TUNER PACK

ENCAPSLATED

COMPONENT

C

CD

SECTION

HCD-XB8K

SERVICE MANUAL

Page 18

09

L IN

DATA

CLK

LATCH

K CON
L OUT

PB L

REC L

A SHUT
B SHUT

B HALF
A HALF
A PLAY
B PLAY

PB A / B

NORM/HIGH

RM ON/OFF
NR ON/OFF

LM ON/OFF

CAP M H/L

A TRG
B TRG

TRIG H/L

ST L

COM DIN

COM DATA

STEREO

TUNED

ST CE
MUTE

L CH

TBL. L
TBL. R

SCOR

T. SENS

SENS 2

SENS
X RST

CD CLK

CD DATA

UP SW

SQ CLK

SQ DATA

X LAT

3
4
5
6

31

PHONO EQ AMP

IC101

MUTE

Q121

V

TC

ST

CD

INPUT SELECT

IC102

1
2
4
5

MUTE

CONTROL

Q123,124

(DISC No.)

INH

D201

3

A

10

9

B

6

1
2
3
4

5
6

D+5V

– 9 –

Q201

INPUT SELECT

3
5

96

RELAY

26

A SHUT

27

B SHUT

28

B HALF

97

A HALF

94

A PLAY SW

95

B PLAY SW

87

PB A/B

88

EQ H//N

89

BIAS

90

REC MUTE

91

NR ON/OFF
R/P PASS

92

TC MUTE

93
82

CAP H/N

83

A TRG

84

B TRG

85

TRG LOW

86

CAP M ON/OFF

41

VOL LAT

42

PL LAT

44

COM DOUT

45

COM CLK

66

ST DIN

70

STEREO
TUNED

69
68

ST CE

72

ST MUTE

67

ST DOUT

4

K CON LAT

5

K CON ON

60

TBL L

61

TBL R

SCOR

18
76

T SENS

73

SENS 2

74

SENS

57

XRST

48

CD CLK

47

CD DATA

77

UP SW

36

SQ CLK

34

SQ DATA IN

58

XLT

62

TRAY LED

IC103

4

9
10
11

DOLBY PRO LOGIC

9

L-IN

3

41

DATA

4

42

CLK

2

40

EN

69
71

28
29
30

54

INPUT CHANGE

MASTER CONTROL

IC601

IC701

C-OUT
S-OUT
L-OUT

34
35
37

MICON

INTERFACE

32 33

3

4

427 LAT

REAR

FRONT

34

LATCH

3

CENTER

65 64

3
4

2

10

S-IN

8

L-IN

3

DATA

2

CLK

4

EN

DBFB H/L
TA MUTE

IIC DATA

CD POWER

STK MUTE

DELAY
IC602

POWER

R RELAY

IIC CLK

RESET

AC CUT

XT1

XT2

S-OUT

FRONT

X1

X2

L-MIX

OUT

XTAL

XTAL

61

REC 2A

62

98

2
1
7

55
56

15

20

11

10

14

13

46

100

13

16
23
24

EQ

D951

FRONT

RESET

SWITCH

Q951

RESET

IC951

+5V

X701

5MHz

X702

32.768KHz

SWITCH

X601
8MHz

MUTE
Q912

X601

8MHz

45 44 43 42

EQUALIZER / VOLUME

IC201

DATA

28

CLOCK

27

14

RESET

12

XOUT

13

XIN

SEG1-35
67 - 100 • 1

FLUORESCENT INDICATOR TUBE

+ +

DISPLAY CONTROL

IC601

GR1-16
51 - 66

FL601

REAR

CENTER

6
5

LED1

LED18

LED SELECT

SIRCS
SPEANA 1
SPEANA 2
SPEANA 3
SPEANA 4

JOG A
JOG B

DOOR SW

VOL A
VOL B

VF

AMP

IC861

BB22

40 41

DBFB

SWITCH

Q201

L+R

KEY 5
KEY 1

3
5

BB12

3

10

•

15

•

16

•

18

23

•

25

•

47
29

39
42
43
44
45
46
26
41

37
33

38

24
40

IC603

AMP

7

38

1
7

FRONT

DBFB

SWITCH

Q202

LED

SWITCH

D/A

– 10 –

S701

VOLUME
ROTARY

ENCODER

3

IN

14

IN

4

8

CLK

3

9

DATA

1

10

PANEL LED

LED

CONTROL

Q601

REMOTE

CONTROL

RECEIVER

IC602

S711

= AMS +

ROTARY

ENCODER

KEY

MATRIX

S681

6

OPEN

VOLUME

IC604

MUTE

Q254

MUTE

SWITCH

Q120

OUT

OUTLATCH

Q602

MUTE

15

Q601

Q602,603

MUTE

2

• R CH: Same as L ch

• SIGNAL PATH
: FM
: CD
: PB
: REC
: VIDEO

REAR

CENTER

FRONT

DBFB

POWER ON/OFF

R RELAY

ST SW

D+5V

CD POWER

STK MUTE

REAR

CENTER

D

POWER

SECTION

(Page 11)

HCD-XB8KW

— POWER SECTION —

REAR

CENTER

FRONT

S. TWEETER

IC3101, 3102

D

MAIN

SECTION

(Page 10)

09

ST SW

DBFB

STK MUTE

R RELAY

CD POWER

POWER ON/OFF

GAIN
AMP

S. TWEETER

CONTROL

Q3105-3107

FRONT

SW

S. TWEETER

GAIN

CONTROL

Q3101

POWER AMP

IC201

1 10

6

AU/D5V SW

D5V

SW

Rch

REAR

CENTER

Rch

+5V REG

THERMAL

DET

Q670,671

THP670

OVER LOAD

D5V

SWITCHED

CD REG

Q904

Q906

DET

Q201

Q905

Q907

OVER LOAD

MUTE

SWITCH

Q331

18

1

DET

Q601,651

POWER AMP
IC601

13

10

6

Rch

+5V

D905

D7V

A+7.5V

A–7.5V

+12V

ST10V

PRO-LOG 10V

Q323

Rch

+7.5

1

–7.5 EN

10

+5V REG

IC902

3 1

+7V REG

IC903

3 1

+7V, –7V REG

IC901

4

+12V REG

IC904

3 1

3 1

+10V REG

IC905

2

1

Q901

RY401

RY402

6

PROTECTOR

PROTECT

SWITCH

V

CC

2

9

V

EE

POWER B+
POWER B–

–2

IC301

7

Q301

UNREG

–12V

SURR B+

SURR B–

TM402

SURROUND

SPEAKER

IC3103
3

2

T501

POWER

M

1

+
–

S. WOOFER

GAIN CONTROL

Q3104

TM401
FRONT

SPEAKER

J760

PHONES

UNREG
–12V

S. WOOFER PRE AMP

TRANSFORMER

REAR

CENTER

M901

FAN

MOTOR

Rch

S. WOOFER

PRE AMP

IC3003

5

IN OUT

AC

IN

Rch

S. WOOFER

MAIN AMP

IC3001

1

1

13

2

OVER LOAD

DET

Q3001, 3002

1

PROTECTOR

PROTECTOR

7

SWITCH

Q3109

IC3002

RY3001

6

4

RELAY
DRIVE

Q3108, 3111

J3201

WOOFER
SYSTEM

+B

• R CH : Same as L ch

• SIGNAL PATH
: FM
: SUPER WOOFER

CENTER

FAN MOTOR

DRIVER

Q961, 962

RECT

D104,105

REAR

FRONT

Rch

VF

VF

–1

RELAY

DRIVE
Q404

Rch

–1

RELAY

DRIVE

Q403

RELAY

CONTROL

Q402

HP / SP

SWITCHING

4

RECT
D901

RECT
D101

RECT
D102

Q401,405

VFDP

RECT

D302,303

VF REG

Q941

– 11 –

– 12 –