HCD-G1, LBT-G1, LBT-G1R, LBT-G1S - Sony Audio Service Manual (repair manual)

— 1 —

Model Name Using Similar Mechanism

NEW

CD Mechanism Type

CX3

Base Unit Type

KSM-213BCM

Optical Pick-up Type

KSS-213B/S-N

Model Name Using Similar Mechanism

HCD-H100

TK20FX-SW943-800

TK20FX-SW943-800

CD

SECTION

AEP Model

UK Model

E Model

DECK-A

DECK-B

TAPE

DECK

SECTION

Tape Transport
Mechanism Type

HCD-G1 is the tuner, deck, CD and
amplifier section in LBT-G1/G1S.

2002C0200-1

© 2002.03

— 2 —

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 PROD-
UCT MARKING is located on
the rear exterior.

This caution
label is located
inside the unit.

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

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be

 damaged by heat.

• 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.

!

!

— 3 —

.......................................................................... 4

2-1. CD Door ............................................................................... 5
2-2. Back Panel ............................................................................ 5
2-3. CD Mechanism Deck ............................................................ 6
2-4. Front Panel and Main Board ................................................. 6
2-5. CD Tray ................................................................................ 7
2-6. CD Decoder Board ................................................................ 7
2-7. Base Unit .............................................................................. 8

................................ 9

................................. 9

5-1. Circuit Boards Location ...................................................... 14
5-2. Block Diagrams

• Tuner Section (E, AR, MX models) ................................. 15
• Tuner Section (AEP, UK models) .................................... 17
• CD Section ....................................................................... 19
• Deck Section .................................................................... 21
• Main Section (E, AR, MX models) ................................. 23
• Main Section (AEP, UK models) ..................................... 25
• Power Section (E, AR, MX models) ................................ 27
• Power Section (AEP, UK models) ................................... 28

5-3. IC Block Diagrams .............................................................. 29
5-4. Printed Wiring Board —Main Section —

(E, AR, MX models) ........................................................... 34

5-5. Schematic Diagram — Main Section —

(E, AR, MX models) ........................................................... 39

5-6. Schematic Diagram — Main Section —

(AEP, UK models) .............................................................. 43

5-7. Printed Wiring Board —Main Section —

(AEP, UK models) .............................................................. 47

5-8. Printed Wiring Board — CD Section — ............................. 52
5-9. Schematic Diagram — CD Section — ............................... 57
5-10. Schematic Diagram — Panel Section — ......................... 61
5-11. Printed Wiring Board — Panel Section — ....................... 65
5-12. Printed Wiring Board — Tuner Section —

(E, AR, MX models) ......................................................... 71

5-13. Schematic Diagram — Tuner Section —

(E, AR, MX models) ......................................................... 75

5-14. Schematic Diagram — Tuner Section —

(AEP, UK models) ............................................................ 79

5-15. Printed Wiring Board — Tuner Section —

(AEP, UK models) ............................................................ 83

5-16. IC Pin Function ................................................................ 87

6-1. Case and Back Panel ........................................................... 89
6-2. Front Panel Section ............................................................. 90
6-3. Cassette Mechanism Deck Section 1 .................................. 91
6-4. Cassette Mechanism Deck Section 2 .................................. 92
6-5. CD Mechanism Deck Section 1 .......................................... 93
6-6. CD Mechanism Deck Section 2 .......................................... 94
6-7. Base Unit Section (KSM-213BCM) ................................... 95

........................................ 96

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.

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 pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.

AEP model

UK model

Mexican model (Without voltage selector)
E, Argentine model (With voltage selector)

• Abbreviation

AR

: Argentine model

MX : Mexican model

— 4 —

1

2

3

4

6

5

7

8

9

!¡

!™

!£

!¢

!∞ !§ !¶ !• !ª

@º @¡ @™

@¢ @∞

@¶

@§

@•

@ª

#º

#¡

#™

1 Disc tray
2 DISC 1 button
3 DISC 2 button
4 DISC 3 button
5 § OPEN/CLOSE button

6 DISC SKIP button
7 VOLUME knob
8 CLOCK SET button
9 TIMER SET, CLOCK LIGHT button
!º TIMER MODE button
!¡ Display window
!™ Remote sensor
!£ POWER button
!¢ PHONES jack
!∞ p (stop) button

!§  P (play/pause) button

!¶ SHUFFLE buttom
!• PROGRAM button
!ª REPEAT button
@º CD button
@¡ TAPE button
@™ PHONO button
@£ TUNER/BAND button
@¢ PRESET – button
@∞ PRESET + button
@§ MEMORY button
@¶ – TUNING +/≠ 0/

) ± buttons

@• DBFB button
@ª PRESET EQ button
#º Deck B
#¡ Tape operating buttons

r (recording) (for deck A only)
· (play)
0 (fast rewind)
) (fast forward)
p6 (stop/eject)
P (pause)

#™ Deck A

¢

@£

!º