AVD-K800P, HT-C800DP - Sony Audio Service Manual (repair manual). Page 4

4

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2-1. Case ··············································································· 7
2-2. Loading (PANEL) ························································· 8
2-3. CD Mechanism Deck (CDM79-DVBU22) ··················· 8
2-4. Front Panel Assy ···························································· 9
2-5. DISPLAY Board, OPEN/CLOSE Board,

POWER SWITCH Board, HP Board ···························· 9

2-6. Tuner Unit (TM301), I/O Board ·································· 10
2-7. DMB03 Board ····························································· 10
2-8. DC Fan (FAN1) ··························································· 11
2-9. MAIN Board ······························································· 11
2-10. Table Assy ··································································· 12
2-11. SE-130 Board ······························································ 13
2-12. DC Motor (M001) ······················································· 14
2-13. Pickup Unit Section ····················································· 14
2-14. RF Board ····································································· 15

··································································· 16

4-1. Circuit Board Location ················································ 25
4-2. Block Diagrams

— RF SERVO Section — ··········································· 26
— VIDEO Section — ·················································· 27
— AUDIO Section — ················································· 28
— AMP Section — ····················································· 29
— POWER Section — ················································ 30

4-3. Printed Wiring Board — RF Section — ······················ 31
4-4. Schematic Diagram — RF Section — ························ 32
4-5. Printed Wiring Board — DMB Section (SIDE A) — · 33
4-6. Printed Wiring Board — DMB Section (SIDE B) — · 34
4-7. Schematic Diagram — DMB Section (1/8) — ··········· 35
4-8. Schematic Diagram — DMB Section (2/8) — ··········· 36
4-9. Schematic Diagram — DMB Section (3/8) — ··········· 37
4-10. Schematic Diagram — DMB Section (4/8) — ··········· 38
4-11. Schematic Diagram — DMB Section (5/8) — ··········· 39
4-12. Schematic Diagram — DMB Section (6/8) — ··········· 40
4-13. Schematic Diagram — DMB Section (7/8) — ··········· 41
4-14. Schematic Diagram — DMB Section (8/8) — ··········· 42
4-15. Printed Wiring Board — I/O Section — ····················· 43
4-16. Schematic Diagram — I/O Section — ························ 44
4-17. Printed Wiring Board — MAIN Section — ················ 45
4-18. Schematic Diagram — MAIN Section (1/3) — ·········· 46
4-19. Schematic Diagram — MAIN Section (2/3) — ·········· 47
4-20. Schematic Diagram — MAIN Section (3/3) — ·········· 48
4-21. Printed Wiring Board

— VOLTAGE SELECTOR, LOADING Section — ··· 49

4-22. Schematic Diagram — LOADING Section — ··········· 50
4-23. Printed Wiring Board — DISPLAY Section — ·········· 51
4-24. Schematic Diagram — DISPLAY Section — ············· 52
4-25. IC Block Diagrams ····················································· 54
4-26. IC Pin Function Description ······································· 61

5-1. Case Section ································································ 70
5-2. Front Panel Section ····················································· 71
5-3. Chassis Section ···························································· 72
5-4. CD Mechanism Deck Section-1 (CDM79-DVBU22) · 73
5-5. CD Mechanism Deck Section-2 (CDM79-DVBU22) · 74

······································· 75

If a DMB03 board is exchanged, “DRIVE AUTO ADJUSTMENT”
may be unable to be performed. In this case, initialize a memory in
the following procedure.

1. Starting Test  Mode (see page 17).
2. Press the 2  button of remote commander to set the Drive

Manual Operation (see page 19).

3. Press the 6 button of remote commander to set the Memory

Check (see page 21).

4. Press the [CLEAR] button of remote commander to initialize

a memory.

After parts related to the servo circuit (RF amplifier (IC001), DSP
(IC509), motor driver (IC501), EEPROM (IC903) so on) are
replaced, re-adjusting the servo circuit is necessary. Select “ALL”
at  “1. DRIVE AUTO ADJUSTMENT” (Refer to page 18 in TEST
MODE) and adjust DVD-SL (single layer), CD and DVD-DL (dual
layer).

Perform a RFMON level check before exchanging optical pick-up.

Measurement Point: DMB03 board CN501

13pin (RFMON) — 29pin (AGND)

       RFMON signal waveform

• Standard value

DVD

TDV-520CSO

1.09 

± 0.2Vp-p

(J-2501-236-A)

CD

LUV-P01

1.05 

± 0.2Vp-p

(4-999-032-01)

VOLT/DIV: 200 mV
TIME/DIV: 500 ns 

RFMON level