Sony STR-DA4400ES, Руководство по обслуживанию

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STR-DA4400ES
2
1. SERVICING NOTES
............................................. 4
2. GENERAL
.................................................................. 9
3. DISASSEMBLY
3-1. Disassembly Flow .......................................................... 14
3-2. Case
................................................................................ 15
3-3. SP-TM Board, Tuner (FM/AM) ..................................... 15
3-4. D-CONNECT Board, DSP Board, DIGITAL Board,
CIS Board and CONTROL Board .................................. 16
3-5. D-VIDEO Board ............................................................ 16
3-6. Front Panel Block ........................................................... 17
3-7. S-VIDEO Board and A-VIDEO Board .......................... 17
3-8. FLI-1.8REG Board and ANALOG Board ...................... 18
3-9. Power Transformer (T001), E-VOL Board and
MAIN Board ................................................................. 19
3-10. Heat Sink Block ............................................................. 20
4. TEST MODE
............................................................ 21
5. ELECTRICAL ADJUSTMENTS
........................ 26
6. DIAGRAMS
6-1. Block Diagram - CONTROL Section -........................... 27
6-2. Block Diagram - DSP Section - ...................................... 28
6-3. Block Diagram - DIGITAL AUDIO Section - ................ 29
6-4. Block Diagram - HDMI Section (1/2) - .......................... 30
6-5. Block Diagram - HDMI Section (2/2) - .......................... 31
6-6. Block Diagram - VIDEO PROCESS Section -............... 32
6-7. Block Diagram - ANALOG AUDIO Section - ............... 33
6-8. Block Diagram - POWER AMP Section - ...................... 34
6-9. Block Diagram - VIDEO Section (1/2) - ........................ 35
6-10. Block Diagram - VIDEO Section (2/2) - ........................ 36
6-11. Block Diagram - PANEL, CIS, XM/
SIRIUS RECEIVER, DMPORT Section - ...................... 37
6-12. Block Diagram - POWER SUPPLY Section - ................ 38
6-13. Printed Wiring Board
- MAIN Board (Component Side) - ................................ 40
6-14. Printed Wiring Board
- MAIN Board (Conductor Side) - .................................. 41
6-15. Schematic Diagram - MAIN Board (1/4) - ..................... 42
6-16. Schematic Diagram - MAIN Board (2/4) - ..................... 43
6-17. Schematic Diagram - MAIN Board (3/4) - ..................... 44
6-18. Schematic Diagram - MAIN Board (4/4) - ..................... 45
6-19. Printed Wiring Board
- DIGITAL Board (Component Side) - ........................... 46
6-20. Printed Wiring Board
- DIGITAL Board (Conductor Side) - ............................. 47
6-21. Schematic Diagram - DIGITAL Board (1/4) - ................ 48
6-22. Schematic Diagram - DIGITAL Board (2/4) - ................ 49
6-23. Schematic Diagram - DIGITAL Board (3/4) - ................ 50
6-24. Schematic Diagram - DIGITAL Board (4/4) - ................ 51
6-25. Printed Wiring Board - DSP Board (Side A) - ................ 52
6-26. Printed Wiring Board - DSP Board (Side B) - ................ 53
6-27. Schematic Diagram - DSP Board (1/4) - ........................ 54
6-28. Schematic Diagram - DSP Board (2/4) - ........................ 55
6-29. Schematic Diagram - DSP Board (3/4) - ........................ 56
6-30. Schematic Diagram - DSP Board (4/4) - ........................ 57
6-31. Printed Wiring Board
- ANALOG Board (Component Side) - .......................... 58
6-32. Printed Wiring Board
- ANALOG Board (Conductor Side) - ............................ 59
6-33. Schematic Diagram - ANALOG Board (1/3) - ............... 60
6-34. Schematic Diagram - ANALOG Board (2/3) - ............... 61
6-35. Schematic Diagram - ANALOG Board (3/3) - ............... 62
TABLE OF CONTENTS 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.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
1.5 k
Ω
0.15
μ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONET 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.