Sony STR-DE715 - Fm Stereo/fm-am Receiver, Руководство по обслуживанию

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3
STR-DA4300ES
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.
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.
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
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
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)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
TABLE OF CONTENTS
1. SERVICING NOTES
.............................................. 5
2. GENERAL
.................................................................. 8
3. DISASSEMBLY
3-1. Disassembly Flow .......................................................... 12
3-2. Case ................................................................................ 13
3-3. Front Panel Block ........................................................... 13
3-4. CIS Board, Tuner (FM/AM) ........................................... 14
3-5. D.AUDIO Board, DSP Board ......................................... 14
3-6. TUNER Board, CONTROL Board ................................ 15
3-7. PREOUT Board, S_SPTM Board .................................. 15
3-8. D_VIDEO Board ............................................................ 16
3-9. A_VIDEO Board ............................................................ 16
3-10. MAIN Board, C_SPTM Board ....................................... 17
3-11. AC Board, Power Transformer (T001) ........................... 18
3-12. Power AMP Block .......................................................... 18
4. TEST MODE
............................................................. 19
5. ELECTRICAL ADJUSTMENTS
........................ 23
6. DIAGRAMS
6-1. Block Diagram – CONTROL Section – ......................... 25
6-2. Block Diagram – DSP Section – .................................... 26
6-3. Block Diagram – DIGITAL AUDIO Section – .............. 27
6-4. Block Diagram – HDMI Section – ................................. 28
6-5. Block Diagram – VIDEO PROCESS Section – ............. 29
6-6. Block Diagram – ANALOG AUDIO Section – ............. 30
6-7. Block Diagram – POWER AMP Section – .................... 31
6-8. Block Diagram – VIDEO Section – ............................... 32
6-9. Block Diagram – PANEL, CIS, XM/
SIRIUS RECEIVER, DMPORT Section – .................... 33
6-10. Block Diagram – POWER SUPPLY Section – .............. 34
6-11. Schematic Diagram – MAIN Board (1/4) – ................... 36
6-12. Schematic Diagram – MAIN Board (2/4) – ................... 37
6-13. Schematic Diagram – MAIN Board (3/4) – ................... 38
6-14. Schematic Diagram – MAIN Board (4/4) – ................... 39
6-15. Printed Wiring Board – MAIN Board – ......................... 40
6-16. Schematic Diagram – D.AUDIO Board (1/5) – ............. 41
6-17. Schematic Diagram – D.AUDIO Board (2/5) – ............. 42
6-18. Schematic Diagram – D.AUDIO Board (3/5) – ............. 43
6-19. Schematic Diagram – D.AUDIO Board (4/5) – ............. 44
6-20. Schematic Diagram – D.AUDIO Board (5/5) – ............. 45
6-21. Printed Wiring Board
– D.AUDIO Board (Component Side) – ........................ 46
6-22. Printed Wiring Board
– D.AUDIO Board (Conductor Side) – .......................... 47
6-23. Printed Wiring Board
– TUNER Board (Component Side) – ........................... 48
6-24. Printed Wiring Board
– TUNER Board (Conductor Side) – ............................. 49
6-25. Schematic Diagram – TUNER Board (1/2) – ................ 50
6-26. Schematic Diagram – TUNER Board (2/2) – ................ 51
6-27. Printed Wiring Board – DSP Board (Side A) – .............. 52
6-28. Printed Wiring Board – DSP Board (Side B) – .............. 53
6-29. Schematic Diagram – DSP Board (1/4) – ...................... 54
6-30. Schematic Diagram – DSP Board (2/4) – ...................... 55
6-31. Schematic Diagram – DSP Board (3/4) – ...................... 56
6-32. Schematic Diagram – DSP Board (4/4) – ...................... 57
6-33. Printed Wiring Boards – CONNECTOR Section – ........ 58
6-34. Schematic Diagram – CONNECTOR Section – ............ 59
6-35. Printed Wiring Board
– TEMPERATURE DETECTION Board – ................... 60