Table Of Contents - Sony SRP-X700P Service Manual

SAFETY CHECK-OUT
After correcting the original service problem, perform the fol-
lowing safety checks 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
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 pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
AC
Voltmeter
1.5 kΩ
(0.75 V)
Earth Ground

TABLE OF CONTENTS

1. SERVICE NOTE
2. GENERAL
.......................................................................... 9
3. ELECTRICAL ADJUSTMENT
4. DIAGRAMS
4-1. Circuit Boards Location .................................................... 18
4-2. Block Diagram .................................................................. 20
4-3. Printed Wiring Board - AC/PSW/TUNER Board - ......... 21
4-4. Schematic Diagram - AC/PSW/TUNER Board - ............ 23
4-5. Printed Wiring Board - AUDIO Board (1/2) - ................. 25
4-6. Printed Wiring Board - AUDIO Board (2/2) - ................. 27
4-7. Schematic Diagram - AUDIO Board (1/4) - .................... 29
4-8. Schematic Diagram - AUDIO Board (2/4) - .................... 31
4-9. Schematic Diagram - AUDIO Board (3/4) - .................... 33
4-10. Schematic Diagram - AUDIO Board (4/4) - .................... 35
4-11. Printed Wiring Board - DISPLAY/METER Board - ....... 37
4-12. Schematic Diagram - DISPLAY/METER Board - .......... 39
4-13. Printed Wiring Board - DSP Board (1/2) - ...................... 41
4-14. Printed Wiring Board - DSP Board (2/2) - ...................... 43
4-15. Schematic Diagram - DSP Board (1/3) - ......................... 45
4-16. Schematic Diagram - DSP Board (2/3) - ......................... 47
4-17. Schematic Diagram - DSP Board (3/3) - ......................... 49
4-18. Printed Wiring Board - FADER Board - .......................... 51
4-19. Schematic Diagram - FADER Board - ............................ 53
4-20. Printed Wiring Board
- LED/MA/MB/SPK/USB Board - .................................. 55
4-21. Schematic Diagram
- LED/MA/MB/SPK/USB Board - .................................. 57
4-22. Printed Wiring Board - PA Board (1/2) - ......................... 59
4-23. Printed Wiring Board - PA Board (2/2) - ......................... 61
4-24. Schematic Diagram - PA Board - .................................... 63
4-25. Printed Wiring Board - PS Board - .................................. 65
4-26. Schematic Diagram - PS Board - ..................................... 67
4-27. Printed Wiring Board - REMOTE Board - ...................... 69
4-28. Schematic Diagram - REMOTE Board - ......................... 71
4-29. Printed Wiring Board - STIN Board - .............................. 73
4-30. Schematic Diagram - STIN Board (1/3) - ........................ 75
4-31. Schematic Diagram - STIN Board (2/3), (3/3) - .............. 77
4-32. Printed Wiring Board - S VIDEO/VOUT Board - ........... 79
4-33. Schematic Diagram - S VIDEO/VOUT Board - .............. 81
4-34. Printed Wiring Board - VIDEO Board (1/2) - ................. 83
4-35. Printed Wiring Board - VIDEO Board (2/2) - ................. 85
4-36. Schematic Diagram - VIDEO Board - ............................. 87
4-37. IC Block Diagrams ........................................................... 89
4-38. IC Pin Functions ............................................................... 91
5. EXPLODED VIEW
5-1. Upper Case ........................................................................ 95
5-2. Front Panel Section ........................................................... 96
5-3. Tuner Slot Section ............................................................. 97
5-4. Center Block Section ........................................................ 98
5-5. Back Panel Section ............................................................ 99
6. ELECTRICAL PARTS LIST
- 4 -
................................................................. 5
.................................... 17
...................................... 100