Sony HCD-CP101, Service Manual

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HCD-CP101
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 pas-
sive 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
............................................... 4
2. GENERAL
Location of Controls ....................................................... 5
Setting the Clock ............................................................. 6
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Cover (Upper) ................................................................. 8
3-3. CD Lid Sub Assy ............................................................. 8
3-4. Front Panel Section ......................................................... 9
3-5. Tape Mechanism Deck .................................................... 9
3-6. CD Mechanism Deck (CDM55F-K6BD41A) ................ 10
3-7. Base Unit (BU-K6BD41A) ............................................. 10
3-8. Motor Board .................................................................... 11
3-9. Cam (CDM55) ................................................................ 11
4. TEST MODE
.............................................................. 12
5. ELECTRICAL ADJUSTMENTS
Deck Section ................................................................... 13
CD Section ...................................................................... 14
6. DIAGRAMS
6-1. Block Diagram – CD Section – ..................................... 15
6-2. Block Diagram – TUNER/TAPE DECK Section – ...... 16
6-3. Block Diagram – MAIN Section – ................................ 17
6-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 18
6-5. Printed Wiring Board – CD Section – ........................... 20
6-6. Schematic Diagram – CD Section – .............................. 21
6-7. Printed Wiring Board – TAPE DECK Section – ........... 22
6-8. Schematic Diagram – TAPE DECK Section – .............. 23
6-9. Printed Wiring Boards – MAIN Section – ..................... 24
6-10. Schematic Diagram – MAIN Section (1/3) – ................ 25
6-11. Schematic Diagram – MAIN Section (2/3) – ................ 26
6-12. Schematic Diagram – MAIN Section (3/3) – ................ 27
6-13. Printed Wiring Boards – CONTROL Section – ............ 28
6-14. Schematic Diagram – CONTROL Section – ................. 29
6-15. Printed Wiring Board – POWER Section
(US, Canadian, Mexican models) – ................................ 30
6-16. Printed Wiring Board – POWER Section
(Except US, Canadian, Mexican models) – ................... 30
6-17. Schematic Diagram – POWER Section – ..................... 31
6-18. IC Pin Function Description ........................................... 34
7. EXPLODED VIEWS
7-1. Cover Section .................................................................. 36
7-2. Front Panel Section ......................................................... 37
7-3. Chassis Section ............................................................... 38
7-4. CD Mechanism Deck (CDM55F-K6BD41A) ................ 39
7-5. Base Unit (BU-K6BD41A) ............................................. 40
8. ELECTRICAL PARTS LIST
............................... 41