12.1. Distinguish the trouble cause
How to distinguish the trouble
1. View mechanical part if visual damage occurred.
Confirm the movement of mechanical parts assembly
(tray ass’y, loading mechanism ass’y, etc.).
2. Diagnose if Optical Pickup Unit is faulty (refer to
diagnosis of Optical Pickup Unit).
3. If mechanism and OPU are OK, it is P.C.B.
Cause 1
Possible fault
1. AC Inlet Circuit/Voltage Selector Circuit
Fuse Blow (F1,F2), Power Transformer Problem(T501,
T502), Wrong Selection of Selector (S501)
2. Power Circuit
Fuse Blow (F3, F4) FP951, FP950 open
3. Power Amp Circuit
IC502 faulty
4. Power Supply Circuit
IC500, IC501 faulty
5. Panel Circuit
FL Display Problem (-VP
→
Q950 faulty/ FP951 open/ D961
faulty)
SVS6V to Micro-P (Q951/ D965 faulty) Problem
Cause 2
Possible fault
1. Mechanical block
Tray and loading mechanical block, traverse unit, deck unit
2. O.P.U.
Refer to the diagnosis of OPU
3. Circuit
IC307 faulty (check for pin 31, 32)
IC701 faulty (check for pin 2, 23)
4. Power circuit
Refer to Cause 1
Cause 3
Possible fault
1. Mechanical block
Traverse block (Tilt adjustment)
2. O.P.U.
Refer to the diagnosis of OPU
18
SA-VK61DEE
Содержание SA-VK61
Страница 7: ...Fig 6 2 7 SA VK61DEE ...
Страница 10: ...9 Operation Procedures 10 SA VK61DEE ...
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Страница 12: ...10 Disc information 12 SA VK61DEE ...
Страница 13: ...13 SA VK61DEE ...
Страница 17: ...12 Procedure for repairing the set 17 SA VK61DEE ...
Страница 58: ...17 3 1 Cassette Deck Section 17 3 2 Adjustment Point 17 3 Alignment Points 58 SA VK61DEE ...
Страница 132: ...24 1 Deck Mechanism RAA3412 S 24 1 1 Deck Mechanism Parts Location 132 SA VK61DEE ...
Страница 133: ...133 SA VK61DEE ...
Страница 135: ...24 2 CD Loading Mechanism RD DAC036 S 24 2 1 CD Loading Mechanism Parts Location 135 SA VK61DEE ...
Страница 136: ...136 SA VK61DEE ...
Страница 137: ...137 SA VK61DEE ...
Страница 139: ...24 3 Cabinet 24 3 1 Cabinet Parts Location 139 SA VK61DEE ...
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Страница 156: ...24 6 Packaging 156 SA VK61DEE PRT0406 D K J N L ...