3-25
ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER SUPPLY ON SMPS BOARD
YES
YES
YES
YES
YES
No output 5.1 VA
No 12 V
Power line of MAIN PCB is short.
Replace F901 (same fuse).
Check or replace D963.
Is D960, D961 normal?
Replace BD901.
Check P_CTL from
μ
-com.
Check IC951 and replace.
Or
check line of MAIN PCB is short or not.
Check or replace D960, D961.
NO
NO
NO
NO
NO
Is the F901 normal?
Is the
VCC 12 VA supplied to IC951
pin1?
Is the VCC
(11 V ~ 25 V) supplied to IC901
pin4?
Is BD901 normal?
Is there
‘HIGH’ signal at IC951
pin4?
Содержание CJ98
Страница 17: ...1 16 ...
Страница 19: ...2 2 ...
Страница 21: ...2 6 2 5 ...
Страница 23: ...2 8 A60L A60R 3 SPEAKER SECTION FRONT SPEAKER ...
Страница 66: ...3 37 3 SERVO IC401 X XI XO Fig 3 2 CD 16M IC401 pin31 Fig 3 1 Crystal 16 9344 MHz X400 11 10 12 10 11 12 ...
Страница 73: ...3 47 3 48 PRINTED CIRCUIT BOARD DIAGRAMS 1 SMPS P C BOARD DIAGRAM TOP VIEW ...
Страница 75: ...3 51 3 52 2 MAIN P C BOARD DIAGRAM TOP VIEW ...
Страница 76: ...3 53 3 54 MAIN P C BOARD DIAGRAM BOTTOM VIEW ...
Страница 77: ...3 55 3 56 3 FRONT P C BOARD DIAGRAM TOP VIEW ...
Страница 78: ...3 57 3 58 FRONT P C BOARD DIAGRAM BOTTOM VIEW ...
Страница 79: ...3 59 3 60 4 JACK P C BOARD DIAGRAM TOP VIEW 5 LED CONNECTOR P C BOARD DIAGRAM TOP VIEW BOTTOM VIEW BOTTOM VIEW ...