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3-36
ELECTRICAL TROUBLESHOOTING GUIDE
B
Check speaker cable connection.
Check IC600.
Check IC700,
IC701, IC704, IC705.
Check IC601,IC602
Check SMPS.
Check Q701,Q702,Q703,
Q704,Q714,Q716,Q719,Q720.
Check IC600.
Check IC702,
IC703, IC706, IC708.
Check IC603,IC604
Check SMPS.
Check Q704,Q705,Q708,
Q709,Q721,Q722,Q723,Q724.
IC600
Pin28,29,35,36 FL/FR±
signal OK?
Pin13 of
IC700,IC701,IC704,IC705 FL/FR
audio signal OK?
IC601,
IC602 FL/FR audio signal
OK?
±40 V,-28 V,
±5 V power voltage
OK?
Q700,Q701,
Q702,Q703,Q714,Q716,Q719,
Q720 OK?
IC600
Pin26,27,31,32 SWL/SWR±
signal OK?
Pin13 of IC702,
IC703,IC706,IC708 SWL/SWR
audio signal OK?
IC603,
IC604 SWL/SWR audio
signal OK?
±40 V,-28 V,
±5 V power voltage
OK?
Q704,Q705,
Q708,Q709,Q721,Q722,Q723,
Q724 OK?
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
OK
Содержание CM9730
Страница 11: ...MEMO 1 10 ...
Страница 13: ...MEMO 2 2 ...
Страница 59: ...MEMO 3 42 ...
Страница 83: ...3 89 3 90 2 MAIN P C BOARD TOP VIEW ...
Страница 84: ...3 91 3 92 MAIN P C BOARD BOTTOM VIEW ...
Страница 85: ...3 93 3 94 3 VFD P C BOARD ...
Страница 86: ...3 95 3 96 4 MAIN VOLUME P C BOARD 5 MIC P C BOARD ...
Страница 87: ...3 97 3 98 6 JOG P C BOARD 7 USB P C BOARD 8 TUNER P C BOARD ...
Страница 88: ...3 99 3 100 9 SPEAKER LED_MAIN P C BOARD TOP VIEW 10 SPEAKER LED P C BOARD TOP VIEW BOTTOM VIEW BOTTOM VIEW ...
Страница 89: ...3 101 3 102 MEMO MEMO ...