2-2
Is 5.2V applied
to CN62 Pin 5 ?
Check FRONT Circuit
Check L620, R620
No LED
Check R622, R623
Check D601-D604
Check Q626, D609
Check IC64, D628, D621
Check Q622, Q623, R632
Check Q620, Q625, R625
No 8V
No 3.3V
Check D625, IC62
Check IC67, R609
NO FLD
1. POWER (SMPS) Circuit
ELECTRICAL TROUBLESHOOTING GUIDE
END
No 5V_D, 5V_A
NO
NO
NO
NO
YES
YES
YES
YES
Is High State applied
to CN63 Pin 2 ?
Is 5.2V applied
to PT61 Pin 1 ?
Is -24V applied
to CN62 Pin 3 ?
Содержание L55
Страница 1: ...SERVICE MANUAL L55 DVD VIDEO CD CD PLAYER DVD VIDEO CD CD PLAYER L55 ...
Страница 2: ...1 2 ...
Страница 8: ...REMOTE CONTROL REMOTE SELECT 1 8 ...
Страница 21: ...2 12 BLOCK DIAGRAM ...
Страница 27: ...2 18 2 19 CIRCUIT DIAGRAM 1 POWER SMPS CIRCUIT DIAGRAM ...
Страница 31: ...4 1 ...
Страница 34: ...7 DIGITRON KEY CIRCUIT DIAGRAM 2 32 2 33 ...
Страница 35: ...8 JACK CIRCUIT DIAGRAM 2 34 2 35 ...
Страница 36: ...LOCATION GUIDE BOTTOM SIDE TOP SIDE ...
Страница 37: ...2 POWER P C BOARD 2 38 2 39 ...
Страница 38: ...3 AV P C BOARD 2 40 2 41 ...
Страница 39: ...4 FRONT P C BOARD 2 42 2 43 ...
Страница 48: ...4 1 ...
Страница 49: ...4 2 ...
Страница 50: ...4 3 ...
Страница 51: ...4 4 ...
Страница 52: ...4 5 ...
Страница 53: ...4 6 ...
Страница 55: ...SERVICE MANUAL DVD VIDEO CD CD PLAYER L55 NAD ELECTRONICS INTERNATIONAL LONDON NAD 2001 ...