
10
TROUBLESHOOTING
F. DRUM Motor stops
G. CAPSTAN doesnÕt rotate
CAPSTAN doesnÕt rotate.
Is EVER 14V voltage obtained
at P501 pin#2?
YES
NO
NO
NO
YES
YES
Is Capstan PWM fit to
IC501 pin#77?
Is 3.2V voltage obtained
at P501 pin#5?
Is 2.7V voltage obtained
at P501 pin#9?
Check P501 Connector and
Capstan Motor.
Check EVER 14V.
(Q850)
Check Capstan FG
(IC 501 pin# 87).
Check
R541,R540,R539,R538,C518
Check R537,R536,C521
DRUM Motor stops.
Is 14V voltage obtained at P501
pin#8?
YES
NO
NO
NO
YES
YES
Is DRUM PWM fit to IC 501
pin#76?
Is 2.6V voltage obtained at
P501 pin#12?
Check Capstan Motor and
DRUM Motor.
Check EVER 14V
(Q850).
Check DRUM PG/FG
(IC 501 pin# 90).
Check R534,R535,C519,C520.
NO
Содержание SD-7500
Страница 1: ...SERVICE MANUAL DAEWOO SD 7500 MODEL MC Service ...
Страница 28: ...26 CIRCUIT DIAGRAM 1 POWER SUPPLY CIRCUIT DIAGRAM MC Service ...
Страница 29: ...27 CIRCUIT DIAGRAM 2 SERVO SYSCON CIRCUIT DIAGRAM VCR AM REC COPY C dts T DVD MC Service ...
Страница 30: ...28 CIRCUIT DIAGRAM 3 VIDEO AUDIO CIRCUIT DIAGRAM MC Service ...
Страница 31: ...29 4 HiFi SW INPUT CIRCUIT DIAGRAM CIRCUIT DIAGRAM MC Service ...
Страница 32: ...30 CIRCUIT DIAGRAM 5 PIF CIRCUIT DIAGRAM MC Service ...
Страница 33: ...31 CIRCUIT DIAGRAM 6 DVD CIRCUIT DIAGRAM MC Service ...
Страница 34: ...32 CIRCUIT DIAGRAM MC Service ...
Страница 35: ...33 CIRCUIT DIAGRAM MC Service ...
Страница 36: ...34 CIRCUIT DIAGRAM MC Service ...
Страница 37: ...35 CIRCUIT DIAGRAM MC Service ...
Страница 38: ...36 PCB CIRCUIT BOARD 1 1 VCR MAIN MC Service ...
Страница 39: ...37 PCB CIRCUIT BOARD 1 2 POWER MC Service ...
Страница 40: ...38 PCB CIRCUIT BOARD 1 3 DVD MAIN MC Service ...
Страница 45: ...43 INSTRUMENT DISASSEMBLY F MAIN CHASSIS DISASSEMBLY FIG 6 Remove 4 screws then remove MAIN ...
Страница 46: ...44 INSTRUMENT DISASSEMBLY G Explode view MC Service ...
Страница 58: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp ...