10
TROUBLESHOOTING
G. DRUM Motor stops
H. CAPSTAN doesn’t rotate
CAPSTAN doesn’t 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
(D825).
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
(D825).
Check DRUM PG/FG
(IC 501 pin# 90).
Check R534,R535,C519,C520.
NO
Summary of Contents for DF-4500
Page 5: ...4 TROUBLESHOOTING 2 SYSTEM CIRCUIT...
Page 6: ...5 TROUBLESHOOTING P303 Check REMOCON_IN Pin2...
Page 7: ...6 TROUBLESHOOTING B Digital Board Mpeg...
Page 28: ...27 CIRCUIT DIAGRAM 1 SERVO SYSCON SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 29: ...28 CIRCUIT DIAGRAM 2 AV IC SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 30: ...29 CIRCUIT DIAGRAM 3 Hi Fi SW IN OUT CIRCUIT SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 31: ...30 4 ADC DAC VIDEO AMP IC SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO CIRCUIT DIAGRAM...
Page 32: ...31 CIRCUIT DIAGRAM 5 FRONT PART SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 33: ...32 CIRCUIT DIAGRAM 6 TUNER NICAM SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 34: ...33 CIRCUIT DIAGRAM 7 POWER SUPPLY SCHEMATIC DIAGRAM...
Page 46: ...45 PCB CIRCUIT BOARD 1 MAIN Analog board PCB...
Page 47: ...2 POWER PCB PCB CIRCUIT BOARD 46...
Page 48: ...47 PCB CIRCUIT BOARD 3 Mpeg Digital board PCB...
