Advertisement
TROUBLESHOOTING
E. No CASSETTE Loading
Cassette tape isnÕt inserted.
NO
Is 5V voltage obtained at Loading
Check at EVER 14V
parts IC501 pin#63?
Check Q850.
YES
NO
Is 14V voltage obtained at
Check D851 and POWER circuit.
Capstan Motor P501 pin#2?
YES
Connect Capstan and Loading Motor.
Is 13V voltage obtained at Each
NO
Check connector and Capstan Motor.
parts of Loading Motor?
YES
Replace Loading Motor.
F. AUTO STOP in Playback mode
VCR stops automatically in
playback mode.
NO
Is there REEL Pulse at IC501
Check S501, S502 REEL Sensor.
pin#79, 80?
YES
Is D.PG/FG pulse at IC501
pin#90 normal ?
YES
Is C. FG pulse at IC501 pin#87
YES
Check and replace IC501.
NO
Check R544,C516 and P501
pin#11.
NO
Check C.FG(R543,C517) and
normal ?
P501 pin#1.
10
G. DRUM Motor stops
DRUM Motor stops.
Is 14V voltage obtained at P501
NO
Check EVER 14V
pin#8?
(Q850).
YES
Is DRUM PWM fit to IC 501
Check DRUM PG/FG
NO
pin#76?
(IC 501 pin# 90).
YES
Is 2.6V voltage obtained at
NO
Check R534,R535,C519,C520.
P501 pin#12?
YES
Check Capstan Motor and
DRUM Motor.
H. CAPSTAN doesnÕt rotate
CAPSTAN doesnÕt rotate.
Is EVER 14V voltage obtained
NO
Check EVER 14V.
at P501 pin#2?
(Q850)
YES
Is Capstan PWM fit to
Check Capstan FG
NO
IC501 pin#77?
(IC 501 pin# 87).
YES
Is 3.2V voltage obtained
NO
Check
at P501 pin#5?
R541,R540,R539,R538,C518
YES
NO
Is 2.7V voltage obtained
Check R537,R536,C521
at P501 pin#9?
Check P501 Connector and
Capstan Motor.
11
TROUBLESHOOTING
Advertisement
