TROUBLESHOOTING
B-1. Bad playback quality (1)
Noise appears on the
playback screen.
Is noise diminished by trackingNO
Re-adjust PATH.
adjustment.
YES
NO
Noise band is trembled up andNoise appears on the screen evenYES
Re-adjust PATH.
down?though changing tape.
YES
NONO
Is there CTL pulse at IC501Is the height of CTL HEAD normal? Re-adjust the height of AC HEAD.
pin#97?No dust?Remove the dust.
YES
Is there problem in CTL InputYESCheck C510,R545~R547
Check IC501.
circuit and amplifier.IC 501 pin #91, 92, 98.
B-2. Bad playback quality (2)
Noise appears on the FullRecheck step B-1
playback screen.(Bad playback quallty (1)).
YES
NONO
Are there SW, HA SW pulse at
Are SW pulse and HA SW normal?Check IC501.
IC501 pin #16, 18?
YES
YES
Check PCB Pattern.
NOCheck HEAD AMP connector
ENVE Wave at PT01 pin #4?
and HEAD.
YES
Check VIDEO circuit.
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