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CAPSTAN MOTOR TROUBLESHOOTING
The capstan motor fails to run.
Is 5V at pin (1) of connector AC ?
Is the voltage more than about 2.6V
Is the voltage at pin (6) of connector
Is 12V at pin (7) of connector AC ?
Check/replace the capstan motor.
I
FLOWCHARTNO. l-6
Check the PC5V line.
I
I
I
Check the AT12V line.
TAKE-UP REEL PULSE GENERATOR TROUBLESHOOTING
No reel sensor pulse appears.
Are there the take
up/supply reel pulses at
pins (4) and (5) of
connector AM ?
1
NO
HEAD SWITCHING PULSE TROUBLESHOOTING
No head switching pulse.
Is the drum motor
rotating ?
YES
0
Are the drum PG and
A
drum FG signal inputted
to pins (86) and (87) of
NO
Are there the drum PG
and drum FG signals at
pins (3) and (5) of
connector AD ?
NO
FLOWCHART NO. 1-7
FLOWCHART NO. l-8
NO
See FLOW CHART NO.
Check pin (18) of IC7701
YES
and signal line of head
switching pulse.
Check PG/FG signal lines
YES
all the way up to pins (86)
and (87) of IC7701.
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