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E-23
TROUBLESHOOTING GUIDE
YES
NO
YES
Tape loading is OK, but unloads
immediately
Whether does a
cylinder rotate or not?
NO
NO
YES
NO
YES
NO
YES
NO
NO
YES
YES
Whether it takes UNREG
12V for CP1005 2nd pin
or not?
Investigate a power supply
circuit.
When playback, it
takes 1.3V for 5th
pin of CP1005?
Whether is a voltage of a
whether DC 5V pulse depends
on IC1001 65th pin or not
IC1001 76th pin 1.4V or not?
Exchange a cylinder unit.
Investigate R1049, R1052,
R1056 and D1009.
Whether does a head
switching pulse appear
for TP1002 or not?
30 Hz
Whether is PG pulse
signal inputed by IC1001
90th pin or not?
Exchange IC1001.
Whether is a reel
sensor pulse signal
by IC1001 79th pin
and 80th pin or not?
Investigate a reel sensor.