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TROUBLE SHOOTING GUIDE (continued)
Direct call is not made after operating the Radio Tuner (FMT M15).
Are the other units called?
ef sein
See Page 6.
Pull out the
Remote Plug of
the Tuner.
Check
if pulse-shape
voltage
is
applied to the START
section of
the Remote
Plug when the Tuner
is operated.
(The button is pushed.)
Check O03 and'004
of the Tuner. (Open)
Yes
Check the circuit.
Broken plug wire
Broken pattern
Solder tunnel
Is pulse-shape
voltage applied
to
Pin 4 of 1C7815 of the Amplifier?
Check the Amplifier circuit.
® |nadequate contact of jacks
e Solder tunnel of jacks
No
Is pulse-shape voltage low?
Replace |C LC7815.
e@ Solder touch of jacks
e Broken pattern
e Check Q03 and 004 of the Tuner.
e Check the circuit.
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