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6. TROUBLESHOOTING
6.1 Precautions
(1) Exclusive wrench is needed to remove the
antenna from the radiotelephone. If the
removal is forced by any other means, the
antenna or the radiotelephone will be
damaged. Ask a nearest JRC dealer or branch
if the removal is necessary.
(2) Before making repairs or asking for repairs,
check fundamental matters such as operating
procedures and battery conditions.
(3) Unless having suitable measuring
instruments or qualification to make repair,
never disassemble this equipment.
(4) When disassembling this equipment, refer to
Figure 6-1.
6.2 Troubleshooting
Guide
NO Trouble
Possible
cause
Counter-
measure
1 CH
indicator
does not light
during power
on.
(1)Battery
discharged
(2)PS circuit
failure
(1)Charge
battery
(2)Check
voltages
2 No
sound
comes out
although
BUSY lamp
is on.
(1)Speaker
wire break
(2)Loose
contact in
connector
(3)AF amp
failure
(1)Replace
speaker
(2)Check
connector
and speaker
cable
(3)Check the
AF amp
3 BUSY
lamp
off and no
voice heard.
(1)Squelch
closed
(2)IF amp
failure
(1)Turn SQ
control
fully
counter-
clockwise
(2)Check IF
amplifier
4 CH16
lamp
blinks but
no voice
heard.
Synthesizer
failure
Check
synthesizer
5
Tx lamp does
not light
during
transmitting.
Transmitter
failure
Check
transmitter
6
Despite Tx
lamp lighting,
communication
unavailable.
Using a
different
channel.
Make sure of
channel No.
Figure 6-1 Assembly Drawing of the Radiotelephone