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9-30
Troubleshooting
O
K
TLDI 115A 2007
NO
Closed?
NO
YES
NO
NO
NO
YES
YES
YES
NO
YES
Operating
noise heard?
Check operation of PTT
motor.
Check that manual valve is
closed.
Check battery and fuse.
Check electrical conductivity
of PTT switch.
Normal?
Repair or replace
defective parts.
Check electrical conductivity
of PTT solenoid.
Conductive?
Conductive?
Conductive?
Replace PTT switch.
Replace PTT solenoid.
Disassemble PTT motor
to check.
Close manual valve.
Repair or replace
defective parts.
Check wire harness between
battery, PTT solenoid and
PTT switch.
YES
Go to next page.
PTT Unit
State 1
PTT unit will not operate.
MD115A̲09̲2校̲070604.qxd 07.6.6 7:01 PM ページ 30