In Case Of Difficulty - Kenwood TM-231A Instruction Manual

6-3. IN CASE OF DIFFICULTY
Symptom
Probable cause
Corrective action
Indicators do not light and no receiver noise is
heard when the POWER switch is turned on.
. Bad power cable or connections.
. Blown power supply fuse.
. Check cables and connections.
. Check for the cause of the blown fuse and
replace the fuse.
No sound from the speaker. No signal can be
received.
. Squelch is closed.
2. With the TSU-6: CTCSS is operating.
. Turn the SQL control counterclockwise.
. Press the TONE/T.ALT key to turn off the
CTCSS.,
No transmitter output.
Weak signal cannot be received.
Display is dark.
No control works.
Memory cannot be backed up.
36
. Microphone jack is not plugged in.
. Poor antenna connection.
Poor antenna connection.
1. Power voltage is low.
2. The DIM key had been pressed.
| 1. Plug jack in.
2. Connect antenna securely.
Connect antenna securely.
1. Check voltage for 13.8 VDC 415%.
2. Press the F key and the LOW/DIM key.
LOCK is ON.
Set the Microphone Lock key to OFF position.
Backup battery voltage is low.
See Microprocessor memory back-up page
oh.