Kenwood TH-55AT Series - Manual (Page 22)

IN CASE OF DIFFICULTY
The problems described in this table are failures caused in general by improper operation or connection of the transceiver, not
by defective components. Examine and check according to the following table.
Symptom Probable cause Action
Indicators do not light and data is not
displayed when power switch is
pressed.
a. Low voltage
With optional DC cable
b. Wrong power polarity.
c. Fuse is blown.
a. Recharge/replace the battery.
b. Connect red to •' + ” and black to
c. Replace with the specified fuse.
All the indicators go out on the LCD
display, or TX indicator does not light.
All the indicators flash. a. Low voltage a. Recharge/replace the battery.
No sound from the speaker. No signal
can be received. a. Squelch is closed.
b. PTT switch is depressed setting the
unit in the transmit mode.
a. Turn the SQL control counterclock­
wise.
b. Release the PTT switch.
No control works. a. LOCK is ON.
b. T.ALT key is ON.
a. Place the F.LOCK switch to OFF
position.
b. Press the T.ALT key.
When rotating the Tuning control after
the M key has been pressed, no con­
trol works. a. Nothing is stored in the memory
channel.
a. See page 13: MEMORY ENTRY
Memory cannot be backed up. a. Backup battery voltage is low. a. Contact the authorized dealer.
(TH-55AT/55E only)
The receive tone may become distort-
a. The transmit frequency of the dis­
tant station drifts a little.
a. Adjust the RIT control as required.
ed, making it difficult to hear. b. The RIT control is adjusted off the
detent position.
b. Set the RIT control to the detent
(click) position.
(TH-55AT/55E only)
No autopatch tone is transmitted even
though the PTT switch is depressed
and a tone sounds through the
speaker.
a. The transmit indicator is not on,
even though the PTT switch is
depressed.
For example: When programming
Odd Split data.
a. Ensure the TX indicator is ON.
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