Kenwood TM-255A Instruction Manual page 57

13 TROUBLESHOOTING
Ee
Problem Symptom
Turning the RIT control
has no affect on the
receive frequency.
Probable Cause
The Receive Incremental Tuning
function is turned OFF.
Corrective Action
| Press [RIT] to turn ON the function.
SSB audio quality is
very poor; the high or
low audio frequencies
are absent.
The IF SHIFT control is set incorrectly.
| Return the IF SHIFT control to the
| center detent position.
|
|
The frequency display
is showing frequencies
far outside the range
of the transceiver.
The Transverter Frequency Display
function is ON.
Turn OFF Menu B, No. 76.
Scan doesn't work.
Squelch is not set correctly.
| Adjust the SQL control to just eliminate
| background noise.
Program Scan doesn't
stop when signals are
received.
The Busy-Frequency Stop function is
OFF.
| Turn ON Menu A, No. 03.
|
Band Scan only scans
a narrow range of
frequencies; the entire
band cannot be
scanned.
You are actually using Basic Scan
because you have selected a VFO
frequency within the limits for Basic
Scan and you have set the Basic Scan
Limits in memory channel 99.
Select a frequency that is outside the
limits set for Basic Scan, then press
[SCAN]. Or, you could erase the
frequency limits stored in memory
channel 99 by selecting that channel
and pressing [CLR] (2 s).
Scan Hold doesn't
work even though
Menu B, No. 56 is ON.
Busy-frequency Stop has not been
turned OFF.
Turn OFF Menu A, No. 3.
Memory Scan doesn't
work.
Data is not stored in 2 or more
memory channels.
All memory channels are locked out.
With Group Scan selected, the
channel you want to scan is ina
different group.
Store frequency data in at least 2
memory channels.
Unlock the memory channels you
want to scan.
Select All-channel Scan, or program
the desired frequency within the
current group.
The transceiver
switches OFF for no
apparent reason.
The Automatic Power Off function is
No key entry was made for 180
minutes when both APO and Tone
Alert were ON.
Turn OFF the APO function via
Menu B, No. 58.
Switch the power ON again.
The transceiver does
not respond correctly
after you press button
combinations per
instructions in this
manual.
50
Buttons are not being pressed in the
correct manner.
The microprocessor and its memory
need resetting.
Review "CONVENTIONS
FOLLOWED IN THIS MANUAL".
Different functions are selected
depending on how long a button is
held down or whether a button is
released before the next button is
pressed,etc.
First review "MICROPROCESSOR
RESET". After understanding what
data will be lost, do a Partial Reset.
If the problem remains, do a Full
Reset.
Continued