Kenwood TS-890S Instruction Manual page 184

18 TROUBLESHOOTING
Symptom
The linear amplifier is not functioning. The REMOTE connector is not properly
When a linear amplifier is used for full
break-in operation in the CW mode,
the SWR may deteriorate suddenly or
an abnormal ALC voltage may be
applied when the linear amplifier starts
up.
AT-300 is not functioning.
Modulation is too shallow. (FM mode) Microphone gain is low.
When a commercially available power
meter is used, the TX output power
reading for SSB is low compared to
the other modes.
Transmission is still held after AT
tuning is complete.
VFO scan does not start.
Memory Scan is not functioning.
Group Scan is not functioning.
Memory Scan is only performed on
specific channels.
Voice guidance does not start
automatically.
Voice guidance is not output
automatically after Full Reset is
performed.
The [POWER] LED is blinking and the
power of this transceiver does not turn
on.
Program timer is not activated.
A firmware version confirmation
screen is displayed and this
transceiver does not start up.
Firmware cannot be updated.
18-4
Probable Cause
connected.
The audio source selected in Data VOX is
different from the audio source input, or the
input level of the input signal is low.
Control relay of the linear amplifier is turned off. Configure to a setting suitable for the linear
The linear amplifier in use requires some time
to start up (TL-922, etc.).
It is connected to antenna input connector 2
(ANT 2).
The fuse inside this transceiver is blown.
The peak power of SSB is not correctly
measured.
TX hold after AT tuning is configured to ON.
Program Scan is selected.
No data is registered in the memory channels. Register data to the memory channels.
No data is registered in the memory channels
within the group.
All the memory channels within the group are
locked out.
Group Memory Scan is selected.
Auto voice guidance is OFF.
Menu [1-06] is configured to "Off".
This transceiver is preparing to activate the
program timer operation.
The timer operation is not configured to ON.
The firmware of this transceiver cannot be
detected.
The name of the zip file is changed.
The zip file is uncompressed.
Corrective Action
Reconnect the connector properly.
Check the Data VOX settings or check the input
level of the input signal.
amplifier, such as "Active High + Relay Control"
for "Keying Logic" in the Linear Amplifier menu.
Operate in the semi break-in mode by
configuring to a setting that includes an
appropriate delay time for the linear amplifier,
such as "Active High + Relay Control" for
"Keying Logic" in the Linear Amplifier menu.
Connect it to antenna input connector 1 (ANT
1).
Check the fuse, address the cause and replace
the blown fuse with a new one.
Configure the microphone gain in Advanced
Menu [10].
To ensure correct measurement of the peak
power for SSB, the use of devices such as an
oscilloscope which are capable of displaying
instantaneous waveforms is recommended.
Commercially available power meters may not
be able to measure the peak power fully in some
cases. Please use them as reference values.
Configure TX hold after AT tuning to OFF in
Advanced Menu [7].
Configure all the settings for memory channels
P0 to P9 to OFF in the Program Scan/VFO Scan
configuration mode. Alternatively, press [VFO/
PRG] to select VFO Scan.
Register data to the memory channels of the
corresponding group number.
Cancel the lockout for the memory channels to
be scanned.
Reconfigure or cancel the group selection.
Configure auto voice guidance to "On" in Menu
[1-06].
Turn on the power while pressing [PF A], or
configure Menu [1-06] to "On".
Wait for the program timer operation to start. To
stop the program timer operation, press [
4 seconds.
Check whether the timer operation has been
temporarily turned off (<< >> goes off) by
pressing F [TIMER] after the timer operation is
configured to ON.
Rewrite the firmware. If the same symptom
persists after rewriting the firmware, please
send an inquiry to KENWOOD service center
together with the number that is displayed at the
bottom right corner of the message.
Update the firmware without changing the
name of the zip file. The file name may be
changed if the file is downloaded to the PC
multiple times.
Update the firmware without uncompressing
the zip file.
Refer to
16-13
16-14
16-13
4-12
17-4
5-28
4-12
10-1
9-2
10-3
10-4
10-3
13-1
13-1
] for 14-4
14-4
17-1