JVC KENWOOD Corporation 33101210 用户手册
88
16 TROUBLESHOOTING
OPERATION NOTICES
NEW AMATEUR RADIO BAND IN THE U.S.
The transceiver has been designed and engineered
to avoid possible hardware glitches. However, you
may notice the following symptoms when you operate
the transceiver. These symptoms are not
malfunctions.
to avoid possible hardware glitches. However, you
may notice the following symptoms when you operate
the transceiver. These symptoms are not
malfunctions.
DC POWER SUPPLY
As stated in the SPECIFICATIONS {page 91}, this
transceiver requires a supplied DC voltage source of
13.8 V
transceiver requires a supplied DC voltage source of
13.8 V
±
15%. If you find that the transceiver cannot
be switched ON, or that it shuts OFF automatically,
the DC voltage may be outside the specified range.
the DC voltage may be outside the specified range.
In such a case, remove the DC cable from the
transceiver immediately and confirm that the supplied
voltage is within the specified range.
transceiver immediately and confirm that the supplied
voltage is within the specified range.
INTERNAL BEATS
On some spots of the transceiver bands, the S-meter
moves or you cannot receive any signals. This is
inevitable when you use superheterodyne receivers.
You may notice the signals on the following spots of
the bands.
moves or you cannot receive any signals. This is
inevitable when you use superheterodyne receivers.
You may notice the signals on the following spots of
the bands.
1.234.56 MHz, 12.345.67 MHz
FAN NOISES
When the TX/ RX unit is installed in a non-ventilated
area, the cooling fan(s) may increase in speed and
emit a high level of noise for a long time. This is
because the TX/ RX unit cannot be cooled down with
the regular fan speed. In this case, relocate the TX/
RX unit so that air can easily flow through the TX/ RX
unit to keep the unit cooled.
area, the cooling fan(s) may increase in speed and
emit a high level of noise for a long time. This is
because the TX/ RX unit cannot be cooled down with
the regular fan speed. In this case, relocate the TX/
RX unit so that air can easily flow through the TX/ RX
unit to keep the unit cooled.
AGC
When you turn the AGC function OFF {page 35}, the
receiving audio signals can be distorted. In this case,
decrease the RF GAIN, turn the pre-amplifier OFF, or
turn the attenuator ON. In general, the RF GAIN is
greatly reduced when the AGC is turned OFF.
receiving audio signals can be distorted. In this case,
decrease the RF GAIN, turn the pre-amplifier OFF, or
turn the attenuator ON. In general, the RF GAIN is
greatly reduced when the AGC is turned OFF.
MICROPROCESSOR RESET
If your transceiver seems to be malfunctioning,
resetting the microprocessor default settings may
resolve the problem. There are 2 levels of resetting
the microprocessor of the TS-480 transceiver: Partial
Reset and Full Reset.
resetting the microprocessor default settings may
resolve the problem. There are 2 levels of resetting
the microprocessor of the TS-480 transceiver: Partial
Reset and Full Reset.
INITIAL SETTINGS
For each VFO, the factory defaults for the operating
frequency and mode are as follows:
frequency and mode are as follows:
•
VFO A:
14.000.000 MHz/ USB
•
VFO B:
14.000.000 MHz/ USB
The Memory channels and Quick Memory channels
have no data stored.
have no data stored.
PARTIAL RESET
Perform a Partial Reset if a key or control does not
function according to the instructions in this manual.
The following data is NOT erased by performing a
Partial Reset.
function according to the instructions in this manual.
The following data is NOT erased by performing a
Partial Reset.
•
Memory channel data
•
Menu settings
•
Antenna tuner preset data
•
ANT 1/ ANT 2 selection data
•
Frequency and mode data for the Auto Mode
function
function
•
Various adjustment setting values
Reset the transceiver by pressing [A/B / M/V]+[ ].
•
A confirmation message appears when performing
the Partial Reset. Press [A/B / M/V] to proceed.
Otherwise, press any other key to cancel the
Partial Reset and return to normal operation.
the Partial Reset. Press [A/B / M/V] to proceed.
Otherwise, press any other key to cancel the
Partial Reset and return to normal operation.
•
The VFOs reset to the factory default values.
FULL RESET
Perform a Full Reset if you want to erase all the data
in all the memory channels. In addition, this function
resets all the settings that you customized, to the
factory defaults (i.e.- menu settings, antenna tuner
preset data, etc.).
in all the memory channels. In addition, this function
resets all the settings that you customized, to the
factory defaults (i.e.- menu settings, antenna tuner
preset data, etc.).
Reset the transceiver by pressing
[A=B/ SPLIT]+[ ].
[A=B/ SPLIT]+[ ].
A confirmation message appears when performing
Full Reset. Press [A=B/ SPLIT] to proceed.
Otherwise, press any other key to cancel the Full
Reset and return to normal operation.
Full Reset. Press [A=B/ SPLIT] to proceed.
Otherwise, press any other key to cancel the Full
Reset and return to normal operation.
When you perform the full reset:
•
All frequencies, modes, memory data, adjustment
values, and AT preset data are set to the factory
default values.
values, and AT preset data are set to the factory
default values.