21 General Information Tuneup
August 2004© Tait Electronics Ltd
Visual and Aural
Indications
In radios that have a control head with UI, visual and aural indicators give
information about the state of the radio. Visual indications are provided
by the
STATUS
LEDs, function-key LEDs, and LCD screen on the front
panel. The information conveyed by the
STATUS
LEDs is listed in
Table 1.7. The behaviour of the function-key LEDs depends on the way
the function keys are programmed; further information is not
appropriate in this manual. The LCD screen normally displays only the
number of the channel to which the radio is tuned. Other displays will
be mentioned where necessary but are not summarised here. Aural
indications are provided in the form of different tones emitted from the
speaker. The information conveyed by the tones is given in Table 1.8.
Not all of the tones listed are relevant to the servicing of radios but they
are included for the sake of completeness.
Table 1.6 CCTM error codes
Error code Description
C01 An invalid CCTM command has been received. Enter a valid CCTM command.
C02 A valid CCTM command with invalid parameters has been received. Re-enter the CCTM
command with valid parameters.
C03 A valid CCTM command has been received but cannot be processed at this time. Enter the
CCTM command again. If the error persists, power the radio down and up again, and re-enter
the CCTM command.
C04 An error occurred on entry into CCTM. Power the radio down and up again, and place the
radio in CCTM again.
C05 The radio has not responded within the specified time. Re-enter the CCTM command.
X04 The DSP is not responding. Check the DSP pin connections. If the error persists, replace the
DSP.
X05 The version of the DSP is incompatible with the version of the radio firmware. Replace the DSP
with a later version.
X06 The internal configuration of the MCU is incorrect. Adjust the configuration.
X31 There is an error in the checksum for the model configuration.
X32 There is an error in the checksum for the radio’s database.
X35 The radio temperature is above the T1 threshold and a reduction in the transmit power is
impending. To avoid damaging the radio, stop transmitting until the radio has cooled down
sufficiently.
X36 The radio temperature is above the T2 threshold and the inhibiting of transmissions is
imminent.
X37 The supply voltage is less than the V1 threshold.
X38 The supply voltage is less than the V2 threshold and the radio has powered itself down. The
radio will not respond to the reset command character
^
.
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