Troubleshooting - Icom IC-M90 Instruction Manual

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D LCD contrast selection "LC"
The contrast of the LCD can be adjusted from 4 levels.
• 1 (bright)–4 (dark); 3 (default)
Push
default
D Auto power save function "PS"
The auto power save function reduces current drain by de-
activating the receiver circuit for preset intervals.
• ON : The power save function is turned ON. The power save func-
tion will activate when no signal is received, and no operation
is performed for 5 sec.
• OFF: The power save function is turned OFF.
Push
Power save ON (default)
bright
Power save OFF
D Self check function "SC"
The self check function checks the transceiver conditions
by itself, and informs you in case a problem is found. Self
check automatically and quickly runs through its diagnostic
steps each time the radio is turned ON. Afterwards, the radio
switches to normal operation mode.
• Temperature : Outside of –35°C to +73°C; –31°F to +163°F
(approx.)
• Connected battery voltage
Push
Self check OFF (default)
When error messages as shown below are displayed, see
troubleshooting for advice. (p. 28)
Temperature error
8
SET MODE
Self check ON
Battery voltage error
8
19

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