5-2
5.5 Checking Technical Alarms
Before troubleshooting the monitor, check for technical alarm messages. Correct all
Technical Alarms before continuing.
For detailed information on technical alarm message, possible cause and corrective
action, refer to the monitor’s operation manual.
5.6 Troubleshooting Guide
5.6.1 Power On/Off Failure
Symptoms Possible Cause Troubleshooting
The monitor
fails to start.
AC mains not
connected or battery
too low
Check that AC mains is properly connected
or battery capacity is sufficient.
Cable defective
1. Check that the cable between the keypad
board and main board is correctly
connected.
2. Check that the cable between the power
board and power management board is
correctly connected.
3. Check that the cable between the main
board and power management board is
correctly connected.
Power board
defective
Replace the power board.
Power management
board defective
Replace the power management board.
The main board
failed.
Replace the main board.
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