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4.5 Technical Alarm Check
Before troubleshooting the patient monitor, check for technical alarm message. If an alarm message is
presented, eliminate the technical alarm first. For detailed information on technical alarm message, possible
cause and corrective action, refer to the patient monitor’s User Manual.
4.6 Troubleshooting Guide
4.6.1 Power On/Off Failures
Symptoms Possible Cause Corrective Action
The patient monitor fails
to start (AC LED or
battery LED does not
light)
AC power cable not connected
and the battery capacity is too
low
Check that AC power is properly connected
and check that the battery capacity is
sufficient.
Fuse(s) is (are ) broken
Use a Multi-meter to check it out, if you
don’t know how to use, please refer to our
International Service Dept.
Cables defective or poorly
connected
1. Check that cables from button board to
power module properly connected.
2. Check that cables and connectors are not
damaged.
KEY board is defective Replace the KEY board
Power module is defective Replace the power module
The patient Monitor fails
to start.（AC indicator or
battery indicator are
lighting）
The cable between power
supply board to keyboard
defective
Check this cable to see if it’s connected well
Key board is Defective Replace the key board
Power module is defective Reconnected the power module
Motherboard is Defective Replace the Motherboard
4.6.2 Display Failures
Symptoms Possible Cause Corrective Action
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