4-1
4 Troubleshooting
4.1 Introduction
In this chapter, patient monitor problems are listed along with possible causes and
recommended corrective actions. Refer to the tables to check the patient monitor, identify
and eliminate the troubles.
The troubles we list here are frequently arisen difficulties and the actions we recommend
can correct most problems, but not all of them. For more information on troubleshooting,
contact our Customer Service Department.
4.2 Part Replacement
Printed circuit boards (PCBs), major parts and components in the patient monitor are
replaceable. Once you isolate a PCB you suspect defective, follow the instructions in 5
Repair and Disassembly to replace the PCB with a known good one and check that the
trouble disappears or the patient monitor passes all performance tests. If the trouble remains,
exchange the replacement PCB with the original suspicious PCB and continue
troubleshooting as directed in this chapter. Defective PCB can be sent to us for repair.
To obtain information on replacement parts or order them, refer to 6 Parts.
4.3 Patient Monitor Status Check
Some troubleshooting tasks may require you to identify the hardware version and status of
your patient monitor.
1. To view the information on system state, in the main menu, select [Maintenance >>]
→[System State >>].
2. You can also view the information on the monitor’s current status by selecting
[Maintenance >>]→[Factory Maintenance >>]→enter the required password →
[Monitor Information >>].
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