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4Troubleshooting
Introduction
This section explains how to troubleshoot the monitor if problems arise. Links to tables that list
possible monitor difficulties are supplied, along with probable causes, and recommended actions to
correct the difficulty.
How To Use This Section
Use this section in conjunction with the sections Testing and Maintenance and Parts. To remove and
replace a part you suspect is defective, follow the instructions in the section Repair and Disassembly.
The Theory of Operation section offers information on how the monitor functions.
Who Should Perform Repairs
Only qualified service personnel should open the monitor housing, remove and replace components, or
make adjustments. If your medical facility does not have qualified service personnel, contact Philips’
Response Center or your local Philips representative.
WARNING High Voltage - Voltages dangerous to life are present in the instrument when it is connected to the
mains power supply. Do not perform any disassembly procedures (other than server and extension
removal) with power applied to the instrument. Failure to adhere to this warning could cause serious
injury or death.
Replacement Level Supported
The replacement level supported for this product is to the printed circuit board (PCB) and major
subassembly level. Once you isolate a suspected PCB, follow the procedures in the Repair and
Disassembly section, to replace the PCB with a known good PCB. Check to see if the symptom
disappears and that the monitor passes all performance tests. If the symptom persists, swap back the
replacement PCB with the suspected malfunctioning PCB (the original PCB that was installed when
you started troubleshooting) and continue troubleshooting as directed in this section.
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