GE MAC 2000, Service Manual

Page: 137 / 184

Troubleshooting
If the equipment is not working properly, consider the following:
• Is the device turned on?
• Have there been any changes in the use, location, or environment of the equipment
that could cause the failure?
• Has the equipment hardware or software been modified since the last use?
• Is operator error the cause of the problem?
Try to repeat the scenario exactly and compare that to the proper operation of the
equipment described in the manual.
• Is the battery installed?
• When connected to the AC wall outlet, does the green AC power light glow?
Visual Inspection
A thorough visual inspection of the equipment can save time. Small things, such as
disconnected cables, foreign debris on circuit boards, missing hardware, or loose
components, can frequently cause symptoms and equipment failures that may seem
to be unrelated and difficult to track.
NOTE:
Take the time to make all the recommended visual checks before starting any
detailed troubleshooting procedures.
Visual Inspection Checklist
Area
Look for the following problems
I/O connectors and
cables
AC power cord
• Fraying or other damage
• Bent prongs or pins
• Cracked housing
• Loose screws in plugs
Interface cables
• Excessive tension or wear
• Loose connection
• Strain reliefs out of place
Circuit boards
• Moisture, dust, or debris (top and bottom)
• Loose or missing components
• Burn damage or smell of over-heated components
• Socketed components not firmly seated
• PCB not seated properly in edge connectors
• Solder problems: cracks, splashes on board, incomplete
feedthrough, prior modifications or repairs
Ground wires/wiring
• Loose wires or ground strap connections
• Faulty wiring
• Wires pinched or in vulnerable position
2053535-003C
MAC™ 2000 ECG Analysis System
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