Visual Inspection - GE MAC 800 Service Manual

Visual Inspection

2031504-159D
A thorough visual inspection of the equipment can save time. Small
things—disconnected cables, foreign debris on circuit boards, missing
hardware, loose components—can frequently cause symptoms and
equipment failures that may appear to be unrelated and difficult to
track.
NOTE
Take the time to make all the recommended visual checks before
starting any detailed troubleshooting procedures
If the area is...
I/O Connectors and Cables
AC power cord
Interface cables
Circuit boards
Ground wires/Wiring
Fasteners
Power source
Keyboard
LCD display filter
Battery pack
SD card
MAC™ 800
Look for...
Fraying or other damage

Bent prongs or pins

Cracked housing

Loose screws in plugs

Excessive tension or wear

Loose connection

Strain reliefs out of place

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
Loose wires or ground strap connections

Faulty wiring

Wires pinched or in vulnerable position

Loose or missing screws or other hardware, especially
fasteners used as connections to ground planes on PCBs
Faulty wiring, especially AC outlet

Circuit not dedicated to system

NOTE
Power source problems can cause static discharge,
reading problems, and discharge.
Cuts or cracks in the keyboard membrane

Unreadable labels

Scratches or cracks in the display filter (transparent part of
keyboard bezel) that impair viewing
Cracks, swells, or leaks in the battery casing

Dirt, scratches, or debris on contacts

Cracks

Dirt, scratches, or debris on contacts

Troubleshooting
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