Doc. # 5016
BM-185D/285D/286D
Rev. A
Operation and Service Manual
6.2 FAULT ISOLATION
When the program is executing on the PC there are two small dark green boxes in the lower left
hand of the display.
The SC-770 box should flash light green every second indicating that the SC-770 has sent data to
the PC.
The Scale box should flash light green upon receiving data from the scale controller. This occurs
when the door is closed.
If the system fails to operate properly, note all anomalies, and try to determine if or how they are
related. This will usually isolate the problem to some degree, and reduce the time required to
repair the system. Always perform a thorough visual inspection of the suspect assemblies,
looking for loose connectors, pinched and broken wires, burned components, and signs of
overheating. If nothing is found during the physical inspection, locate the problem area in the
following paragraphs, and isolate the defective assembly using the appropriate procedure.
NOTE
:
Always turn the power off when connecting or disconnecting components or cables.
6.3 COMPUTER
Use standard troubleshooting procedures on the PC.
6.4 SIGNAL INTERFACE ASSEMBLY AND DETECTORS
The detectors and detector electronics are located behind the chamber liner. This liner is very
heavy and awkward to remove and reinstall. It is recommended that TSA be contacted prior to
doing any liner removal.
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