11-3
Symptom Possible Cause Corrective Action
When BAS 100B is turned-on, fans do not run Not plugged in Plug in!
Blown fuse Replace fuse
Defective power cord Replace cord
Defective power switch Replace switch
Defective fans Replace fans
Defective power
supply
Check power supply
Call BAS customer service
Self-Test Diagnostic Failures:
Any ROM error, error in RAM 1,3,4,6 or
BANK SWITCH ERROR
Defective CPU board Replace CPU board. Call BAS
Customer Service
Error in RAM 5 Defective I/O board Replace I/O board. Call BAS
Customer Service
Self-Test reads “RAM OK, ROM OK” and
doesn’t continue on to analog test
40 pin jumper between
analog and I/O boards
not making contact
Check connection, plug in
Error in 1 or 2 analog tests Small offset is present
in analog system. This
may be caused by
temperature changes or
long term calibration
drift.
No cause for undue concern.
Call BAS Customer Service for
advice/repair.
Error in several analog ranges Power supply voltages
out of tolerances
Test power supply DC. Make
sure all output cables are
disconnected before testing.
Defective analog board Replace analog board
Call BAS Customer Service.
Operation appears to be normal but no data is
acquired
Poor connections at
either end of cell cable
Check cell cable connections
Cell lead defective Replace cell lead
Call BAS Customer Service
Random malfunctions Static discharges Install anti-static mat.
Power line
disturbances
Connect to a “clean” power
line.
Overheating Clean filters and check fans
(don’t block cabinet vents!)
Poor connections at
either end of cell lead
Check lead connections
Defective cell leads Replace cell lead
Call BAS Customer Service.
The following Analog errors simultaneously
Error in ranges 5,4,3
Bipolarity
CC discharge relay
sticking
Replace relay
Call BAS Customer Service
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