IBM 3745 Problem Determination Manual page 55

ALARM A4: POWER SUBSYSTEM: AC CONTROL REPORTING ERROR
Cause: -Power control
Action: If the problem recurs:
ra
and give reference code.
ALARM AS: ASK SERVICE PERSONNEL TO REPLACE BATTERY
Cause:
Action:
Battery
Power control
ra
and give reference code.
ALARM A6: POWER SUBSYSTEM: INTERNAL CLOCK DOWN
Cause: Internal clock
Power control
hhmmss ref code
hhmmss ref code
hhmmss ref code
Action: If it is the first installation,
~et
the time and the date with the TIM function of the MOSS.
Otherwise,
ra
and give reference code.
ALARM A7: COOLING PROBLEM, hhmmss ref code
Cause:
Action:
Blower
Airflow detector
Power control -
• Check that air vents are not obstructed.
• Check for dirty filter (on models 210, 310, 410, and 610).
• If alarm AD (COOLING PROBLEM CORRECTED) -is not generated,
ra
and give
reference code.
Note: If this problem is not corrected, the whole machine is automatically powered off.
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IBM 3745 Communication Controller: Problem Determination Guide
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