IBM 3745 Problem Determination Manual page 52

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ALARM 98: TEMPERATURE RETURNED TO NORMAL ON CCU-x hhmmss ref code
Cause:
Action:
The CCU temperature returned to normal: The cause of alarm 95 disappeared.
No action required.
ALARM 99: POWER SUBSYSTEM: PERMANENT OVERHEATING ON CCU-x
Cause:
Action:
Air filter
Cooling fan
Power supply
Power control
hhmmss ref code
• Check that air vents are not obstructed and that the room temperature is correct.
co
and give reference code.
ALARM 9B: THERMAL DETECTOR REPORTING ERROR ON CCU-x
Cause:
Action:
Thermal detector
Power control
•
co
and give reference code .
ALARM 9C: POWER SUPPLY DOWN
(For models 130, 150, 160, and 170.)
ALARM 9C: UNDEFINED ADAPTER POWER SUPPLY DOWN
(For models 210, 310, 410, and 610.)
Cause: Power supply
hhmmssref code·
hhmmss ref code
hhmmss ref code
Power on was performed less than 10 seconds after power off.
Chapter·1. Alarms and Alerts
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