IBM 6400 series Maintenance Manual page 87

Cycle power. If the message appears, press Stop.
2. Power off the printer. Remove the paper guide assembly or pedestal top cover.
Disconnect connector P107 from the CMX controller board. Test connector
P107/HBF for shorts or opens. (Refer to the Main Wire Harness Test Tables on
page 297.)
Replace components that fail test.
3. Make sure P107/HBF has a good connection at J107 on the CMX controller
board.
Connect P107 to the CMX controller board.
4. Inspect for obstructions of airways and vents.
Remove obstructions.
5. Power on the printer.
If the message appears, replace the CMX controller board. Record the
message and return it with the defective board.
069 DATA CLEARED
1. This message appears when data are cleared out of printer after Cancel key has
been pressed.
No action required.
080 POWER SUPPLY HOT
NOTE: The printer has sensor circuits that sample the operating
1. Inspect printer environment for severity. (See NOTE above.)
Troubleshooting
temperature of key components of the power supply. When higher
than normal temperatures are sensed, print speed is automatically
reduced. If the printer runs at reduced speed for an extended period
of time, the POWER SUPPLY HOT message is sent to the LCD and
printing stops, allowing printer components to cool down. Pressing
the Start key resumes the print task. Check the operating
environment. A severe environment is one with an ambient
temperature at or above above 40 Celsius (104 Fahrenheit) or is
dirty enough to create blockage of the cabinet fan vents. The printer
must never be run at ambient temperatures greater than 40 Celsius
(104 Fahrenheit). If the printer is located in such an environment,
relocate it to a cooler, cleaner area or reduce the size and duration
of the print jobs.
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