IBM 6400 Maintenance Information Manual page 81

Operator Panel
Message
062 EXHAUST FAN
FAULT
Table 4. Message List
Explanation
Sensors cannot
detect current in the
fan circuit.
Corrective Action
1. Cycle power. If the message appears,
press Stop.
2. If the message occurs on a pedestal
model, check that the correct operator
panel is installed. The operator panel for
a pedestal model has resistors R18 and
R19 next to the operator panel cable
connector.
3. Check that the exhaust fan is connected
to exhaust fan cable connector J307.
4. Power off the printer. Remove the paper
guide assembly. Disconnect connector
P107 from the CMX controller board. Test
connector P107/EHF for shorts or opens.
(Refer to the Main Wire Harness Test
Tables on page 291.) Replace
components that fail test.
5. Make sure connector P107/EHF has a
good connection at J107 on the CMX
controller board.
6. Inspect for obstructions of airways and
vents. Check for items beneath the
printer blocking cabinet vents. Make sure
cabinet exhaust fan vents are not
blocked.
7. Power on the printer. Check for fan
operation. If the message appears or the
fan doesn't work, replace the exhaust fan.
8. Power on the printer. If the message
appears, replace the CMX controller
board. Record the message and return it
with the defective board.
Message List
81