4–16 Troubleshooting
Mech Driver Hot *
Instruction Indication Yes No
1. Cycle power: Turn printer off.
Wait 15 seconds. Turn printer
on.
“Mech Driver Hot * ” message. Go to step 2. Return printer to
normal operation.
2. Observe operation of card
fan: check for air flow at the
bottom of card cage.
Card cage fan operates. Go to step 3. Replace the card
cage fan.
3. Observe operation of cabinet
exhaust fan: check for air
flow out of the grid at the rear
of the printer.
Cabinet exhaust fan operates. Go to step 4. Replace the
cabinet exhaust
fan.
4. Observe operation of power
supply fan above the on/off
switch at the rear of the
printer.
Power supply fan operates. Go to step 5. Replace power
supply.
5. Press the control panel
switch that clears fault
indications.
“Mech Driver Hot * ” message. Go to step 6. Return printer to
normal operation.
6. Run a diagnostic self–test
(page 4–37).
“Mech Driver Hot * ” message. Replace
mechanism driver
board.
Return printer to
normal operation.
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