Diagnostic information 2-73
4500
Engine board (continued) 1. All operator panel lights turn on
solid.
2. All operator panel lights turn off.
3. Lights then sequence on and off
one at a time starting with the
Press Button light.
After 2 complete light sequences,
the Ready light turns on solid.
4. The cooling fan comes on.
5. The fuser lamp comes on.
6. The drive motor runs.
7. The printhead motor runs.
8. The printer cycles down into
standby mode/ready.
If the operator panel lights come on
solid and never turn off, replace the
controller card and/or controller
cable.
If some lights are on or flashing, see
the “Status information ” on
page 2-3 to determine a course of
action and/or replace the engine
board.
FRU Action
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