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Diagnostic Aids 2-13
4510-001
The LED blinks once then all other LEDs blink
(Open Fuser Error)
This message occurs when the printer detects no change of
temperature in the fuser
False Paper Empty Indication
Step Yes No
1 Is there continuity across
the fuser lamp wires?
Go to step 4. Replace the TCO.
Problem resolved.
2 Remove the TCO. Is there
continuity across the
TCO?
Go to step 3. Replace the lamp.
Problem resolved.
3 Is there continuity across
the lamp?
Go to step 4. Replace the engine
board. Go to step 5.
4 Replace the LVPS. Did
LVPS replacement
resolve problem?
Problem
Resolved.
Replace the engine
board. Go to step 5.
5 Did replacement of the
engine board resolve the
problem?
Problem
resolved.
Replace the controller
board.
Step
Paper LED on when
paper is present in
the input tray
Yes No
1 Check the paper
present sensor
actuator for breakage
or binding. Is there
breakage or binding?
Replace the paper
present actuator.
Replace the
sensor board.