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
Step
1
Is there continuity across
the fuser lamp wires?
2
Remove the TCO. Is there
continuity across the
TCO?
3
Is there continuity across
the lamp?
4
Replace the LVPS. Did
LVPS replacement
resolve problem?
5
Did replacement of the
engine board resolve the
problem?
False Paper Empty Indication
Paper LED on when
Step
paper is present in
the input tray
1
Check the paper
present sensor
actuator for breakage
or binding. Is there
breakage or binding?
Yes
Go to step 4.
Go to step 3.
Go to step 4.
Problem
Resolved.
Problem
resolved.
Yes
Replace the paper
present actuator.
No
Replace the TCO.
Problem resolved.
Replace the lamp.
Problem resolved.
Replace the engine
board. Go to step 5.
Replace the engine
board. Go to step 5.
Replace the controller
board.
No
Replace the
sensor board.
Diagnostic Aids
2-13