Posted on Dec 01, 2010

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My photocopier is not working and its blinking L 4 signal please advise me what could be the problem?

1 Answer

shelmnot

Expert 40 Answers
Posted on Dec 02, 2010

shelmnot

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Joined: Dec 02, 2010

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L4 01 Content Main motor lock
Detail The main motor encoder pulse is
not detected for 400msec.
Cause Main motor defect
Harness disconnection between
the MCU PWB and the main
motor.
Control circuit failure

L4 01 Check and
remedy
Check the main motor operation
with SIM 25-1.
Check the harness and the
connector between the MCU PWB
and the main motor.
10 Content Job separator motor trouble
Details When the home is not detected
within 2.5 sec after the job
separator tray starts to move
upwards.
Cause The job separator upper limit
detection sensor is defective.
The job separator motor is
defective.
The job separator motor periphery
circuit is defective.
The condition of the MCU PWB
JP5 is wrong.
Check and
countermeas
ure
Check the job separator operation
by means of SIM3-2 and 4.
Check the harnesses and
connectors.
Check whether the condition of
the MCU PWB JP5 is correct.

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