Read Sharp MX-6201N / MX-7001N (serv.man20) Service Manual online
MX-7001N SELF DIAG AND TROUBLE CODE 8 – 29
L4-39
Machine ventilation fan right lock
L4-40
Ozone fan 1 lock
L4-41
Ozone fan 2 lock
L4-42
Ozone fan 3 lock
L4-43
Paper exit cooling fan center lock
L4-44
Power cooling fan 2 lock
L4-50
BK process cooling fan lock error
L4-51
Color process cooling fan lock error
L6-10
Polygon motor lock detection
L8-01
No full wave signal
Trouble content
When the machine ventilation fan right is operated,
the fan operation signal is not detected within the
specified time.
the fan operation signal is not detected within the
specified time.
Section
PCU
Case 1
Cause
Fan connector disconnection
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan.
PCU PWB and the fan.
Case 2
Cause
Fan does not rotate because of other trouble.
Check and
remedy
remedy
Use SIM6-2 to check that the fan is actually
rotating.
rotating.
Trouble content
When the ozone fan 1 is operated, the fan
operation signal is not detected within the specified
time.
operation signal is not detected within the specified
time.
Section
PCU
Case 1
Cause
Fan connector disconnection
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan.
PCU PWB and the fan.
Case 2
Cause
Fan does not rotate because of other trouble.
Check and
remedy
remedy
Use SIM6-2 to check that the fan is actually
rotating.
rotating.
Trouble content
When the ozone fan 2 is operated, the fan
operation signal is not detected within the specified
time.
operation signal is not detected within the specified
time.
Section
PCU
Case 1
Cause
Fan connector disconnection
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan.
PCU PWB and the fan.
Case 2
Cause
Fan does not rotate because of other trouble.
Check and
remedy
remedy
Use SIM6-2 to check that the fan is actually
rotating.
rotating.
Trouble content
When the ozone fan 3 is operated, the fan
operation signal is not detected within the specified
time.
operation signal is not detected within the specified
time.
Section
PCU
Case 1
Cause
Fan connector disconnection
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan.
PCU PWB and the fan.
Case 2
Cause
Fan does not rotate because of other trouble.
Check and
remedy
remedy
Use SIM6-2 to check that the fan is actually
rotating.
rotating.
Trouble content
When the paper exit cooling fan center is operated,
the fan operation signal is not detected within the
specified time.
the fan operation signal is not detected within the
specified time.
Section
PCU
Case 1
Cause
Fan connector disconnection
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan.
PCU PWB and the fan.
Case 2
Cause
Fan does not rotate because of other trouble.
Check and
remedy
remedy
Use SIM6-2 to check that the fan is actually
rotating.
rotating.
Trouble content
When the power cooling fan 2 is operated, the fan
operation signal is not detected within the specified
time.
operation signal is not detected within the specified
time.
Section
PCU
Case 1
Cause
Fan connector disconnection
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan.
PCU PWB and the fan.
Case 2
Cause
Fan does not rotate because of other trouble.
Check and
remedy
remedy
Use SIM6-2 to check that the fan is actually
rotating.
rotating.
Trouble content
In the BK process cooling fan operation, the fan
operation signal is not detected within the specified
time.
operation signal is not detected within the specified
time.
Section
PCU
Case 1
Cause
Because of disconnection of the fan connector or
other trouble, the fan does not rotate.
other trouble, the fan does not rotate.
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan.
PCU PWB and the fan.
Trouble content
In the color process cooling fan operation, the fan
operation signal is not detected within the specified
time.
operation signal is not detected within the specified
time.
Section
PCU
Case 1
Cause
Because of disconnection of the fan connector or
other trouble, the fan does not rotate.
other trouble, the fan does not rotate.
Check and
remedy
remedy
Check the harness and the connector between the
PCU PWB and the fan. After turning on the power,
check to confirm that the fan is rotating.
PCU PWB and the fan. After turning on the power,
check to confirm that the fan is rotating.
Trouble content
It is judged that the LSU polygon motor lock signal
is not outputted, and the lock signal is checked
after 15 sec from starting rotation of the polygon
motor and it is judged that the polygon motor does
not rotate properly.
is not outputted, and the lock signal is checked
after 15 sec from starting rotation of the polygon
motor and it is judged that the polygon motor does
not rotate properly.
Section
PCU
Case 1
Cause
Disconnection of the LSU connector or the LSU
inside harness, or breakage
inside harness, or breakage
Check and
remedy
remedy
Check connection of the harness and the
connector.
connector.
Case 2
Cause
Polygon motor trouble, LSU PWB trouble
Check and
remedy
remedy
Use SIM61-1 to check the operation of the polygon
motor.
Replace the LSUcnt PWB. Replace the LSU.
motor.
Replace the LSUcnt PWB. Replace the LSU.
Trouble content
No full wave signal is detected.
Section
PCU
Case 1
Cause
Harness trouble
Check and
remedy
remedy
Check connection of the harness and the
connector.
connector.
Case 2
Cause
Power unit trouble
Check and
remedy
remedy
Replace the power unit.
Case 3
Cause
PCU PWB trouble
Check and
remedy
remedy
Replace the PCU PWB.
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