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AR-BC320 TROUBLESHOOTING 11 - 21

Main

code

Sub

code

Title

Paper feed motor lock trouble

L4 02 Display Lamp/Message

Phenomenon Detail In warm-up, or in canceling

a jam, the paper feed

motor is rotated, and the

lock signal is not detected

within 1sec.

Section Paper feed

Case 1 Cause Paper feed motor trouble,

disconnection of the

harness between the PCU

PWB and the paper feed

motor, control circuit

trouble

Check &

Remedy

Use SIM 6-1 to check the

paper feed motor

operation. Check the

harness and the connector

between the PCU PWB

and the paper feed motor.

Main

code

Sub

code

Title

Transfer belt lift motor trouble

L4 06 Display Lamp/Message

Phenomenon Detail When the belt motor lifts

up or down, the change in

the belt home position

sensor characteristics is

not detected within the

specified time.

(When the motor lifts up,

the lower limit sensor

remains ON after the

specified time.)

(When the motor lifts

down, the lower limit

sensor does not turn on

after the specified time.)

Section Paper feed

Case 1 Cause Belt lift motor trouble,

disconnection of the

harness between the PCU

PWB and the belt lift

motor, control circuit

trouble

Check &

Remedy

Use SIM 6-1 to check the

belt lift motor operation.

Check the harness and the

connector between the

PCU PWB and the belt lift

motor.

Main

code

Sub

code

Title

Transfer belt motor trouble

L4 07 Display Lamp/Message

Phenomenon Detail 1) Before driving the drum,

the calibration plate is

opened with the

process control BK

sensor, and light is

emitted with the gain

value of 0 and with the

light emitting quantity

fixed to 120. The

average of ten light

quantities repeats to be

5 or less for 3 times

continuously.

2) Immediately after

driving the drum, the

calibration plate is

opened with the

process control BK

sensor, and one whole

turn of the belt surface

is scanned with the gain

value of 0 and with the

light emitting quantity at

the optimum value (120

– 50). The difference

between the max. value

and the min. value of

the scanned data is 5 or

less.

Section Paper feed

Case 1 Cause Transfer belt motor

connector disconnection,

process control sensor

connector disconnection,

process control BK sensor

defect, defective

connection of the harness

between the PCU PWB

and the transfer belt motor,

defective control circuit

Check &

Remedy

Check the transfer belt

motor operation with

SIM25-1. Check the

process control sensor

operation with SIM44-2.

Check the harness and the

connector between the

PCU PWB and the transfer

belt motor.

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[11] TROUBLESHOOTING 1
6. Details 3

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