AL-840 (serv.man7). AL800 840 Service Manual-Simulation codes - Sharp Copying Equipment Service Manual (repair manual). Page 10

1 - 1

Purpose

Operation test/check

Function
(Purpose)

Used to check the operation of the scanner (reading) unit and its control circuit.

Section

Optical (Image scanning)

Item

Operation

Operation/
Procedure

Set the copy magnification ratio to any desired level and press the start button. The scanner scans (reads) once
at the scanning speed corresponding to the set copy magnification ratio. 
At that time, the operation of the scanner home position sensor (MHPS) can be checked wit the photoconductor
lamp. 
When the scanner is at the home position, that is, when the scanner home position sensor (MHPS) detects the
scanner, the photoconductor lamp lights up.

Note

5 - 1

Purpose

Operation test/check

Function
(Purpose)

Used to check the operation of the operation panel display lamps and the control circuit.

Section

Operation (Display/Operation key)

Item

Operation

Operation/
Procedure

All the lamps and value displays on the operation panel are lighted for 5 sec.

Note

5 - 2

Purpose

Operation test/check

Function
(Purpose)

Used to check the operation of the heater lamp and its control circuit. Used to check the operation of the fan
motor and its control circuit.

Section

Fixing (Fusing)

Item

Operation

Operation/
Procedure

The heater lamp repeat ON for 500msec and OFF for 500msec each 5 times.
During this time, the fan motor rotates.

Note

5 - 3

Purpose

Operation test/check

Function
(Purpose)

Used to check the operation of the copy lamp and its control circuit.

Section

Optical (Image scanning)

Item

Operation

Operation/
Procedure

The copy lamp is lighted for 5 sec.

Note

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