AR-M35, AR-M450 (serv.man105). Additional trouble codes - Sharp Copying Equipment Technical Bulletin (repair manual). Page 2

ARE302

Sharp Electronics (UK) Ltd., Technical Services Group

MAIN

SUB

Cause.

Copy lamp illumination malfunction (short circuit, improper installation).
Installation of the flat cable to the CCD unit has not been carried out
properly.
Connection malfunction of the CL lead wire for the copy lamp.
The mirrors, lens, and or standard white plate are dirty.
The copy lamp power supply output is not correct.
The CCD unit is not installed properly.
The CCD unit is malfunctioning.
The SCANNER PWB is malfunctioning.

Confirmation
and action.

Clean the mirrors, lens, and standard white plate.
Check the illumination light quantity of the copy lamp (Sim. 5-3).
Check the CCD unit.
Check the SCANNER PWB.

Content.

Console finisher punch DUST sensor trouble.

Details.

Punch DUST sensor detection trouble.

When detection by the punch DUST sensor cannot be carried out properly.

F1

39

Cause.
Confirmation
and action.

The sensor is damaged.
The harness is disconnected or cut.
The punch control PWB is malfunctioning.

Content.

Console finisher punch power down trouble.

Details.

When a punch unit power down has been detected.

When a punch unit power down has been detected even though 24 V of
power is being supplied to the punch unit.

F1

40

Cause.
Confirmation
and action.

The harness is disconnected or cut.
The punch control PWB is malfunctioning.

Content.

Fusing thermostat malfunction detection.

The temperature transition of the fusing thermostat is malfunctioning
(wrapped copy paper).

Details.
Cause.

Copy paper is wrapped around the fusing roller.
The fusing pawl is malfunctioning.
The fusing unit is not installed properly.

H5

02

Confirmation
and action.

Check for a copy paper jam in the fusing section (wrapped copy paper, etc.).
Check the installation of the fusing unit.  Check the fusing pawl.
Eliminate the trouble with Sim. 14.

Content.

SRAM memory check sum error (ICU).

Details.

SRAM memory check sum error in the MFPC.

Cause.

SRAM malfunction.
Runaway control circuit due to noise.
SRAM access circuit malfunction on the ICU PWB.

U2

22

Confirmation
and action.

Initialize the one-touch dial registered in the SRAM, the FAX software
switch, etc.
Recovery is impossible because the content of the register has been
deleted.
Reset the U2 trouble using Sim. 16.
Replace the ICU PWB.