AR-405 (serv.man13). AR405 Service Manual-Trouble Code List - Sharp Copying Equipment Service Manual (repair manual). Page 6

Trouble code

Description

Main 
code

Sub

code

F2

39

Content Process thermistor breakdown
Detail

The process thermistor is open.

Cause

Process thermistor abnormality
Improper connection of the process
thermistor bar
PCU PWB abnormality

Check
and
remedy

Check connection of the process
thermistor harness and connector.
Check the PCU PWB.

F3

12

Content Upper cassette lift-up trouble
Detail

UPED does not turn on within the
specified time.
ULUD does not turn on within the
specified time.

Cause

UPED or ULUD defective
Upper cassette lift-up motor defective
Improper connection of harness
between PCU PWB, lift-up unit, and
paper feed unit.

Check
and
remedy

Check UPED, ULUD and their harness
and connector.
Check lift-up unit.

22

Content Lower cassette lift-up trouble
Detail

LPED does not turn on within the
specified time.
LLUD does not turn on within the
specified time.

Cause

LPED or LLUD defective
Lower cassette lift-up motor defective
Improper connection of harness
between PCU PWB, lift-up unit, and
paper feed unit.

Check
and
remedy

Check LPED, LLUD, their harnesses
and connectors.
Check lift-up unit.

F9

00

Content F9–

**

: ICU-PRT communication

trouble (ICU detection)

Detail

Communication setup error,
framing/parity/protocol error

Cause

Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Connector pin breakage of the motor
PWB of the slave unit PWB
Slave unit ROM trouble. no ROM, ROM
reverse insertion, ROM pin breakage

Check
and
remedy

Connect the connector of the slave unit
PWB and the ICU PWB.
Check the connection and the harness.
Check the grounding of the copier.
Check the ROM of the slave unit PWB.

01

Content PRT DRAM trouble
Detail

Option printer PWB DRAM trouble
(Check when turning on the power.)

Cause

DRAM module is broken and access
cannot be made.
DRAM module improper installation

Check
and
remedy

Check with SIM 67-1.

Trouble code

Description

Main 
code

Sub

code

F9

03

Content Network card trouble.
Detail

Network card self test trouble.

Cause

Network card defecft.
Printer PWB defect.
Network card connector connection
defect.

Check
and
remedy

Check the Network card connector.
Replace the printer PWB.
Replace the Network card.

04

Content Printer program error.
Detail

Program data trouble in the option
printer board.

Cause

Flash memory data is destroied.

Check
and
remedy

Replace or rewrite the Flash memory.
Replace the printer PWB.

05

Content Short of memory capacity on the ICU

PWB

Detail

Total memory is less than 16MB on the
ICU PWB.

Cause

Memory defect
SIMM memory connector connection
defect
ICU PWB defect
Wrong type SIMM memory is installed

Check
and
remedy

Replace the ICU PWB
Replace the memory
Check the memory connector

10

Content PRT SCSI LSI abnormality
Detail

An error occurred in SCSI
communication with the option printer
board.

Cause

SCSI LSI abnormality
ISU PWB abnormality
SCSI connector improper connection

Check
and
remedy

Replace the printer PWB.
Check the SCSI connector. 
Replace the ISU PWB.

90

Content F9–

**

: ICU-PRT communication

trouble (PRT detection)

Detail

Communication setup
error/framing/parity/protocol error

Cause

Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Slave unit PWB mother board connector
pin breakage

Check
and
remedy

Check the slave unit PWB and the ICU
PWB connector connection.
Check the copier earth.

H2

00…HL1
01…HL2

Content Thermister open

Fusing unit not installed

Detail

Thermister is open (more than 4.6-V
input voltage is detected).
Fusing unit not installed

Cause

Thermister defective
Control PWB defective
Improper connection of fusing connector
AC power supply defective
Fusing unit not installed

Check
and
remedy

Check harness and connector between
thermister and control PWB.
Clear the display of self-diagnostics with
SIM14.

AR-405

11 – 5

1/21/1999