AR-405 (serv.man13). AR405 Service Manual-Trouble Code List - Sharp Copying Equipment Service Manual (repair manual). Page 10

Trouble code

Description

Main 
code

Sub

code

U6

51

Content Non-support trouble in automatic

detection of option connection (LCC unit)

Detail

In automatic detection of option
connection, a non-support LCC unit is
detected.

Cause

A non-support LCC unit is connected to
the copier. 

Check
and
remedy

Check the LCC unit.

U7

00

Content RIC communication trouble
Detail

Communication error with RIC
Error in communication line test after
turning on the power or exiting from SIM.

Cause

Improper connection or disconnection of
connector and harness
RIC control PWB trouble
Control PWB (ICU) trouble
Malfunction caused by noises

Check
and
remedy

Turn off/on the power to cancel the
trouble.

U9

00

Content U9–

**

: ICU-OPE 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.

90

Content U9–

**

: ICU-OPE communication

trouble (OPE 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.

Trouble code

Description

Main 
code

Sub

code

EE

EL

Content Auto developing tone adjustment trouble

(overtoner error)

Detail

A sample data is less than 0 when auto
developing adjustment is executed.

Cause

Toner density sensor defective
Charging voltage or developing voltage
improper.
Toner density improper
Developing unit defective
PCU PWB defective

Check
and
remedy

Make auto developing adjustment with
SIM25-2.

EU

Content Auto developing adjustment trouble

(undertoner error)

Detail

A sample data is less than 99 when auto
developing adjustment is executed.

Cause

Toner density sensor defective
Charging voltage or developing voltage
improper
Toner density improper
Unit defective
PCU PWB defective

Check
and
remedy

Make auto developing adjustment with
SIM25-2.

FC

00

Content ASK/IrDA modulation LSI reset error
Detail

Though the RESET signal pulse is sent
to the ASK/IrDA modulation LSI, the
power signal is not turned ON.

Cause

1)  ICU main PWB defect
2)  ASK/IrDA modulation LSI/Clock
oscillator defect

Check
and
remedy

Perform the self diag with SIM 68-01.
Replace the ICU main PWB.

01

Content ASK/IrDA switch error
Detail

Though the ASK/IrDA switch command
is sent to the ASK/IrDA modulation LSI,
the AI signal is not changed.

Cause

1)  ICU main PWB defect
2)  ASK/IrDA modulation LSI/Clock
oscillator defect

Check
and
remedy

Perform the self diag with SIM 68-01.
Replace the ICU main PWB.

PF

00

Content RIC copy inhibition signal received
Detail

Copy inhibition command received from
RIC (host)

Cause

Judged by the host.

Check
and
remedy

Notice to the host

FA

01

Content A2 board self diag error (memory error)
Detail

The memory error notice is received
from the A2 board.

Cause

A memory error occurred on the A2
board.

Check
and
remedy

Check the details of the error with SIM
69-02. Replace the A2 board.

AR-405

11 – 9

1/21/1999