DOWNLOAD Sharp AL-1622 (serv.man13) Service Manual ↓ Size: 35.36 KB | Pages: 6 in PDF or view online for FREE

AL-1611/AL-1622

TROUBLE CODE LIST

10 – 5

L3

00

Cause

Mirror unit 
Mirror home position sensor defect 
MCU PWB defect Scanner wire discon-
nection

Check and 
remedy

Check the scanning operation with SIM 
1-1.

L4

01

Content

Main motor lock

Detail

The main motor encoder pulse is not 
detected for 400msec.

Cause

Main motor defect 
Harness disconnection between the 
MCU PWB and the main motor. 
Control circuit failure

Check and 
remedy

Check the main motor operation with 
SIM 25-1. 
Check the harness and the connector 
between the MCU PWB and the main 
motor.

10

Content

Job separator motor trouble

Details

When the home is not detected within 
2.5 sec after the job separator tray starts 
to move upwards.

Cause

The job separator upper limit detection 
sensor is defective. 
The job separator motor is defective. 
The job separator motor periphery circuit 
is defective. The condition of the MCU 
PWB JP5 is wrong.

Check and 
countermea-
sure

Check the job separator operation by 
means of SIM3-2 and 4. 
Check the harnesses and connectors. 
Check whether the condition of the MCU 
PWB JP5 is correct.

L6

10

Content

Polygon motor lock

Detail

The lock signal (the specified rotation 
speed signal) is not supplied within the 
specified time (about 6 sec) after starting 
the polygon motor rotation.

Cause

LSU connector disconnection or harness 
disconnection in the LSU.

Check and 
remedy

Check the operation of the polygon 
motor with SIM 25-10. 
Check the harness and the connector 
connection. LSU replacement

L8

01

Content

Zero cross pulse (FW) trouble

Detail

Zero cross pulse width is shifted by 55Hz 

m

 10% or more.

Cause

MCU PWB defect Power supply unit 
breakdown

Check and 
remedy

Check the harness and the connector. 
MCU PWB replacement Power supply 
unit replacement

U2

04

Content

EEPROM serial communication error

Detail

Error in communication with EEPROM

Cause

EEPROM failure 
Installation of uninitialized EEPROM 
MCU PWB EERPOM access circuit fail-
ure

Check and 
remedy

Check that the EEPROM is properly set. 
To prevent against loss of counter/
adjustment values, record the values 
with simulation. 
U2 trouble cancel with SIM 16 MCU 
PWB replacement

Main
code

Sub
code

Detail of trouble

U2

11

Content

Counter check sum error

Detail

Counter check sum value stored in the 
EEPROM is abnormal.

Cause

EEPROM failure 
Control circuit hung up by noises 
MCU PWB EEPROM access circuit 
defect

Check and 
remedy

Check that the EEPROM is properly set.  
To prevent against loss of counter/
adjustment values, record the values 
with simulation. 
U2 trouble cancel with SIM 16 MCU 
PWB replacement

12

Content

Adjustment value check sum error 
(EEPROM)

Detail

Adjustment value data area check sum 
error

Cause

EEPROM failure 
Control circuit hung up by noises 
MCU PWB EEPROM access circuit fail-
ure

Check and 
remedy

Check that the EEPROM is properly set. 
To prevent against loss of counter/
adjustment values, record the values 
with simulation. 
U2 trouble cancel with SIM 16 MCU 
PWB replacement

40

Content

CRUM communication error

Detail

Toner cartridge CRUM data read error

Cause

A toner cartridge of a different destina-
tion is installed. 
EEPROM trouble 
Check the destination setup. 
Toner cartridge CRUM PWB trouble 
MCU PWB trouble 
CRUM connector disconnection

Check and 
remedy

Install a specified toner cartridge. 
Check the SIM 26-6 setup. 
Replace the EEPROM. Replace the 
toner cartridge. 
Replace the MCU PWB. 
Check connection of the CRUM connec-
tor. 
Execute SIM 16.

U3

29

Content

Mirror base home position error

Detail

Home position is not detected when 
starting mirror base shift.

Cause

Mirror unit defect 
Mirror home position sensor defect 
MCU PWB decfect 
Scanner wire disconnection

Check and 
remedy

Check the scanning operation with SIM 
1-1.

U9

00

Content

Communication trouble between MCU 
and OPE (OPE detection)

Detail

Communication setup error, framing, 
parity, protocol error

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine. 
Check the ROM of the operation control 
PWB.

Main
code

Sub
code

Detail of trouble

AL-1611/AL-1622

TROUBLE CODE LIST

10 – 6

U9

80

Content

Operation control PWB communication 
trouble (Protocol)

Detail

Communication trouble between 
MCU and the operation control 
PWB (Protocol error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

81

Content

Operation control PWB communication 
trouble (Parity)

Detail

Communication trouble between MCU 
and the operation control PWB (Parity 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

82

Content

Operation control PWB communication 
trouble (Overrun)

Detail

Communication trouble between MCU 
and the operation control PWB (Overrun 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

84

Content

Operation control PWB communication 
trouble (Framing)

Detail

Communication trouble between MCU 
and the operation control PWB (Framing 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

88

Content

Operation control PWB communication 
trouble (Time-out)

Detail

Communication trouble between MCU 
and the operation PWB (Time-out error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

Main
code

Sub
code

Detail of trouble

U95

Content

Operation control PWB communication 
error

Detail

Communication error between the oper-
ation control PWB and the MCU PWB 
(Detected by the OPE-PWB)

Cause

Disconnection or reverse connection of 
the flat cable between the Operation 
control PWB and the MCU PWB. 
Operation control PWB trouble 
MCU PWB trouble 
Connector trouble of the operation con-
trol PWB and the MCU PWB

Check and 
remedy

Check insertion of or replace the flat 
cable between the operation control 
PWB and the MCU PWB. 
Replace the operation control PWB. 
Replace the MCU PWB. 
Check connection of the connector of the 
operation control PWB and the MCU 
PWB.

U99

Content

Operation control PWB communication 
error

Detail

Communication error between the oper-
ation control PWB and the MCU PWB 
(Detected by the OPE-PWB)

Cause

Disconnection or reverse connection of 
the flat cable between the Operation 
control PWB and the MCU PWB. 
Operation control PWB trouble MCU 
PWB trouble 
Connector trouble of the operation con-
trol PWB and the MCU PWB

Check and 
remedy

Check insertion of or replace the flat 
cable between the operation control 
PWB and the MCU PWB. 
Replace the operation control PWB. 
Replace the MCU PWB. 
Check connection of the connector of the 
operation control PWB and the MCU 
PWB.

Main
code

Sub
code

Detail of trouble

AL-1611/AL-1622

TROUBLE CODE LIST

10 – 6

U9

80

Content

Operation control PWB communication 
trouble (Protocol)

Detail

Communication trouble between 
MCU and the operation control 
PWB (Protocol error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

81

Content

Operation control PWB communication 
trouble (Parity)

Detail

Communication trouble between MCU 
and the operation control PWB (Parity 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

82

Content

Operation control PWB communication 
trouble (Overrun)

Detail

Communication trouble between MCU 
and the operation control PWB (Overrun 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

84

Content

Operation control PWB communication 
trouble (Framing)

Detail

Communication trouble between MCU 
and the operation control PWB (Framing 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

88

Content

Operation control PWB communication 
trouble (Time-out)

Detail

Communication trouble between MCU 
and the operation PWB (Time-out error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

Main
code

Sub
code

Detail of trouble

U95

Content

Operation control PWB communication 
error

Detail

Communication error between the oper-
ation control PWB and the MCU PWB 
(Detected by the OPE-PWB)

Cause

Disconnection or reverse connection of 
the flat cable between the Operation 
control PWB and the MCU PWB. 
Operation control PWB trouble 
MCU PWB trouble 
Connector trouble of the operation con-
trol PWB and the MCU PWB

Check and 
remedy

Check insertion of or replace the flat 
cable between the operation control 
PWB and the MCU PWB. 
Replace the operation control PWB. 
Replace the MCU PWB. 
Check connection of the connector of the 
operation control PWB and the MCU 
PWB.

U99

Content

Operation control PWB communication 
error

Detail

Communication error between the oper-
ation control PWB and the MCU PWB 
(Detected by the OPE-PWB)

Cause

Disconnection or reverse connection of 
the flat cable between the Operation 
control PWB and the MCU PWB. 
Operation control PWB trouble MCU 
PWB trouble 
Connector trouble of the operation con-
trol PWB and the MCU PWB

Check and 
remedy

Check insertion of or replace the flat 
cable between the operation control 
PWB and the MCU PWB. 
Replace the operation control PWB. 
Replace the MCU PWB. 
Check connection of the connector of the 
operation control PWB and the MCU 
PWB.

Main
code

Sub
code

Detail of trouble

AL-1611/AL-1622

TROUBLE CODE LIST

10 – 6

U9

80

Content

Operation control PWB communication 
trouble (Protocol)

Detail

Communication trouble between 
MCU and the operation control 
PWB (Protocol error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

81

Content

Operation control PWB communication 
trouble (Parity)

Detail

Communication trouble between MCU 
and the operation control PWB (Parity 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

82

Content

Operation control PWB communication 
trouble (Overrun)

Detail

Communication trouble between MCU 
and the operation control PWB (Overrun 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

84

Content

Operation control PWB communication 
trouble (Framing)

Detail

Communication trouble between MCU 
and the operation control PWB (Framing 
error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

88

Content

Operation control PWB communication 
trouble (Time-out)

Detail

Communication trouble between MCU 
and the operation PWB (Time-out error)

Cause

Operation control PWB connector dis-
connection 
Operation control PWB MCU PWB har-
ness failure

Check and 
remedy

Check the connectors and harness of 
the operation control PWB and the MCU 
PWB. 
Check grounding of the machine.

Main
code

Sub
code

Detail of trouble

U95

Content

Operation control PWB communication 
error

Detail

Communication error between the oper-
ation control PWB and the MCU PWB 
(Detected by the OPE-PWB)

Cause

Disconnection or reverse connection of 
the flat cable between the Operation 
control PWB and the MCU PWB. 
Operation control PWB trouble 
MCU PWB trouble 
Connector trouble of the operation con-
trol PWB and the MCU PWB

Check and 
remedy

Check insertion of or replace the flat 
cable between the operation control 
PWB and the MCU PWB. 
Replace the operation control PWB. 
Replace the MCU PWB. 
Check connection of the connector of the 
operation control PWB and the MCU 
PWB.

U99

Content

Operation control PWB communication 
error

Detail

Communication error between the oper-
ation control PWB and the MCU PWB 
(Detected by the OPE-PWB)

Cause

Disconnection or reverse connection of 
the flat cable between the Operation 
control PWB and the MCU PWB. 
Operation control PWB trouble MCU 
PWB trouble 
Connector trouble of the operation con-
trol PWB and the MCU PWB

Check and 
remedy

Check insertion of or replace the flat 
cable between the operation control 
PWB and the MCU PWB. 
Replace the operation control PWB. 
Replace the MCU PWB. 
Check connection of the connector of the 
operation control PWB and the MCU 
PWB.

Main
code

Sub
code

Detail of trouble