Sharp AR-M155 (serv.man3) Service Manual ▷ View online
AR-M150/M155/M155X TEST COMMAND, TROUBLE CODES 10 - 39
5. Trouble codes
A. Trouble codes list
B. Details of trouble codes
Main
code
code
Sub
code
Details of trouble
E1
00
IMC communication trouble
10
IMC trouble
13
IMC flash ROM error
16
IMC DIMM memory read/write check error
81
IMC communication interface error (parity)
82
IMC communication interface error (Overrun)
84
IMC communication interface error (Framing)
E7
02
LSU trouble
10
Shading trouble (Black correction)
11
Shading trouble (White correction)
16
Abnormal laser output
F2
04
Improper cartridge (Destination error, life cycle error)
F5
02
Copy lamp lighting abnormality
F6
10
FAX board trouble
H2
00
Thermistor open
H3
00
Heat roller high temperature detection
H4
00
Heat roller low temperature detection
L1
00
Feeding is not completed within the specified time after
starting feeding. (The scan head locking switch is locked)
starting feeding. (The scan head locking switch is locked)
L3
00
Scanner return trouble
L4
01
Main motor lock detection
L6
10
Polygon motor lock detection
U1
03
FAX board battery error
U2
04
EEPROM read/write error (Serial communication error)
11
Counter check sum error (EEPROM)
40
CRUM chip communication error
U9
99
Operation panel language error
Main
code
code
Sub
code
Details of trouble
E1
00
Content IMC communication trouble
Detail
An abnormality occurs in communication
between the CPU and the IMC.
between the CPU and the IMC.
Cause
IMC – CPU signal line abnormality
IMC Memory defect/data abnormality
IMC Memory defect/data abnormality
Check
and
remedy
and
remedy
Replace the MCU PWB with new one.
10
Content IMC trouble
Detail
An abnormality occurs in the IMC.
Cause
USB chip error/CODEC error on the IMC.
Check
and
remedy
and
remedy
Replace the MCU PWB with a new one.
13
Content IMC flash ROM error
Detail
Detail
An abnormality occurs in the IMC flash ROM.
Cause
IMC abnormality
Check
and
remedy
and
remedy
Replace the MCU PWB with a new one.
If downloading of the program is abnormally
terminated, it may cause an error. Download
the program again to avoid this.
If downloading of the program is abnormally
terminated, it may cause an error. Download
the program again to avoid this.
E1
16
Content IMC DIMM memory read/write check error
Detail
An installation error occurs in the IMC memory
module.
An error occurs during access to the IMC
memory.
module.
An error occurs during access to the IMC
memory.
Cause
Improper installation of the IMC memory
module.
IMC memory module abnormality
IMC memory contact abnormality
IMC abnormality.
module.
IMC memory module abnormality
IMC memory contact abnormality
IMC abnormality.
Check
and
remedy
and
remedy
Check installation of the memory module.
Replace the memory module.
Replace the MCU PWB with a new one.
Replace the memory module.
Replace the MCU PWB with a new one.
81
Content IMC communication interface error (parity)
Detail
A parity error occurs in communication between
the CPU and the IMC.
the CPU and the IMC.
Cause
IMC memory defect/data abnormality
Check
and
remedy
and
remedy
Check the memory of the IMC.
Replace the MCU PWB with new one.
Replace the MCU PWB with new one.
82
Content IMC communication interface error (Overrun)
Detail
Detail
An overrun error occurs in communication
between the CPU and the IMC.
between the CPU and the IMC.
Cause
IMC memory defect/data abnormality.
Check
and
remedy
and
remedy
Check the memory of the IMC.
Replace the MCU PWB with new one.
Replace the MCU PWB with new one.
84
Content IMC communication interface error (Framing)
Detail
A framing error occurs in communication
between the CPU and the IMC.
between the CPU and the IMC.
Cause
IMC memory defect/data abnormality.
Check
and
remedy
and
remedy
Check the memory of the IMC.
E7
02
Content LSU trouble
Detail
The BD signal from the LSU cannot be detected
in a certain cycle. (Always OFF or always ON)
in a certain cycle. (Always OFF or always ON)
Cause
LSU connector or LSU harness defect or
disconnection
Polygon motor rotation abnormality
Laser beams are not generated.
MCU PWB abnormality.
disconnection
Polygon motor rotation abnormality
Laser beams are not generated.
MCU PWB abnormality.
Check
and
remedy
and
remedy
Check connection of the LSU connector.
Execute TC 61-03 to check the LSU operations.
Check that the polygon motor rotates normally.
Check that the laser emitting diode generates
laser beams.
Replace the LSU unit.
Replace the MCU PWB.
Execute TC 61-03 to check the LSU operations.
Check that the polygon motor rotates normally.
Check that the laser emitting diode generates
laser beams.
Replace the LSU unit.
Replace the MCU PWB.
10
Content Shading trouble (Black correction)
Detail
The CCD black scan level is abnormal when the
shading.
shading.
Cause
Improper connection of the CCD unit flat cable
CCD unit abnormality
MCU PWB abnormality
CCD unit abnormality
MCU PWB abnormality
Check
and
remedy
and
remedy
Check connection of the CCD unit flat cable.
Check the CCD unit.
Check the CCD unit.
Main
code
code
Sub
code
Details of trouble
AR-M150/M155/M155X TEST COMMAND, TROUBLE CODES 10 - 40
E7
11
Content Shading trouble (White correction)
Detail
Detail
The CCD white scan level is abnormal when the
shading.
shading.
Cause
Improper connection of the CCD unit flat cable
Dirt on the mirror, the lens, and the reference
white plate
Copy lamp lighting abnormality
CCD unit abnormality
MCU PWB abnormality
(When occurred in the SPF scan position.)
Improper installation of the mirror unit
Dirt on the mirror, the lens, and the reference
white plate
Copy lamp lighting abnormality
CCD unit abnormality
MCU PWB abnormality
(When occurred in the SPF scan position.)
Improper installation of the mirror unit
Check
and
remedy
and
remedy
Clean the mirror, lens, and the reference white
plate.
Check the light quantity and lighting status of
the copy lamp (TC 05-03).
Check the MCU PWB.
plate.
Check the light quantity and lighting status of
the copy lamp (TC 05-03).
Check the MCU PWB.
16
Content Abnormal laser output
Detail
Detail
When the laser output is stopped, HSYNC is
detected.
detected.
Cause
Laser abnormality
MCU PWB abnormality.
MCU PWB abnormality.
Check
and
remedy
and
remedy
Check the laser emitting diode operation.
Replace the MCU PWB.
Replace the MCU PWB.
F2
04
Content Improper cartridge (Destination error, life cycle
error)
Detail
The destination of the main unit differs from that
of the CRUM.
The life cycle information is other than "FFh"
(Not used).
of the CRUM.
The life cycle information is other than "FFh"
(Not used).
Cause
CRUM chip trouble
Improper developing unit
Improper developing unit
Check
and
remedy
and
remedy
Replace the CRUM chip.
Replace the developing unit.
Replace the developing unit.
F5
02
Content Copy lamp lighting abnormality
Detail
Detail
The copy lamp does not turn on.
Cause
Copy lamp abnormality
Copy lamp harness abnormality
CCD PWB harness abnormality.
Copy lamp harness abnormality
CCD PWB harness abnormality.
Check
and
remedy
and
remedy
Use TC 5-3 to check the copy lamp operations.
When the copy lamp lights up.
Check the harness and the connector between
the CCD unit and the MCU PWB.
When the copy lamp does not light up.
Check the harness and the connector between
the copy lamp unit and the MCU PWB.
Replace the copy lamp unit.
Replace the MCU PWB.
When the copy lamp lights up.
Check the harness and the connector between
the CCD unit and the MCU PWB.
When the copy lamp does not light up.
Check the harness and the connector between
the copy lamp unit and the MCU PWB.
Replace the copy lamp unit.
Replace the MCU PWB.
F6
10
Content FAX board trouble
Detail
Detail
Communication trouble between MCU and FAX
control PWB
control PWB
Cause
FAX control PWB connector disconnection
Defective harness between FAX control PWB
and MCU PWB
Motherboard connector pin breakage
FAX control PWB ROM error/Data error
IC on FAX PWB causes abnormality
Defective harness between FAX control PWB
and MCU PWB
Motherboard connector pin breakage
FAX control PWB ROM error/Data error
IC on FAX PWB causes abnormality
Check
and
remedy
and
remedy
Check connector/harness of FAX control PWB
and MCU PWB.
Check the grounding of the copier.
Check FAX control PWB ROM.
Replace the FAX PWB.
and MCU PWB.
Check the grounding of the copier.
Check FAX control PWB ROM.
Replace the FAX PWB.
Main
code
code
Sub
code
Details of trouble
H2
00
Content Thermistor open
Detail
Detail
The thermistor is open.
The fusing unit is not installed.
The fusing unit is not installed.
Cause
Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection
The fusing unit is not installed.
Control PWB abnormality
Fusing section connector disconnection
The fusing unit is not installed.
Check
and
remedy
and
remedy
Check the harness and the connector between
the thermistor and the PWB.
Use TC 14 to clear the self diagnostic display.
the thermistor and the PWB.
Use TC 14 to clear the self diagnostic display.
H3
00
Content Heat roller high temperature detection
Detail
The fusing temperature exceeds 240°C.
Cause
Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection.
Control PWB abnormality
Fusing section connector disconnection.
Check
and
remedy
and
remedy
Use TC 5-02 to check the heater lamp blinking
operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp keeps ON.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use TC 14 to clear the self diagnostic display.
operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp keeps ON.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use TC 14 to clear the self diagnostic display.
H4
00
Content Heat roller low temperature detection
Detail
The fusing temperature does not reach 185°C
within 27 sec of turning on the power, or the
fusing temperature keeps at 140°C.
within 27 sec of turning on the power, or the
fusing temperature keeps at 140°C.
Cause
Thermistor abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality
Check
and
remedy
and
remedy
Use TC 5-02 to check the heater lamp blinking
operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and
the thermostat. Check the interlock switch.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use TC 14 to clear the self diagnostic display.
operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and
the thermostat. Check the interlock switch.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use TC 14 to clear the self diagnostic display.
Main
code
code
Sub
code
Details of trouble
AR-M150/M155/M155X TEST COMMAND, TROUBLE CODES 10 - 41
L1
00
Content Feeding is not completed within the specified
time after starting feeding. (The scan head
locking switch is locked)
locking switch is locked)
Detail
The white area and the black marking on the
shading plate are used to obtain the difference
in the CCD level values for judgment of lock.
When the difference in the levels of which and
black is small, it is judged that the black mark
could not be scanned by lock and the trouble
code “L1” is displayed.
shading plate are used to obtain the difference
in the CCD level values for judgment of lock.
When the difference in the levels of which and
black is small, it is judged that the black mark
could not be scanned by lock and the trouble
code “L1” is displayed.
Cause
The scan head is locked by the lock switch.
Mirror unit abnormality
The scanner wire is disconnected.
The origin detection sensor abnormality
Mirror motor harness abnormality
Mirror unit abnormality
The scanner wire is disconnected.
The origin detection sensor abnormality
Mirror motor harness abnormality
Check
and
remedy
and
remedy
Check to confirm that the scan head lock switch
is released.
Use TC 1-1 to check the mirror reciprocating
operations.
When the mirror does not feed.
Check for disconnection of the scanner wire.
Check the harness and the connector between
the mirror motor and the MCU PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use TC 1-2 to check the mirror home position
sensor.
is released.
Use TC 1-1 to check the mirror reciprocating
operations.
When the mirror does not feed.
Check for disconnection of the scanner wire.
Check the harness and the connector between
the mirror motor and the MCU PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use TC 1-2 to check the mirror home position
sensor.
L3
00
Content Scanner return trouble
Detail
Detail
When the mirror base is returned for the
specified time (6 sec) in mirror initializing after
turning on the power, the mirror home position
sensor (MHPS) does not turn ON. Or when the
mirror base is returned for the specified time
(about 6 sec) after start of copy return, the
mirror home position sensor (MHPS) does not
turn ON.
specified time (6 sec) in mirror initializing after
turning on the power, the mirror home position
sensor (MHPS) does not turn ON. Or when the
mirror base is returned for the specified time
(about 6 sec) after start of copy return, the
mirror home position sensor (MHPS) does not
turn ON.
Cause
Mirror unit abnormality
Scanner wire disconnection
Origin detection sensor abnormality
Mirror motor harness abnormality
Scanner wire disconnection
Origin detection sensor abnormality
Mirror motor harness abnormality
Check
and
remedy
and
remedy
Use TC 1-1 to check the mirror reciprocating
operations.
When the mirror does not return.
Check for disconnection of the scanner wire.
Check the harness and the connector between
the mirror motor and the MCU PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use TC 1-2 to check the mirror home position
sensor.
operations.
When the mirror does not return.
Check for disconnection of the scanner wire.
Check the harness and the connector between
the mirror motor and the MCU PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use TC 1-2 to check the mirror home position
sensor.
L4
01
Content Main motor lock detection
Detail
When the main motor encoder pulse is not
detected for 100 msec.
detected for 100 msec.
Cause
Main motor unit abnormality
Improper connection or disconnection the main
motor and the harness.
MCU PWB abnormality
Improper connection or disconnection the main
motor and the harness.
MCU PWB abnormality
Check
and
remedy
and
remedy
Use TC 25-01 to check the main motor
operations.
Check connection of the main motor harness/
connector.
Replace the main motor.
Replace the MCU PWB.
operations.
Check connection of the main motor harness/
connector.
Replace the main motor.
Replace the MCU PWB.
Main
code
code
Sub
code
Details of trouble
L6
10
Content Polygon motor lock detection
Detail
Detail
The lock signal (specified rpm signal) does not
return within a certain time (about 20 sec) from
starting the polygon motor rotation.
return within a certain time (about 20 sec) from
starting the polygon motor rotation.
Cause
Polygon motor unit abnormality
Improper connection or disconnection of the
polygon motor and the harness.
MCU PWB abnormality
Improper connection or disconnection of the
polygon motor and the harness.
MCU PWB abnormality
Check
and
remedy
and
remedy
Use TC 61-1 to check the polygon motor
operations.
Check connection of the polygon motor
harness/connector.
Replace the polygon motor.
Replace the MCU PWB.
operations.
Check connection of the polygon motor
harness/connector.
Replace the polygon motor.
Replace the MCU PWB.
U1
03
Content FAX board battery error
Details
The SRAM backup battery voltage on FAX
PWB falls.
PWB falls.
Cause
The SRAM backup battery voltage on FAX
PWB falls.
PWB falls.
Check
and
remedy
and
remedy
Check voltage of the SRAM back up battery.
Replace the battery.
Replace the battery.
U2
04
Content EEPROM read/write error (Serial
communication error)
Detail
EEPROM access process error
Cause
EEPROM abnormality
Check
and
remedy
and
remedy
Check that the EEPROM is properly set.
Use TC 16 to cancel the trouble.
Replace the MCU PWB.
Use TC 16 to cancel the trouble.
Replace the MCU PWB.
11
Content Counter check sum error (EEPROM)
Detail
Detail
Check sum error of the counter area in the
EEPROM
EEPROM
Cause
EEPROM abnormality
Check
and
remedy
and
remedy
Check that the EEPROM is properly set.
Use TC 16 to cancel the trouble.
Replace the MCU PWB.
Use TC 16 to cancel the trouble.
Replace the MCU PWB.
40
Content CRUM chip communication error
Detail
An error occurs in MCU-CRUM chip
communication.
communication.
Cause
CRUM chip trouble
Defective contact of developing unit
MCU PWB trouble
Defective contact of developing unit
MCU PWB trouble
Check
and
remedy
and
remedy
Replace the CRUM chip.
Check installation of the developing unit.
Cancel the operation with TC16.
Replace the MCU PWB.
Check installation of the developing unit.
Cancel the operation with TC16.
Replace the MCU PWB.
U9
99
Content Operation panel language error
Detail
There is no language file.
The language file is destroyed.
The language file is destroyed.
Cause
Language file abnormality
MCU PWB abnormality
MCU PWB abnormality
Check
and
remedy
and
remedy
MCU firmware download
Replace the MCU PWB.
Replace the MCU PWB.
Main
code
code
Sub
code
Details of trouble
AR-M150/M155/M155X MAINTENANCE 11 - 1
[11] MAINTENANCE
1. Maintenance table
: Check (Clean, adjust, or replace when required.)
: Clean
: Replace
: Adjust
✩
: Lubricate
2. Maintenance display system
3. Remaining toner indication
• The remaining toner indication is based on the number of revolutions of the toner motor.
• The toner END indication appears when the END is detected by the toner sensor.
Section
Parts
25K
50K
75K
100K
125K
Remark
Developing
Developer
DV blade
DV side seal (F/R)
DV side seal (F/R)
Process peripheral
Drum
Toner
Life
8K
Remaining quantity
NEAR EMPTY
About 10%
About 10%
EMPTY
LED
ON
Flash
Machine
Operation allowed
Stop
Developer
Life
25K
LED
ON at 25K of the developer count.
Machine
Selection is available between Not Stop and Stop by Service Simulation (SIM 26-37) Setup.
(If Stop is selected, the LED will flash and stop at 25K.)
∗
Default: Not Stop
∗
Clear: SIM 24-06
Maintenance
LED
Selection is available among 25K, 13K, 9K, 6K, 3K, and free (no lighting) with SIM 21-1.
∗
Default: 25K
∗
Clear: SIM 20-1
Machine
Not stop.
TONER FULL
Remaining toner indication
Display for users
100%
75%
50%
25%
Lo
LOW LEVEL
100-90%
89-75%
74-50%
49-25%
24-10%
10%
10 sheets
TONER CARTRIDGE
IS NEAR EMPTY
IS NEAR EMPTY
REPLACE THE
TONER CARTRIDGE
TONER CARTRIDGE
Displayed on the LCD.
Displayed on the LCD.
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