Sharp AR-M276 (serv.man6) Service Manual ▷ View online
AR-M236/M276/M237/M277 TROUBLE CODE LIST 9 - 9
L3
00
Content
Scanner return trouble
Details
Scanner return is not completed within the
specified time.
"When OC copying with the mirror at the
home position, the mirror is not in the
home position. "
specified time.
"When OC copying with the mirror at the
home position, the mirror is not in the
home position. "
Cause
Mirror unit defect
The scanner wire is disconnected.
Origin detection sensor error
Mirror motor harness abnormality
The scanner wire is disconnected.
Origin detection sensor error
Mirror motor harness abnormality
Check
and
remedy
and
remedy
Check the scanning operation with SIM 1-
1.
Mirror base return trouble
Check for disconnection of the scanner
wire.
Check the harness and connector
between the mirror motor and the MCU
PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror feeds:
Check the mirror home position sensor
with SiM 1-2.
1.
Mirror base return trouble
Check for disconnection of the scanner
wire.
Check the harness and connector
between the mirror motor and the MCU
PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror feeds:
Check the mirror home position sensor
with SiM 1-2.
L4
01
Content
Main motor lock
Details
The main motor does not rotate.
The motor lock signal is detected for 1sec
or more after the main motor rotates.
The motor lock signal is detected for 1sec
during rotation of the main motor.
The motor lock signal is detected for 1sec
or more after the main motor rotates.
The motor lock signal is detected for 1sec
during rotation of the main motor.
Cause
Main motor defect
Main motor connection harness trouble or
disconnection
MCU PWB failure
Main motor connection harness trouble or
disconnection
MCU PWB failure
Check
and
remedy
and
remedy
Check the main motor operation with SIM
25-1.
Check connection of the main motor
harness and connector.
Replace the main motor.
Replace the MCU PWB.
25-1.
Check connection of the main motor
harness and connector.
Replace the main motor.
Replace the MCU PWB.
L4
11
Content
Shifter motor trouble
Details
The shifter home position detection signal
is not detected when the shifter is
operating.
is not detected when the shifter is
operating.
Cause
Shifter motor trouble or harness
connection trouble and disconnection
Shifter home position sensor trouble
connection trouble and disconnection
Shifter home position sensor trouble
Check
and
remedy
and
remedy
Check the shift motor operation with SIM
3-11.
Check connection of the shifter motor
harness/connector.
Replace the shifter motor.
Replace the MCU PWB.
3-11.
Check connection of the shifter motor
harness/connector.
Replace the shifter motor.
Replace the MCU PWB.
Trouble
code
Details of trouble
Main
code
code
Sub
code
L6
10
Content
Polygon motor lock trouble
Details
The polygon motor does not rotate.
The motor lock signal is detected for 6sec
or more after the polygon motor rotates.
The motor lock signal is detected for 1sec
during rotation of the polygon motor.
The motor lock signal is detected for 6sec
or more after the polygon motor rotates.
The motor lock signal is detected for 1sec
during rotation of the polygon motor.
Cause
Polygon motor unit failure
Polygon motor connection harness trouble
or disconnection
MCU PWB failure
Polygon motor connection harness trouble
or disconnection
MCU PWB failure
Check
and
remedy
and
remedy
Check the polygon motor operation with
SIM 61-1.
Check connector/harness of polygon
motor
Replace the polygon motor.
Replace the MCU PWB.
SIM 61-1.
Check connector/harness of polygon
motor
Replace the polygon motor.
Replace the MCU PWB.
L8
01
Content
Power abnormality detection trouble
Details
The power status monitoring signal keeps
power OFF state after passing the
specified time (2sec).
power OFF state after passing the
specified time (2sec).
U1
01
Content
FAX battery error
Details
The SRAM backup battery voltage falls.
02
Content
PANEL LOW battery error
Details
The voltage of the panel clock function
battery falls.
battery falls.
U2
04
Content
EEPROM communication error
Details
MCU PWB EEPROM access circuit failure
Cause
EEPROM defective
ICU PWB EEPROM access circuit failure
ICU PWB EEPROM access circuit failure
Check
and
remedy
and
remedy
Check that the EEPROM is properly set.
Clear trouble with SIM 16.
Replace the MCU PWB.
Clear trouble with SIM 16.
Replace the MCU PWB.
Remarks
EEPROM abnormality
U2
20
Content
Machine speed code data error
Details
The machine information is not identical to
the model code speed information.
the model code speed information.
Cause
EEPROM defective
SIM operation error
SIM operation error
Check
and
remedy
and
remedy
Check that the machine set with SIM 26-
57 is identical to the model information.
57 is identical to the model information.
Remarks
When the boot program speed code does
not match with the body model
information.
not match with the body model
information.
40
Content
CRUM chip communication error
Details
Error in MCU-CRUM chip communication
Cause
CRUM chip failure
Developing unit contact trouble
MCU PWB failure
Developing unit contact trouble
MCU PWB failure
Check
and
remedy
and
remedy
Replace the CRUM chip.
Check installation of the developing unit.
Clear the trouble with SIM 16.
Replace the MCU PWB.
Check installation of the developing unit.
Clear the trouble with SIM 16.
Replace the MCU PWB.
Remarks
CRUM communication error
Trouble
code
Details of trouble
Main
code
code
Sub
code
AR-M236/M276/M237/M277 TROUBLE CODE LIST 9 - 10
U7
00
Content
RIC communication trouble
Details
Error in communication with RIC
Error in communication test after turning
on the power or canceling SIM.
Error in communication test after turning
on the power or canceling SIM.
Cause
Connector harness contact trouble or
disconnection
RIC control PWB trouble
MCU PWB failure
Malfunction by noises
disconnection
RIC control PWB trouble
MCU PWB failure
Malfunction by noises
Check
and
remedy
and
remedy
check the communication cable
connectors from the RIC box to the main
body.
connectors from the RIC box to the main
body.
U9
00
Content
MCU-OPE communication trouble
Details
Communication establishment error/
framing/parity/protocol error
framing/parity/protocol error
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on the operation control
PWB.
operation control PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on the operation control
PWB.
80
Content
Operation control PWB communication
trouble (Protocol)
trouble (Protocol)
Details
Communication trouble between MCU and
the operation control PWB (Protocol error)
the operation control PWB (Protocol error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
operation control PWB and MCU PWB.
Check the grounding of the copier.
U9
81
Content
Operation control PWB communication
trouble (Parity)
trouble (Parity)
Details
Communication trouble between MCU and
the operation control PWB (Parity error)
the operation control PWB (Parity error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
operation control PWB and MCU PWB.
Check the grounding of the copier.
82
Content
Operation control PWB communication
trouble (Overrun)
trouble (Overrun)
Details
Communication trouble between MCU and
the operation control PWB (Overrun error)
the operation control PWB (Overrun error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
operation control PWB and MCU PWB.
Check the grounding of the copier.
Trouble
code
Details of trouble
Main
code
code
Sub
code
U9
84
Content
Operation control PWB communication
trouble (Framing)
trouble (Framing)
Details
Communication trouble between MCU and
the operation control PWB (Framing error)
the operation control PWB (Framing error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
operation control PWB and MCU PWB.
Check the grounding of the copier.
88
Content
Operation control PWB communication
trouble (Time-out)
trouble (Time-out)
Details
Communication trouble between MCU and
the operation PWB (Time-out error)
the operation PWB (Time-out error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
operation control PWB and MCU PWB.
Check the grounding of the copier.
99
Content
Operation panel destination error
Details
An error occurred in checking the
operation panel and the destination of the
body.
operation panel and the destination of the
body.
Cause
Erroneous connection the operation panel
unit
SIM setup error
unit
SIM setup error
Check
and
remedy
and
remedy
Check the destination information of the
operation panel unit and the MCU. (Use
SIM 26-22 for the destination of the body.)
operation panel unit and the MCU. (Use
SIM 26-22 for the destination of the body.)
EE
EL
Content
Developer adjustment trouble (Over-toner
abnormality)
abnormality)
Details
An abnormality occurred in execution of
automatic developer adjustment.
Sample data over-toner was detected.
automatic developer adjustment.
Sample data over-toner was detected.
Cause
Toner concentration sensor abnormality
Toner concentration trouble
Developing unit trouble
MCU PWB failure
Toner concentration trouble
Developing unit trouble
MCU PWB failure
Check
and
remedy
and
remedy
Use SIM 25-2 to perform the auto
developer adjustment.
developer adjustment.
EU
Content
Developer adjustment trouble (Under-
toner abnormality)
toner abnormality)
Details
An abnormality occurred in execution of
automatic developer adjustment.
Sample data under-toner was detected.
automatic developer adjustment.
Sample data under-toner was detected.
Cause
Toner concentration sensor abnormality
Toner concentration trouble
Developing unit trouble
MCU PWB failure
Toner concentration trouble
Developing unit trouble
MCU PWB failure
Check
and
remedy
and
remedy
Use SIM 25-2 to perform the auto
developer adjustment.
developer adjustment.
PF
00
Content
RIC copy inhibit signal received
Details
The copy inhibit command from RIC is
received.
received.
Cause
Judged by the host.
Check
and
remedy
and
remedy
Information the host.
Trouble
code
Details of trouble
Main
code
code
Sub
code
AR-M236/M276/M237/M277 DISASSEMBLY, ASSEMBLY AND MAINTENANCE 10 - 1
[10] DISASSEMBLY, ASSEMBLY AND MAINTENANCE
1. Maintenance table
✕: Check (Check, clean, replace or adjust according to necessity.)
❍: Cleaning ▲: Replace ✩: Lubricate
❍: Cleaning ▲: Replace ✩: Lubricate
2. Counter clear
3. List of disassembly and assembly
Unit
Parts
75k
150k
225k
300k
375k
450k
Note
Process unit Drum
▲
▲
▲
▲
▲
▲
Cleaning blade
▲
▲
▲
▲
▲
▲
Seal F/R
✕
✕
✕
✕
✕
✕
Drum frame unit
✕
✕
▲
✕
✕
▲
MC unit
▲
▲
▲
▲
▲
▲
MC unit supply only
(Individual parts in MC unit can not be
supplied.)
(Individual parts in MC unit can not be
supplied.)
Separation pawl unit
✕
▲
✕
▲
✕
▲
Separation pawl unit supply only
(Individual parts in separation pawl unit can not
be supplied.)
(Individual parts in separation pawl unit can not
be supplied.)
DV unit
Developer
▲
▲
▲
▲
▲
▲
DV seal
✕
✕
✕
✕
✕
✕
DV side seal N
✕
✕
✕
✕
✕
✕
Fusing unit
Upper heat roller
❍
▲
❍
▲
❍
▲
Lower heat roller
❍
❍
❍
▲
❍
❍
Upper separation pawl
❍
▲
❍
▲
❍
▲
Upper cleaning Pat
✕
▲
✕
▲
✕
▲
Lower separation pawl
❍
❍
❍
▲
❍
❍
Thermistor
❍
❍
❍
❍
❍
❍
Upper roller gear
✩
▲
✩
▲
✩
▲
Upper roller bush
✕
▲
✕
▲
✕
▲
Lower heat roller bearing
✕
✕
✕
▲
✕
✕
Paper guide
❍
❍
❍
❍
❍
❍
Paper feed
Pickup roller (Multi bypass tray)
✕
✕
✕
✕
✕
✕
Changing criteria for parts: 100k
Paper feeding sheet (Multi bypass tray)
✕
✕
✕
✕
✕
✕
Changing criteria for parts: 100k
Pickup roller (500 sheets tray)
✕
✕
✕
✕
✕
✕
Changing criteria for parts: 100k
Paper feeding sheet (500 sheets tray)
✕
✕
✕
✕
✕
✕
Changing criteria for parts: 100k
Pickup roller and feed roller (SPF/
RSPF)
RSPF)
✕
✕
✕
✕
✕
✕
Paper feeding sheet (SPF/RSPF)
✕
✕
✕
✕
✕
✕
Changing criteria for parts: 100k
TC roller unit TC roller unit
❍
▲
❍
▲
❍
▲
TC unit supply only
(Individual parts in TC unit can not be supplied.)
(Individual parts in TC unit can not be supplied.)
Ozone filter
Ozone filter
▲
▲
▲
▲
▲
▲
Others
Paper feed rollers
❍
❍
❍
❍
❍
❍
Gears
✩
✩
✩
✩
✩
✩
Item
SIM
Remarks
Maintenance cycle setting
SIM 21-1
Jam/trouble counter clear
SIM 24-1
Paper feed counter clear
SIM 24-2 At maintenance
DF/Scan/Stapler counter clear
SIM 24-3 At maintenance
Maintenance counter clear
SIM 24-4 At drum replacement
Developing counter clear
SIM 24-5 At developer replacement
Copy counter clear
SIM 24-6
Drum counter clear
SIM 24-7 At drum replacement
Printer, other counter clear
SIM 24-9
FAX counter clear
SIM 24-10
Scanner mode counter clear
SIM 24-15
Unit
Parts
A. Process unit
(1) Drum
(2) Drum section
(2) Drum section
a. Main charger
b.
Cleaning blade
c.
Drum frame unit
d.
Moquette F/R
e.
Separation pawl
B. Developing unit
(1) Developer
(2) DV seal/side seal
(2) DV seal/side seal
C. Fusing unit
(1) Thermostat
(2) Thermistor
(3) Paper guide
(3) Paper guide
(4) Fusing Separation Pawl (lower)
(5) Lower heat roller
(6) Heater lamp
(6) Heater lamp
(7) Fusing Separation Pawl (upper)
(8) Upper heat roller
AR-M236/M276/M237/M277 DISASSEMBLY, ASSEMBLY AND MAINTENANCE 10 - 2
4. Details of disassembly and assembly
A. Process unit
(1) Drum
(2) Drum section
a. Main charger
b. Cleaning blade
D. Optical section
(1) CCD unit
(2) Lamp unit
a.
Lamp
b.
PWB
c.
Wire
d.
Mirror motor
E. Paper feed
section
section
(1) Paper feed solenoid
(2) Cassette sensor PWB
(2) Cassette sensor PWB
(3) Manual P-in sensor/Manual empty sensor
(4) Multi manual
paper feed
a.
Paper feed roller/
pickup roller
pickup roller
b.
Reverse sensor
c.
Separation sheet
d.
Clutch/solenoid
(5) Upper 500
sheets tray
paper feed
paper feed
a.
Paper feed roller/
pickup roller
pickup roller
b.
Separation sheet
(6) Lower 500
sheets tray
paper feed
paper feed
a.
Paper feed roller/
pickup roller
pickup roller
b.
Separation sheet
c.
Lift up unit
d.
Transport clutch
e.
Paper feed clutch
f.
Transport clutch
g.
Solenoid
h.
Sensor PWB
I.
Dehumidification
heater
heater
F. Side door unit
(1) Transport roller unit
(2) Transport roller
(3) DUP transport roller
(4) DUP motor
(4) DUP motor
G. 1st paper exit
unit
unit
(1) Exit roller
(2) Cooling fan
H. 2nd paper exit
unit
unit
(1) Switch
(2) Sensor
(3) Roller
I. Laser unit
(1) LSU
J. Power unit
(1) Power source
K. PWB
(1) Option CN PWB
(2) IMC PWB
(2) IMC PWB
(3) MCU PWB
(4) Motherboard PWB
(5) Second interface PWB
(5) Second interface PWB
L. Ozone filter
M. Drive section
(1) DUP reverse motor
(2) Main drive motor
(2) Main drive motor
(3) Toner motor
(4) Drive unit
(5) PS transport clutch
(5) PS transport clutch
(6) Paper feed clutch
(7) Lift up motor
N. Transport section
(1) Transport roller
O. Operation
section
section
(1) Operation section
(2) OPU PWB
(3) Key PWB
(3) Key PWB
(4) LCD unit
P. Switch
(1) Power switch/Dehumidification heater
switch
(2) Dehumidification heater
Unit
Parts
2
1
4
3
1
2
4
3
1
1
2
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