Sharp MX-M850 (serv.man38) Service Manual ▷ View online
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 9
3. Details of trouble code
C1-00
Charger trouble
C1-01
Charger cleaner trouble
E6-10
Shading trouble black correction
(SPF)
(SPF)
E6-11
Shading trouble white correction
(SPF)
(SPF)
E6-14
CCD-ASIC abnormality (SPF)
E7-00
System memory trouble (The Tandem
memory is not guaranteed.)
memory is not guaranteed.)
E7-01
System data trouble
E7-03
HDD trouble
E7-04
HDD-ASIC trouble
E7-05
W-ICU memory trouble
Detail
Main charger output abnormality (output open) /
The trouble signal is outputted from the high voltage
transformer
The trouble signal is outputted from the high voltage
transformer
Section
PCU
Cause
The main charger is not installed properly.
The main charger is not assembled properly.
The connector of the high voltage transformer is
disconnected.
The high voltage harness is disconnected or broken.
The main charger is not assembled properly.
The connector of the high voltage transformer is
disconnected.
The high voltage harness is disconnected or broken.
Check &
Remedy
Remedy
Use Sim. 8-2 to check the operation of the main
charger.
Check for disconnection of the main charger.
Replace the high voltage unit.
charger.
Check for disconnection of the main charger.
Replace the high voltage unit.
Detail
The charger cleaner shift is not completed within the
specified time
specified time
Section
PCU
Cause
Charger unit trouble.
RE sensor, HP sensor, motor, PCU PWB, harness
connection trouble.
RE sensor, HP sensor, motor, PCU PWB, harness
connection trouble.
Check &
Remedy
Remedy
Check connection of the charger unit, the PCU PWB,
and the harness.
and the harness.
Detail
The CCD black scan level is abnormal when the copy
lamp is turned off
lamp is turned off
Section
SCU
Cause
Installation failure of the harness to the CCD unit
CCD unit abnormality, DSPF PWB abnormality.
CCD unit abnormality, DSPF PWB abnormality.
Check &
Remedy
Remedy
Check installation of the harnesses to the CCD unit.
Check the CCD unit and the DSPF PWB.
Check the CCD unit and the DSPF PWB.
Detail
The CCD white reference plate scan level is abnormal
when the copy lamp is turned on
when the copy lamp is turned on
Section
SCU
Cause
Installation failure of the harness to the CCD unit
Dirt on the mirror, the lens, and the reference white plate.
Copy lamp lighting trouble.
CCD unit abnormality, DSPF PWB abnormality.
Shading Sim. not executed / Shading ROM abnormality.
Dirt on the mirror, the lens, and the reference white plate.
Copy lamp lighting trouble.
CCD unit abnormality, DSPF PWB abnormality.
Shading Sim. not executed / Shading ROM abnormality.
Check &
Remedy
Remedy
Check installation of the harnesses to the CCD unit.
Check installation of the harnesses to the copy lamp
unit. Clean the mirror, the lens, and the reference
white plate.
Check the CCD unit and the DSPF PWB.
Check installation of the harnesses to the copy lamp
unit. Clean the mirror, the lens, and the reference
white plate.
Check the CCD unit and the DSPF PWB.
Detail
The written register value cannot be read out
Section
SCU
Cause
DSPF PWB abnormality
Check &
Remedy
Remedy
Check the DSPF PWB.
Detail
The system memory cannot be accessed
Section
ICU
Cause
Expansion memory installation state abnormality.
Data garble.
Data garble.
Check &
Remedy
Remedy
Check installation of the system expansion memory.
Check memory read / write with Sim. 60-01.
Replace the expansion memory. (If it is installed.)
Replace the MFPC PWB.
Check memory read / write with Sim. 60-01.
Replace the expansion memory. (If it is installed.)
Replace the MFPC PWB.
Detail
Data abnormality
Section
ICU
Cause
Image transfer abnormality
Check &
Remedy
Remedy
Check connection of the connector of the MFPC PWB
and the W-ICU PWB.
Replace the W-ICU PWB.
Replace the MFPC PWB.
and the W-ICU PWB.
Replace the W-ICU PWB.
Replace the MFPC PWB.
Detail
HDD breakdown
HDD connection trouble
File management area data abnormality (when FAT is
broken.)
HDD connection trouble
File management area data abnormality (when FAT is
broken.)
Section
ICU
Cause
The ICU PWB is not properly installed to the HDD.
The HDD does not operate normally.
ICU PWB abnormality.
The HDD does not operate normally.
ICU PWB abnormality.
Check &
Remedy
Remedy
Check installation of the HDD to the W-ICU PWB.
Check connection of the harness to the HDD of the W-
ICU PWB.
Check read / write of HDD with Sim. 62-2, 3.
Replace the HDD.
Replace the W-ICU PWB.
Replace the MFPC PWB.
Check connection of the harness to the HDD of the W-
ICU PWB.
Check read / write of HDD with Sim. 62-2, 3.
Replace the HDD.
Replace the W-ICU PWB.
Replace the MFPC PWB.
Detail
An error occurs in the HDD-ASIC self test when booting
Section
ICU
Cause
HDD-ASIC abnormality
Check &
Remedy
Remedy
Check installation of the HDD-ASIC of the ICU PWB.
Replace the ICU PWB.
Replace the ICU PWB.
Detail
The W-ICU memory cannot be accessed
Section
ICU
Cause
W-ICU expansion memory installation abnormality.
Data garble.
Insufficient memory capacity.
Data garble.
Insufficient memory capacity.
Check &
Remedy
Remedy
Check instillation the expansion memory.
Check read / write memory with Sim. 60-01.
Replace the expansion memory. (If it is installed.)
Replace the W-ICU PWB.
Check read / write memory with Sim. 60-01.
Replace the expansion memory. (If it is installed.)
Replace the W-ICU PWB.
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 10
E7-06
Decode error trouble
E7-08
W-ICU memory specification error
(ICU1)
(ICU1)
E7-09
W-ICU memory combination error
(ICU1)
(ICU1)
E7-10
Shading trouble (Black correction)
E7-11
Shading trouble (White correction)
E7-14
CCD-ASIC abnormality (OC)
E7-18
W-ICU memory specification error
(ICU2)
(ICU2)
E7-19
W-ICU memory combination error
(ICU2)
(ICU2)
E7-20
LSU BD detection trouble
E7-21
LSU LD deterioration trouble
Detail
A decode error occurs when making images
Section
ICU
Cause
Compression data abnormality.
HDD installation abnormality.
Data garble in image compression / transfer.
MPFC PWB abnormality, or W-ICU PWB abnormality.
HDD installation abnormality.
Data garble in image compression / transfer.
MPFC PWB abnormality, or W-ICU PWB abnormality.
Check &
Remedy
Remedy
Check installation of the PWB. (PCI bus)
If the job when the error occurred was FAX,
check installation of the FAX PWB.
For the other cases, check installation of the MFPC
PWB, W-ICU PWB, and the HDD PWB.
Replace the W-ICU PWB.
Replace the MFPC PWB.
If the job when the error occurred was FAX,
check installation of the FAX PWB.
For the other cases, check installation of the MFPC
PWB, W-ICU PWB, and the HDD PWB.
Replace the W-ICU PWB.
Replace the MFPC PWB.
Detail
A DIMM of a different specification is detected on the
W-ICU memory slot
W-ICU memory slot
Section
ICU
Cause
A DIMM of a different specification is installed to the W-
ICU memory slot.
(Support memory: ROW=13bit, Column=10bit)
ICU memory slot.
(Support memory: ROW=13bit, Column=10bit)
Check &
Remedy
Remedy
Check the DIMM which is installed.
Detail
Combination error of the W-ICU memory slot installation
Section
ICU
Cause
A DIMM installed to the default slot is not 512MB.
A DIMM installed to the expansion slot is not 256MB.
A DIMM installed to the expansion slot is not 256MB.
Check &
Remedy
Remedy
Check combination of DIMM installation.
Detail
CCD black scan level abnormality when the copy lamp
is turned off
is turned off
Section
SCU
Cause
Installation failure of the harness to the CCD unit
CCD unit abnormality, SCU PWB abnormality.
CCD unit abnormality, SCU PWB abnormality.
Check &
Remedy
Remedy
Check installation of the harnesses to the CCD unit.
Check the CCD unit. Check the SCU PWB.
Check the CCD unit. Check the SCU PWB.
Detail
CCD white reference plate scan level abnormality when
the copy lamp is turned on
the copy lamp is turned on
Section
SCU
Cause
Installation failure of the harness to the CCD unit
Dirt on the mirror, lens, and the reference white plate.
Copy lamp lighting abnormality.
CCD unit abnormality, SCU PWB abnormality.
Dirt on the mirror, lens, and the reference white plate.
Copy lamp lighting abnormality.
CCD unit abnormality, SCU PWB abnormality.
Check &
Remedy
Remedy
Check installation of the harnesses to the CCD unit.
Check installation of the harnesses to the copy lamp
unit.
Clean the mirror, the lens, and the reference white plate.
Check the CCD unit and the SCU PWB.
Check installation of the harnesses to the copy lamp
unit.
Clean the mirror, the lens, and the reference white plate.
Check the CCD unit and the SCU PWB.
Detail
The written register value cannot be read
Section
SCU
Cause
SCU PWB abnormality
Check &
Remedy
Remedy
Check the SCU PWB.
Detail
DIMM of different specification is detected in the W-ICU
memory slot
memory slot
Section
ICU
Cause
DIMM of different specification is inserted to the W-ICU
memory slot.
(Support memory: ROW=13bit, Colum=10bit part)
memory slot.
(Support memory: ROW=13bit, Colum=10bit part)
Check &
Remedy
Remedy
Check the installed DIMM.
Detail
Combination error of the W-ICU memory slot installation
Section
ICU
Cause
DIMM of other than 256MB is inserted into the default
slot.
DIMM of other than 512MB is inserted to the expansion
slot.
slot.
DIMM of other than 512MB is inserted to the expansion
slot.
Check &
Remedy
Remedy
Check the installation combination of DIMM.
Detail
The BD signal of the LSU is not detected
Section
PCU
Cause
Optical axis shift.
BK laser deterioration, power down.
BD PWB abnormality.
Disconnection or improper insertion of the harness and
the connector between the LD / BD PWB and the LSU
control PWB.
BK laser deterioration, power down.
BD PWB abnormality.
Disconnection or improper insertion of the harness and
the connector between the LD / BD PWB and the LSU
control PWB.
Check &
Remedy
Remedy
Check the LSU operation with Sim. 61-1.
Check connection of PWB and the harness in the LSU.
Replace the LSUcnt, BD PWB.
If the trouble is not canceled, replace the LSU.
Check connection of PWB and the harness in the LSU.
Replace the LSUcnt, BD PWB.
If the trouble is not canceled, replace the LSU.
Detail
Laser is not lighted normally.
Section
PCU
Cause
Laser deterioration, power fall.
Disconnection or insertion failure of the harness or
connector between the LD PWB and the LSUcnt PWB.
Disconnection or insertion failure of the harness or
connector between the LD PWB and the LSUcnt PWB.
Check &
Remedy
Remedy
Use Sim. 61-1 to check the operation of the LSU.
Check connection of the harness in each PWB in the
LSU.
Replace the LSUcnt PWB.
If the trouble is not canceled, replace the LSU.
Check connection of the harness in each PWB in the
LSU.
Replace the LSUcnt PWB.
If the trouble is not canceled, replace the LSU.
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 11
E7-27
LSU configuration check error
E7-28
LSU control ASIC connection
abnormality
abnormality
E7-29
LSU ASIC frequency abnormality
E7-35
CIS-ASIC communication trouble
E7-36
CIS-ASIC black level detection
abnormality
abnormality
E7-37
CIS-ASIC white level detection
abnormality
abnormality
E7-55
PWB information sum error
(engine detection)
(engine detection)
E7-60
Controller connection trouble
E7-61
Controller connection trouble (engine)
Detail
LSU PWB control PWB FPGA configuration trouble
Section
PCU
Cause
Communication connector connection trouble between
the PCU PWB and the LSU cnt PWB.
Harness trouble between the PSU PWB and the LSU
cnt PWB (interface PWB).
PCU PWB trouble or LSU cnt PWB (interface PWB)
trouble.
the PCU PWB and the LSU cnt PWB.
Harness trouble between the PSU PWB and the LSU
cnt PWB (interface PWB).
PCU PWB trouble or LSU cnt PWB (interface PWB)
trouble.
Check &
Remedy
Remedy
Check connection of the connector and the harness
between the PCU PWB and the LSU cnt PWB (interface
PWB).
If the trouble is not canceled, replace the LSUcnt PWB,
or replace the PCU PWB.
between the PCU PWB and the LSU cnt PWB (interface
PWB).
If the trouble is not canceled, replace the LSUcnt PWB,
or replace the PCU PWB.
Detail
Access error between the CPU on the PCU PWB and
the LSU control ASIC
the LSU control ASIC
Section
PCU
Cause
Communication connector connection trouble between
the PCU PWB and the LSUcnt PWB (interface PWB).
Harness trouble between the PCU PWB and the
LSUcnt PWB.
PCU PWB or LSUcnt PWB (interface PWB) trouble.
the PCU PWB and the LSUcnt PWB (interface PWB).
Harness trouble between the PCU PWB and the
LSUcnt PWB.
PCU PWB or LSUcnt PWB (interface PWB) trouble.
Check &
Remedy
Remedy
Check connection of the connector and the harness
between the PCU PWB and the LSUcnt PWB (interface
PWB).
If the trouble still remains, replace the LSUcnt PWB and
the PCU PWB.
between the PCU PWB and the LSUcnt PWB (interface
PWB).
If the trouble still remains, replace the LSUcnt PWB and
the PCU PWB.
Detail
The external oscillator used in the LSU ASIC and the
internal oscillation circuit abnormality
internal oscillation circuit abnormality
Section
PCU
Cause
Abnormality in the oscillator on the LSU ASIC PWB, the
oscillator circuit resistor and capacitor, the LSU ASIC
itself.
oscillator circuit resistor and capacitor, the LSU ASIC
itself.
Check &
Remedy
Remedy
Replace the LSUcnt PWB.
Detail
Communication trouble between the CPU in the PCU
PWB and the CIS-ASIC (clock synchronization)
PWB and the CIS-ASIC (clock synchronization)
Section
PCU
Cause
Harness trouble between the PCU PWB and the
PEDCis PWB.
PEDCis PWB trouble, PCU PWB trouble.
Insertion failure of the drawer connector of the PS unit.
PEDCis PWB.
PEDCis PWB trouble, PCU PWB trouble.
Insertion failure of the drawer connector of the PS unit.
Check &
Remedy
Remedy
Check the harness between the PCU PWB and the
PEDCis PWB.
Check the PEDCis PWB. Check the PCU PWB.
If the trouble is not canceled, replace the PEDCis PWB,
or replace the PCU PWB.
PEDCis PWB.
Check the PEDCis PWB. Check the PCU PWB.
If the trouble is not canceled, replace the PEDCis PWB,
or replace the PCU PWB.
Detail
The scan level of the white reference plate is abnormal
when the lamp is lighted
when the lamp is lighted
Section
PCU
Cause
Improper installation of the CIS unit.
Harness trouble between CIS unit and PEDCis PWB.
Abnormality of CIS unit or PEDCis PWB.
Dirt on the black reference plate.
Harness trouble between CIS unit and PEDCis PWB.
Abnormality of CIS unit or PEDCis PWB.
Dirt on the black reference plate.
Check &
Remedy
Remedy
Check installation of the CIS unit.
Check the harness between the CIS unit and the
PEDCis PWB.
Clean the black reference plate.
If the trouble is not canceled, replace the CIS unit, or
replace the PEDCis PWB.
Check the harness between the CIS unit and the
PEDCis PWB.
Clean the black reference plate.
If the trouble is not canceled, replace the CIS unit, or
replace the PEDCis PWB.
Detail
The scan level of the white reference plate is abnormal
when the lamp is lighted
when the lamp is lighted
Section
PCU
Cause
Improper installation of the CIS unit.
Harness trouble between CIS unit and PEDCis PWB.
Abnormality of CIS unit or PEDCis PWB.
Dirt on the white reference plate.
Harness trouble between CIS unit and PEDCis PWB.
Abnormality of CIS unit or PEDCis PWB.
Dirt on the white reference plate.
Check &
Remedy
Remedy
Check installation of the CIS unit.
Check the harness between the CIS unit and the
PEDCis PWB.
Clean the white reference plate.
If the trouble cannot be canceled, replace the CIS unit
or the PEDCis PWB.
Check the harness between the CIS unit and the
PEDCis PWB.
Clean the white reference plate.
If the trouble cannot be canceled, replace the CIS unit
or the PEDCis PWB.
Detail
EEPROM PWB information sum error
Section
PCU
Cause
EEPROM device trouble.
EEPROM device contact trouble.
Device access error due to noises.
EEPROM device contact trouble.
Device access error due to noises.
Check &
Remedy
Remedy
Replace the PWB.
Detail
Unknown PWB identification information is detected on
the controller PWB
the controller PWB
Section
ICU
Cause
The PWB / firmware which is not supported by the
machine specifications is connected.
machine specifications is connected.
Check &
Remedy
Remedy
Check the firmware kind and the version.
Controller PWB abnormality
Controller PWB abnormality
Detail
Controller connection trouble.
Compatibility trouble between the controller and the
engine.
Compatibility trouble between the controller and the
engine.
Section
ICU
Cause
Combination error between the controller PWB and the
engine.
engine.
Check &
Remedy
Remedy
Check the controller PWB.
Check combination between the controller PWB and the
engine.
Check combination between the controller PWB and the
engine.
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 12
E7-62
Controller connection trouble
(scanner)
(scanner)
E7-63
Controller connection trouble
(Operation)
(Operation)
E7-65
PWB information sum error
(controller detection)
(controller detection)
E7-70
Scanner connection trouble
E7-71
DSPF connection trouble
E7-75
PWB information sum error
(scanner detection)
(scanner detection)
E7-80
Communication trouble between the
ICU and the scanner (ICU detection)
ICU and the scanner (ICU detection)
E7-90
Communication trouble between the
ICU and the PCU. (ICU detection)
ICU and the PCU. (ICU detection)
EE-EL
Auto development adjustment trouble
(Overtone abnormality)
<Detected only when Sim. 25-2,
no trouble memory, only display>
(Overtone abnormality)
<Detected only when Sim. 25-2,
no trouble memory, only display>
EE-EU
Auto development adjustment trouble
(Undertone abnormality)
<Detected only when Sim. 25-2,
no trouble memory, only display)
(Undertone abnormality)
<Detected only when Sim. 25-2,
no trouble memory, only display)
Detail
Controller connection trouble.
Compatibility trouble between the controller and the
scanner.
Compatibility trouble between the controller and the
scanner.
Section
ICU
Cause
Combination error between the controller PWB and the
engine.
engine.
Check &
Remedy
Remedy
Check combination between the controller PWB and the
scanner.
scanner.
Detail
Controller connection trouble.
Compatible trouble between the controller and the
operation.
Compatible trouble between the controller and the
operation.
Section
ICU
Cause
Combination error between the controller PWB and the
operation.
operation.
Check &
Remedy
Remedy
Check the controller PWB.
Check combination between the controller PWB and the
operation.
Check combination between the controller PWB and the
operation.
Detail
EEPROM PWB information sum error
Section
ICU
Cause
EEPROM device trouble.
EEPROM device contact trouble.
Device access error due to noises.
EEPROM device contact trouble.
Device access error due to noises.
Check &
Remedy
Remedy
Replace the PWB.
Detail
Unknown PWB identification information is detected on
the SCU PWB
the SCU PWB
Section
SCU
Cause
The PWB / firmware which is not supported by the
machine specifications is connected.
machine specifications is connected.
Check &
Remedy
Remedy
Check the firmware kind and the version.
Check the SCU PWB.
Check the SCU PWB.
Detail
An unknown PWB identification information is detected
in the DSPF PWB/ combination abnormality with the
SCU PWB
in the DSPF PWB/ combination abnormality with the
SCU PWB
Section
SCU
Cause
PWB / firmware which does not support the machine
specifications is connected.
specifications is connected.
Check &
Remedy
Remedy
Firmware kind / Version check.
DSPF PWB trouble.
DSPF PWB trouble.
Detail
EEPROM PWB information sum error
Section
SCU
Cause
EEPROM device trouble.
EEPROM device contact trouble.
Device access error due to noises.
EEPROM device contact trouble.
Device access error due to noises.
Check &
Remedy
Remedy
Replace the SCU PWB.
Detail
Communication establishment error, framing error,
parity error, protocol error
parity error, protocol error
Section
ICU
Cause
Slave unit PWB connector connection trouble.
Slave unit PWB and ICU PWB harness trouble.
Slave unit PWB mother board connector pin breakage.
Slave unit PWB and ICU PWB harness trouble.
Slave unit PWB mother board connector pin breakage.
Check &
Remedy
Remedy
Check connection of the connector and the harness
between the slave unit PWB and the ICU PWB.
Check grounding of the machine.
between the slave unit PWB and the ICU PWB.
Check grounding of the machine.
Detail
Communication establishment error, framing error,
parity error, protocol error
parity error, protocol error
Section
ICU
Cause
Slave unit PWB connector connection trouble.
Slave unit PWB and ICU PWB harness trouble.
Slave unit PWB mother board connector pin breakage.
Slave unit PWB and ICU PWB harness trouble.
Slave unit PWB mother board connector pin breakage.
Check &
Remedy
Remedy
Check connection of the connector and the harness
between the slave unit PWB and the ICU PWB.
Check grounding of the machine.
between the slave unit PWB and the ICU PWB.
Check grounding of the machine.
Detail
The sample level is 76 or less or the control voltage is
208 or above
208 or above
Section
PCU
Cause
Toner density sensor trouble, charging voltage /
developing voltage trouble, toner density trouble,
developing unit trouble, PCU PWB trouble.
Check &
Remedy
Remedy
Execute the auto development adjustment with
Sim. 25-2.
Sim. 25-2.
Detail
The sample level is 178 or above or the control voltage
is 51 or less
is 51 or less
Section
PCU
Cause
Toner density sensor trouble, charging voltage /
developing voltage trouble, toner density trouble,
developing unit trouble, PCU PWB trouble.
Check &
Remedy
Remedy
Execute the auto development adjustment with
Sim. 25-2.
Sim. 25-2.
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