Read Sharp MX-M850 (serv.man38) Service Manual online
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.
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