Engine Connection Trouble; Pwb Information Sum Error (Engine Detection); Controller Connection Trouble (Engine Detection); Controller Connection Trouble - Sharp MX-2300 G Service Manual

E7-50

Engine connection trouble

Trouble content Unknown PWB identification information is detected in
the PCU PWB.
Section PCU
Case 1 Cause A PWB which is incompatible with the machine
specifications is connected.
Check 1) Replace the PCU PWB.
and 2) Replace the LSU PWB.
remedy
Case 2 Cause A firmware which is incompatible with the machine
specifications is used.
Check Check the kind and the version of the firmware.
and
remedy
E7-55 PWB information sum error (Engine
detection)
Trouble content EEPROM PWB information sum error
Section PCU
Case 1 Cause 1) EEPROM device error
2) EEPROM device contact failure
3) Device access error due to noises
Check Replace the PCU PWB.
and
remedy
E7-60 Controller connection trouble (Engine
detection)
Trouble content Unknown PWB kind information is detected in the
MFPcnt PWB.
A PWB/firmware which is not compatible with the
machine specifications is connected.
Section MFP
Case 1 Cause Controller PWB trouble
Check Replace the controller PWB.
and
remedy
Case 2 Cause A firmware which is not compatible with the machine
specifications is applied.
Check Check the kind and the version of the firmware.
and
remedy
E7-61

Controller connection trouble

(Engine)
Trouble content MFPcnt PWB connection trouble
Compatibility trouble between the controller and the
engine
Section MFP
Case 1 Cause Combination trouble of the controller PWB and the
engine
Check Check the controller PWB.
and Check the combination between the controller PWB
remedy and the engine.
E7-62 Controller connection trouble
(Scanner)
Trouble content Controller connection trouble
Compatibility trouble between the controller and the
scanners
Section MFP
Case 1 Cause Combination trouble between the controller PWB and
the engine
Check Replace the controller PWB.
and Check the combination between the controller PWB
remedy and the engine.
MX-2300/2700 N/G SELF DIAG AND TROUBLE CODE 8 – 12
E7-65 PWB information sum error (Control-
ler detection)
Trouble content EEPROM PWB information sum error
Section MFP
Case 1 Cause 1) EEPROM device trouble
2) EEPROM device contact failure
3) Device access error due to noises
Check Replace the MFPcnt PWB.
and
remedy
E7-70 Scanner connection trouble
Trouble content Unknown identification information is detected in the
SCU PWB.
Section SCU
Case 1 Cause SCU PWB trouble
Check Replace the SCU PWB.
and
remedy
Case 2 Cause A firmware which is incompatible with the machine
specifications is connected.
Check Check the kind and the version of the firmware.
and
remedy
E7-75 PWB information sum error (Scanner
detection)
Trouble content EEPROM PWB information sum error
Section SCU
Case 1 Cause 1) EEPROM device trouble
2) EEPROM device contact failure
3) Device access error due to noises
Check Replace the scanner control PWB.
and
remedy
E7-80 Communication trouble between the
controller and the scanner
Trouble content Communication trouble between the MFP and the
scanner MFP detection
Communication establishment error/Framing/Parity/
Protocol error
Section MFP
Case 1 Cause SCU PWB connector connection trouble
Check Check the connector connection between the SCU
and PWB and the MFPcnt PWB.
remedy
Case 2 Cause Harness trouble between the SCU PWB and the
MFPcnt PWB
Check Check the harness between the SCU PWB and the
and MFPcnt PWB.
remedy
Case 3 Cause Broken connector pin of the SCU PWB mother board
Check Check grounding of the machine.
and
remedy