MX-M950, MX-MM1100 (serv.man39). Section 8 Self Diagnostics Trouble Codes - Sharp Copying Equipment Service Manual (repair manual). Page 17

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MX-M1100 SELF DIAG AND TROUBLE CODE  8 – 17
 
F1-64
No. 1 pickup motor trouble
 
F1-65
No. 2 pickup motor trouble
 
F1-66
No. 1 lift motor trouble  
(finisher + saddle unit + inserter) 
Lift motor 1 trouble (booklet maker)
 
F1-67
No. 2 lift motor trouble  
(finisher + saddle unit + inserter) 
Lift motor 2 trouble (booklet maker)
 
F1-70
Communication trouble between 
peripheral devices  
(Z-folding machine detection)
 
F1-71
Varistor abnormality
 
F1-72
Z-folding machine EEPROM 
abnormality
 
F1-73
Separation sensor adjustment 
abnormality
 
F1-74
Pressure sensor adjustment 
abnormality
Detail
The paper feed roller drive motor abnormality in the 
inserter upper side paper feed section
Section
PCU
Cause
Motor lock, control PWB trouble, home position sensor 
breakdown, connection harness / connector connection 
trouble.
Check & 
Remedy
Use Sim. 3-31 to check the operation of the No. 1 pick-
up motor. 
Check connection from the control PWB to the motor. 
Replace the control PWB and the sensor part.
Detail
The paper feed roller drive motor abnormality in the 
inserter lower side paper feed section
Section
PCU
Cause
Motor lock, control PWB trouble, home position sensor 
breakdown, connection harness / connector connection 
trouble.
Check & 
Remedy
Use Sim. 3-31 to check the operation of the No. 2 pick-
up motor. 
Check connection from the control PWB to the motor. 
Replace the control PWB and the sensor part.
Detail
The tray lift-up drive motor abnormality in the inserter 
upper side paper feed section
Section
PCU
Cause
Motor lock, control PWB trouble, home position sensor 
breakdown, connection harness/connector connection 
trouble.
Check & 
Remedy
Use Sim. 3-31 to check the operation of the No. 1 lift 
motor. 
Check connection from the control PWB to the motor. 
Replace the control PWB and the sensor part.
Detail
The tray lift-up drive motor abnormality in the inserter 
lower side paper feed section
Section
PCU
Cause
Motor lock, control PWB trouble, home position sensor 
breakdown, connection harness/connector connection 
trouble.
Check & 
Remedy
Use Sim. 3-31 to check the operation of the No. 2 lift 
motor. 
Check connection from the control PWB to the motor. 
Replace the control PWB and the sensor part.
Detail
Communication abnormality between the units 
connected to the lower stream of the Z-folding unit /
No response is made to a command send from the 
Z-folding unit
Section
PCU
Cause
Communication line noises, control PWB trouble, 
connection  trouble, connection harness breakage.
Check & 
Remedy
Turn OFF / ON the power. Check connection of the 
connector with the lower stream machine of the Z-
folding machine. Replace the control PWB of the lower 
stream machine of the inserter. 
Detail
Varistor abnormality is detected on the Z-folding unit 
control PWB
Section
PCU
Cause
A high voltage noise such as lighting surge has 
occurred, or PWB trouble.
Check & 
Remedy
Replace the PWB. 
Detail
Data write error to the EEPROM on the Z-folding unit
Section
PCU
Cause
Control PWB trouble, garbles data due to line noise.
Check & 
Remedy
Use the simulation to rewrite the data and check again. 
If the trouble occurs after recheck, replace the PWB. 
Detail
The sensor input value does not become the proper 
level in the automatic adjustment of the separation 
sensor. 
Section
PCU
Cause
Trouble the sensor. Trouble the control PWB. 
Check & 
Remedy
Replace the sensor. Replace the control PWB. 
Detail
The sensor input value does not become the proper 
level in the automatic adjustment of the pressure 
sensor. 
Section
PCU
Cause
Trouble the sensor. Trouble the control PWB. 
Check & 
Remedy
Replace the sensor. Replace the control PWB. 
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