MX-FNX2 (serv.man11). Section 9 - Self-diagnosis and Trouble Codes . - Sharp Copying Equipment Service Manual (repair manual). Page 8

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MX-FNX2/AR-PN1/MX-RBX1  SELF DIAG MESSAGE AND TROUBLE CODE  9 – 8
(3) Paper pass (Paper transport section)
a. The transport motor (FFM) does not operate.
b. A fan motor alarm is generated.
c. A paper jam occurs in the entry port of the interface
transport unit.
Case 1
Cause
Connector pin loose connection
Check & 
Remedy
Check connection of the connectors. 
(CN309, CN307, CN306, CN303, CN301, CN21)
Case 2
Cause
Harness disconnection
Check & 
Remedy
Execute the conduction test between connectors. If 
disconnection is found, replace the defective 
connectors. 
Case 3
Cause
Motor lead breaking
Check & 
Remedy
Execute the conduction test of coil. If disconnection 
is found, replace the coil. 
Case 4
Cause
Control PWB trouble
Check & 
Remedy
If the motor does not operate in the motor 
individual operation mode, replace the control 
PWB. 
Case 1
Cause
Pinching
Check & 
Remedy
Visually check the suction port and remove foreign 
materials.
Case 2
Cause
Connector pin loose connection
Check & 
Remedy
Check connection of the connectors. 
(CN313, CN307, CN306, CN304, CN301, CN22, 
CN23)
Case 3
Cause
Harness disconnection
Check & 
Remedy
Execute the conduction test between connectors. If 
disconnection is found, replace the defective 
connectors. 
Case 4
Cause
Motor trouble
Check & 
Remedy
If the motor does not operate in the motor 
individual operation mode, replace the motor. 
Case 5
Cause
Control PWB trouble
Check & 
Remedy
If the motor does not operate in the motor 
individual operation mode, replace the control 
PWB. 
Case 1
Cause
Flapper solenoid connector pin loose connection
Check & 
Remedy
Check connection of the connectors. 
(CN312, CN307, CN306, CN304, CN301, CN22, 
CN23)
Case 2
Cause
Harness disconnection
Check & 
Remedy
Execute the conduction test between connectors. If 
disconnection is found, replace the defective 
connectors. 
Case 3
Cause
Flapper solenoid trouble
Check & 
Remedy
If there is no conduction between CN312 1 pin and 
2pin, replace the solenoid. 
Case 4
Cause
Control PWB trouble
Check & 
Remedy
If the flapper does not operate in the individual 
operation mode, replace the control PWB.
Case 1
Cause
Paper jam
Check & 
Remedy
Visually check to remove paper jam. 
Cause
Sensor connector pin loose connection
Check & 
Remedy
Check connection of the connectors. 
(CN310, CN311, CN307, CN306, CN304, CN301, 
CN22, CN23)
Case 2
Cause
Harness disconnection
Check & 
Remedy
Execute the conduction test between connectors. If 
disconnection is found, replace the defective 
connectors. 
Cause
Sensor trouble
Check & 
Remedy
Replace the sensor at the paper jam position. 
Case 3
Cause
Sensor flag operation trouble
Check & 
Remedy
Visually check the sensor flag operation. If it is 
caught in the operation, replace the sensor flag. 
Case 4
Cause
Control PWB trouble
Check & 
Remedy
If the sensor level varies but the phenomenon 
remains when each sensor is turned ON/OFF, 
replace the control PWB. 
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