Canon FAX L1000 Service Manual page 598

FAX-L1000 Chapter 5: Appendix
"5F-56 ERROR" (Duplexing unit exhaust fan (FM701) malfunction)
<Possible causes>
1.Poor contact in the connectors of the FM701 drive signal line
Action: Reconnect the intermediate connectors J718 and J719, then the duplexing unit
driver board connector J707.
2.Defective fan motor
Action: Replace the exhaust fan.
3.Defective duplexing unit driver board
Action: Replace the duplexing unit driver board.
"5F-59 ERROR" (Cooling fan (FM101) malfunction)
<Possible causes>
1.Poor contact in the connector of the FM101 drive signal line
Action: Reconnect the ECNT board connector J54.
2.Defective fan motor
Action: Disconnect the ECNT board connector J54. Turn the power ON, then measure the
voltage between ECNT board connector J54-1 (/FON) and J54-3 (GND). If the voltage
changes from 0V to about 24V, replace the cooling fan.
3.Defective ECNT board
Action: Replace the ECNT board.
4.Defective SCNT board
Action: Replace the SCNT board.
5.Defective TWINS board
Action: Replace the TWINS board.
6.Defective PDL board
Action: Replace the PDL board.
"5F-60 ERROR" (Duplex Option error)
<Possible causes>
1.Defective duplexing unit connector
Action: Remove the duplexing unit from the printer and check the connector. Replace the
connector if any failure is found.
2.Defective printer connector
Action: Check the connector. Replace the connector if any failure is found.
3.Defective duplexing unit driver board
Action: Replace the duplexing unit driver board.
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