Panasonic FP-7818, Service Manual & Parts Manual

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E5-41: Registration timing control circuit abnormal
When the copier stops, the optics scan and registration drive start driving
or when the copier is operated, the optics scan and registration operating are
not driven within a predetermined time.
IC5 on CPU PCB is defective.
E5-42: Total counter connection
When the total counter is disconnected.
Is the total counter connector NO Insert the total counter securely.
inserted securely?
YES
Total counter is defective.
Copier CPU PCB is defective.
E5-50: I/O Communication error
When an abnormal communication is detected.
Main CPU (IC5), paper feed driver, ADU driver or LCC driver is defective.
E6-03: Paper length home position detecting sensor
When the paper length motor drives to home position, paper length
home position detecting sensor is not sensed within a predetermined time.
Does the paper length motor rotate? YES Check paper length home position
NO detecting sensor output PSLSN(CN-2)
Changed: Duplex unit control PCB is defective.
Not changed: Check DC+5V on CN-1.
Detected: Check sensor.
Not detected: Check DC+5V line.
Is DC+24V detected on CN653-4? NO Check DC+24V line.
YES
Paper length motor is defective.
Duplex unit control PCB is defective.