5-61
Troubleshooting
NAC board communication
abnormal
Printer controller board
communication abnormal
Scanner synchronization
abnormal
ADF communication abnormal
Finisher communication
abnormal
(1) NAC PCB connector is shorted or broken.
(2) NAC PCB is defective.
(3) LVPS is defective.
(4) CPU PCB connector is shorted or broken.
(5) CPU is defective.
(6) Riser card PCB is defective.
(1) Printer controller PCB connector is shorted
or broken.
(2) Printer controller PCB is defective.
(3) LVPS connector is shorted or broken.
(4) LVPS is defective.
(5) CPU PCB connector (
CN203
) is shorted
or broken. (FP-D250/D350)
(6) Image Processing PCB connector (
CN203
)
is shorted or broken. (FP-D450/D600)
(7) CPU is defective.
(8) Image processing PCB is defective.
(FP-D450/D600)
(1) Laser control PCB connector is shorted or
broken.
(2) Laser control PCB is defective.
(3) CPU PCB connector is shorted or broken.
(4) CPU is defective.
(5) Image processing PCB is defective.
(FP-D450/D600)
(1) ADF connector is not securely connected.
(2) Copier CPU PCB connector (
CN19
/
25
)
is shorted or broken. (FP-D250/D350)
(3) Image Processing PCB connector (
CN19
)
is defective. (FP-D450/D600)
(4) Copier CPU PCB is defective.
(5) ADF CPU PCB connector is shorted or
broken.
(6) ADF CPU PCB is defective.
(7) Image Processing PCB is defectve.
(FP-D450/D600)
(1) Finisher connector is not securely
connected.
(2) (FP-D250/D350)
Copier CPU connector (
CN15
) is shorted
or broken.
(FP-D450/D600)
Copier CPU connector (
CN15
) is shorted
or broken.
(3) Copier CPU PCB is defective.
(4) Finisher CPU PCB connector (CN21) is
shorted or broken.
(5) Finisher CPU PCB is defective.
Code No.
Function
Check points
E5-13
E5-15
E5-17
E5-21
E5-22