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1) User error
Code
Item
Uo
Key counter not installed (option) or
Access code number was not input
U1
Front door open
U4
Finisher Inverting unit/Inverting shift
tray (option)
Check points
1) Key counter is not installed correctly.
2) Access code number is not input.
3) Key counter connector is shorted or broken.
4) Key counter is defective.
5) LVPS connector is shorted or broken.
6) LVPS is defective.
7) (FP-D250/D350)
CPU PCB connector (CN14) is shorted or
broken.
(FP-D450/D600)
CPU PCB connector (CN14) is shorted or
broken.
8) CPU PCB is defective.
1) Is the front door closed correctly ?
2) Front door open/close sensor connector is
shorted or broken.
3) Front door open close sensor is defective.
4) LVPS connector is shorted or broken.
5) LVPS is defective.
6) (FP-D250/D350)
CPU PCB connector (CN5) is shorted or
broken.
(FP-D450/D600)
CPU PCB connector (CN5) is shorted or
broken.
7) CPU PCB is defective.
1) Are the exit options installed correctly ?
2) Exit options connector is shorted or broken.
3) Exit options connector is defective.
4) Finisher CPU PCB connector is shorted or
broken.
5) Finisher CPU PCB is defective.
6) LVPS connector is shorted or broken.
7) LVPS is defective.
8) (FP-D250/D350)
CPU PCB connector (CN15) is shorted or
broken.
(FP-D450/D600)
CPU PCB connector (CN15) is shorted or
broken.
9) CPU PCB is defective.
5-41
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