Oki Data CONFIDENTIAL
45850101TH Rev.1
2-58
2. TROUBLESHOOTING PROCEDURES
Check item
Check work
Actions to be taken
at NG
(3-3-2-4) Check the system connection
Hopping motor drive
cable
Check the connection condition of the cable.
Check if the connector is connected in the half-
way only or not, and check if the connector is
inserted in a slanted angle or not.
Check also that cables are assembled without
any abnormality.
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Hopping motor drive
cable
Check that any cable is not pinched during
assembling of the printer.
Remove the MOTERCL connector of the CU/PU
board and check the following at the cable side.
Short circuit between pin-5 – FG
Short circuit between pin-6 – FG
Short circuit between pin-7 – FG
Short circuit between pin-8 – FG
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Hopping motor
Remove the MOTERCL connector of the CU/
PU board and check that approx. 3.4
Ω
can be
measured between pin-5 -pin-6 and pin-7 -pin-8
respectively at the cable end.
Replace the
hopping motor.
How to remove the paper (Error code 390: Multipurpose tray)
(1) If there is any papers on the MP Tray, lift the paper set cover and take the paper
out.
(2) Insert your finger into the recess on the right side of the printer and pull the front
cover open lever to open the front cover forward.
a
b
