Oki MC873dn Maintenance Manual page 83

Oki Data CONFIDENTIAL
Check item
(3-3-2-4) Check the system connection
Hopping motor drive Check the connection condition of the cable.
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.
Hopping motor drive Check that any cable is not pinched during
cable 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
Hopping motor Remove the MOTERCL connector of the CU/
PU board and check that approx. 3.4Ω can be
measured between pin-5 -pin-6 and pin-7 -pin-8
respectively at the cable end.
45850101TH Rev.1
Actions to be taken
Check work
at NG
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Replace the
cable with the
good cable
that normalizes
the connection
condition.
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.
2. TROUBLESHOOTING PROCEDURES
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