Oki MC860 MFP, Руководство по обслуживанию

Страница: 328 / 391

Oki Data CONFIDENTIAL
43967002TH Rev. 1
328 /
7. Troubleshooting
Check item Check work Action to be taken at NG
(3-2-4) Check the system connection
Paper feed motor
drive cable Check the connection condition of the
cables.
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. Normalize the
connection
condition.
Replace the cable
with the normal
cable.
Paper feed motor
drive cable Check that any cable is not pinched during
assembling of the printer.
Remove the HOPSIZE connector no. 1 of
the PU PCB and check the followings at
the cable side.
Short circuit between pin1 – FG
Short circuit between pin1 – FG
Short circuit between pin3 – FG
Short circuit between pin4 – FG
Replace the cable
with the good one
that normalizes
the connection
condition.
Paper feed motor Remove the HOPSIZE connector of the
PU PCB and check that approx. 3.4 ohms
can be measured between pin1 -pin-2 at
the cable end, and that approx. 5 ohms
can be measured between pin3 -pin-4
respectively. Replace the paper
feed motor.
(3-2-5) Solenoid operation check
Paper feed solenoid Confirm that the paper feed solenoid works
normally by using the Motor & Clutch Test
of the self-diagnostic mode.
Remove the metal plate from the right side
of a printer so that the solenoid becomes
visible. Then, check operation of the
solenoid. Replace the PU
PCB or paper feed
motor.
Paper feed solenoid Check that any obstacle does not exist that
hampers smooth operation of the movable
portion of the solenoid. (Obstacles such as
cable and others) Normalize the
assembled condition
of a printer.
Check item Check work Action to be taken at NG
(3-2-6) Check the system connection
Paper feed solenoid Check the connection condition of the
cables.
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. Normalize the
connection
condition.
Replace the cable
with the normal
cable.
Paper feed solenoid
cable Check that any cable is not pinched during
assembling of the printer.
Remove the HSOL connector no. 14 of the
PU PCB and check the followings at the
cable side.
Short circuit between pin1 – FG
Remove the HSOL connector no. 14 of the
PU PCB and check that approx. 89 ohms
can be measured between pin1 and pin-2. Replace the
solenoid assembly
and re-assemble
the printer correctly.