Oki MC860 Maintenance Manual

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 chec
k
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.

Oki MC860 Specifications

Printing Specifications

print speed color	26 ppm
print speed black & white	33 ppm
time to first page color	10 seconds
time to first page black & white	9.5 seconds
print resolution	1200 x 600 dpi
processor	500 MHz PowerPC CPU
duty cycle	75, 000 prints per month

Copying Specifications

copy speed color	26 cpm
copy speed black & white	33 cpm
first copy out color	14.5 seconds
first copy out black & white	13 seconds
copy resolution	600 x 600 dpi

Scanning Specifications

scan type	Color and black & white
max scan area	11" x 17"
scan speed black & white	33 spm
scan speed color	26 spm
scan resolution	600 dpi

Fax Specifications

fax modem	33.6 Kbps Super G3
transmission speed	2 seconds/page
fax resolution	600 x 600 dpi
speed dial locations	500 locations
broadcast transmission locations	530 locations

Power and Acoustic Noise

power consumption peak	1, 300W
power consumption standby	160W Avg.
power save mode	≤25W
acoustic noise operating	54dB
acoustic noise standby	≤37dB

System Memory

standard imaging RAM	512 MB
max imaging RAM	768 MB
hard disk drive	40 GB

Weight and Dimensions

1-tray configuration dimensions	22.2" x 25.9" x 26.3"
2-tray configuration dimensions	33.3" x 30.2" x 44.5"
weight 1-tray configuration	149.9 lb
weight 2-tray configuration	200.6 lb
weight 3-tray configuration	211.6 lb