Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL
43967002TH Rev. 1
334 /
7. Troubleshooting
(6-4) Jam occurs immediately after paper has reached the fuser.
Check item Check work
Action to be taken at NG
(6-4-1) Motor operation check
Fuser motor Confirm that the fuser motor works
normally by using the Motor & Clutch Test
of the self-diagnostic mode.
Check if any extra load exists or not.
PU PCB replacement
Replace the fuser
motor.
Replace the
fuser unit. If any
attempt of using
new fuser unit as
a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
(6-4-2) Temper
ature control of the roller rotation speed
Heat roller detected
temperature
Check the detected temperature of the heat
roller using the self-diagnostic mode. Is
abnormally high temperature or abnormally
temperature detected?
Replace fuser
unit, or relay PCB
(PRY PCB) or the
PU PCB. If any
attempt of using
new fuser unit as
a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
(6-4-3)
Check the installation condition of fuser unit
Fuser unit Chec
k that the fuser unit is installed
normally. (Is it pushed in down to the
bottom-most point?)
Install the fuser unit
correctly in a printer.
7.5.2.(7) Paper running jam (error code 382)
(7-1) Jam occurs immediately after the power is turned on.
Check item Check work
Action to be taken at NG
(7-1-1) Check the condition of the paper running path
Paper running path
of the multipurpose
tray
Check if paper is jammed or not in the
paper running path.
Remove the
jammed paper.
(7-1-2) Check condition of the mechanical par
ts
Check the sensor
lever of the WR
sensor.
Check if shape and movement of the
sensor levers have any abnormality or not.
Replace the sensor
lever with the good
sensor lever.
(7-1-3) Check condition of electr
ical parts
Check the detection
condition of the
sensor signal.
Confirm that the sensor signals are
normally detected by using the SWITCH
SCAN function of the self-diagnostic mode.
Replace the PU
PCB or EXIT sensor
or its cable or its
connection cable.
Check the output
signal level of the
EXIT sensor.
Check for the following signals at the
RELAY connector
of the PU PCB.
Pin9: EXIT sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the EXIT
sensor.
Check the output
level of Fuser IN.
Check for the following signals at the
RELAY connector
of the PU PCB.
pin20: Fuser-IN sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the Fuser-
IN sensor
Check the power
voltages supplied to
the relay PCB.
Check the 5V power voltage at the EXIT
connector
of the relay PCB (P6Y. PCB).
pin1: 5V power
3pin, 6pin: 0VL
Replace the
connection cable.

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