Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL
43967002TH Rev. 1
332 /
7. Troubleshooting
7.5.2.(6) Paper running jam (error code 381:
(6-1) Jam occurs immediately after the power is turned on.
Check item Check work
Action to be taken at NG
(6-1-1) Check the condition of the paper running path
Paper running path
of the front unit
Check if paper is jammed or not in the
paper running path.
Remove the
jammed paper.
(6-1-2) 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.
(6-1-3) 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 either the
PU PCB or the front
sensor PCB (RSF
PCB) or connection
cable.
Check the sensor
lever of the WR
sensor.
Check for the following signals at the FSNS
connector
of the PU PCB.
pin2: WR sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the front
sensor PCB (RSF
PCB)
Check the power
voltages supplied
to the front sensor
PCB (RSF PCB)
Check the 5V power at the FSNS connector
of the front sensor PCB (RSF PCB).
pin1: 5V power
pin5: 0VL
Replace the
connection cable.
(6-2) Jam occurs immediately after a paper is taken into printer.
Check item Check work
Action to be taken at NG
(6-2-1) Check the condition of the paper running path
Paper running path
on the belt.
Remove the ID unit and check if paper is
jammed or not in the paper running path.
Remove the
jammed paper.
Check item Check work
Action to be taken at NG
(6-2-2) Check condition of the mechanical parts
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.
(6-2-3) Motor operation chec
k
Paper feed motor,
belt motor, ID motor
Confirm that the paper feed motor, belt
motor and ID motor work normally by
using the Motor & Clutch Test of the self-
diagnostic mode.
Check if any extra load exists or not.
Replace the PU
PCB, or replace
the defective motor
among paper feed
motor, belt motor and
ID motor, or replace
the ID unit or belt unit.
Replace the paper
feed motor, belt motor,
ID motor. Replace ID
unit, belt unit If any
attempt of using new
ID unit or new belt
unit as a trial is going
to be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
Paper feed motor
driver, ID up motor
driver, belt motor
driver
Remove the HOPSIZE connector of the
PU PCB and check the followings at the
connector side.
Several M
Ω
between pin1 – FG.
Several M
Ω
between pin2 – FG.
Several M
Ω
between pin3 – FG.
Several M
Ω
between pin4 – FG.
Remove the HOPSIZE connector
of the
PU PCB and check the followings at the
cable side.
Several M
Ω
between pin1 – FG.
Several M
Ω
between pin2 – FG.
Several M
Ω
between pin3 – FG.
Several M
Ω
between pin4 – FG.
Replace the PU
PCB, or replace
the defective motor
among paper feed
motor, belt motor
and ID motor, or
replace the ID unit
or belt unit.

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