Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL
43967002TH Rev. 1
319 /
7. Troubleshooting
(2-2) Abnormal sound is heard
Check item Check work
Action to be taken at NG
(2-2-1) Check loss of synchronization of motor (Driver error)
Operating
conditions of the
respective motors
Check if operations of the respective
motors are normal or not by using the self-
diagnostic mode.
Check if any extra load exists or not.
“Buzz buzz” sound is generated when an
error occurs.
PU PCB
replacement
Condition of the
motor cable
Check for normal wiring conditions of the
respective motors.
Perform the visual check and measure
resistance at open circuit with VOM as follows.
Remove the motor cable at the PCB end.
Measure resistance between the respective
pins of the removed cable and FG with VOM.
Replace the motor
cables.
Re-connect the
cable for normal
conditions.
(2-2-2) Check loss of synchronization of motor (Abnor
mal load of the consumable item)
Operating
conditions of the
respective motors
Check if operations of the respective
motors are normal or not by using the self-
diagnostic mode.
Check if any extra load exists or not.
“Buzz buzz” sound is generated when an
error occurs.
Replacement of the
various consumable
items. If any attempt
of using new part
as a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
Check item Check work
Action to be taken at NG
(2-2-3) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating
conditions of the
respective motors
Check if operations of the respective
motors are normal or not by using the self-
diagnostic mode.
Check if any extra load exists or not.
“Buzz buzz” sound is generated when an
error occurs.
Replacement of the
various consumable
items.
If any attempt of
using new part as
a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
Installation condition
of each consumable
item
Check by visual inspection if the respective
consumable items are installed in their
normal positions in which gears of the
consumable items engage accurately or not.
Replace an
appropriate
mechanical part as
required, or adjust
or repair.
(2-2-4) Check the wiring conditions of cables
Wiring conditions
of the cables in
the vicinity of the
respective cooling
fans
Check if the cable contacts with the fan
blade because wiring conditions of the
cables near fan is poor or not.
“Clap, clap” sound is generated when an
error occurs.
Correct the wiring
conditions of the
cable.
(2-2-5) Check installation condition of mechanical par
ts
Check the installation
conditions of the
partition plate under
the CU and PU
PCBs.
Remove the CU and PU PCB, and inspect
the installation conditions of the partition
plate by visual inspection.
If they are not
hooked on the
normal specified
positions, correct
them.

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