Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL
43967002TH Rev. 1
351 /
7. Troubleshooting
7.5.3.(5) Cyclic abnormal print (Refer to Fig. 7-2 E)
(5-1) Cyclic abnormal print in vertical direction.
Check item Check work
Action to be taken at NG
(5-1-1) Cycle
Image drum Check if the cycle is 94. 3mm. Replace the ID unit.
Developer roller Check if the cycle is 39. 7mm. Replace the ID unit.
Toner feed roller Check if the cycle is 58. 4mm. Replace the ID unit.
Charge roller Check if the cycle is 37. 7mm. Replace the ID unit.
Fuser unit upper
roller
Check if the cycle is 87. 7mm. Replace the fuser
unit.
Fuser unit belt Check if the cycle is 125. 5mm. Replace the fuser
unit.
Transfer roller Check if the cycle is 50. 3mm. Replace the belt
unit.
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.
7.5.3.(6) Color registration error is heavy
(6-1) Message “Color adjustment in progress” at power on is display short time
Check item Check work
Action to be taken at NG
(6-1-1) Color registration error correction result
Color registration
error correction time
(Approx 40 seconds
if normal)
Execute REG. ADJ. UST. TEST with
the self-diagnostic mode and check the
result. If the MFP is ON. LINE, error is not
displayed even if error is issued inside.
Replace the sensor
causing NG. Clean
the sensor.
Replace shutter.
Replace PU PCB.
(6-1-2) Toner
Residual amount of
toner
Confir
m that the message “Please Install
Toner“ or “Toner Enpty” is not displayed on
the Operator Panel screen.
Replace the toner
cartridge with new
one.
(6-1-3) Color registration error sensor
Sensor is dir
ty. Are toner and paper dust attracted to
paper?
Wipe off stain.
(6-1-4) Color registration error sensor shutter
Shutter oper
ation is
defective.
Check the shutter operation by the self-
diagnostic function.
Replace shutter or
repair mechanism.
(6-2) Color registration error even though the Engine Maintenance Function “REG.
ADJUST TEST” shows OK
Check item Check work
Action to be taken at NG
(6-2-1) Paper feed system
Paper feeding
condition of the
paper running path.
Check if there is any foreign material that
prevents smooth paper running during the
course of paper running path.
Remove obstacle.

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