Oki MC561 User Manual

44473001TH Rev.1
237 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING PROCEDURES
Check item Check operation
Actions for NG
results
(8-2-3) Check condition of the paper running path
Paper inverting
tr
ansport path
Check that any foreign materials such as paper
chip or blue do not exist that hampers the
smooth movement of paper in the paper inverting
transport path.
Remove
the foreign
material.
(8-2-4) Motor operation check
Duplex pull-in/
reversing roller and
its pinch roller
Check if the pull-in/reversing roller of the Duplex
unit contacts or not with the pinch roller of the
cover side when the Duplex rear cover is closed.
(Does the pinch roller rotate when the roller is
rotating?)
Replace the
rear cover.
(8-3) Two-sided printing jam occurs in the process of reversing paper.
Check item Check operation
Actions for NG
results
(8-3-1) Sensor lever operation check
DUP-R sensor lever Open the rear cover. Touch the Dup-IN sensor
lever to check if its movement is unsmooth or not.
Replace the
DUP-R sensor
lever
DUP-R sensor Confirm that the sensor signals are normally
detected by using the SWITCH SCAN function of
the self-diagnostic mode.
Replace the
CU/PU board,
the sensor or
its connection
cord.
(8-3-2) Motor operation check
Fuser motor Visually check whether paper started being
reversed.
When no paper reversing operation has
performed, check whether the planet gear at the
lower right side of the fuser moves smoothly.
R
e
place the
planetary gear.
(8-4) Two-sided printing jam occurs during transporting paper inside the Duplex unit.
Check item Check operation
Actions for NG
results
(8-4-1) Sensor lever operation check
Dup-R, Dup-F
se
nsor lever
Open the top cover, remove the image drums
and the belt unit and check the operation of the
DUP-F sensor lever.
Replace the
sensor lever.
(8-4-2) Sensor check
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.
Check sensor detection with paper in the duplex
unit, and with it removed from the duplex unit.
Replace the
CU/PU board,
appropriate
sensor(s) or
connection
cord(s).
(8-5) Paper is not supplied from the Duplex unit to the regist roller.
Check item Check operation
Actions for NG
results
(8-5-1) Clutch operation check
Duplex clutch Confirm that the Duplex clutch works normally
by using the Motor & Clutch Test of the self-
diagnostic mode.Confirm it by listening to the
sound.
Replace the
CU/PU board
or the clutch.

Oki MC561 Specifications

Printing Specifications

Print Speed	Up to 27 ppm color, 31 ppm black & white
Time to First Page	As fast as 8 seconds in color, 7.5 seconds in black & white
Print Resolution	Up to 1200 x 600 dpi

Copying Specifications

Copy Speed	Up to 27 cpm color, 31 cpm black & white
First Copy Out	As fast as 14 seconds in color, 12 seconds in black & white
Copy Resolution	Up to 600 x 600 dpi

Scanning Specifications

Scan Type	Color and black & white flatbed
Scan Resolution	Up to 1200 x 1200 dpi
Scan Speed	Approx. 3 sec./page color, approx 2 sec./page black & white at 300 dpi

Fax Specifications

Fax Modem	33.6 Kbps Super G3
Transmission Speed	3 seconds/page
Fax Resolution	Up to 200 x 400 dpi

System Memory

Standard Imaging RAM	256 MB
Max Imaging RAM	768 MB
SD Card Storage	4 GB standard; 16 GB optional

Paper Handling

Scanner RADF Capacity	Up to 50 letter/legal sheets
Standard Input	350 sheets (250 sheets via Main Tray + 100 sheets via MPT)
Maximum Input	880 sheets (with optional 530-sheet 2nd Paper Tray)

Environmental Specifications

Size	16.8" x 20" x 17.5" (42.7 cm x 50.9 cm x 44.4 cm)
Weight	63 lb. (29 kg)
Power Consumption	Operating Normal 570W; Max 1170W; Idle 100W; Power Save 20W; Deep Sleep <1.5W