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7. Troubleshooting

This chapter provides solutions to the problems you may encounter while operating your machine.

z Paper Jams

This section explains how to clear paper jams.

Reference

z For details on the location of each component of the machine, refer to "Cleaning Your Machine" on P. 165.

z For details on the location of each component of the machine, refer to "Names of Components" on P. 15.

Checking Error Messages

When a paper jam occurs, the [Paper jam] or

[Document jam] message appears on the

display screen and the <STATUS> key on the

operator panel blinks. The error code and

description differ according to where the paper

jam occurs.

Check the error code that appears from the list

below and refer to the relevant procedure to

clear paper jams.

Clearing Paper Jams

Note

z The image drum (the green tube) is very delicate. Handle

it carefully.

z Do not expose the image drum to direct sunlight or very

bright interior light (approximately more than 1500 lux).

Even under the normal interior light, do not leave it for

more than 5 minutes.

Error Code 370, 371, 372 (Duplex

paper jam)

1 Remove any documents from the

document tray if any.

2 Open the scanner unit.

3 Press the top cover open button(1) and

open the top cover.

Error

code

Message

Reference

page

370 Paper Jam Occurs: 3##

Please open the scanner unit and

the top cover And, please check.

Please see Help for details.

P. 1 2 6

371 P. 1 2 6

372 P. 1 2 6

380 P. 1 2 8

381 P. 1 2 8

382 P. 1 2 8

389 P. 1 2 8

390 P. 1 2 9

391 Paper Jam Occurs: 3##

Please pull out the paper cassette of

the indicated tray. And, please check.

Please see Help for details.

P. 1 3 0

392 P. 1 3 0

Document Jam Occurs.

Please open the scanner unit and

the ADF cover.

And, please check.

Please see Help for details.

P. 1 3 1

Possible to get burned.

z Since the fuser unit right is extremely hot,

perform the operation with care.

CAUTION

Questions and Answers:

Need help?

Do you have a question about the Oki MB491 and is the answer not in the manual?

Oki MB491 Specifications

General

Duplex printing	No
Print technology	Laser
Time to first page (black, normal)	5 s
Print speed (black, normal quality, A4/US Letter)	40 ppm
Network ready	Yes
Power supply type	AC
Dimensions (WxDxH)	427 x 425 x 455 mm
Networking features	Fast Ethernet
All-in-one functions	Copy, Fax, Print, Scan
Connectivity technology	Wired
Printing colors	Black
Maximum duty cycle	80000 pages per month
Number of print cartridges	1
Page description languages	PCL 5e, PCL 6, PostScript 3
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
Time to first copy (black, normal)	10 s
Scanner type	Flatbed scanner
Maximum scan area	- mm
Faxing	Mono faxing
Fax memory	4 MB
Modem speed	33.6 Kbit/s
Total input capacity	250 sheets
Total output capacity	100 sheets
Envelopes sizes	C5, C6, DL
Maximum print size	210 x 297 mm
Paper tray media types	Plain paper
ISO A-series sizes (A0...A9)	A4, A5, A6
JIS B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Display	LCD
Display resolution	320 x 128 pixels
Market positioning	Business
Direct printing	-
Standard interfaces	Ethernet, USB 2.0
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (average operating)	950 W
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	20 - 80 %
Sustainability certificates	ENERGY STAR