Oki MB491 User Manual

Other Issues
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z Other Issues
This section explains the issues you may encounter while operating your machine and how to solve them.
Unable to Print from a Computer
Memo
z If the following information does not solve the trouble, contact your dealer.
z For troubles caused by an application, contact the manufacturer of the application.
General Causes
 Common to Windows and Mac OS X
 For Windows
Cause Remedy Reference
The machine is in sleep mode. Press the <POWER SAVE> key on the operator panel to
enter the standby mode.
If the sleep mode is not used, disable it from the <SET-
TING> key > [Admin Setup] > [User Install] >
[Power Save] > [Sleep].
P. 2 0
The machine is turned off. Hold down the power switch for about a second to turn
on the power.
P. 2 0
An Ethernet or USB cable is unplugged. Check that the cable is plugged into the machine and
computer properly.
-
Something is wrong with a cable. Replace it with a new cable. -
The machine is off line. Press the <PRINT> key on the operator panel, and then
select [On-Line].
-
An error message is displayed on the
display screen of the operator panel.
"Error Messages Displayed on the Screen" on P. 132 or
press the <?HELP> key on the operator panel.
P. 1 3 2
The interface setting is disabled. Check the setting of the interface being used from the
operator panel.
Advanced
Something is wrong with the print
function.
Check if you can perform configuration print. P. 7 2
Cause Remedy Reference
The machine is not set as the default printer. Set the machine as the default printer. -
The output port for the printer driver is
incorrect.
Select the output port to which the Ethernet or USB
cable is connected.
-
A print job from another interface is in
progress.
Wait until the print job is done. -
[Received invalid data] is displayed on
the display screen and printing cannot be
done.
Press the <SETTING> key and select [Admin Setup] >
[Print Setup] > [Print menu] > [Printer Adjust] >
[Wait Timeout], and then select a longer time. The
default setting is 40 seconds.
-
A print job is automatically canceled. If using Print Job Control, the print job is not authorized
to print, or the Job Accounting log buffer may be full.
Advanced

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