Machine Issues - Oki B721 User Manual

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Machine Issues

Memo
● If the following information does not solve the issue, contact your dealer.
Symptom
You turned on the
printer, but nothing
displays on the screen.
The printer does not
operate.
The LED indicator in the
power switch is blinking
at high speed per about
0.3 seconds.
The printer does not
start printing.
The display screen is
blank.
Print data is not
transmitted to the
printer.
Cause
The AC cable is unplugged.
The power is out.
The AC cable is not firmly plugged
in.
The printer is turned off.
The printer shuts itself off
automatically by the auto power
off function.
Printer does not respond.
The printer may be malfunctioning.
An error is displayed on the panel. Check the error code and follow
The cable used for the interface
connection is unplugged.
Something is wrong with the cable
used for the interface connection.
The printer does not support
the cable used for the interface
connection.
Something may be wrong with the
printing function.
The interface is disabled.
The printer driver of the printer is
not selected.
The output port for the printer
driver is incorrect.
The printer is in the sleep mode.
The cable used for the interface
connection is broken.
The time-out period set on the
computer has passed.
Remedy
Turn off the printer and then plug
in the AC cable firmly.
Check if the power is being
supplied to the electric outlet.
Plug in the AC cable firmly.
Turn on the printer.
Disable the auto power off
function.
Hold down the power switch for
more than 5 seconds to turn off
the printer forcibly.
Unplug the AC cable
immediately.
the on-screen instructions.
Plug in the cable used for the
interface connection firmly.
Use different cables.
Use a USB 2.0 compatible cable.
Use an Ethernet 10BASE-T
/100BASE-TX compatible cable.
Press the
button, select
[Print Information] then
[Configuration] ,and then print
the contents of the settings to
check the printing function.
Press the
button, select
[Admin Setup] then [Network
Setup], and enable the interface
you are using.
Set the printer driver of the
printer to be used as the default
printer.
Specify the port the Ethernet or
USB cable is connected to.
Check that the <POWER SAVE>
button is blinking and press the
<POWER SAVE> button to
activate the printer.
Connect a new cable.
Set a longer time-out period.
- 119 -
Machine Issues
Reference
Page
page 29
4
page 48
page 104
page 57
page 43
page 29

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