3 printing problems, 1 indicators are on, flashing, or off, Indicators are on, flashing, or off – Brother HL-4000CN User Manual
Page 111
6-3
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Symptom Possible
Cause
Action
The Alarm lamp is on
Is there an error message on the
control panel display?
Check the message and rectify the
error accordingly.
See 6.7 “What to Do When an Error
Message Appears”
The Alarm lamp is
flashing
A problem that the user cannot rectify
has occurred.
Note the error code on the display,
turn off the printer immediately,
disconnect the power cord from the
outlet, and contact your dealer or
Brother authorized service
representative.
The Print Ready lamp is
off
Is the control panel display on the
menu screen?
Press the Menu button on the control
panel to go back to the print screen.
See 5.1.3 “Buttons”
Is the parallel, USB, or Ethernet
interface cable loose or
disconnected?
Turn off the printer and check the
interface cable. If necessary,
reconnect.
Is the network expansion card loose? Turn off the printer and reinstall the
network expansion card into the
printer.
Does the parallel, USB, or Ethernet
interface cable meet the required
printer specifications?
Use only the recommended parallel
or USB interface cables for the
printer.
10Base-T and 100Base-TX Ethernet
interface cables are compatible with
the printer. Use twisted pair cables
suitable for network connections. A
Category 5 100Base-TX is required.
Is the computer configured correctly?
Check the following settings on your
computer and reconfigure any that
are not correct.
• Make sure that the appropriate
printer driver for your operating
system is installed.
• Make sure that the port is set
correctly in the printer driver.
The Print Ready lamp is
not on or flashing after
executing the print
command
Is the printer IP address correct?
(When using TCP/IP.)
Consult your system administrator to
obtain a valid IP address. Use the
printer configuration list to confirm the
IP address.
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