3-32 Printer Operation
Service Mode
Service Mode should be used only by authorized service personnel.
While in Service Mode, you can:
●
Verify and set the page count and serial number. These are
displayed on the Configuration Page.
●
Set the Cold Reset Default. (This sets the factory default paper
size to either Letter or A4).
●
Turn the diagnostic functions on or off (for software developers
only).
●
Clear the Event Log.
●
Set the interval at which the
PERFORM PRINTER MAINTENANCE
message appears on the Control Panel.
To enter Service Mode:
1 Hold down [Select] and [Cancel Job] while turning on the printer
until all of the lights on the Control Panel are lit. (If the Control
Panel reads
INITIALIZING
, the keys were released too soon.)
2 Press the right side of the [Menu] key, then press [Select]. The
message
SERVICE MODE
is displayed. To exit the Service Mode
press [Go].
For more information on the LaserJet 4000 / 4050 Visit www.PrinterSupplies.com 800-551-1943
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