HP LaserJet 4v/mv Service Manual - Page 49

Service Mode - windows 10

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Operating 3 Overview Service Mode The Service Mode should be used only by authorized service personnel. While in Service Mode, you can: • Print a Service Mode Self Test. • Verify and set the Page Count and serial number. These are displayed on the standard self test. • Set the Cold Reset Default. (This sets the factory default paper size to either Letter or A4). • Set the Demo Page=True/False. Used to remove the Demo Page option from the self test menu. • Set the Diagnostic Functions ON or OFF (for software developers use only). The following procedure is used to initiate the Service Mode (refer to Figure 3-2). 1 Hold down the [On Line], [Form Feed], and [Enter] keys while powering ON the printer, until all lights are illuminated and the Display Window is blank. (If the Display Window reads 05 SELF TEST at this point, the keys were released too soon. Repeat this step until successful.) 2 Press the [Form Feed] key, then the [Enter] key. The message SERVICE MODE is displayed briefly, then the printer automatically begins a 05 SELF TEST. After several seconds, both Control Panel Indicators turn OFF. (The printer may display 02 WARMING UP if it has not warmed up completely.) After the printer has warmed up and passed the self test, SERVICE MODE is displayed. To exit the Service Mode press the [On Line] key. Power Save An additional 10 second time interval is added to the Power Save function in Service Mode. With Service Mode displayed, press MENU until Job Menu is displayed. 1 Press [Item] until PWRSAVE= is displayed. 2 Press [+/-] until the desired time interval is displayed. 3 Press [Enter] to save your selection. 4 Press [On Line] once to return to the Service Mode. Press [On Line] again to place the printer back on-line. Operating Overview 3-15

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Service Mode
The Service Mode should be used only by authorized service personnel.
While in Service Mode, you can:
•
Print a Service Mode Self Test.
•
Verify and set the Page Count and serial number.
These are displayed on
the standard self test.
•
Set the Cold Reset Default. (This sets the factory default paper size to either
Letter or A4).
•
Set the Demo Page=True/False. Used to remove the Demo Page option from
the self test menu.
•
Set the Diagnostic Functions ON or OFF (for software developers use only).
The following procedure is used to initiate the Service Mode (refer to Figure
3-2).
1
Hold down the
[On°Line]
,
[Form°Feed]
, and
[Enter]
keys while powering ON
the printer, until all lights are illuminated and the Display Window is
blank. (If the Display Window reads
05 SELF TEST
at this point, the keys
were released too soon. Repeat this step until successful.)
2
Press the
[Form°Feed]
key, then the
[Enter]
key.
The message
SERVICE MODE
is displayed briefly, then the printer automatically begins a
05 SELF TEST
.
After several seconds, both Control Panel Indicators turn OFF. (The printer
may display
02 WARMING UP
if it has not warmed up completely.) After the
printer has warmed up and passed the self test,
SERVICE MODE
is displayed.
To exit the Service Mode press the
[On°Line]
key.
Power Save
An additional 10 second time interval is added to the Power Save function
in Service Mode.
With Service Mode displayed, press MENU until Job Menu is displayed.
1
Press
[Item]
until
PWRSAVE
=
is displayed.
2
Press
[+/-]
until the desired time interval is displayed.
3
Press
[Enter]
to save your selection.
4
Press
[On°Line]
once to return to the Service Mode.
Press
[On°Line]
again to
place the printer back on-line.
3
Operating
Overview
Operating Overview
3-15