HP LaserJet Quick Reference Service Manual: Accessing Service Mode

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Accessing Service Mode

Use the following procedures to access service mode.
Note
There is no service mode or NVRAM on LaserJet 6L, 5L, 6P, 5P, or
4L printers. The page counts are retained only while the printer is
plugged in; the page count is lost when the printer is unplugged.
Note
Use PJL commands in the software to access service mode in LJ5P
and LJ 4 ML printers. See the service manual for more information.
LJ5Si Mopier, LJ5 Si
1 Turn the printer off.
[Items]
2 Press
3 Press [Select]. After a few seconds the printer should display
Service Mode
LJ5
1 Turn the printer off.
[Menu +]
2 Press
on.
After a few seconds the printer should display
LJ 4V, 4P, 4Plus, 4, 4Si
1 Turn the printer off.
[On
Line],
2 Press
turning the printer on.
[Form
Feed], and then press [Enter].
3 Press
After a few seconds the printer should display
EN
[+]
and
simultaneously while turning the printer on.
.
[Value+]
and
simultaneously while turning the printer
[Form
Feed], and
Service Mode
[Enter]
simultaneously while
Service Mode
Accessing Service Mode – 75
2
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.

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