If the display panel on your HP LaserJet reads "perform
printer maintenance", "perform user maintenance",
or anything along those lines it means your printer needs a preventative
maintenance kit. Once you have installed the maintenance kit the
message will only go away if you reset the maintenance count.
Reset the maintenance count on an HP LaserJet 4000, 4050,
4100, 5000
"The Short Cut Method"
1. Turn the printer off.
2. Hold down the [Item-] and [Value-] keys.
3. Turn the printer on.
4. Wait for RESET MAINTENANCE COUNT to be displayed and then release
both keys.
NOTE: Some versions of the 4000, 4050, 4100, and 5000 will NOT have
their maintenance count reset by following the preceding "short
cut" method. This is due to the many different formatter board
revisions. If the short cut method doesn't reset the maintenance
count then you will need to go into
service mode to manually reset the maintenance count to zero.
Once the maintenance count has been reset the "perform printer
maintenance" message won't appear again until the maintenance
interval has been reached (200,000 pages on a LaserJet 4100, 4050,
4000, and 5000 series printers).
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