Remove the printer from the 500 sheet lower cassette, this will
make installation much easier. Remove the tray from the cassette
and flip the cassette on its side. Remove the feed roller circled
below by pinching the tab at the center of the roller and pulling
it off the shaft. Replace it with a new roller.

Now replace the pickup rollers. Remove them by pressing
on the locking tab circled below, rotate the shaft, and pull the
roller straight off. Install the new rollers.

The separation rollers is replaced by opening the
hinged door and pulling the roller off of the shaft.

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 do 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.
|