User Guide

Power-on bypass
When the power is turned on the printer begins the power-on sequence. By performing a power-on
bypass, you can cause the printer to resume the power-on sequence but not to recognize any
installed EIO hard disk (skip-disk load procedure). This can be helpful in isolating EIO hard-disk
errors.
When using the HP LaserJet 4200 and 4300 Series printers you can also resume the power-on
sequence but make the printer continuously print configuration pages until the P
AUSE /R ESUME button
is pressed (self-test procedure). This can be helpful if you need to verify the printer components that
are installed by reviewing the information on the configuration page, but you cannot open the menus
to print a configuration page.
Skip disk-load
1 Turn the printer power off.
2
For HP Laserjet 4200/4300 Series printers: Hold down
( S ELECT button), and then turn the
printer power on.
For HP Laserjet 4250/4350 Series printers: Turn the printer power on, and then hold down
(S ELECT button) when the memory count begins.
3
Continue holding down
until all three printer control-panel lights flash once and then remain
on. This might take up to 10 seconds.
4
Press
(U P A RROW button) followed by the P AUSE /R ESUME button.
5
Press
or until SKIP DISK LOAD is highlighted.
6
Press
. The printer continues the power-on sequence but ignores an installed EIO hard disk.
Self-test
1 Turn the printer power off.
2
For HP Laserjet 4200/4300 Series printers: Hold down
( S ELECT button), and then turn the
printer power on.
For HP Laserjet 4250/4350 Series printers: Turn the printer power on, and then hold down
(S ELECT button) when the memory count begins.
3
Continue holding down
until all three printer control-panel lights flash once and then remain
on. This might take up to 10 seconds.
4
Press
(U P A RROW button) or (D OWN A RROW button) until SELF TEST is highlighted.
5
Press
. The printer continues the power-on sequence and begins to continuously printing
configuration pages.
6 Press the P
AUSE /R ESUME button (LJ 4200/4300) or the M ENU button (LJ 4250/4350) to exit the self-
test.
328 7 Troubleshooting