Switch off the printer, the scanner, and the PC, and then disconnect them from
the power source prior to performing any maintenance.
HP Designjet T1100 MFP, 4500mfp, 4500 Scanner, 820 MFP Service Manual
1. To install the Exit Roller, follow steps 1-31
from the Exit Roller removal procedure in
When you are ready to reattach
the piston spring, be sure to follow
steps 10 and 11 from the removal
process in reverse order, as high-
Step 3 (below) guides you in the
handling of the piston spring as
you affix the screws.
2. First, use the screw to attach the uppermost
part of the piston spring.
3. Then use a second screwdriver (or similar
implement) to act as a lever, and pry the
piston spring upward. You will then be
able to affix the screws as shown in the
photo and described in step 10 of the
Removal and Installation