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HP LaserJet Series Printers Maintenance Kit Installation

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					HP LaserJet 2100 Series Printers - Maintenance Kit

Installation (US Only)                       bpl90282 2100 Maint kit _and TEA RDO WN.url


In this document:
          Introduction
          Parts required
          Instructions
          Removal and replacement instructions
             Remove transfer roller
             Remove the I/O cover and the EIO card
             Remove the DIMMs
             Remove Tray 2 pickup roller
             Remove the rear cover.
             Remove the fusing assembly
             Remove the Tray 1 pickup roller assembly
             Remove the Tray 1 separation pad
             Remove Tray 2 separation pad


Knowledgebase Document Number bpl90282

Last Updated: 02-April-2003

Minimum Skill Level 2

Introduction
The HP LaserJet Maintenance Kit provides the parts most commonly used to repair the paper path wear
components of the HP LaserJet 2100 series printers. Using the HP LaserJet Printer Maintenance kit helps
provide convenience and cost savings by eliminating the need for individual subcomponent ordering where
multiple parts needs exist.

       CAUTION: This kit is not for use by end users. It is intended for HP Authorized Service Providers or
       Help Desks in non-warranty applications in the US Only.

Parts required

           Part description                    HP LaserJet 2100 part number
Maintenance Kits 110V only                 H3974-60001
Maintenance Kit 220V only *                H3974-60002
Fuser 110V (New)                           RG5-4132-170CN
            Part description                        HP LaserJet 2100 part number
Fuser 220V (New) *                             RG5-4133-170CN
Transfer Roller                                RG5-4164-000CN
Pickup Roller (MP/Tray 1)                      RB2-2900-000CN
Pickup Roller (Cassette/Tray 2)                RB2-2891-000CN
Separation Pad (MP Tray 1)                     RB2-6348-000CN
Separation Pad (MP Tray 2)                     RB9-0695-020CN
*These components may not be included depending on the voltage
requirements.


Instructions
   1.    Open the top cover and remove the print cartridge.
   2.    Remove paper Tray 2 from the unit.
   3.    Remove the transfer roller .
   4.    Remove the I/O cover and the EIO card .
   5.    Remove the DIMMs .
   6.    Remove and replace the Tray 2 pickup roller .
   7.    Remove the rear cover .
   8.    Remove the fusing assembly .
   9.    Remove the Tray 1 pickup roller assembly to replace the Tray 1 pickup roller .
             a. Remove the top cover .
             b. Remove the left cover .
             c. Remove Tray 1 .
             d. Remove the formatter PCB .
             e. Remove the printer drive assembly .
   10.   Remove and replace the Tray 1 separation pad .
   11.   Remove and replace the Tray 2 separation pad .
   12.   Reinstall the Tray 1 pickup roller assembly.
             a. Reinstall the printer drive assembly.
             b. Reinstall the formatter PCB.
             c. Reinstall Tray 1.
             d. Reinstall the left cover.
             e. Reinstall the top cover.
   13.   Install the new fusing assembly.
   14.   Reinstall the rear cover.
   15.   Reinstall the DIMMs, EIO Card, and I/O cover.
   16.   Install the new transfer roller.
   17.   Reinstall paper Tray 2 into the unit.
   18.   Reinstall the print cartridge, reconnect the power, and print a test page to verify printer function.

Removal and replacement instructions

         Remove transfer roller

                 CAUTION: Do not touch the new transfer roller’s sponge with bare skin because oils
                 can damage the roller. Instead, grasp the transfer roller’s bushing and shaft.
         Open the print cartridge door and
remove the print cartridge.
                                       Figure 1: Transfer roller




Locate the transfer roller’s black
bushing, which is on the left end
of the transfer roller’s shaft and
just behind the gear.




                                       1 - Bushing

                                       2 - Shaft
                                       Figure 2: Black bushing tabs




Squeeze both of the black
bushing’s tabs and then lift the
transfer roller’s shaft to the left.   Figure 3: Transfer roller shaft
                                       Figure 4: White retaining clip

To reinstall: During
replacement, securely insert the
spring into the bushing’s boss so
that the bushing pushes on the
spring when the transfer roller is
set. The white retaining clip on
the right end of the transfer roller
is also field replaceable. To
remove the retaining clip squeeze
both tabs on the retaining clip,
and then lift it up.




Remove the I/O cover and the EIO card

                                       Figure 5: I/O cover




Pushing the two (2) tabs on the
back of the I/O cover, swing the
I/O cover away from the printer
as shown.




Pull out the I/O card.


Remove the DIMMs

Open the print cartridge door.
                                       Figure 6: DIMM cover release
Press and hold the release
button.
Grasp the rear of the cover and
pull it away from the printer until
it stops.
                                      Figure 7: Right side cover




Grasp the front and rear of the
cover and swing it out from the
printer.




                                      Figure 8: DIMM levers




Rotate the levers shown in the
figure at right to remove the
DIMM(s).
Remove Tray 2 pickup roller

                                    Figure 9: Tray 3




If Tray 3 is installed, lift the
printer off the paper cassette
assembly.




Remove the print cartridge and
remove Tray 2.
                                    Figure 10: Tray 2 pickup roller




Place the printer top-down with
the infrared port facing forward.
Be careful not to scratch the
printer or the surface.




Tilting the lever to the left, rotate
the white bushing. Stop when the Figure 11: White bushing
bushing’s tab is aligned with the
opening on the carriage.
                                     Figure 12: Bushing tabs




Align the bushing’s tab with the
opening on the carriage, and
then slide the white bushing to
the left.




                                     Figure 13: Black bushing




Tilting the lever to the right,
rotate the black bushing. If
necessary, grasp the bushing’s
lever with the needle nose pliers.




                                     Figure 14: Pickup roller shaft black
Remove the black bushing from
                                     bushing
the pickup roller’s shaft.
                                       Figure 15: Pickup roller white bushing




Slide the pickup roller to the right
so that its shaft is removed from
the white bushing.




                                       Figure 16: Pickup roller shaft




To remove the pickup roller from
its carriage grasp the left end of
its shaft and then lift up the
roller.




Remove the two (2) rollers from        Figure 17: Two White locking rollers
the pickup roller.
                                       Figure 18: Replace white rollers




Place the two (2) rollers on the
ends of the new pickup roller.




                                       Figure 19: Pickup roller insertion
Replace the pickup roller in its
carriage as follows:

   1.          Insert the non-
      slotted end of the roller’s
      shaft through the right-
      side carriage opening
      while holding the roller at
      a slight angle.
   2.          Lower the other
      end of the pickup roller
      until it rests on the
      bottom of the carriage.




Slide the slotted end of the
pickup roller’s shaft into the         Figure 20: Pickup roller slotted end
white bushing. Rotate the roller
while sliding it so that its slotted
haft rests over the drive shaft.

       CAUTION: The black bushing
       will not fit if the slotted end of
       the pickup roller’s shaft is not
       properly inserted over the
       drive shaft.




                                  Figure 21: Non-slotted end of pickup
Slide the black bushing through   shaft
the carriage opening and over
the non-slotted end of the pickup
roller’s shaft.

The tab on the black bushing
must be oriented so that it will fit
through the keyed opening on
the carriage. If the black bushing
does not fit, the slotted end of
the pickup roller’s shaft is not
properly inserted over the drive
shaft. If necessary, repeat the
previous step.

                                            Figure 22: Black bushing lock
                                            mechanism




Rotate the black bushing forward
until it locks in place.




Slide the white bushing to the
right until it goes through the             Figure 23: White bushing orientation
carriage opening. The tab on the
white bushing must be oriented
so that it will fit through the
keyed opening on the carriage.




Rotate the white bushing forward
until it locks in place.
Turn the printer upright and
install the print cartridge and any
removed paper trays.


Remove the rear cover.

Remove the DIMM cover.
                                      Figure 24: Rear output bin door




Open the rear output bin until it
stops, and then pull it again so
that it rests parallel with the
floor.




Remove the two (2) screws from        Figure 25: Rear cover screws
the back of the unit.
                                     Figure 26: Rear cover, bottom left




Pull the bottom-left corner of the
rear cover.




                                     Figure 27: Rear cover movement




Pull the rear cover down and then
out to remove it.




Remove the fusing assembly

       CAUTION: Turn the power off and unplug the power cord before removing the fusing
       assembly. After turning the power off, let the fusing assembly cool down for several
       minutes.
                                   Figure 28: PE Opening




Do not insert metallic objects
into the opening shown at right.




                                   Figure 29: Engine test button location




The print engine test button is
located on the back of the
printer as shown at right.




Remove the DIMM cover and the
rear cover.
                                   Figure 30: Two Wire connectors




To disconnect the left wire
connector pull it straight out.

To disconnect the right wire
connector, press a flat blade
screwdriver on the connector
and then pull out the connector.
                                  Figure 31: Two Grounding plate screws




Remove the two (2) grounding
plate screws.




                                  Figure 32: Fusing assembly screws




Remove the two (2) screws
which fasten the fuser assembly
to the printer.




                                  Figure 33: Fusing assembly




Remove the fuser assembly
from the printer.




To reinstall: When replacing      Figure 34: Fusing assembly guide pins
the fusing assembly, use the
guide pins to correctly align it.




Remove the Tray 1 pickup roller assembly

Remove the top cover


Remove the print cartridge, the
DIMM cover, and the rear cover.
                                    Figure 35: print cartridge door swing
                                    arm




Release the swing arm from the
print cartridge door, and push it
down in the opening.




Remove the two (2) screws from      Figure 36: Two top screws
the top of the unit.
                                     Figure 37: Two rear screws




Remove the two (2) screws from
the rear of the unit.




                                     Figure 38: Tray 1




Open Tray 1.




Release the latch on the top, left   Figure 39: Top, left latch
of the unit.
                                    Figure 40: Top cover




Lift the top cover to remove it.




                                    Figure 41: Positioning of top four
                                    screws




To reinstall: Two (2) of the four
(4) screws removed in the above
procedure are longer than the
other two (2). When replacing
the top cover, these screws go in
the holes as shown at left.




Remove the left cover
Remove the print cartridge, DIMM
cover, rear cover, and top cover.
                                     Figure 42: Top latch release




Release the latch on the top of
the unit.




Simultaneously lift the cover up
and outward.

Remove Tray 1


Remove the print cartridge, DIMM
cover, the rear cover, the top
cover, and the left cover.
                                     Figure 43: Tray 1 springs




Disconnect the springs from the
printer on the left and right side
of Tray 1.




Disconnect the pivot arms from
                                     Figure 44: Tray 1 pivot arms
Tray 1 on the left and right side
of the tray.
                                        Figure 45: Tray 1 bottom piece




Remove the bottom piece of Tray
1 by sliding it to the left.




                                        Figure 46: Pivot arm positions




Rotate the pivot arms to the
upward position and remove the
top piece of Tray 1.




Remove the pivot arms.
                                        Figure 47: Pivot arm removal
      NOTE: Each pivot arm is
      marked with either the letter L
      or R, to indicate which side of
       the printer to replace it on.




Remove the formatter PCB


Remove the print cartridge, DIMM
cover, and EIO card.
                                       Figure 48: Ribbon and power cables




Disconnect the ribbon and power
cables (call-out 1) and remove
the four (4) screws (call-out 2).




                                       1 - Ribbon and power cables

                                       2 - Four screws
Remove one (1) screw and then          Figure 49: Formatter PCB screw
remove the formatter PCB.
Remove the printer drive assembly


Remove the print cartridge, the
DIMM cover, the rear cover, the
top cover, and the formatter
PCB.
                                    Figure 50: Ribbon cable and main motor
                                    cable




Disconnect the ribbon cable and
the main motor cable.




Remove the two (2) ground
                                    Figure 51: Printer drive assembly screws
(call-out 1) and five (5) self-
tapping (call-out 2) screws.
                                     1 - Two Ground screws

                                     2 - Five Self-tapping screws
Lift out the printer drive
assembly to remove it.

Remove Tray 1 assembly and replace pickup roller


Remove the print cartridge, the
DIMM cover, the rear cover, the
top cover, the left cover, Tray 1,
the formatter PCB, and the
printer drive assembly.
                                     Figure 52: Pickup roller gears




Remove the gear in the figure at
right, rotating to move it past
the solenoid.




While facing the black bushing,
pull out its lever and rotate it
                                     Figure 53: Keyed opening for bushing
counter-clockwise until the tab
clears the keyed opening to
remove the bushing.
                                   1 - Pull out lever

                                   2 - Rotate counterclockwise
                                   Figure 54: White tab by bushing keyed
                                   opening




While facing the white bushing,
pull out its lever and rotate it
counter-clockwise until the tab
clears the keyed opening to
remove the bushing.




                                   1 - Pull out lever

                                   2 - Rotating counterclockwise
Slide the assembly to the right
until the left end of the shaft
                                   Figure 55: Tray 1 assembly
clears the opening, and then
slide the assembly back to the
left to remove it.
Remove the Tray 1 separation pad

Remove the print cartridge, the
DIMM cover, the rear cover, the
top cover, the left cover, Tray 1,
and the Tray 1 pickup roller
assembly.
                                     Figure 56: Tray 1 separation pad




Simultaneously lift up and to the
left to rotate the separation pad
forward.




                                     1 - Lifting up and left

                                     2 - Rotating forward
                                     Figure 57: Tray 1 separation pad
Remove the screw and then lift
                                     assembly
the assembly to remove it.
Remove Tray 2 separation pad

Remove Tray 2 from the unit.
                                     Figure 58: Tray 2 separation pad




Turn the tray over to access the
release tabs for the separation
pad.




                                     1 - Separation pad

                                     2 - Separation pad spring
Using a flat blade screwdriver,
release the two black plastic tabs   Figure 59: Tray 2 plastic tabs
on the underside of the paper
tray.
                                     Figure 60: Tray 2 separation pad




Lift out the separation pad.




To reinstall: Align the two black
plastic tabs with the notches in
the paper tray and click back into
place.

				
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