HP Laserjet 5 Service Manual

							EP Door Assembly
1Unplug the power cord and remove the parallel cable from the back of the printer.
2Open the EP door.
3Remove the toner cartridge.
4Along the door hinge, there is a flex point. Firmly press the left tab inward to
release it. The right tab will fall out easily (Figure 6-4).
EP Door Assembly Removal
Figure 6-4
6 - 8 Removal and Replacement 
						

							Memory Door
1Unplug the power cord and remove the parallel cable from the back of the printer.
2Remove the toner cartridge.
3Gently tip the printer onto its side so that the Control Panel is on top.
4Carefully pull the door tab out (Figure 6-5, callout 1) and away from the printer in a
gentle rocking motion (Figure 6-5, callout 2).
Memory Door Removal
Figure 6-5
6
Removal and
Replacement
Removal and Replacement 6 - 9 
						

							Main Cover and Paper Input Assembly
1Remove the toner cartridge.
2Remove memory door.
CautionRemove the memory door first. The door will break if you remove the Main Cover
without removing the memory door.
3Remove the EP Door Assembly.
4Remove the Back Cover.
5Remove the (2) screws from the top of the printer (Figure 6-6, callout 1).
6Grasp the two lower, front corners of the printer and pull gently outward to release
the front of the Main Cover.
7Lift the cover straight off.
8Remove the Paper Input Assembly (Figure 6-6, callout 2) by rotating it forward and
lifting it out with firm pressure.
Main Cover and Paper Input Assembly Removal
NoteWhen replacing the Paper Input Assembly, make certain that the mylar sheet is
positioned between the Input Feed Roller and Separation Pad and that the sheet is
not folded or bent.
Figure 6-6
6 - 10 Removal and Replacement 
						

							Internal Assemblies
Control Panel
1Remove the Printer Covers.
2Use the needlenose pliers to release the Control Panel connector (Figure 6-7,
callout 1).
3Press the tab on the top of the Control Panel downward (Figure 6-7, callout 2).
The Control Panel will pop out of the printer chassis.
4Lift the Control Panel out.
Control Panel Removal
Figure 6-7
6
Removal and
Replacement
Removal and Replacement 6 - 11 
						

							Exit Roller Assembly
1Remove Printer Covers.
2Grasp both tabs at the lower ends of the Exit Roller bushings and pull inward. This
will release the tabs from the printer chassis (Figure 6-8, callout 1).
3Rotate the tabs 90 degrees, clear of the printer chassis (Figure 6-8, callout 2).
4Lift the roller out.
Exit Roller Removal
To reinstall
The end of the Exit Roller that has a gear attached must fit into the gear train. It is
possible to reinstall the Exit Roller so that the gear end is on the opposite side of the
printer; this placement would cause paper path problems.
Figure 6-8
6 - 12 Removal and Replacement 
						

							Delivery Assembly
1Remove the Printer Covers and Exit Roller Assembly.
2Remove the EP Right-Hand assembly by pressing the tab in (Figure 6-9, callout 1)
and sliding the assembly toward the front of the printer (Figure 6-9, callout 2).
NoteThe EP Right-Hand assembly must be removed to access any fuser components.
Delivery Assembly Removal (1 of 2)
Figure 6-9
6
Removal and
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Removal and Replacement 6 - 13 
						

							3Use the magnetic screwdriver to remove the (2) screws (Figure 6-10, callout 1).
Once the screws have been removed, rotate the rear of the Delivery Assembly up
and forward and lift it out of the printer.
Delivery Assembly Removal (2 of 2)
NoteUpon reinstallation, the tabs on the front end of the Delivery Assembly must fit
under the sheet metal fuser plate below to correctly reseat the Delivery Assembly.
Figure 6-10
6 - 14 Removal and Replacement 
						

							Fuser Pressure Plate
1Remove Printer Covers and Delivery Assembly (Figures 6-9 and 6-10).
2Remove the (2) screws (Figure 6-11, callout 1).
3Press the Fuser Plate retainer clips out to release the Pressure Plate (Figure 6-11,
callout 2).
4Rotate the plate around and toward the back and lift up to remove it (Figure 6-11,
callout 3).
Fuser Pressure Plate Removal
Figure 6-11
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Removal and Replacement 6 - 15 
						

							To reinstall:
The Fuser Pressure Plate is kept in place by four locking mechanisms in each
corner. Place the rear slits in the plate over the rear brackets that hold the Fusing
Assembly (Figure 6-12, callout 1). Lower the plate over the retaining clips, pressing
on both sides of the Fuser Pressure Plate (Figure 6-12, callout, 2). It is important
that the spring is placed over the positioning pin (callout 3) because inadequate
pressure will cause fusing problems. Replace the screws.
Fuser Pressure Plate Replacement
Figure 6-12
6 - 16 Removal and Replacement 
						

							Heating Element
1Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and Fuser
Pressure Plate (Figure 6-11).
2Remove the wire cover (on the right side of the printer) for the Heating Element
wires by pressing in on the tab and pulling outward (Figure 6-13, callout 1).
Heating Element Removal (1 of 3)
Figure 6-13
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Removal and Replacement 6 - 17