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6
Removal and Replacement
Contents
Removal and Replacement Strategy . . . . Required Tools . . . . . . . . . . . . . . . Installing Memory Cards (DRAM) . . . . Covers and Doors . . . . . . . . . . . . . Back Cover . . . . . . . . . . . . . . . EP Door Assembly . . . . . . . . . . . Memory Door . . . . . . . . . . . . . . Main Cover and Paper Input Assembly Internal Assemblies . . . . . . . . . . . . Control Panel . . . . . . . . . . . . . . Exit Roller Assembly . . . . . . . . . . Delivery Assembly . . . . . . . . . . . Fuser Pressure Plate . . . . . . . . . . Heating Element . . . . . . . . . . . . Pressure Roller . . . . . . . . . . . . . Face-Up/Face-Down Lever . . . . . . . Fuser Exit Roller Assembly . . . . . . Paper Exit Sensor Flag . . . . . . . . . Top Assemblies . . . . . . . . . . . . . . Laser/Scanner Assembly . . . . . . . . Solenoid . . . . . . . . . . . . . . . . . Pickup Roller Assembly . . . . . . . . Paper Feed Frame . . . . . . . . . . . . Transfer Roller Guide & Transfer Roller Kick Plate . . . . . . . . . . . . . . . . Separation Pad . . . . . . . . . . . . . Subpads . . . . . . . . . . . . . . . . . Feed Assembly . . . . . . . . . . . . . Bottom Assemblies . . . . . . . . . . . . Memory Door Guide . . . . . . . . . . Motor . . . . . . . . . . . . . . . . . . DC Controller . . . . . . . . . . . . . . Formatter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 6-4 6-5 6-6 6-6 6-8 6-9 6-10 6-11 6-11 6-12 6-13 6-15 6-17 6-20 6-21 6-22 6-23 6-24 6-24 6-25 6-27 6-30 6-34 6-35 6-37 6-38 6-39 6-42 6-42 6-43 6-44 6-47
Removal and Replacement
6-1
6-2
Removal and Replacement
Removal and Replacement Strategy
This chapter documents removal and replacement of Field Replaceable Units (FRUs) only. Exchange assemblies should be sent to SMO for repair. Replacement is generally the reverse of removal. Occasionally, notes are included to provide direction for difficult or critical replacement procedures.
WARNING!
Removal and 6 Replacement
Unplug the power cord from the power outlet before attempting to service the printer. If this warning is not followed, severe injury may result. Never operate or service the printer with the protective cover removed from the Laser/Scanner Assembly. The reflected beam, although invisible, can damage your eyes. The sheet metal edges of this printer can be sharp! Exercise caution when working with the printer.
Caution
The printer contains parts that are electrostatic discharge (ESD) sensitive. Always service printers at an ESD-protected workstation. To install a self-tapping screw, first turn it counter-clockwise to align it with the existing thread pattern, then carefully turn clockwise to tighten. Do not overtighten. If a self-tapping screw-hole becomes stripped, repair the screw-hole or replace the affected assembly.
Note
Always remove the toner cartridge before removing or replacing parts.
Removal and Replacement
6-3
Required Tools
· · · ·
Caution
#2 Phillips screwdriver with a magnetic tip 5.5 mm hexhead nutdriver small flathead screwdriver needlenose pliers
A Posidriv screwdriver will damage the printer's screw heads. Use Phillips only. Figure 6-1 shows the difference between a Phillips and a Posidriv screwdriver. Note that a Phillips tip has more beveled surfaces.
Figure 6-1
Phillips and Posidriv screwdrivers
6-4
Removal and Replacement
Installing Memory Cards (DRAM)
Removal and 6 Replacement
1 Unplug the power cord from the printer. You
2
3
4
5
should not install a memory card while the printer is in SleepMode. Open the Printer Door, remove the toner cartridge, and close the Printer Door. Protect the toner cartridge from light while you are working on the printer. Remove any paper in the paper tray. Gently tip the printer onto its side so that the memory cover is on top as shown in Figure 3. Remove the Memory Expansion Cover by carefully pulling the tab out and away from the printer in a gentle rocking motion. Align the memory card with the corner notch so it is positioned as in Figure 4. Push it firmly into the printer.
Replace the Memory Expansion Cover, set the printer upright, reinstall the toner cartridge, reinsert paper, and reconnect to the power source. Print a self-test page (see Chapter 3) to check that the printer recognizes the additional memory you have added. Your Total Memory in the "Printer Information" section will show the new MB total. 1 MByte card 2 MByte card 4 MByte card 8 MByte card 2 MByte total 3 MByte total 5 MByte total 9 MByte total
Removal and Replacement
6-5
Covers and Doors
Back Cover
1 Unplug the power cord and remove the parallel cable from the back of the printer. 2 Remove the toner cartridge. 3 Lift the Input Extender assembly.
Caution
You must lift the Input Extender when the covers are removed or it will break. After you have removed the covers, leave the Input Extender in this lifted position for ease of replacement.
4 Remove the (3) screws (Figure 6-2, callout 1).
Figure 6-2
Back Cover Removal (1 of 2)
6-6
Removal and Replacement
5 Separate the rear panel from the main cover, pulling the lower corners away from
the printer first. Then, insert the small flathead screwdriver into the openings at the top to pop the upper corners (Figure 6-3, callout 1). 6 Remove the cover by grabbing it on both sides and pulling it straight back with a firm pull (Figure 6-3, callout 2).
Figure 6-3
Removal and 6 Replacement
Back Cover Removal (2 of 2)
To reinstall
Make certain the Input Extender is up.
Removal and Replacement
6-7
EP Door Assembly
1 2 3 4
Unplug the power cord and remove the parallel cable from the back of the printer. Open the EP door. Remove the toner cartridge. Along 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).
Figure 6-4
EP Door Assembly Removal
6-8
Removal and Replacement
Memory Door
Removal and 6 Replacement
1 2 3 4
Unplug the power cord and remove the parallel cable from the back of the printer. Remove the toner cartridge. Gently tip the printer onto its side so that the Control Panel is on top. Carefully 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).
Figure 6-5
Memory Door Removal
Removal and Replacement
6-9
Main Cover and Paper Input Assembly
1 Remove the toner cartridge. 2 Remove memory door.
Caution
Remove the memory door first. The door will break if you remove the Main Cover without removing the memory door. Remove the EP Door Assembly. Remove the Back Cover. Remove the (2) screws from the top of the printer (Figure 6-6, callout 1). Grasp the two lower, front corners of the printer and pull gently outward to release the front of the Main Cover. 7 Lift the cover straight off. 8 Remove the Paper Input Assembly (Figure 6-6, callout 2) by rotating it forward and lifting it out with firm pressure.
3 4 5 6
Figure 6-6
Main Cover and Paper Input Assembly Removal Note
When 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.
6 - 10
Removal and Replacement
Internal Assemblies
Control Panel
1 Remove the Printer Covers. 2 Use the needlenose pliers to release the Control Panel connector (Figure 6-7,
Removal and 6 Replacement
callout 1). 3 Press 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. 4 Lift the Control Panel out.
Figure 6-7
Control Panel Removal
Removal and Replacement
6 - 11
Exit Roller Assembly
1 Remove Printer Covers. 2 Grasp 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).
3 Rotate the tabs 90 degrees, clear of the printer chassis (Figure 6-8, callout 2). 4 Lift the roller out.
Figure 6-8
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.
6 - 12
Removal and Replacement
Delivery Assembly
Removal and 6 Replacement
1 Remove the Printer Covers and Exit Roller Assembly. 2 Remove 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).
Note Figure 6-9
The EP Right-Hand assembly must be removed to access any fuser components.
Delivery Assembly Removal (1 of 2)
Removal and Replacement
6 - 13
3 Use 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.
Figure 6-10
Delivery Assembly Removal (2 of 2) Note
Upon 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.
6 - 14
Removal and Replacement
Fuser Pressure Plate
Removal and 6 Replacement
1 Remove Printer Covers and Delivery Assembly (Figures 6-9 and 6-10). 2 Remove the (2) screws (Figure 6-11, callout 1). 3 Press the Fuser Plate retainer clips out to release the Pressure Plate (Figure 6-11,
callout 2).
4 Rotate the plate around and toward the back and lift up to remove it (Figure 6-11,
callout 3).
Figure 6-11
Fuser Pressure Plate Removal
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.
Figure 6-12
Fuser Pressure Plate Replacement
6 - 16
Removal and Replacement
Heating Element
Removal and 6 Replacement
1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and Fuser
Pressure Plate (Figure 6-11).
2 Remove 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).
Figure 6-13
Heating Element Removal (1 of 3)
Removal and Replacement
6 - 17
3 Disconnect the AC voltage to the Heating Element by releasing the connector
located on the DC Controller. Press down on the connector release with a small, flathead screwdriver (Figure 6-14, callout 1). (Since this is a small space, it is much easier to reach the connector with a screwdriver.) Pull straight out (Figure 6-14, callout 2).
Figure 6-14
Heating Element Removal (2 of 3)
6 - 18
Removal and Replacement
4 Remove the wire from the wire guides along the right-side of the printer. 5 Disconnect the thermistor feedback connector in the left front side of the Fusing
Removal and 6 Replacement
Assembly (Figure 6-15).
Figure 6-15
Heating Element Removal (3 of 3)
6 Lift the Heating Element out.
To reinstall
Make sure the connectors are properly reattached.
Removal and Replacement
6 - 19
Pressure Roller
1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser Pressure
Plate (Figure 6-11), and Heating Element (Figures 6-13 through 6-15).
2 Remove the Pressure Roller guide by lifting the edge (Figure 6-16, callout 1) and
then rolling it gently backward (Figure 6-16, callout 2).
Figure 6-16
Pressure Roller Guide Removal
3 Lift the right end of the Pressure Roller up and out of the printer chassis.
Note
The right end of the Pressure Roller is greased.
4 The left side will follow easily with the Pressure Roller gear still attached.
Note
When reinstalling the Pressure Roller, apply a drop of grease to the grounding plate on the right side of the shaft. (Refer to Chapter 8 for a part number.)
6 - 20
Removal and Replacement
Face-Up/Face-Down Lever
Removal and 6 Replacement
1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser Pressure
Plate (Figure 6-11), and Heating Element (Figures 6-13 through 6-15), and Pressure Roller (Figure 6-16). 2 Rotate the lever forward 90 degrees (past the spring) and pull it straight out the front of the printer.
To reinstall
1 Make sure the lever arm is on the left and is initially pointing downward. 2 Pull the spring forward using needlenose pliers. 3 Slide the short, round tabs into the grooves on the Separation Guide Assembly. The
machined ridges on the lever will face you.
4 Release the spring so it falls in place in front of the square tab (Figure 6-17).
Note
While the shape of the lever was changed for the HP LaserJet 6L (a stiffening rod was also added), these procedures for Face-Up/Face-Down Lever removal remain unchanged. Figure 6-17 shows the lever from an HP LaserJet 5L.
Figure 6-17
Face-Up/Face-Down Lever Replacement Note
You can tell when the lever is in place because there are two plastic grooves that fit precisely in front of the Exit Rollers, and you should be able to feel the spring's release mechanism.
Removal and Replacement
6 - 21
Fuser Exit Roller Assembly
1 Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser Pressure
Plate (Figure 6-11), and Heating Element (Figures 6-13 through 6-15), Pressure Roller (Figure 6-16), and Face-Up/Face-Down Lever (Figure 6-17). 2 Remove the gear from the left end of the roller shaft by pressing down on the catching mechanism with the small flathead screwdriver and pulling the gear away. 3 Remove the Exit Roller Assembly by pressing the small, white tab upward (Figure 6-18, callout 1) and rotating it around (Figure 6-18, callout 2).
Note
While the shape of the white tab was changed for the HP LaserJet 6L, these procedures for Fuser Exit Roller Assembly removal remain unchanged. Figure 6-18 shows the white tab from an HP LaserJet 5L.
4 Slide the Exit Roller Assembly forward and out to the right of the printer.
Figure 6-18
Fuser Exit Roller Removal
6 - 22
Removal and Replacement
Paper Exit Sensor Flag
Removal and 6 Replacement
1 Remove the Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and Fuser
Pressure Plate (Figure 6-11).
Caution
Before proceeding to Step 2, examine the Paper Exit Sensor flag. It is important to note the position of the spring mechanism on the flag. The spring must be reinstalled to exactly this position.
2 Remove the Paper Exit Sensor flag by pressing down on the left side and pulling up
on the right side.
To reinstall
Note
It is important that you reinstall the flag correctly, because installing it incorrectly will cause the Control Panel to display an error with the Paper Exit Sensor (PS201). Place the left side of the flag in the correct position first, then slide the right side into place, making certain the spring is on top of the flag (Figure 6-19). If the spring exerts no pressure on the flag, it may require "respringing" by giving the spring an extra turn before reinstalling. The flag should fit snugly in place.
Figure 6-19
Paper Exit Sensor Flag Replacement
Removal and Replacement
6 - 23
Top Assemblies
Laser/Scanner Assembly
1 Remove the Printer Covers. 2 Remove both Laser/Scanner connectors (Figure 6-20, callout 1). 3 Remove all (4) screws and lift the assembly straight off (Figure 6-20, callout 2).
Note
One of the four screws is longer than the other three. Upon reinstallation, the longer screw must be replaced in its original location.
Figure 6-20
Laser/Scanner Assembly Removal
6 - 24
Removal and Replacement
Solenoid
Removal and 6 Replacement
1 Remove the Printer Covers. 2 On the left side of the printer, remove the paper pickup gear (Figure 6-21, callout 1)
by pressing the tabs in the center of the gear outward and pulling the gear off (Figure 6-21).
Figure 6-21
Solenoid Removal (1 of 2)
Removal and Replacement
6 - 25
3 Remove the Solenoid connector (J204) from the DC Controller (Figure 6-22,
callout 1).
4 Remove the self-tapping screw that holds the Solenoid in place (Figure 6-22, callout
2).
5 Unthread the wires from the printer chassis. 6 Lift the Solenoid off.
Figure 6-22
Solenoid Removal (2 of 2) Note
When reinstalling this part, the Paper Pickup Gear is keyed to go on the shaft in only one way.
6 - 26
Removal and Replacement
Pickup Roller Assembly
Removal and 6 Replacement
1 Remove the Printer Covers. 2 Remove the paper pickup gear (Figure 6-21).
Note
This gear is keyed to go on the shaft in only one way.
3 Remove the pickup roller grounding clip on the right of the printer by lifting each
end of the clip up and over the two metal guides and sliding the clip off. Figure 6-23 depicts the clip from an HP LaserJet 5L. The clip from an HP LaserJet 6L (and some HP LaserJet 5Ls) is shaped differently.
Figure 6-23
Pickup Roller Assembly Removal (1 of 2)
Removal and Replacement
6 - 27
4 Using needlenose pliers, pull the bottom of the bushing out (Figure 6-24, callout 1),
then turn it counter clockwise to release it (Figure 6-24, callout 2).
Figure 6-24
Pickup Roller Assembly Removal (2 of 2)
5 Lift the bushing out. 6 From inside the front of the printer, slide the right side of the Pickup Roller
Assembly forward, then lift the left side out.
6 - 28
Removal and Replacement
To reinstall
Removal and 6 Replacement
After placing the Pickup Roller shaft through on the left side, line up the Idler Roller tabs while repositioning the right side. Rock the shaft back and forth until the Pickup Roller and the Idler Roller tabs are correctly reinstalled.
Note
It is important that the Pickup Roller is placed back in with the two Idler Roller tabs up, so that they fit into the underside of the metal chassis behind the Laser/Scanner assembly (Figure 6-25).
Figure 6-25
Paper Pickup Roller Assembly Replacement (Inside/Front View)
Removal and Replacement
6 - 29
Paper Feed Frame
1 Remove the Printer Covers. 2 Remove the Pickup Roller Assembly (Figures 6-23 through 6-24). 3 Disconnect the following:
· Solenoid from the DC Controller at J204 (Figure 6-22, callout 1) · Two connectors from the Laser/Scanner (Figure 6-26, callout 1) · Connector from Top Cover/EP Cartridge Sensor on HP LaserJet 5L only (Figure · Connector from Switch 101 (Figure 6-26, callout 3) · Connector from Front Control Panel (Figure 6-26, callout 4)
6-26, callout 2)
Figure 6-26
Paper Feed Frame Removal (1 of 4)
6 - 30
Removal and Replacement
4 Release the catch on the control panel cable guide by using the small flathead
screwdriver to push on the tab (Figure 6-27). Then slide the guide off.
Figure 6-27
Removal and 6 Replacement
Paper Feed Frame Removal (2 of 4)
Removal and Replacement
6 - 31
5 Remove the self-tapping screw from the back sheet metal plate and lift it off (Figure
6-28, callout 1).
6 Remove the (4) hex head screws from the Paper Feed Frame (Figure 6-28, callout 2).
Figure 6-28
Paper Feed Frame Removal (3 of 4)
6 - 32
Removal and Replacement
7 Release the sensor unit connector (Figure 6-29).
Removal and 6 Replacement
Figure 6-29
Paper Feed Frame Removal (4 of 4)
8 Verify that all cables are clear of the frame and pull the frame straight back to
remove it.
To reinstall
The Paper Feed Frame may be easier to reinstall if you place the printer on its front, so that you can apply pressure while putting the screws back in place.
Removal and Replacement
6 - 33
Transfer Roller Guide & Transfer Roller
1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25),
and Paper Feed Frame (Figures 6-26 through 6-29).
2 Looking at the back of the printer, note the two small, hook-shaped release tabs on
each end of the Transfer Roller guide. Using a small, flathead screwdriver, carefully pry each tab outward to release it (Figure 6-30). 3 Roll the released portion of the guide up. To remove the Transfer Roller Guide, pull it off each end of the Transfer Roller shaft.
Figure 6-30
Transfer Roller Guide & Transfer Roller Removal (Inside/Back View)
4 This exposes the Transfer Roller.
WARNING!
Do not touch the Transfer Roller or otherwise allow it to be contaminated.
5 Working from the front of the printer, gently pry the gear side of the Transfer Roller
out first, then slide the other side out of its socket.
To reinstall
Some of the HP LaserJet 5L Printers contain a small metal spring under the Transfer Roller Guide. Upon reinstallation with these models, the small metal spring should rest under the Transfer Roller Guide.
6 - 34
Removal and Replacement
Kick Plate
Removal and 6 Replacement Caution
Be careful working with the Kick Plate and Separation Pad. The spring underneath the Kick Plate may stay attached to the Kick Plate, but it is also likely to spring away from the Kick Plate. Place the spring aside for Separation Plate disassembly.
1 Remove the Printer Covers and the Pickup Roller Assembly (Figures 6-23 and
6-24).
2 Press the Separation Pad (Figure 6-31). Allow the Kick Plate to pivot upward (a
spring underneath will push it up). Lift the Kick Plate off its mounting pins.
Figure 6-31
Kick Plate Removal
Removal and Replacement
6 - 35
To reinstall
If the spring on the Kick Plate doesn't stay on the Kick Plate, replace the spring, making certain the diameter of the spring surrounds two lower pins on the Kick Plate and rests inside the third pin. Use needlenose pliers to place the spring correctly. (See Figure 6-32.)
Figure 6-32
Kick Plate Spring Replacement
While rotating the Kick Plate into place, guide the other end of the spring onto the silver grounding plate located on the Paper Feed Frame.
6 - 36
Removal and Replacement
Separation Pad
Removal and 6 Replacement
1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 and 6-24), and
Kick Plate (Figure 6-31).
2 Lift the bottom of the white plastic tab on the rear of the Paper Feed Frame up
slightly and slide it up, toward the top of the Paper Feed Frame. This will release the Separation Pad (Figure 6-33). 3 Lift the Separation Pad 90 degrees and slide its mounting pins out of their retainers.
Figure 6-33
Separation Pad Removal
Removal and Replacement
6 - 37
Subpads
Note
When you replace the Separation Pad, you should also replace the smaller subpads at the same time.
1 Place your index finger on the subpad. 2 Press toward the top of the printer.
Figure 6-34
Subpad Removal
6 - 38
Removal and Replacement
Feed Assembly
Removal and 6 Replacement
The Feed Assembly is located in the Paper Feed Frame.
1 Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25),
and Paper Feed Frame (Figures 6-26 through 6-29). 2 Turn the Paper Feed Frame upside down. 3 Remove the Feed Roller Shaft by lifting the plastic tab up (Figure 6-35, callout 1) and sliding it out the side of the Paper Feed Frame (Figure 6-35, callout 2).
Figure 6-35
Feed Assembly Removal (1 of 3)
Removal and Replacement
6 - 39
4 Remove the self-tapping screw that holds the Feed Assembly in place (Figure 6-36,
callout 1).
Note
Before proceeding to Step 5, examine the tabs and how they fit into their slots (Figure 6-36, callout 2). The tabs must be reinstalled to exactly this position.
5 Remove the Feed Assembly.
Figure 6-36
Feed Assembly Removal (2 of 3)
6 - 40
Removal and Replacement
6 Turn the Feed Assembly over and place it in one hand with the roller-side down.
Pop one of the tabs on the other side and the feed roller should fall into your hand (Figure 6-37).
Figure 6-37
Removal and 6 Replacement
Feed Assembly Removal (3 of 3)
To reinstall
Before securing the screw, ensure the tabs on the Feed Assembly are positioned in their slots on the Paper Feed Frame (Figure 6-35, callout 2). Failure to do so will cause paper feed problems.
Removal and Replacement
6 - 41
Bottom Assemblies
Memory Door Guide
1 Remove the Printer Covers. 2 Remove any extra memory. 3 Two tabs hold the memory door guide on the printer chassis. Press each tab inward
(Figure 6-38).
4 Pull the memory door guide out.
Figure 6-38
Memory Door Guide Removal
6 - 42
Removal and Replacement
Motor
Removal and 6 Replacement
1 2 3 4 5
Remove the Printer Covers. Remove the motor connector (Figure 6-39, callout 1). Remove the memory door guide to expose the two motor screws. Remove the motor screws (Figure 6-39, callout 2). Lift the Motor out.
Figure 6-39
Motor Removal
Removal and Replacement
6 - 43
DC Controller
Remove the Printer Covers. Disconnect the motor connector from the motor (Figure 6-39, callout 1). Disconnect the Solenoid connector from the DC Controller (Figure 6-22, callout 1). Remove the back sheet metal plate and disconnect the PS202/PS204 connector (Figure 6-29). 5 Remove the AC Cable cover and disconnect the AC Cable from the DC Controller (Figures 6-13 and 6-14). 6 Tip the printer on its top, with the front facing you. 7 Remove the (4) screws (Figure 6-40, callout 1). One of the screws is a grounding screw. The location of the grounding screw is marked by a "star" etched into the bottom of the DC Controller.
1 2 3 4
Note
Make certain when you reinstall the DC Controller that the grounding screw with the washer is replaced in the same location.
Figure 6-40
DC Controller Removal (1 of 3)
6 - 44
Removal and Replacement
8 Lift the bottom plate, rotating the plate toward you from the back as if hinged on the
front. Release the Fusing Assembly connector (J206) (Figure 6-41, callout 1).
Caution Figure 6-41
Removal and 6 Replacement
ESD SENSITIVE!
DC Controller Removal (2 of 3)
Removal and Replacement
6 - 45
9 Remove the (7) remaining connectors (Figure 6-42, callout 1). 10 Remove the screws (5) that secure the DC Controller to the metal case (Figure 6-42,
callout 2).
Figure 6-42
DC Controller Removal (3 of 3)
11 Remove the DC Controller by lifting gently on the side opposite the formatter, then
sliding it out.
Caution Note
Be careful not to rotate the DC Controller as you remove it. When ordering, the DC Controller does not come with any connectors. Use the current connectors or refer to the connector chart in Chapter 8 for ordering information.
6 - 46
Removal and Replacement
Formatter PCA
Removal and 6 Replacement Caution
ESD SENSITIVE!
1 Remove the Printer Covers and complete the DC Controller removal direction up to 2 3 4 5
step 8 (Figures 6-40 and 6-41). Remove the two cable clips (Figure 6-43, callout 1). Remove all (4) screws from the formatter cover (Figure 6-43, callout 2). Lift the I/O shield to remove it. Remove the Control Panel display cable (Figure 6-43, callout 3). Slide the formatter away from the DC Controller PCA to remove it from the connector.
Figure 6-43
Formatter Board Removal Note
The formatter I/O shield comes in two separate pieces. Be careful to order the correct pieces should you need to replace them.
Removal and Replacement
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