NEC® LC-800 Drum Unit Remanufacturing Instructions...

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NEC® LC-800 Drum Unit

Reference Information:

OEM PN: 20-020

OEM Yield: 7,000

Recommended Tools:

Phillips head screwdriver

Approximate Remanufacturing

Time: 25 min.

Instructions:
1. Remove the phillips head screw (1) from the drum axle on the non-gear end

of the unit. Pull the axle out about 1/4. Slide the drum to the right about 1/8.

2. Remove the snap on plastic shield by unlatching the 4 clips that hold it in

place (Fig. 1).

Figure 1

3. Remove the metal phillips head screws (2) securing each end of the corona

assembly (Fig. 2). Remove the assembly by lifting it straight up (Fig. 2).
Turn the cartridge over and remove drum axle while holding the end of the
drum.

4. Pry the gear end of the OPC drum to the right and the drum will lift out.

Clean, inspect and lubricate (with padding powder) and store in a dark place.
Replace if necessary. If replacement is required, then perform the following
to remove the OEM gears:

a. Remove the screws (2) on the gear end of the drum.

Figure 2

b. Remove the plug end.

5. Remove the cleaning blade (3 screws) and vacuum out the waste bin. Be

careful not to crease the catcher blade located below the cleaning blade.
Clean, inspect and lubricate the cleaning blade. Replace if necessary.

6. The corona wire is tricky to clean if you want to disassemble it. Begin by re-

moving the 2 clear plastic screws from each end of the unit. When you loosen
the 2 on the right end of the unit you will hear a small popping noise. This is
the sound of a spring snapping past a plastic tensioning block. Remove the
2 screws and retaining block. When you lift the retaining block off you will
see a tensioning block and a pressure spring. Be sure not to lose the block

Figure 3

and spring (Fig. 3).

7. Lift the right end of the corona grid and clean the wire with a cotton swab

(Fig. 4). The tensioning block must be pushed in to allow the grid to drop over
the locking post. You must hold the block down or the spring will pop it off.
Now put the retaining block back in place keeping tension on it to prevent it
from popping off. Insert the two screws and tighten them. Use compressed
air to clean the rest rest of the corona assembly. The last thing to be done to
the corona assembly is to replace the varistor (Fig. 3) located on the left end
of the corona assembly. The original varistor must be removed by de-soldering

Figure 4

one lead and removing the screw from the second lead. To replace the varistor,
resolder the one lead onto the copper tab and wrap the other lead clockwise
around the screw one turn, then tighten the screw.

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8. Install the cleaning blade.

9. Install the OPC drum. Put the drum back in place and insert the axle three

quarters of the way. Snap in the plastic shield and then insert the axle the
rest of the way. Secure with the small phillips head screw.

10. Install the corona assembly.

Printer Compatibility Information:

AES L5

Data LTD L5

Data South 5080: Pagewriter 8, Pagewriter 8 model 1080

Pagewriter 8 model 2080, Pagelaser 8 model 3080

Pagelaser 8 model 5080.

Interface systems Laser 8

ISI Laser 8

Interkom I-4909

Kay Pro Pageprinter I, Pageprinter II

Kontron KLP-8

MDS System 340

Mitac LSD 2050

Motorola Laser Printer, PT 4000, PT 4010

NEC: LC-866, LC08, LC800, LC850, LC860, LC860 Plus

LC866 Plus, LC 890, LC 890 XL, Silentwriter 890,

Silentwriter890XL, Astra 2800, Astra 2900

Nixdorf MD07

Siemens 2522, 2523, 9022, PT10

Sperry Laser 35, Laser 8

Telenorma ISY-70

Xios L5

© 2001 Oasis Imaging Products, Inc. Any attempt to reproduce any part of these instructions without the written consent of Oasis Imaging
Products, Inc. may result in legal action. All registered trademarks are the property of their respective owners.