SHARP SP1639 Technical Report

Date: Oct. 27, 1993

COPIER : SF-7800

No. : SP-1639

DISLOCATION PREVENT ION OF PAPE R FEEDER ROLLER RUBBER NON-SLIP BANDS.

1.Model name: SF-7800 / 7850 / 7855

2.General: When the copy paper feeder cassette tray is pulled out to remedy paper jams which

sometimes occur when the power supply is turned off or the front cabinet is opened during paper feeding, the paper tray rubs against the rubber non-slip bands of the paper feeder roller, someti mes dislocating them. To prevent this problem the adhesive method of the rubber non-slip bands on the paper feeder roller has been changed.

Front end.

Paper feeder roller.

Location of problem.

Rear end.

3.Cause: To prevent dislocation of the rubber non-slip bands of the paper feeder roller when fixing paper jams.

4.Description: The glue application points have been changed to the points where contact is made with the paper tray. (The glue applications points of the non-slip bands have been changed to the outer points on both front and rear (narrow) positions.)

Application points.

Before change. After change.

SHARP CORPORATION Reprography Division

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Green

The paper feeder roller parts codes have been changed in accordance with the change in glue application.

PF roller S. NROLR0839FCZ1 NROLR0839FCZ2 PF roller W. NROLR0842FCZ1 NROLR0842FCZ2

5.Effective time: (Fact ory action)

From midway through September, 1993 (including SUKM production).

After change.

Ref.

Model

No.

SF- 7800

SF- 7850

1. Interchangeable. 4. Not interchangeable.

2. C urr e nt t y pe c a n be u s ed i n p la ce of new ty pe . New ty pe cann ot be us ed i n place of curr ent type .

3. C urre nt ty pe cann ot be used i n place of new ty pe. New t y pe c a n be u sed in p la ce of curr en t ty p e.

Parts m ar ke d wi t h “ ” is i mpor t an t fo r m a in ta i ning t he s a fe ty of the s e t. B e su r e to re pl ace these pa rts with

specified ones for maintaining the safety and performance of the set.

name

7850 7855

7855

Version P/G No.

8 -414

All

421 -424 NROLR0842FCZ1 NROLR0842FCZ2 AU PF roller W 1

Current parts New parts

Parts code Parts code

NROLR0839FCZ1 NROLR0839FCZ2 AV PF roller S

Price

5. Interchangeable if replaced with same types of relate d parts in use .

6. Others.

Parts name

rank

Effec-

tive

time

See text.

Inter-

change-

ability

Note

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