SHARP sp1924 Technical Report

COPIER : SF-2014

Date

:

Sep. 7, 1995

1. ESTABLISHMENT OF SERVICE PARTS TO TROUBLE SHOOT PAPER DELIVERY SLIP JAMS
AND PREVENT ABNORMAL NOISE.

2. IMPROVEMENT OF INCONSISTENCIES AND MAGNIFICATION ERRORS DURING COPY
ENLARGEMENT OPERATIONS.

3. NOTIFICATION OF CHANGE IN PARTS AND PARTS ADDITIONS.

1. Establishment of service parts to trouble shoot paper delivery slip jams and prevent
abnormal noise.

1.Model name: SF-2014/2114/2214/CM14

Z-800, SN-1420/1430/CM11 (only for machines bound for the USA).

No. : SP-1924

2.General: A change in shape (addition of ribs) in the second paper feeder frame, the 250 cassette

paper feeder frame and the 250 cassette was reported in technical report no. SP-1896
as an improvement measure for paper delivery slip jams and abnormal noise. It is
difficult, however, to exchange units out in the market that were produced before the
changes were introduced with the new units, because it entails exchanging the frame
itself, requiring the exchange of many smaller, related parts. To alleviate this problem,
spacers which can replace the ribs have been established as service parts.

3.Description:

250 cassette paper feeder frame: Second cassette paper feeder frame:

SHARP CORPORATION Reprography Division

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Green

C

250 cassette:

250 cassette sub-sheet.

( 5 locations )

2. Improvement of inconsistencies and magnification errors during copy enlargement
operations.

1.Model name: SF-2214

SN-1430 (only for machines bound for the USA).

2.General: Inconsistencies and magnification errors sometimes occurred during the copy check

carried out during the production process. The problem occurred during enlargement
copy operations (129%) when using the SPF, and was caused by the following reason.

<Reason> The problem was caused by a combination of two factors: the increase in
the drive load of the SPF and the lack of margin on the enlargement side of
the SPF motor control circuit.

3.Description: Changes and additions have been carried out on a portion of the resistors in the SPF

control PWB to improve performance.

á The resistor in location R322 has been changed from 15kΩ to 10kΩ.
í A 22 kΩ resistor has been attached to the rear side between pin-1 and pin-8 of IC 301.

4.Action: Japan production: From the start of 1995 August production.

China (SOCC) production: From 1995 mid-July production.

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