SHARP sp1912 Technical Report

COPIER : SF-2116

Date

:

Jul. 26, 1995

No. : SP-1912

AN ALTERATION TO THE SOFTWARE OF
SF-2116/2118

1.Model name: SF-2116/2118

2.General: A description of changes which should be made to correct the poor functioning of the

software.

3.Description: 1. The toner control sensor value received when performing Simulation 50-02, part D,

changes from it’s correct base value. (The value changes to 50 or 0, resulting in
‘‘overtoning’’)

2. When Simulation 50-02 is performed, the counter display shows only the last two
digits of the number entered, but after the Simulation is completed, if the number that
was entered is called up again, only the first two digits are displayed.

* Machines equipped with versions of ROM earlier than Version 2.5 show the

malfunction mentioned in (1). Please carry out all adjustments using Simulation 50-01
and avoid the use of Simulation 50-02. Because it is necessary to use the values from
RRC-A and RRC-B in the calculations, we have prepared a chart containing those values

Please refer to it when necessary.

4.Changes: Software update - from Ver. 2.2 to Ver. 2.5

5.Action: July, 1995 production on.

SHARP CORPORATION Reprography Division

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Green

C

[Carrying out the adjustments using the reference chart]

(Adjustment instructions)

á Place the scale marker on the manuscript unit.

í

Press the keys in the order indicated above. (Simulation 50 will commence) The
READY lamp will come on and the value previously entered (anything from 1-99) will be
displayed. This is the RRC-A information.

ó Set the values for A and B and then make copies at 100% and then 200%.

ú Measure the distance from the edge of the paper to the end of the scale measure, and

find the values for RRC-A and RRC-B, as explained below.

If the preset value for RRC-A is not correct, the positioning of copies at different
magnifications will differ. RRC-B is a preset value which is designed to adjust the
timing of when the RRC goes on, so that the front of the copy will match the front
of the image on the drum.

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