Sharp SF-1120, SF-1020 Adjustment of each section, Lens reference position adjustment, 51 50

Models: SF-1120 SF-1020

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2-3. Adjustment of each section

A. Lens reference position adjustment

In this model, the reference value according to each lens charac- teristics must be entered. With this value, the lens home position is determined.

<Procedure>

(1)Execute simulation 48-01

Perform the following key operation.

C —

ë

0/

4 — 8

 

 

 

ë

 

PSW — 1 — PSW

"A" is displayed on the third digit of the copy quantity dis- play, and the previously set value or 50 is displayed on the second and the first digits.

Numerals

 

1

2

3

 

 

4 5 6

7 8 9

0/ C

Substitute the "O – L" value (variation in the distance be- tween the original and the lens) on the lens value label at- tached to position B shown in the figure below into the follow- ing formula, and input the obtained value.

B (Lens value label)

50 – {(O – L value) × 5} = Correction reference value

51 50 49

Lens

<Example> When the lens value is +1.2;

50 – (1.2 ×5) = 44 (Correction reference value = input value)

<Check after adjustment>

Be sure to check that the magnification ratio cam is at the home position as shown in the figure below.

B. No. 4/5 mirror reference position adjustment

<Procedure>

(1)Remove the external fittings.

(2)Loosen two screws (A) which are fixing the No. 4/5 mirror and the No. 4/5 mirror drive holder to the No. 4/5 mirror holder.

No.4/5

drive rack

Screw A

No.4/5 drive holder

No.4/5 mirror holder

7 – 4

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Sharp SF-1120, SF-1020 service manual Adjustment of each section, Lens reference position adjustment, 51 50