DM-2000 (serv.man5). DM2000 Service Manual-Unpacking Installation Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 10

(1) Image lead edge position adjustment (SIM 50-1/SIM 50-10)
a. OC image lead edge position adjustment
Note: In advance to this adjustment, the sub scanning magnification

ratio adjustment must be performed.

1) Set a scale on the OC table as shown below.

2) Make a copy.
3) Check the copy output. If necessary, perform the following adjust-

ment procedures.

4) Execute SIM 50-1.
5) Set the OC lead edge position set value (Exposure display

<AUTO> ON) to “99.”
The OC image scanning start position is shifted inside the docu-
ment edge.

6) Set the main cassette lead edge void adjustment value (Exposure

display <PHOTO> ON) * to “1.”
The lead edge void becomes the minimum.

7) Set the print start position value (Exposure display <EXP1> ON)

to  “99” and make a copy.
The print start position is shifted inside the document edge.

8) Measure the image loss R of the copied image. Enter the set

value of the image scanning lead edge position (Exposure display
<AUTO> ON) again.
● 1 step of the set value corresponds to about 0.127 mm shift.

● Calculate the set value from the formula below.
99 - R/0.127 (mm) = Image loss set value <R: Image loss meas-
urement value (mm)>

Example: 99 - 4/0.127 = 99 - 31.5 = about 67
Note: If the set value is not obtained from the above formula, per-

form the fine adjustment.

9) Measure the distance H between the paper lead edge and the

image print start position. Set the image print start position set
value (Exposure display <EXP1> ON) again.
● 1 step of the set value corresponds to about 0.127 mm shift.

● Calculate the set value from the formula below.
99 - H/0.127 (mm) = Image print start position set value <H: Print
start position measurement value (mm)>

Example: 99 - 5/0.127 = 99 - 39.4 = about 59
Note: If the set value is not obtained from the above formula, per-

form the fine adjustment.

5

10

5mm

4mm

*

The dimension varies depending on the model.

10

5mm

0mm

5

*

 The scanning edge is set. 

   (A line may be printed by scanning the document edge.)
 

5

10

0mm

0mm

*

Fit the print edge with the paper edge, and perform the 

  lead edge adjustment. 

DM-2000

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