MX-2614N, MX-3114N (serv.man7). Service Manual Complete - Dec 12 - Sharp Copying Equipment Service Manual (repair manual). Page 124

MX-3114N  ADJUSTMENTS AND SETTINGS  5 – 75

 

This adjustment must be performed in the following cases:

* When the copy magnification ratio in the copy image sub scan-

ning direction is not properly adjusted.

* When the scanner motor is replaced.

* U2 trouble has occurred.

* When the scanner control PWB is replaced.

* When the EEPROM of the scanner control PWB is replaced.

1)

Place a scale on the document table as shown in the figure
below.

2)

Enter the SIM 48-1 mode.

3)

Make a normal copy and obtain the copy magnification ratio.

Go to the copy mode, and make a copy.

4)

Check that the copy magnification ratio is within the specified
range (100 

 1.0%).

If the copy magnification ratio is within the specified range (100
 1.0%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, perform the following
procedure.

5)

Change the CCD (SUB) adjustment value of Simulation 48-1.

When the adjustment value is increased, the copy magnifica-
tion ratio in the sub scanning direction is increased.

When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.1%.

Repeat the procedures 3) - 5) until the copy magnification ratio is
within the specified range (100 

 1.0%).

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2.

10

20

90

100

110

10

20

90

100

110

10

20

90

100

110

(Example 1)
Copy A
(Shorter than
the original)

(Example 2)
Copy B
(Longer than
the original)

Scale
(Original)

Copy magnifi-
cation ratio

(Original dimension - Copy dimension)

Original dimension

100%