AR-155 (serv.man10). AR150 155 ARF151 Service Manual-Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 8

5mm

10mm

(Example)

Distance between paper lead
edge and image: H = 5mm

Image loss:
R = 3mm

B4 or 8 1/2

″ × 14″ paper

A4 size rear edge

Scale image

Paper rear edge

Void amount (Standard value: 2 – 3mm)

(1) Lead edge adjustment
1) Set a scale to the center of the paper lead edge guide as shown

below, and cover it with B4 or 8 1/2

″  × 14″ paper.

2) Execute SIM 50 – 01
3) Set the print start position (AE lamp ON) (A), the lead edge void

amount (TEXT lamp ON) (B), and the scan start position (PHOTO
lamp ON) (C) to 0, and make a copy of a scale at 100%.

4) Measure the image loss amount (R mm) of the scale image.

Set C = 10 

× R (mm). (Example: Set the value of C to 30.)

When the value of C is increased by 10, the image loss is
decreased by 1mm. (Default: 50)

5) Measure the distance (H mm) between the paper lead edge and

the image print start position.

Set A = 10 

× H (mm). (Example: Set the value of A to 50.)

When the value of A is increased by 10, the image lead edge is
shifted to the paper lead edge by 1mm. (Default: 50)

6) Set the lead edge void amount to B = 50 (2.5mm).

When the value of B is increased by 10, the void amount is in-
creased by about 1mm. For 25 or less, however, the void amount
becomes zero. (Default: 50)

(2) Image rear edge void amount adjustment
1) Set a scale to the rear edge section of A4 or 11

″  × 8 1/2″ paper

size as shown in the figure below, and cover it with B4 or 8 1/2

″ ×

14

″ paper.

2) Execute SIM 50 – 01 to select the image rear edge void amount ad-

justment mode.
The set adjustment value is displayed on the copy quantity display.

3) Make a copy and measure the void amount of image rear edge.

4) If the measurement value is out of the specified range, change the

set value and repeat the adjustment procedure.
The default value is 50.

Note: The rear edge void cannot be checked with the first sheet

after entering the simulation mode, the first sheet after turn-
ing off/on the power, or the first sheet after inserting the cas-
sette. Use the second or later sheet to check the rear edge
void.

(3) Center offset adjustment
1) Set the self-made test chart for the center position adjustment so

that its center line is aligned with the center mark of the document
guide.

●

Test chart for the center position adjustment
Draw a line at the center of A4 or 8 1/2

″  × 11″ paper in the

paper transport direction.

2) Execute SIM 50 – 10 to select the print center offset (cassette

paper feed) adjustment mode.
The set adjustment value is displayed on the copy quantity display.

3) Make a copy and check that the copied center line is properly posi-

tioned.
The standard value is 0 

± 2mm from the paper center.

Document guide

Center

Copy paper
(A4 or 8 1/2

″ × 11″)

(Copy A)

(Copy B)

2.0mm or less

2.0mm or less

Copy image

Copy paper
folding line

Copy image

Copy paper
folding line

Shift

Shift

(Paper feed direction)

AR-F151

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