AR-C270 (serv.man9). (Section 7) Settings Adjustments M8-M10 - Sharp Copying Equipment Service Manual (repair manual). Page 4

This adjustment must be performed in the following cases:

•

When the scanner (writing) unit is replaced.

•

When the scanner (writing) unit is removed from the machine.

•

When the main scanning direction image magnification ratio (scan-
ner (writing) unit (Black)) is performed.

•

When a color image mis-resist occurs in the main scanning direc-
tion.

•

When the installing position is changed.

•

When a U2 trouble occurs.

•

When the ICU main PWB is replaced.

•

When the EEPROM of the ICU main PWB is replaced.

1) Enter the SIM 50-20 mode.

2) Select the paper feed cassette of A3 (11" 

×

 17") paper in the setup

item H (PAPER SEL).

∗

Use the paper tray at the bottom.

3) Press the [EXECUTE] key. The adjustment pattern is printed.

4) Check the print patterns of the rough adjustment and the fine ad-

justment for equal color on the front and the rear side.
Rough adjustment print pattern check: Check that the rough ad-
justment print pattern is at the center for the rough adjustment ref-
erence pattern.
Fine adjustment print pattern check: Check that the fine adjust-
ment print pattern is at the center for the fine adjustment reference
pattern.
(If the fine adjustment print pattern is in the range of 0 

±

 1 for the

scale of the fine adjustment reference pattern, there is no need to
adjust.)

∗

A: Rough adjustment pattern

∗

B: Fine adjustment pattern

∗

C: Adjustment range (0

±

1) 

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