AR-RP8. Service manual - Sharp Copying Equipment Service Manual (repair manual). Page 17

AR-SP8/RP8  ADJUSTMENTS  5 - 1

Place a black chart so that it covers the SPF scan glass and the OC
glass together, and close the OC cover.

When test command 53-08 is executed, the current adjustment value
is displayed as the initial display.

* Default is 1. Adjustment range is 1 – 99. Adjustment unit 1 = about

0.127mm

* If the values are kept as the default values, SPF scan is not per-

formed properly. The front area of the proper scan position may be
scanned.

In case of AUTO, press [START] key, and the mirror unit scans from
the home position to the SPF scan position with the adjustment value
displayed. The SPF glass cover edge position is calculated from the
difference between the SPFG glass cover edge and the OC side
document glass CCD output level. If the adjustment is normal, the
adjusted value is displayed. If abnormal, the error LED lights up with
the current set value displayed. 

During the error LED is lighted, when [START] key is pressed again,
execution is performed again.

The operation is similar to test command 46-01.  (In MANUAL)

OK/ERR display in AUTO

* Use a black chart (UKOG-0011QSZZ) or prepare a chart as shown

below.
Chart size: 300 x 100, prepared with cutting sheet No. 791 (Black) or
an equivalent one.

Note: Before performing this adjustment, be sure to check that the OC

mode adjustment in copying has been completed.

1) Put a scale on the original table as shown below, and make a

normal copy (100%) on the front and the back surfaces to make a
test chart. 

Note:

Since the printed copy is used as a test chart, put the scale in
paralled with the edge lines.

2) Set the test chart  on the RSPF and make a duplex copy (D-D or D-

S) in the normal ratio (100%).

3) Compare the scale image and the actual image.

If necessary, perform the following adjustment procedures.

4) Execute TC 48-05.

5) The current front surface sub scanning direction magnification ratio

correction value is displayed in two digits on the display section.
To select SIDE1 and SIDE2, use [

←

/

→

] keys.

6) Enter the set value and press the start key.

When adjusting the RSPF, use [2-SIDED COPY] key to select
single/duplex after entering the one page print mode, performing 2-
page single copy.

* When there is no document in SPF, copy is inhibited.

Mode

Display 

item

Default

LED

SPF scan position auto 
adjustment 

AUTO

1

COPY mode lamp

SPF scan position manual 
adjustment 

MANU

1

PRINT mode lamp

Reason: To prevent erroneous detection by disturbing light of a

fluorescent lamp, etc. 

<When OK>

<When ERR>

53-08 SPF AUTO

AUTO  100% **    OK

53-08 SPF AUTO

AUTO  100% **    ERR

6cm or more is required.

The size of the black chart (UKOG-0011QSZZ) is 297 x 420. Divide it
into four for use. 

Mode

Display 

item

Default

LED

Sub scan magnification ratio 
adjustment on the surface of SPF/
RSPF document 

SIDE1

50

COPY 
mode lamp

Sub scan magnification ratio 
adjustment on the surface of 
RSPF document

SIDE2

50

PRINT 
mode lamp

Adjustment 

mode

Spec value

TC

Set value

Setting 

range

Sub scanning 
direction 
magnification 
ratio (SPF/RSPF 
mode)

At normal: 
±1.0%

48-5

Add 1: 
0.1% increase
Reduce 1: 0.1% 
decrease

1 – 99