AR-168N/168L ADJUSTMENTS 9 - 7
5. RSPF scan position automatic
adjustment
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.
Operation
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.
6. RSPF mode sub scanning direction
magnification ratio adjustment
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
paralleled 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 RSPF, copy is inhibited.
<Adjustment specification>
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 (RSPF
mode)
At normal:
±1.0%
48-5
Add 1:
0.1% increase
Reduce 1: 0.1%
decrease
1 – 99
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