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[9] ADJUSTMENTS
1. Optical section
A. Copy magnification ratio adjustment
The copy magnification ratio must be adjusted in the main scanning
direction and in the sub scanning direction. To adjust, use TC 48-01.
(1) Outline
The main scanning (front/rear) direction magnification ratio adjustment
is made manually.
The adjustment is made by manual key operations. (The zoom data
register set value is changed for adjustment.)
The magnification ratio in the sub scanning direction is adjusted by
changing the carriage (scanner) scanning speed.
(2) Main scanning/sub scanning direction magnification
ratio adjustment
a. Cases when the adjustment is required
1) When the main PWB is replaced.
2) When the EEPROM in the main PWB is replaced.
3) When "U2" trouble occurs.
4) When repairing or replacing the optical section.
b. Necessary tools
• Scale
c. Main scanning direction adjustment procedure
1) Set the scale vertically on the document table. (Use a long scale
for precise adjustment.)
2) Set the copy magnification ratio to 100%.
3) Make a copy on A4 or 81/2" x 11" paper.
4) Measure the length of the copied scale image.
5) Calculate the main scanning direction magnification ratio.
(When a 100mm scale is used as the original.)
Paper feed
direction
6) Check that the copy magnification ratio is within the specified
7) Execute TC 48-01 to select the main scanning direction copy
Main scan direction
magnification ratio
OC mode sub scan
direction magnification ratio
8) Enter the new set value of main scanning direction copy
9) Change the set value and repeat the adjustment until the ratio is
d. Sub scanning direction adjustment procedure
1) Set the scale on the document table as shown below. (Use a long
AR-M150/M155/M155X ADJUSTMENTS 9 - 1
Main scanning direction magnification ratio
Copy image dimensions
=
Original dimension
mm
10
20
100
110
1/2mm
mm
10
20
100
110
1/2mm
Reference
Comparison point
range. If it is not within the specified range, perform the following
procedures.
magnification ratio adjustment mode.
To select the adjustment mode, use the [←/→] key.
Display
Mode
item
F-R
SCAN
magnification ratio with the copy quantity set key, and press the
[START] key.
within the specified range.
When the set value is changed by 1, the magnification ratio is
changed by 0.1%.
scale for precise adjustment.)
X 100 (%)
Original (Scale)
HARDENED
STAINLESS
JAPAN
150
120
130
140
Shizuoka
HARDENED
STAINLESS
JAPAN
120
130
140
150
Shizuoka
Copy
110
Default
LED
value
50
PRINT mode lamp
50
SCAN mode lamp
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