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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 76
7) Loosen the paper feed tray of f-center adjustment scr ews (2
pcs.) at the center section of the lift plate of the paper feed tray,
and change the gear unit position in the front/rear frame direc-
tion. Repeat the adjustment procedures from 4).
Normally if the adjustment is executed by ADJ 4 (automatic adjust-
ment), there is no need to execute this adjustment.
Only when the manual adjustment is required, execute this adjust-
Only when the manual adjustment is required, execute this adjust-
ment.
In other words, this manual adjustment is executed when a satis-
In other words, this manual adjustment is executed when a satis-
factory result is not obt ained from the automatic adjustment (ADJ
4).
ADJ 16
Scan image magnification ratio
adjustment
(Manual adjustment)
Normally if the adjustment is executed by ADJ 4 (automatic adjust-
ment), there is no need to execute this adjustment.
Only when the manual adjustment is required, execute this adjust-
Only when the manual adjustment is required, execute this adjust-
ment.
In other words, this manual adjustment is executed when a satis-
In other words, this manual adjustment is executed when a satis-
factory result is not obt ained from the automatic adjustment (ADJ
4).
16-A
Scan image magnification ratio adjustment
(main scanning direction) (Manual
adjustment) (Document table mode)
If the default adjustment value of the scan image magnification
ration adjustment (main scanning direction) of SIM 48-1, copy
image quality may be degraded. Therefore, this adjustment must
be executed only when there is a special necessity.
This adjustment must be performed in the following cases:
* When the copy magnification ratio in the copy image main scan-
* When the copy magnification ratio in the copy image main scan-
ning direction is not properly adjusted.
* When the scanner motor is replaced.
* U2 trouble has occurred.
* When the scanner control PWB is replaced.
* When the EEPROM of the scanner control PWB is replaced.
Before this adjustment, the focus adjustment ( CCD unit installing
* U2 trouble has occurred.
* When the scanner control PWB is replaced.
* When the EEPROM of the scanner control PWB is replaced.
Before this adjustment, the focus adjustment ( CCD unit installing
position adjustment) must have been completed.
1) Place a sca le on the document t able as shown in the figure
1) Place a sca le on the document t able as shown in the figure
below.
2) Enter the SIM 48-1 mode.
3) Make a normal copy and obtain the copy magnification ratio.
Press [CLOSE] key to shif t from th e simulation mode to the
copy mode, and make a copy.
4) Check that the copy magnificati on ratio is within the specified
range (100 1.0%).
If the copy magnification ratio is within the specified range (100
If the copy magnification ratio is within the specified range (100
1.0%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, per form the following
procedure.
5) Change the CCD (MAIN) adjustment value of Simulation 48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the copy magnifi-
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.02%.
Repeat the procedures 3) - 5) until the copy magnification ratio
Repeat the procedures 3) - 5) until the copy magnification ratio
is within the specified range (100 1.0%).
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