Utax CD 1230, Service Manual

Page: 52 / 302

2GN/2GP/2GR
1-3-21
U053
Setting the adjustment of the motor speed
Description
Performs fine adjustment of the speeds of the motors.
Purpose
To adjust the speed of the respective motors when the magnification is not correct.
Method
1. Press the start key.
2. Select the item to be adjusted.
Adjustment
1. Press the system menu key.
2. Press the start key to output an A3/Ledger VTC pattern.
Figure 1-3-7
3. Press the system menu key.
4. Change the setting value using the +/- or numeric keys.
A: Drive motor speed adjustment
Increasing the setting makes the image longer in the auxiliary scanning direction, and decreasing it
makes the image shorter in the auxiliary scanning direction.
B: Polygon motor speed adjustment
Increasing the setting makes the image shorter in the main scanning direction and longer in the auxiliary
scanning direction; decreasing the setting makes the image longer in the main scanning direction and
shorter in the auxiliary scanning direction.
5. Press the start key. The value is set.
Completion
Press the stop key. The indication for selecting a maintenance item No. appears.
Maintenance
item No.
Description
Display Description Setting
range Initial
setting
MAIN MOTOR Drive motor speed adjustment -40 to 40 2
EJECT MOTOR Eject motor speed adjustment -7 to 15 0
POLYGON MOTR Polygon motor speed adjustment -20 to 20 -5
Correct values for an A3/Ledger output are:
A = 300
±
0.75mm
B = 270
±
1.35 mm