Field Service Ver. 2.0 Jul. 2009
12. SERVICE MODE
485
ADJUSTMENT
/ SETTING
12.6.5
TCR Level Setting
A. Use
• To adjust the T/C control level when an abnormal image density occurs as a result of a
change in the amount of charge of toner and carrier due to an environmental change.
• Use when T/C changes due to changes in environmental conditions of the user site.
B. Procedure
• The default setting is 0.
-3 to +3
(1 step in positive (+) direction: 0.5 % increase, 1 step in negative (-) direction: 0.5 %
decrease, Center value 0 corresponds to 7 % T/C ratio.)
1.
Call the Service Mode to the screen.
2.
Touch these keys in this order: [Process]
o
[TCR Level Setting].
3.
Select the color to be adjusted.
4.
Enter the new setting from the 10-Key pad and [+/-] key.
To increase T/C, increase the setting value.
To decrease T/C, decrease the setting value.
5.
Touch [END] to validate the adjustment value.
6.
Check the print image for any image problem.
12.6.6
Background Voltage Margin
A. Use
• To adjust the highlight portion (fog level) to the target reproduction level by making an
auxiliary manual fine-adjustment of
J
of each color after gradation adjust.
• Use when a foggy background occurs due to a printer problem.
B. Procedure
• The default setting is 0.
-5 to +5 (step: 1)
1.
Call the Service Mode to the screen.
2.
Touch these keys in this order: [Imaging Process Adjustment]
o
[Background Voltage
Margin].
3.
Select the color to be adjusted.
4.
Enter the new setting from the 10-key pad.
To make the background level foggier, decrease the setting value.
To make the background level less foggy, increase the setting value.
5.
Touch [END] to return to the [Image Adjust] menu screen.
6.
Touch [Stabilizer].
7.
Touch [Stabilization Only].
8.
Press the Start key to validate the adjustment value.
9.
Check the print image for any image problem.
NOTE
• If the setting value has been changed, be sure to run an image stabilization
sequence to make valid the new value.
Y110571-1 Service Manual
Summary of Contents for d-color MF651
Page 1: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 24: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 22 Blank Page...
Page 27: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 1053: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 10 2009 1ST EDITION 1053053 Y110571 1...