Tcr Level Setting; Background Voltage Margin - Olivetti d-Color MF651 Service Manual

Field Service Ver. 2.0 Jul. 2009
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.
(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]
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 of each color after gradation adjust.
• Use when a foggy background occurs due to a printer problem.
B. Procedure
• The default setting is 0.
1. Call the Service Mode to the screen.
2. Touch these keys in this order: [Imaging Process Adjustment]
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
-3 to +3
[TCR Level Setting].
-5 to +5 (step: 1)
Service Manual
12. SERVICE MODE
[Background Voltage
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