Olivetti d-color MF651, Service Manual, Page: 550 / 1053

12. SERVICE MODE Field Service Ver. 2.0 Jul. 2009
490
ADJUSTMENT
/ SETTING
12.6.14 Monochrome Density Adjustment
A. Use
• To fine-adjust the density of the printed image for a black print.
• To vary the density of the printed image of a black print.
B. Procedure
• The default setting is 0.
-2 to +2 (step: 1)
1. Call the Service Mode to the screen.
2. Touch these keys in this order: [Imaging Process Adjustment]
o
[Monochrome Density
Adjustment].
3. Touch [Lighter] or [Darker] as necessary to correct the image density.
If the black is light, touch the Darker key.
If the black is dark, touch the Lighter key.
12.6.15 Development AC Voltage Choice
A. Use
• To change the setting of the development AC voltage.
• When this function is turned ON, it decreases the development AC voltage, thereby pre-
venting voltage leak from occurring.
• Use when patches of white occur in the image in an ambience of low atmospheric pres-
sure, such as in high altitudes.
• If ON is set, the screen doesn't display [Service Mode]
o
[Imaging Process Adjustment]
o [Gradation Adjust] and the Gradation Adjust is not allowed.
B. Procedure
• The default setting is OFF.
ON “OFF”
Service Manual Y110571-1