Olivetti d-Color MF4003 Service Manual page 232

d-Color MF4003/MF3303
7.2 Stabilizer
• Use if an image problem persists even after gradation adjustment has been executed.
Mode
Initialize+Image Stabilization
Stabilization Only
<Procedure>
1. Select an execution mode.
2. Touch the Start key to start Stabilizer. The Start key turns orange and stays lit up orange during the Stabilizer sequence.
3. Stabilizer is completed when the Start key turns blue.
7.3 Max Image Density Adj
• To adjust gradation, color, and image density to target reproduction levels by varying the maximum amount of toner sticking to paper
through auxiliary manual fine-adjustment of gamma of each color after gradation adjust.
• An image quality problem is not corrected even after gradation adjust has been run.
Copy, Printer Cyan, Magenta, Yellow, Black
<Procedure>
1. Select a setting item.
2. Enter the new setting from the 10-Key pad and [+/-] key.
• To increase the maximum amount of toner sticking, increase the setting value.
• To decrease the maximum amount of toner sticking, decrease the setting value.
3. Touch [END].
NOTE
▪ If the setting value has been changed, be sure to perform [Imaging Process Adjustment] -> [Stabilizer] -> [Stabilization Only].
7.4 Image Background Adj
• To adjust the highlight portion (fog level) to the target reproduction level by making an auxiliary manual fine-adjustment of γ of each color
after gradation adjust.
• Use when a foggy background occurs due to a printer problem.
Setting item
Cyan, Magenta, Yellow, Black
<Procedure>
1. Select a setting item.
2. Enter the new setting from the 10-Key pad and [+/-] key.
• To make the background level foggier, decrease the setting value.
• To make the background level less foggy, increase the setting value.
3. Touch [END].
NOTE
▪ If the setting value has been changed, be sure to perform [Imaging Process Adjustment] -> [Stabilizer] -> [Stabilization Only].
7.5 Paper Separation Adjustment
• By changing the period between the activation of the registration roller and the 2nd image transfer output, the paper separation position can
be adjusted for the 1st and 2nd sides of paper.
• To ensure proper balance between paper separating and image transferring performances by varying the paper separation position applied
for duplex printing in hot and humid conditions.
Setting item
First Side/Second Side
<Procedure>
1. Select a setting item.
2. Enter the new setting from the [+] / [-] keys.
• Priority on paper separation performance: Increase the setting value
• Priority on image transfer performance: Decrease the setting value
3. Touch [END] to validate the setting value.
4. Check the print image for any image problem.
7.6 TCR Level Setting
• 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.
Service Manual
To carry out an image stabilization sequence after the historical data of image stabilization control has
been initialized.
Use if tone reproduction and maximum density are faulty even after image stabilization has been
executed.
When color shift correction is needed again after the machine maintenance.
The image stabilization sequence is carried out without clearing the historical data of image stabilization
control.
When [Max Image Density Adj] and [Image Background Adj] of Service Mode are changed.
Setting item
-5 to +5 (step: 1)
• 1 step corresponds to 10V.
Item
-10 to +10 (Step: 1)
• 1 step corresponds to 0.03 in density difference.
Setting value
Setting value
-10 mm to +10 mm (step: 0.1 mm)
I-16
I SERVICE MODE > 7. Imaging Process Adjustment
Setting value
Default setting
Default
setting
0
0
Default setting
0.0 mm
Y119930-3