Olivetti d-Color MF4003 Service Manual page 226

d-Color MF4003/MF3303
1. Position the test chart correctly so that the original reference point is aligned with the scale.
2. Press the Start key to make a copy.
3. Check point C on the test pattern.
Enlarged view of the test chart
4. If the test pattern falls outside the target, change the setting using the [+] / [-] key.
• If the C width on the copy sample is less than one on test chart, increase the setting.
• If the C width on the copy sample exceeds one on test chart, decrease the setting.
5. Press the Start key to make another test pattern.
6. Check the image on the test pattern to see if the specifications are met.
7. Make adjustments until the targets are met.
5.4.5 Sub Scan Zoom Adj.
• To adjust the zoom ratio in the sub scan direction for the scanner section.
• The LED exposure unit or the scanner motor has been replaced.
NOTE
▪ Width D on the color chart and one on the test pattern are measured and adjusted so that the difference of width D satisfies the
the following target shown below.
▪ An adjustment must have been completed correctly of [Printer Area].
Target
Width D: ± 1.0 mm
* Standard size when using a scale: 300.0 mm
<Procedure>
1. Position the test chart correctly so that the original reference point is aligned with the scale.
2. Press the Start key to make a copy.
3. Check point D on the output test pattern.
Enlarged view of the test chart
D
4. If the test pattern falls outside the target, change the setting using the [+] / [-] key.
• If the D width on the copy sample is less than one on test chart, increase the setting.
• If the D width on the copy sample exceeds one on test chart, decrease the setting.
5. Press the Start key to make another test pattern.
6. Check point D on the output test pattern again.
7. Make adjustments until the targets are met.
5.5 Color Registration Adjustment
• To adjust color shift if there is any when comparing the original with copy of the plain or thick paper.
• To correct any color shift.
• This setting can be made independently for each paper type.
Paper type
Plain Paper/Plain Paper+, Thick Paper
<Procedure>
1. Load manual bypass tray with A4.
2. Press the Start key.
3. On the test pattern produced, check for deviation between the black line and the line of each color at positions X and Y.
4. Select the paper type and color to be adjusted.
5. Using the [+] / [-] key, change the setting value as necessary. (At this time, only the line of the selected color moves.)
• If the cross deviates in the direction of A, decrease the setting.
• If the cross deviates in the direction of B, increase the setting.
6. Produce another test pattern and make sure that there is no deviation.
Service Manual
C
0.990 to 1.015 (Step: 0.001)
Setting item
Color selection
Cyan, Magenta, Yellow
Setting range
X
Y
I-10
I SERVICE MODE > 5. Machine
Default
1.000
Setting range
-6 to +6 dot (step: 1 dot)
-6 to +6 dot (step: 1 dot)
Y119930-3