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Field Service Ver. 2.0 Jul. 2009
12. SERVICE MODE
483
ADJUSTMENT
/ SETTING
NOTE
• Depending on the size of the test pattern, it is set in a different position. Set the
test pattern according to the instructions displayed on the control panel.
7.
Place ten blank sheets of paper on the test pattern and lower the original cover.
8.
Press the Start key. (The machine will then start scanning the test pattern.)
9.
Touch [OK] and repeat steps from 4 through 8 twice (a total of three times).
10.
Touch [Gradation Adjust] to display the Adj. Values and Conv. Values of each color (C,
M, Y and K) for Dark and Highlight.
11.
Use the following procedures to check the Conv. Value.
Dark: 0 ± 100 and Highlight: 0 ± 60: It completes the adjustment procedure.
If neither Dark nor Highlight falls outside the ranges specified above: Perform steps
from 4 to 8.
NOTE
• If the convergence falls within the specified range after the second Gradation
Adjustment, further adjustment may not be necessary.
• If a fault is detected, “0” is displayed for all values. In that case, after turning off the main
power switch, turn it on again more than 10 seconds after and then make the gradation
adjustment again.
• If either dark or highlight still remains outside the specified ranges perform D Max Den-
sity.
• If a total of four sequences of gradation adjust do not bring the values into the specified
range, check the image.
• If the image is faulty, perform the troubleshooting procedures for image problems.
12.6.2
Transfer Belt-Cleaning Bias
A. Use
• To set the level of transfer belt cleaning bias independently for each process speed.
• When the image pattern is not completely removed, it strengthen the transfer belt clean-
ing bias in order to make the cleaner more effective.
• For each processing speed, positive and negative output values can be set.
B. Procedure
• The each default setting is 0.
-5 to +5 (step:1 *)
*: One step corresponds to 5
P
A.
Y110571-1 Service Manual
Содержание d-color MF651
Страница 1: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Страница 24: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 22 Blank Page...
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Страница 511: ...Field Service Ver 2 0 Jul 2009 10 UTILITY 451 ADJUSTMENT SETTING Blank Page Y110571 1 Service Manual...
Страница 716: ...16 MECHANICAL ADJUSTMENT Field Service Ver 2 0 Jul 2009 656 ADJUSTMENT SETTING Blank Page Service Manual Y110571 1...
Страница 1053: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 10 2009 1ST EDITION 1053053 Y110571 1...