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CF5001 Field Service Ver.1.0 Sep 2003
7.4
Image quality adjustment
Conduct various image quality adjustments.
A. Procedure
1. Enter the 36 mode.
2. "36 mode menu screen"
Press the [3. Image quality adjustment] key.
3. "Image quality mode menu screen"
For the image quality adjustment, the following
items are provided:
[1. Scanner gamma adjustment]
[2. Printer gamma adjustment]
[3. Sharpness adjustment]
[4. Contrast adjustment]
[5. Image judge adjustment]
[6. ACS adjustment]
[7. Density adjustment]
[8. Tone adjustment]
[9. Recall standard data]
4. Press the key of an item you want to adjust.
5. Press the [PREVIOUS SCREEN] key to return
from each of the adjustment screen to the
"Image quality mode menu screen."
7.4.1 Scanner gamma adjustment
Conduct the gradation correction of the scanner.
When color reproduction is in a poor condition, usu-
ally conduct the printer gamma correction.
When changing the CCD unit, exposure lamp (L1),
original glass or each scanner mirror, conduct this
adjustment.
Note:
• Scanner gamma has been adjusted for each
machine. Please be noted that the scanner
gamma data is rewritten to the mean value if
the [Adj. data reset] key in the "Scanner
gamma adjustment screen" is pressed.
A. Procedure
1. After replacing a part, place a test chart on the
original glass, select A3 or 11 x 17 paper, and
press the START button.
2. Check for the foggy background or color bal-
ance.
3. If there is abnormality, enter the 36 mode.
4. "36 mode menu screen"
Press the [3. Image quality adjustment] key.
5. "Image quality mode menu screen"
Press the [1. Scanner gamma adjustment] key.
6. "Scanner gamma adjustment screen"
Press the [Adj. data reset] key.
Press the [YES] key when rewriting the scan-
ner gamma mean value. Press the [NO] to
return to the "Scanner gamma adjustment
screen" without rewriting.
7. Press the [PREVIOUS SCREEN] key to return
to the "Image quality mode menu screen."
2-81
36 MODE
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