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36 MODE
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."
2
KONICA MINOLTA 8050/CF5001/C500/8150 Field Service Ver.3.0 Dec. 2004
7.4.1 Scanner gamma adjustment
Conduct the gradation correction of the scanner.
When color reproduction is a poor condition, usually
conduct the printer gamma correction of the pro-
cess adjustment.
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.
Note:
• For the start button, be sure to press the
hard button, not the soft key on the LCD.
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."
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