Konica Minolta magicolor 7450, Service Manual

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11. SERVICE MENU Field Service Ver. 1.0 May 2006
152
magicolor 7450
Adjustment / Setting
F. 1’st TRANSFER
G. ELECTRIFICATION
Functions • Adjust the output value for the 1st image transfer voltage.
Use • To use when white spots appeared.
Adjustment
Range • The default setting is “0.”
-5 to +5
Adjustment
Instructions Adjust the output value for the 1st image transfer voltage by;
Increasing it: Increase the setting value (white spots will decrease)
Decreasing it: Decrease the setting value
Setting/
Procedure 1. Select [1’st TRANSFER] and press the MENU/SELECT key.
2. Select desired setting value with the Up key
U
/Down key
V
.
3. Press the MENU/SELECT key to set the adjustment value.
Gradually increase the adjustment value to the acceptable white spots level while
checking the test pattern.
NOTE
• PC Drum memory (94mm pitch) may occur by taking measure to white spots
occurred by increasing the 1st image transfer voltage to adjust it.
Check the image on the test print or the color chart when adjusting.
Functions • 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 • Use when a foggy background occurs due to a printer problem
Adjustment
Range • The default setting is “0.”
-5 to +5
Adjustment
Instructions To make the background level foggier, increase the setting value.
To make the background level less foggy, decrease the setting value.
Setting/
Procedure 1. Select [ELECTRIFICATION] and press the MENU/SELECT key.
2. Select desired color with the Up key
U
/Down key
V
and press the MENU/SELECT
key.
3. Select desired setting value with the Up key
U
/Down key
V
and press the MENU/
SELECT key.
NOTE
• When the setting has been changed, be sure to run a CALIBRATION/AIDC
process.
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