9-27
Setup, Registration, and User Management > System Menu
Tone Curve Adjustment After prolonged use, or from the effects of surrounding temperature or humidity, the hue of
printed color output may shift or color drift may occur. Use this function to correct color settings
when the color of a finished copy does not match the original.
NOTE: To perform tone curve adjustment, verify that either Letter or A4 paper is loaded
into a cassette.
Procedure
Press [Start] and print the first pattern. As shown in the illustration, place the printed side down
on the platen.
Press [Start]. The first pattern is read and adjustment begins.
The second pattern is output. Confirm that a number "2" is printed on the pattern. Place the
pattern on the platen in the same way as the first pattern.
Press [Start]. The second pattern is read and adjustment begins.
Turn the main power switch off and on. The adjustment will be completed after restarting the
system.
Drum Refresh 1 Perform Drum Refresh when images show streaking with white lines. Takes about 90 seconds.
Press [Start] to perform Drum Refresh.
NOTE: Drum Refresh cannot be performed while printing. Execute Drum Refresh after the
printing is done.
Drum Refresh 2 Use this mode when white spots appear on images. Takes about 90 seconds.
To use [Drum Refresh 2], load Ledger or A3 size paper into the multi purpose tray. Press [Start]
to perform Drum Refresh.
When you run [Drum Refresh 2], the machine makes a vibrating sound for about 90 seconds
until drum refreshing is completed. The toner soiling on the ejected paper is normal and does
not indicate a fault.
NOTE: Drum Refresh cannot be performed while printing. Execute Drum Refresh after the
printing is done.
Auto Drum Refresh Auto Drum Refresh may be executed when the machine is turned on the power or recovered
from the low power mode or sleep mode. Auto Drum Refresh is executed automatically to keep
the best image quality by monitoring its peripheral temperature and humidity.
Value
Short: Perform Auto Drum Refresh as Short (maximum 180 seconds).
Normal: Perform Auto Drum Refresh as Standard (maximum 360 seconds).
Long: Perform Auto Drum Refresh as Long (maximum 450 seconds).
NOTE: When an error state such as condensation is detected, [Normal] and [Long] may
take a maximum of 630 seconds.
DP Adjustment Adjust scan action of the document processor. Place the adjustment original in the document
processor.
Press [Start] and adjustment begins.
NOTE: This adjustment is for DP Leading edge and DP center adjust. Use this adjustment
when the copy is skewed when using the Document Processor or when advised by a
Service Technician.
Call Service to obtain the adjustment original.
* If you want to enable the changed defaults immediately, move to the function screen and press the Reset key.
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