36 ADJUSTMENT
7. Auto Gamma Adjustment[4] Drum Characteristic Adjustment
Performing gamma adjustment automatically.(manual)
1 ADJUSTMENTThis adjustment should be performed when the1. Maximum density manual adjustment
drum, developer, write unit, or dust-proof glass isMaximum density manual adjustment should be
replaced.performed under the guidance of Minolta.
Preparation: Be sure the drum unit is set andAdjustment range: 0 to 255
auto drum potential adjustment,
auto maximum density adjustment,2. Dot diameter correction manual adjust-
auto dot diameter adjustment, LD1ment
offset adjustment, and LD2 offsetDot diameter correction manual adjustment
adjustment must have been com-should be performed under the guidance of
plete.Minolta.
Adjustment range: 0 to 255
StepOperation
1Enter the 36 mode.[5] User Paper Setting
2[36 Mode Menu Screen]This adjustment is only performed when user uses
Press ? 1 Process adjustment.?special copy paper and can not be adjusted using
3[Process adjustment Screen]the standatd adjustment process.
Press ? 2 Drum peculiarity adjustment.?This setting is applied when ?User? is selected for
4[Drum peculiarity adjustment mode?Paper type/Special size setting? in the key
menu Screen]operator mode or when ?User paper? is selected
Press ? 7 Auto gamma adjustment.?for ?Transfer/separation corona unit output plain
5[Auto gamma adjustment Screen]paper? or ?Recycled paper? in 25 mode DIPSW.
Press the START key.The data for ?64 g/m2 plain paper? are inputted as
The drum and developer operate to auto-the default.
matically adjust Gamma.
Adjustment completes in about 20 sec-StepOperation
onds and an end message is displayed.1Enter the 36 mode.
6Press the PREVIOUS SCREEN key to re-2[36 Mode Menu Screen]
turn to the Process adjustment Screen.Press ? 1 Process adjustment.?
3[Process adjustment Screen]
Reference 1:Select ? 4 User paper setting.?
If any one of the following error messages4Transfer/separation output screen ap-
appears during auto gamma adjustment, cleanpears.
the TCSB (toner control sensor board), check itsEnter data according to the user specified
installation state, and retry the auto gamma popaper.
tential adjustment.Data should be input under the guidance
<1> Error 1:of Minolta
The 3 sensor dirt correction has been
corrected 10 or more times, but it does not
converge.
<2> Error 2:
No signal is output from the 3 sensor. No
control patch is output.
<3> Error 3:
A recurrence error occurred during 3 curve
calculation.
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