Auto Gamma Adjustment/Cartridge Set Mode - Konica Minolta 7155 Service Manual

36 MODE
9. Auto gamma adjustment (2 dot)
Performs gamma adjustment (2 dot) automatically.
This adjustment should be performed when the drum,
developer, write unit, or dust-proof glass is replaced.
Preparation: Be sure the drum unit is set.
Auto maximum density adjust-
ment, auto dot diameter adjust-
ment, LD1 offset adjustment , LD2
offset adjustment, and auto
gamma adjustment (1 dot) must
have been completed.
Step
Enter the 36 mode.
1
[Adjustment mode menu Screen]
2
Press " Process adjustment".
1
[Process adjustment mode menu
Screen]
3
Press " Drum peculiarity adjust-
2
ment".
[Drum peculiarity adjustment mode
menu Screen]
4
Press " Auto gamma adjustment
9
(2 dot)".
[Auto gamma adjustment (2 dot)
Screen]
Press the
Start
The drum and developer operate to
5
automatically adjust Gamma.
Adjustment completes in about 10 sec-
onds and an complete message is dis-
played.
Press the
RETURN
6
the Drum peculiarity adjustment mode
menu Screen.
Reference:
If any one of the following error messages
appears during auto gamma adjustment,
clean the TSCB (toner control sensor board),
check its installation state, and retry the auto
gamma adjustment.
γ
<1>Error 1: The
been corrected.
<2>Error 2: No signal is output from the
sor. No control patch is output.
MODEL
7155/7165 SERVICE HANDBOOK
Operation
key.
key to return to
sensor dirt correction has
γ
sen-
MANUAL REVISED EDITION
<3>Error 3: A recurrence error occurred dur-
γ
ing curve calculation.
10. Cartridge set mode
This adjustment should be performed when
black dots appears on the copy after the drum
removing and installing.
Step
Enter the 36 mode.
1
[Adjustment mode menu Screen]
2
Press " Process adjustment".
1
[Process adjustment mode menu
Screen]
3
Press " Drum peculiarity adjust-
2
ment".
[Drum peculiarity adjustment mode
menu Screen]
4
Press " Cartridge set mode".
10
[Cartridge set mode Screen]
5
Press the
Start
The developing unit and the drum rotate
for two mintes, and return to Cartridge
6
set mode Screen.
Press the
7
COPY SCREEN
Select the wide paper (ie A3, A4, 11x17,
8.5x11) in the direction of the drum shaft,
8
set 10 copies, and press START button.
If black dots still appear, press the C but-
ton while pressing the P button to return
9
to the cartridge set mode, and repeat the
step 5 to 8.
Press the C button while pressing P but-
10
ton when black dots disappear.
Press
RETURN
11
Drum peculiarity adjustment mode
menu Screen.
DATE PAGE
Nov. 2001
1-54
Operation
key.
key.
key to return to the
METHOD
REPLACEMENT