36 MODE
MODEL MANUAL REVISED EDITION DATE PAGE METHOD
SERVICE HANDBOOK Nov. 20017155/7165
1 ADJUSTMENT
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.
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.
<1>Error 1: The
γ
sensor dirt correction has
been corrected.
<2>Error 2: No signal is output from the
γ
sen-
sor. No control patch is output.
<3>Error 3: A recurrence error occurred dur-
ing
γ
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 Operation
1
Enter the 36 mode.
2
[Adjustment mode menu Screen]
Press " Process adjustment".
3
[Process adjustment mode menu
Screen]
Press " Drum peculiarity adjust-
ment".
4
[Drum peculiarity adjustment mode
menu Screen]
Press " Auto gamma adjustment
(2 dot)".
5
[Auto gamma adjustment (2 dot)
Screen]
Press the key.
The drum and developer operate to
automatically adjust Gamma.
Adjustment completes in about 10 sec-
onds and an complete message is dis-
played.
6
Press the key to return to
the Drum peculiarity adjustment mode
menu Screen.
1
2
9
Start
RETURN
Step Operation
1
Enter the 36 mode.
2
[Adjustment mode menu Screen]
Press " Process adjustment".
3
[Process adjustment mode menu
Screen]
Press " Drum peculiarity adjust-
ment".
4
[Drum peculiarity adjustment mode
menu Screen]
Press " Cartridge set mode".
5
[Cartridge set mode Screen]
Press the key.
6
The developing unit and the drum rotate
for two mintes, and return to Cartridge
set mode Screen.
7
Press the key.
8
Select the wide paper (ie A3, A4, 11x17,
8.5x11) in the direction of the drum shaft,
set 10 copies, and press START button.
9
If black dots still appear, press the C but-
ton while pressing the P button to return
to the cartridge set mode, and repeat the
step 5 to 8.
10
Press the C button while pressing P but-
ton when black dots disappear.
11
Press key to return to the
Drum peculiarity adjustment mode
menu Screen.
1
2
10
Start
COPY SCREEN
RETURN
REPLACEMENT
1-54
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