Seque Mode - Olivetti d-Color MF4003 Service Manual

d-Color MF4003/MF3303
Seque Mode 1
nce (initialization
and image
stabilization)/
(long image
stabilization)
2 Dmax density
adjustment
3 LD light
intensity
adjustment
4 Color
registration
adjustment
5 Dmax density
adjustment
6 LD light
intensity
adjustment
7 Gamma
correction
• *1: The IDC sensor uses the output value calculated in the last IDC registration sensor adjustment and check that the value measured on
the surface of the transfer belt (background level) is within the specified range. If the measured value is out of the specified range, mode
1 is used when the next image stabilization is carried out.
• *2: Unlike the color registration adjustment of mode 1, simplified color registration control is performed.
• *3: Unlike the gamma correction of mode 1, simplified gamma correction control is performed.
• *4: To be executed twice when an imaging unit or a transfer belt unit is replaced, or when the machine recovers from a toner empty
condition.
(4) Predrive operation
• The following describe the stabilization operations executed when, for example, the main power switch is turned ON, the sleep mode is
canceled, the front door is closed, or a malfunction is reset.
Mode Image stabilization mode
Mode 1 Initialization and image stabilization
Long image stabilization
Mode 2 Short image stabilization
Mode 3 Gamma correction + color
registration control
Mode 4 Monochrome, long image
stabilization
Service Manual
Mode 2 Mode 3
(short image (gamma
stabilization) correction +
color
registration
control)
Dmax density Color
adjustment registration
adjustment *2
Color Gamma
registration correction *3
adjustment *2
Gamma -
correction *3
- -
- -
- -
• A new imaging unit/Y,M,C is detected.
• A new transfer belt unit is detected
• The machine recovers from a toner empty condition.
• While a warning code is being displayed.
• In the last image stabilization, the value of IDC
sensor detection was out of the specified range.
• A change in environment is detected (a change in
environment exceeding the threshold value is
detected since the last image stabilization
sequence).
• The number of paper printed after the last LD
adjustment exceeds a predetermined value.
• A Dmax adjustment request is received as a result
of the last gamma correction.
• The number of paper printed after the gamma
correction exceeds a predetermined value.
• Information is provided indicating that the last
stabilization control was discontinued.
• There is a change in temperature after the lapse of
a predetermined period of time after a developing
drive stop.
The stabilization is executed when the main power
switch is turned ON even without the operating condition
• The number of paper printed after the gamma
correction exceeds a predetermined value.
• There is a change of a predetermined value or more
in temperature after the color registration
adjustment (when exiting from the sleep mode).
• A new imaging unit/K is detected.
• In the last image stabilization, the value of IDC
sensor detection was out of the specified range.
• A change in environment is detected (a change in
environment exceeding the threshold value is
detected since the last image stabilization
sequence).
• The number of paper printed after the last LD
adjustment exceeds a predetermined value.
P THEORY OF OPERATION > 1. d-Color MF4003/MF3303
Mode 4 Mode 5
(monochrome, (color
long image registration
stabilization) *4 control)
Dmax density Color
adjustment registration
adjustment *2
LD light -
intensity
adjustment
Dmax density -
adjustment
LD light -
intensity
adjustment
Gamma -
correction *3
- -
Operation condition
P-60
Mode 6 Mode 7
(monochrome, (gamma
gamma correction)
correction)
Gamma Gamma
correction *3 correction *3
- -
- -
- -
- -
- -
Image stabilization setting
Not specified
Standard or Color priority
selection
Standard or Color priority
selection
Only Color priority selection
Standard or Color priority
selection
Only Black priority selection
Mode 8
(monochrom
e, short
image
stabilization)
Dmax
density
adjustment
LD light
intensity
adjustment
Gamma
correction *3
-
-
-
Y119930-3