Sharp MX-4100N Service Manual page 98

2) Enter the simulation 63-2 mode.
3) Select, [DSPF SHADING].
4) When [EXECUTE] key is pressed, it is highlighted and shading
is started.
* When the operation is executed, the document is trans-
ported by about 25mm, and shading data are obtained dur-
ing transport.
* During execution, "SHADING EXECUTING..." is displayed.
* When [EXECUTE] key is pressed during execution, the
operation is interrupted.
* When shading is completed normally, [EXECUTE] key
returns to the normal display and "COMPLETED" is dis-
played.
* When [SYSTEM SETTINGS] key is pressed during other
than printing, the display returns to the sub number entry
screen.
<Descriptions of keys>
Display
OC OC analog correction level correction, and shading
SHADING correction data making (Document table mode)
DSPF DSPF analog correction level correction, and shading
SHADING correction data making (SPF mode)
<Result display>
Display
COMPLETE Normal completion
ERROR Abnormal completion
INCOMPLETE Incomplete, interruption
Content
Content
MX-5001N ADJUSTMENTS 5 – 56
20-B Copy color balance adjustment
(Auto adjustment)
This adjustment is needed in the following situations:
* When a consumable part (developer, OPC drum, transfer belt) is
replaced.
* The CCD unit has been replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
a. General
The color balance adjustment (auto adjustment) is used to adjust
the copy density of Cyan, Magenta, Yellow, and Black with SIM 46-
24 or the user program automatically.
(When this adjustment is executed, the color balance adjustments
of all the copy modes are revised.)
There are following two modes in the auto color balance adjust-
ment.
1) Auto color balance adjustment by the serviceman (SIM 46-24
is used.)
2) Auto color balance adjustment by the user (The user program
mode is used.) (The color balance target is the service target.)
The auto color balance adjustment by the user is provided to
reduce the number of service calls.
If the copy color balance is lost for some reason, the user can
use this color balance adjustment to recover the balance.
When, however, the machine has a fatal problem or when the
machine condition is greatly changed, this function does not
work effectively.
If the machine condition is dramatically changed, a fatal prob-
lem occurs, or the normal color targets cannot be obtained,
service must recalibrate the machine to specification.
To perform the adjustment, the above difference must be fully
understood.
b. Note for execution of the color balance adjustment (Auto
adjustment)
1) The print engine section must have been adjusted properly.
2) The CCD gamma adjustment must have been adjusted prop-
erly.
3) Be sure to use the specified paper for color.