MX3500N ADJUSTMENTS 6 – 36
20-B
Copy color balance adjustment (Auto
adjustment)
This adjustment is required in the following cases:
* When a consumable part (developer, OPC drum, transfer belt) is
replaced.
* When the CCD unit is replaced.
* When a U2 trouble occurs.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is 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 reasons, the user can
use this color balance adjustment to recover the balance.
When, however, the machine has a fatal problem or when the
machine environment is greatly changed, this function does
not work effectively.
On the other hand, the auto color balance adjustment by the
serviceman functions to recover the normal color balance
though the machine environment is greatly changed. If the
machine has a fatal problem, repair and adjust it for obtaining
the normal color balance.
To perform the adjustment, the above difference must be fully
understood.
b. Note for executing 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.
4) Before execution of the image quality check and the image
quality adjustment, be sure to execute the following correc-
tions forcibly to set the image forming section to the optimum
state.
* Execute the high density image correction (Process correc-
tion) forcibly. (SIM44-6)
* Execute the half tone image correction forcibly. (SIM 44-26)
c. Adjustment procedure (Auto color balance adjustment by
the serviceman)
1) Enter the SIM 46-24 mode.
2)
Press [EXECUTE] key. (A3 or 11" x 17" paper is automatically
selected.)
The color patch image (adjustment pattern) is printed out.
3)
Set the color patch image (adjustment pattern) paper printed in
procedure 2) on the document table.
Place the printed color patch image (adjustment pattern) paper
so that the thin lines on the paper are on the left side. Place 5
sheets of white paper on the printed color patch image (adjust-
ment pattern) paper.
4)
Press [FACTORY] key on the operation panel, and press
[EXECUTE] key.
When the color balance is customized with the manual color
balance adjustment (SIM 46-21) according to the user's
request and the color balance is registered as the service tar-
get with SIM 63-7, if the color balance is adjusted to that color
balance, select the service target.
The copy color balance adjustment (step 1) is automatically
executed to print the color balance check patch image. Wait
until the operation panel shown in procedure 5) is displayed.
Remark:
(Descriptions on FACTORY key and SERVICE key in the color
balance auto adjustment menu.)
There are two kinds of the gamma target for the color balance
auto adjustment; Factory and Service.
FACTORY key and SERVICE key are used to select one of the
above two.
Factory target color balance: Standard color balance (It can be
selected from the three kinds of fixed color balances with SIM
63-11.)
Service target color balance: The color balance can be cus-
tomized according to the user's request. (Variable)
When shipping, the service target gamma data and the factory
target gamma data are the same. Both are set to the standard
color balance when shipping.
For the service target, the customized color balance gamma
can be registered with SIM 63-7.
SIMULATION
NO.46-24
TEST
ENGINE HALFTONE AUTO ADJUSTMENT
EXECUTE
0
CLOSE
PRESS [EXECUTE] TO PROCON EXECUTION
AND
PRINT THE TEST PATCH.
(PLEASE USE SPECIFIED TYPE OF A3 OR 11”
17” SIZE PAPER
FOR THIS ADJUSTMENT
0
SIMULATION
NO. 46-24
TEST
ENGINE HALFTONE AUTO ADJUSTMENT
PLEASE SELECT THE MODE (FACTORY) OR (SERVICE) AND PLACE
THE PRINTED TEST PATCH ON DOCUMENT GLASS THEN PRESS [EXECUTE].
㪁
LIGHT AREA AT LEFT SIDE ON DOCUMENT GLASS.
,
SERVICE
FACTORY
EXECUTE
CLOSE
Summary of Contents for MX 3501N - Color Laser - Copier
Page 64: ...MX3500N ADJUSTMENTS 6 19 E F Yellow C D Magenta A B Cyan ...
Page 390: ...MX3500N PHOTOCONDUCTOR SECTION i 7 3 6 7 9 8 10 2 5 7 9 1 4 11 ...
Page 444: ...Memo ...
Page 445: ...Memo ...