Sharp Mx 2300n Service Manual

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 27
 
16Scan image off-center adjustment
This adjustment is required in the following cases:
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When the RSPF section is disassembled.
* When the RSPF unit is installed.
* When the RSPF unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
 16-A Scan image off-center (Document table
mode)
1) Make a copy of the adjustment chart (made by your self) in the
adjustment mode (document table or RSPF).
2) Check the copy image center position.
If A – B = ± 1.0mm, the adjustment is not required.
If the above condition is not satisfied, perform the following
procedures.
3) Enter the simulation 50-12 mode.4) Select the adjustment mode OC with the scroll key.
5) Enter the adjustment value with 10-key, and press [OK] key.
The entered value is set.
When the set value is increased, the main scanning print posi-
tion is shifted to the front side by 0.1mm.
6) Press [CLOSE] key and shift from the simulation mode to the
copy mode and make a copy.
Repeat the procedures of 2) – 6) until the above condition is
satisfied.
 16-B Scan image off-center (RSPF mode) (Refer
to the MX-RPX1 SM.)
 
17Print area (Void area) adjustment
(Print engine section)
This adjustment is required in the following cases:
* When the LSU is replaced or removed.
* When the paper tray is replaced.
* When the paper tray section is disassembled.
* When the manual paper feed tray is replace.
* When the manual paper feed tray is disassembled.
* When the duplex section is disassembled.
* When the duplex section is installed or replaced.
* When the large capacity paper feed tray is installed or replace.
* When the large capacity paper feed tray section is disassembled.
* When the resist roller section is disassembled.
* When a U2 trouble occurs.
* When the PCU PWB is replaced.
* When the EEPROM on the PCU PWB is replaced.
(Caution)
Before executing this adjustment, be sure to execute ADJ 8 Print
image magnification ratio adjustment (BK) (Main scanning direc-
tion) (Print engine section) in advance.
1) Enter the simulation 50-10 mode.

C
B
!
>
!
C 
B

C
(
B
(
!
.
!
C
(
!
>
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2
/
1
n
n 
B
(

)
2
1
1S
*
0
A:A9æxx
B9æxx9çOC
9çSPF(SIDE1)
SIMULATIONNO.50-12
ORGINAL CENTER OFFSET SETUP
xx
:1:*99:	
OK
TESTCLOSE
C9æxx9çSPF(SIDE2)
EXECUTE
EXECUTE
0
A:Axxx
Bxx
!BK-MAG

!MTF
SIMULATION
!NO.50-10
PAPER CENTER OFFSET SETUP
xxx
60140
OK
TEST
EXECUTE
CLOSE
Cxx
!CS1
Dxx
!CS2
0
A:
!Axxx
Bxx
!BK-MAG

!MTF
SIMULATION
!NO.50-10
PAPER CENTER OFFSET SETUP
xxx
60140
OK
TEST
EXECUTE
CLOSE
Cxx
!CS1
Dxx
!CS2
End of print 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 28 2) Set A4 (11 x 8.5) paper to all the trays, and select the set item
J with the scroll key. Enter the value corresponding to the
adjustment target paper feed tray.
3) Press [EXECUTE] key.
The adjustment pattern is printed.
4) Check the adjustment pattern to confirm that the items below
are in the range of the standard values.
(Note) Feed paper from all the paper feed trays to confirm.
If the above condition is not satisfied, or if it is set to a desired
condition, execute the simulation 50-1.
5) Enter the simulation 50-1 mode.6) Select the adjustment item with the scroll key, and enter the
adjustment value and press [OK] key.
When the adjustment value is increased, the void area is
increased. When the adjustment value is decreased, the void
area is decreased. When the adjustment value is changed by
1, the void area is changed by 0.1mm.
(Note)
The adjustment value and the actual void area are related as
follows:
Adjustment value/10 = Actual void area
After execution of the above, perform procedures 1) – 4) to
check that the void area is within the specified range.
Though the lead edge void area adjustment value is proper, if
the lead edge void area is not within the specified range,
change the adjustment value of RRCB-XXX of SIM 50-1.
Repeat the above procedures until a satisfactory result is
obtained.
 
18Copy image position, image loss
adjustment
 18-A Copy image position, image loss adjust-
ment (Document table mode)
This adjustment is required in the following cases:
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When the LSU is replaced or removed.
* When the resist roller section is disassembled.
* When a U2 trouble occurs.
* When the PCU PWB is replaced.
* When the EEPROM on the PCU PWB is replaced.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
NOTE: Before executing this adjustment, be sure to confirm that
the ADJ 17 Print area (Void area) adjustment (Print engine
section) has been completed normally.
Content Standard adjustment value
X Lead edge void area 3.0 ± 1.0mm
Y Rear edge void area 2.0 ± 1.0mm
Z1/Z2 FRONT/REAR void area 2.0 ± 2.0mm
X
Y
Z2
2.0±2.0mm 3.0±1.0mm
2.0±1.0mm Z1
2.0±2.0mm
OK
10-key
CLOSE
A:
A9æxx
B9æxx
C9æxx
D9æxx9çRRCA
9çRRCB-CS12
9çRRCB-CS34
9çRRCB-LCC
SIMULATION NO.50-01
LEAD EDGE ADJUSTMENT VALUE
xx
099
OK
TEST
CLOSE0
A:
A9æxx
B9æxx
C9æxx
D9æxx9çRRCA
9çRRCB-CS12
9çRRCB-CS34
9çRRCB-LCC
SI MULATI ONNO. 5 09Ù01
LEAD EDGE ADJUSTMENT VALUE
xx
:0:*99:	
OK
TEST
0
Display/
ItemContentAdjustment 
rangeDefault 
valueStandard 
adjustment 
value
DENA Void are 
amount 
adjustmentLead edge 
void area 
adjustment1 – 99 30 3.0 ± 
1.0mm
DENB Rear edge 
void area 
adjustment1 – 99 20 2.0 ± 
1.0mm
FRONT/
REARFRONT/
REAR void 
area 
adjustment1 – 99 20 2.0 ± 
2.0mm
Display 
itemContentAdjustment 
rangeDefault 
value
RRCB-
CS12Image lead 
edge 
position 
adjustment 
valueResist 
motor ON 
timing 
adjustmentStandard 
cassette1 – 99 50
RRCB-
CS34Desk 1 – 99 50
RRCB-
LCCLCC 1 – 99 50
RRCB-
MFTManual 
feed1 – 99 50
RRCB-
ADUADU 1 – 99 50 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 29 1) Place a scale on the document table as shown in the figure
below.
Place a scale so that it is in parallel with the scanning direction
and that its lead edge is in contact with the document guide
plate.
Place white paper on the document table so that the scale lead
edge can be seen.2) Enter the simulation 50-1 mode.
3) Set RRCA, LEAD, and SIDE to the default values.
4) Perform the image lead edge reference position adjustment.
Press [CLOSE] key, and shift from the simulation mode to the
copy mode and make a copy in 100% mode and in 200%
mode.
When the adjustment value of RRCA is proper, the lead edge
image from 3.0mm is not copied in either of 100% and 200%
copy scale.
If not, change and adjust the RRCA value.
(Adjust so that the lead edge image from 3.0mm is not copied
in either of different copy magnification ratios.)
Repeat the above procedures until a satisfactory result is
obtained.5) Image loss adjustment
When the adjustment item of the image loss below is set to the
default value, it is adjusted to the standard state.
If it is not in the above standard state, or when it is set to a
desired value, change these adjustment items.
Void area: 3.0mm, Image loss: 3.0mm
When the adjustment value is increased, the image loss is
increased. When the adjustment value is decreased, the
image loss is decreased.
When the adjustment value is changed by 1, the image loss is
changed by 0.1mm.
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
OK
10-key
CLOSE
A:A9æxx
B9æxx
C9æxx
D9æxx9çRRCA
9çRRCB-CS12
9çRRCB-CS34
9çRRCB-LCC
SIMULATION NO.50-01
LEAD EDGE ADJUSTMENT VALUE
xx
099
OK
TEST
CLOSE0
A:A9æxx
B9æxx
C9æxx
D9æxx9çRRCA
9çRRCB-CS12
9çRRCB-CS34
9çRRCB-LCC
SI MULATI ONNO. 5 09Ù01
LEAD EDGE ADJUSTMENT VALUE
xx
:0:*99:	
OK
TEST
0
Item Display item Content Adjustment range Default value
A RRCA Image lead edge position 
adjustment valueDocument lead edge reference position (OC) 0 – 99 50
B RRCB-CS12 Resist motor ON timing 
adjustmentStandard cassette 1 – 99 50
C RRCB-CS34 Desk  1 – 99 50
D RRCB-LCC LCC 1 – 99 50
E RRCB-MFT Manual feed 1 – 99 50
F RRCB-ADU ADU 1 – 99 50
G LEAD Image loss adjustment Lead edge image loss adjustment 0 – 99 30
H SIDE Side image loss adjustment 0 – 99 20
I DENA Void area amount adjustment Lead edge void area adjustment 1 – 99 30
J DENB Rear edge void area adjustment 1 – 99 20
K FRONT/REAR FRONT/REAR void area adjustment 1 – 99 20

100%
200%5mm10mm
5mm10mm
Paper lead
edgeScale image 3.0mm position
Display/
ItemContentAdjustment 
rangeDefault 
valueStandard 
adjustment 
value
LEAD Image loss 
adjustment 
valueLead edge 
image loss 
adjustment 0 – 99 30 3.0 ± 
1.0mm
SIDE Side image 
loss 
adjustment0 – 99 20 2.0 ± 
1.0mm
5mm10mm4
3 2 1
Paper lead edge
Copy area
Maginification ratio: 400% 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 30
 18-B Copy image position, image loss adjust-
ment (RSPF mode) (Refer to the MX-RPX1
SM.)
 
19Print lead edge image position
adjustment (Printer mode) (Print
engine section)
This adjustment is required in the following cases:
* When the resist roller section is disassembled.
* When the LSU is replaced or removed.
* When a U2 trouble occurs.
* When the PCU PWB is replaced.
* When the EEPROM on the PCU PWB is replaced.
(Caution)
This adjustment is performed by the user to increase the lead edge
void area to greater than the standard value (3mm) in the printer
mode.1) Enter the simulation 50-05 mode.
2) Select the set item E with the scroll key, and enter the value
corresponding to the paper feed tray with A4 (11 x 8.5) paper
in it.
3) Press [EXECUTE] key.
The adjustment pattern is printed.
4) Measure the distance from the paper lead edge the adjustment
pattern to the image lead edge, and check to confirm that it is
in the standard adjustment value range.
Standard adjustment value: 3.0 ± 2.0mm
If the above condition is not satisfied, perform the following
procedures.5) Select the adjustment target of the paper feed mode adjust-
ment item DENC with the scroll key.
6) Change the adjustment value.
Enter the adjustment value and press [OK] or [EXECUTE] key.
When [EXECUTE] key is pressed, the adjustment pattern is
printed.
When the adjustment value is increased, the distance from the
paper lead edge to the image lead edge is increased. When
the adjustment value is decreased, the distanced is
decreased.
When the set value is changed by 1, the distance is changed
by about 0.1mm.
Repeat the procedures 4) – 6) until the condition of 4) is satisfied.
 
20Copy color balance/density adjust-
ment
(1) Note before execution of the copy color balance/density
adjustment
* After completion of this adjustment, the printer color balance/
density adjustment must be executed.
* Requisite conditions before execution of the copy color balance/
density adjustment
Before execution of the copy color balance/density adjustment,
check to insure that the adjustments which affect the copy color
balance/density adjustment have been completed.
The importance levels of them are shown below.
EXECUTE
EXECUTE
0
A:A9æxxx
B9æxxx9çDEN-C
9çDEN-B
SIMULATIONNO.50-05
LEAD EDGE ADJUSTMENT VALUE (PRINTER)
xxx
199
OK
TEST
EXECUTE
CLOSE
C9æxxx9çFRONT/REAR
D9æxxx9çMULTI COUNT
0
A:A9æxxx
B9æxxx9çDEN-C
9çDEN-B
SIMULATIONNO.50-05
LEAD EDGE ADJUSTMENT VALUE (PRINTER)
xxx
199
OK
TEST
EXECUTE
CLOSE
C9æxxx9çFRONT/REAR
D9æxxx9çMULTI COUNT
Endofprint
Display/Item Content Adjustment range Default value Standard adjustment value
A DEN-C Printer print image lead edge adjustment 1 – 99 30 3.0 ± 2.0mm
D MULTI COUNT Print quantity 1 – 999 1 —
E PAPER MFT Cassette select Manual feed 1 – 6 1 2 (CS1)
CS1 Cassette 1 2
CS2 Cassette 2 3
CS3 Cassette 3 4
CS4 Cassette 4 5
LCC LCC 6
F DUPLEX YES Duplex print select Select 0 – 1 0 1 (NO)
3.0±2.0mm 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 31 (The following items affect the copy color balance/density
adjustment, and must be checked and adjusted before execu-
tion of the image quality adjustments.)
1) The following adjustment items must be adjusted properly.
2) The set values of the following simulations must be set to the
default values.
3) The following items (correction functions) of SIM 44-1 must be
set to ENABLE (default).(The following items affect the copy color balance/density
adjustment, but it is not required to adjust them frequently.
When, however, a trouble occurs, check and adjust them.)
1) The following items must be adjusted properly.
(Relationship between the servicing job contents and the copy
color balance/density adjustment)
Note that the preliminary jobs before execution of the copy color
balance/density adjustment depend on the machine status and the
servicing conditions.
Follow the flowchart of the copy color balance/density adjustment
procedures depending on the actual conditions.
There are following four, major cases.
1) When installing the machine.
2) When the periodic maintenance is performed.
3) When a repair, an inspection, or a maintenance is performed.
(When a consumable part is replaced.)
4) When a repair, an inspection, or a maintenance is performed.
(Without replacement of a consumable part)
Job 
NoAdjustment itemSimulation 
to be used
ADJ 
5Image density 
sensor, image 
registration 
sensor 
adjustmentADJ 
5AColor image sensor calibration 44-13
ADJ 
5BColor image density sensor, 
black image density sensor, 
image registration sensor 
adjustment44-2
ADJ 
6Image skew adjustment (LSU (writing) unit) 64-1/61-4
ADJ 
7OPC drum 
phase 
adjustmentADJ 
7AOPC drum phase adjustment 
(Auto adjustment)50-22
ADJ 
7BOPC drum phase adjustment 
(Manual adjustment)44-31
ADJ 
10Image 
registration 
adjustment 
(Print engine 
section)ADJ 
10AImage registration adjustment 
(Main scanning direction, sub 
scanning direction) (Auto 
adjustment) 50-22
ADJ 
10BImage registration adjustment 
(Main scanning direction) 
(Manual adjustment)50-20
ADJ 
10CImage registration adjustment 
(Sub scanning direction) 
(Manual adjustment)50-21
SIM No Adjustment/setting item Default value
46-1 A – U 50
46-2 A – L 50
46-10 A – O 500
46-16 A – O 500
Display Content Set rangeDefault 
value
HV Normal operation high-
density process control YES/
NO settingNormal 
(Inhibit: 1: NO)
Highlighted 
(Allow: 0: YES)Allow
HT Normal operation half-tone 
process control YES/NO 
settingAllow
TC Transfer output correction 
YES/NO settingAllow
MD VG Membrane decrease grid 
voltage correction YES/NO 
settingAllow
MD LD Membrane decrease laser 
power voltage correction 
YES/NO settingInhibit
MD EV Membrane decrease 
environment grid voltage 
correction YES/NO settingAllow
MD DL Membrane decrease 
discharge light quantity 
correction YES/NO settingAllow
MD DL EV Membrane decrease 
environment discharge light 
quantity correction YES/NO 
settingInhibit
TN_HUM Toner density humidity 
correction YES/NO settingAllow
TN_AREA Toner density area correction 
YES/NO settingAllow
TN_LIFE Toner density life correction 
YES/NO settingNormal 
(Inhibit: 1: NO)
Highlighted 
(Allow: 0: YES)Allow
TN_COV Toner density print rate 
correction YES/NO settingAllow
TN_PROCON Toner density process control 
correction YES/NO settingAllow
TN_ENV Toner density environment 
correction YES/NO settingAllow
TN_DRIP Toner density correction, 
unconditional supply YES/
NO settingAllow
TN_SPEND Toner compulsory 
consumption mode YES/NO 
settingAllow
PHT 1Pixel half-tone process 
control correction YES/NO 
settingInhibit
AR_AUTO Auto resist adjustment YES/
NO settingAllow
AR_ERROR Error check YES/NO setting 
during auto resist adjustmentAllow
DM_PHASE Drum phase alignment YES/
NO settingAllow
SENSITIVITY Toner density correction 
YES/NO settingInhibit
PRT_HT Half tone process control 
printer correction feedback 
Enable/Disable settingAllow
Job No Adjustment itemSimulation 
to be used
ADJ 1 Developing doctor gap adjustment
ADJ 2 Developing roller main pole position adjustment
ADJ 4 High voltage 
adjustmentADJ 
4AMain charger grid voltage 
adjustment8-2
ADJ 
4BDeveloping bias voltage 
adjustment8-1
ADJ 
4CTransfer voltage adjustment 8-6
ADJ 12 Scan image focus adjustment (CCD unit position 
adjustment) Display Content Set rangeDefault 
value 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 32 (2) Flowchart of the copy color balance/density adjustment procedures
The necessary work items for each condition are marked with ∗.
START
9Ý
Process correction is forcibly
performed. (SIM 44-6)
Execute the half tone image
correction. (SIM 44-26)
Check the copy color balance/density.
(Manual operation) Text/Printed photo mode
(Test chart UKOG-0162FCZZ/
UKOG-0283FCZZ is used.)
Are the copy
color balance and density
at satisfactory
levels?NoIs the CCD replaced?Yes
Set the ST chart
(UKOG-0280FCZZ) on
the original table.
Perform ADJ 20A
CCD gamma adjustment.
SIM 63-3 (Normal document mode)
Enter the SIM 63-03
mode and press the
EXECUTE key.
Check the copy color balance/density.
(Manual operation) Text/Printed photo mode
(Test chart UKOG-0162FCZZ/
UKOG-0283FCZZ is used.)
(to Next page)
No
Yes
(to Next page): Standard adjustment flow After
replacing
OPC drumAfter
replacing
developer
drumAfter
replacing
transfer beltAfter
replacement
of the image
density sensorAfter cleaning
scanner
(reading)
sectionWhen in
install/repair/check
(without replacing
consumable parts)
OPC drum counter clear 24-7
∗
Developer counter clear 24-5∗
ADJ 5A Color image density sensor
calibration44-13∗
ADJ 7 OPC drum phase adjustment 50-22 (44-31)∗
ADJ 6 Image skew adjustment
(LSU (writing) unit)64-1/61-4
ADJ 10 Image registration adjustment
(Print engine section)50-22 (50-20/
50-21)Simulation Work item JOB No
∗ ∗
When in repair, check/maintenance (with replacing consumable parts) 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 33
4
Change the color balance/density
adjustment factory targets.
(SIM 63-11)
Make the factory color balance target
(when adjusting the copy color
balance/density with SIM 46-24) same
as the service color balance target and
the color balance target when adjusting
the density. (SIM63-8)
NoCan the
copy color balance and
density be adjusted to satisfactory
levels with the fine
adjustment?
Perform the manual adjustment of ADJ 20C
copy color balance, density adjustment. (SIM 46-21)
Perform ADJ 20B copy color balance/
density auto adjustment. (SIM 46-24)
Enter the SIM 46-24 mode and select
A3 (11 x 17) paper. (Auto selection)
(from Previous page)(from Previous page)
: Standard adjustment flow
Perform the initial setup of half tone
image correction. (SIM 44-21)
Execute the half tone image correction.
(Forcible execution) (SIM 44-26)
Check the copy color balance and the density.
(Check in the(Manual operation)
Text/Printed photo mode.)
(Use the test chart UKOG-0283FCZZ.)
Are the copy
color balance and density
at satisfactory
levels?
Were the
copy color balance and
density
customized?
Ye s
Ye s No
No
1
*2
The number of times
is limited to 3 times
Press the EXECUTE key. (The
adjustment pattern 1 is printed.)
Set the adjustment pattern 1
on the original table, select
the FACTORY mode, and
press the EXECUTE key.
(Auto adjustment step 1)
*1
Press the OK key. (The initial
setup of half tone image correction
is automatically performed.)
Cancel SIM 46-24.
3
Use SIM 46-21 to
print the color
balance check
sheet, and check
the patch color
balance of process
black.
/Check the copy
color balance and
density.
Check in the
(Manual operation)
Text/Printed photo
mode.(Use the
test chart
UKOG-0283FCZZ.)Are the
color balance
and density at the
satisfactory
levels?
Were all
the three kinds of
color balance/density adjustment
targets changed?
(SIM 63-11)
No
4
Ye s
No
3
Auto color balance adjustment
service target is set.
Enter the SIM 63-7 mode.
Press the SETUP key.
Set the color patch image (adjustment
pattern) printed in the copy color balance/
density adjustment on the original table,
and press the EXECUTE key.
Press the REPEAT key.
Press the EXECUTE key.
Press the OK key.
Cancel SIM 63-7.
Is the color balance/
density adjustment performed
for each copy mode ?
(Does the user request
that ?)
The copy color
balance and
density adjustment
completed.
Perform the initial setup of half tone
image correction. (SIM 44-21)
Execute the half tone image correction.
(Forcible execution) (SIM 44-26)
Check the copy color balance and density.
Check in the (Manual operation)
Text/Printed photo mode.
(Use the test chart UKOG-0283FCZZ.)
Are the
copy color
balance and the density
in the specified
level ?
Ye s
No
*2
The number of
times is limited to
3 times
1
Perform ADJ 20F copy color
balance/density adjustment
for each copy mode separately.
(SIM 46-10)Ye s
No
Perform the printer color balance
adjustment.
Ye s Ye s
Were
the three kinds of
color balance/density adjustment
targets changed?
(SIM 63-11)Ye s
No
*1: When adjusting to a customized color balance, select the
SERVICE mode.
*2: If a satisfactory result in the copy color balance or the density
cannot be obtained by repetition of this loop of procedures
3 times or more, there may be a problem in the machine conditions.
Check the cause, repair the trouble section, and execute all the
adjustment from the beginning again. 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 34 (3) Copy color balance and density check
(Note)
Before checking the coy color balance and density, be sure to exe-
cute the following jobs.
* Execute the high density image correction (Process correction)
forcibly. (SIM 44-6)
* Execute the half-tone image correction forcibly. (SIM 44-26)
(Method)
Make a copy of the gray test chart (UKOG-0162FCZZ) and a copy
of the servicing color test chart (UK0G-0283FCZZ), and check that
they are proper.
a. Note for execution of the color balance and density check in the
color copy mode
To check the copy color balance and density, use the gray test
chart (UKOG-0162FCZZ) and the servicing color test chart (UK0G-
0283FCZZ). Set the copy density level to 3 in the Text/Printed
Photo mode (Manual), and make a copy.
At that time, all the color balance adjustments in the user adjust-
ment mode must be set to the default (center).
In addition, be sure to use the specified paper for color.
b. Note for checking the monochrome copy mode density
To check the density, use the gray chart (UKOG-0162FCZZ). Set
the copy density level to Manual 3 in the Text/Printed Photo mode
(Manual).
In addition, all the color balance adjustments in the user adjustment
mode must be set to the default (center).
• Check with the gray test chart (UKOG-0162FCZZ)
In the copy density check with the gray test chart, check to insure
the following conditions.
NOTE: For the color (gray) balance, use the servicing color test
chart (UKOG-0283FCZZ) to check.
• Check with the servicing color test chart (UK0G-0283FCZZ)
In the copy color balance check with the servicing color test chart,
check to insure the following conditions.
 20-A CCD gamma adjustment (CCD calibration)
(Normal document copy mode)
This adjustment is required in the following cases:
* When the CCD unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
(1) Note before adjustment
1) Check that the table glass, No. 1, 2, 3 mirrors, and the lens
surface are free from dirt and dust. (If there is some dust and
dirt, wipe and clean with alcohol.
2) Check to confirm that the patches in BK1 and BK2 arrays of
the SIT chart (UKOG-0280FCZZ or UKOG-0280FCZ1) are
free from dirt and scratches.
If they are dirty, clean them.
If they are scratched or streaked, replace with new one.
(2) Adjustment procedures
1) Set the SIT chart (UKOG-0280FCZZ or UKOG-0280FCZ1) to
the reference position on the left rear frame side of the docu-
ment table.
Set the chart so that the lighter density side of the patch is on
the left side.
If the SIT chart is not available, execute SIM 63-5 to set the
CCD gamma to the default. In this case, however, the adjust-
ment accuracy is lower when compared with the adjustment
method using the SIT chart.
NOTE:
• Check to insure that the SIT chart (UKOG-0280FCZZ or
UKOG-0280FCZ1) is in close contact with the document
table.
• UKOG-0280FCZZ is equivalent to UKOG-0280FCZ1.
2) Enter the SIM 63-03 mode and press [EXECUTE] key.
The automatic adjustment is started. During the adjustment,
[EXECUTE] key is highlighted. After completion of the adjust-
ment, [EXECUTE] key returns to the normal display.
NOTE:
Since the SIT chart (UKOG-0280FCZZ) is easily discolored by
sunlight (especially ultraviolet rays) and humidity and tempera-
ture, put it in a bag such as a clear file) and store in a dark
place of low temperature and low humidity.
12 345678910WSHARP GRAY CHART
(Color copy)
Patch 1 is
slightly copied.
Patch 2 is copied.SHARP gray chart
12 345678910WSHARP GRAY CHART
(Black-and-white copy)
Patch 2 is
slightly copied.
Patch 3 is copied.
Patch 1 is not copied.SHARP gray chart
(Color copy)
Serviceman chart (Color patch section)
The densities of patches1–6of
each color are properly balanced.Patch 7 is slightly
copied or not copied.
CLOSE
OC
SIMULATIONNO.63-03TESTSCANNER COLOR BALANCE AUTO ADJUSUTMENT
OC#1:197, #2:185, #3:165, #4:148, #5:117, #6:110,
#7: 88, #8: 75, #9: 55, #10: 45, #11: 38, #12: 29,
#19: 5, #20: 4, #22: 2, #:24: 2
#13: 27, #14: 21, #15: 18, #:16:15, #17: 10, #18: 8,
0
1/4BGR 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 35
 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 users
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 users 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.
SIMULATIONNO.46-24TESTENGINE HALFTONE AUTO ADJUSTMEN T
EXECUTE
0CLOSE
PRESS [EXECUTE] TO PROCON EXECUTIONANDPR INT THE TES T PATC H.
(PLEASE USE SPE CIFIED TYPE OF A3 OR 11”˜17” SIZE PAPER
FOR THIS ADJUSTME N T
0SIMULATIONNO. 46-24TESTENGINE HALFTONE AUTO ADJUSTMENT
PLEASE SELECT THE MODE (FACTORY) OR (SERVICE) AND PLACE
THE PRINTED TEST PATCH ON DOCUMENT GLASS THEN PRESS [EXECUTE].
LIGHTAREAATLEFTSIDEONDOCUMENTGLASS.,
SERVICEFA C T O RYEXECUTE
CLOSE 
						

							MX-2300/2700 N/G  ADJUSTMENTS  6 – 36 5) Press [OK] key on the operation panel.
According to data of this adjustment, the initial setting of the
half tone image correction is performed.
Remark:
After pressing [OK] key, the initial setting of the half tone image
correction is started. During the operation, NOW REGISTER-
ING THE NEW TARGET OF HALFTONE PROCON. is dis-
played. This operation takes several minutes.
After completion of the operation, Please quit this mode is
displayed.
Do not cancel the simulation until Please quit this mode is
displayed.
6) Check the color balance and density.
(Method 1)
Check to insure that the printed color balance check patch
image is within the following specifications.
The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed.
The density level of each color must be almost at the same
level.
Patch B may not be copied.
Patch A must not be copied.
(Method 2)
By printing the color balance adjustment sheet with SIM 46-21
and comparing each process (CMY) black patch color balance
with the black patch, the color balance adjustment can be
checked more precisely.(Method 3)
Use the servicing color test chart (UK0G-0283FCZZ) in the
Text/Printed Photo mode (Manual) to check the copy color bal-
ance and density. (Refer to the item of the copy color balance
and density check.)
When satisfactory color balance and density are not obtained
from the automatic adjustment by selecting the factory target in
procedure 4), change the factory color balance target with SIM
63-11 and repeat the procedures from 1).
If a satisfactory result is not obtained with the above proce-
dure, perform the manual color balance adjustment (ADJ
20C).
Also when the service target is selected in procedure 4) to exe-
cute the automatic adjustment and a satisfactory result is not
obtained, perform the manual color balance adjustment (ADJ
20C).
7) Use SIM 44-26 to execute the half tone image correction.
(Forcible execution)
Enter the SIM 44-26 mode and press [EXECUTE] key.
[EXECUTE] key is highlighted and the operation is started.
It takes several minutes to complete the operation. After com-
pletion of the operation, COMPLETE is displayed.
(Normal end (Auto transition))
CLOSESIMULATIONNO. 46-24TESTENGINE HALFTONE AUTO ADJUSTMEN T
OK
0
CONFIRM THE ADJUSTED PATCH AND PRESS [OK] TO REGISTER THIS PATCH DATA,PR ESS [REPEAT] TO CONTINUE THIS PR OCE DURE.
REPEAT
CLOSE
SIMULATIONNO. 46-24TESTENGINE HALFTONE AUTO ADJUSTMENT
0CLOSE
COMPLETED THIS PROCEDURE.
PLEASE QUIT THIS MODE.
Max
A B C D E F G H I J K L M N O C M Y
Bk
Fig. 1 PG image
Low density High density
1) The max. density
section is not blurred.
Patch A of each of Y, M,
C, and BK are not copied. 2) Patch C or D of each of Y, C, M,
and BK is very slightly copied.
3) Patch for each of C, M, Y, BK
• The patch density is identical between patches or not reversed.
 The patch density is changed gradually.
Max
A B C D E F G H I J K L M N O C M Y
Bk
Low density High density
CMY
mixed
color
1) The max. density
section is not blurred.3) Patch C or D of each of Y, C, M,
and BK is very slightly copied.
2) Patch A of each of Y, M,
C, and BK are not copied.4) Patch for each of C, M, Y, BK
• The patch density is identical between patches or not reversed.
 The patch density is changed gradually.
SIMULATIONNO.44-26TEST
HALF TONE DENSITY CORRECT EXECUTION
EXECUTE
0
CLOSE
TOUGH [EXECUTE] THEN EXECUTION START.
KMYC
SIMULATIONNO.44-26TESTHALF TONE DENSITY CORRECT EXECUTION
[S_VALUE]
#1: 907, #2: 902, #3: 909, #4:921, #5:936
#6: 347, #7:992, #8:1047, #9:1081, #10:1137
#11:1183, #12:1222, #13:1261, #14:1283,#15:1260
1/1EXECUTE
CLOSE0