Sharp DX-C310 / DX-C311 / DX-C400 / DX-C401 (serv.man5) Service Manual ▷ View online
DX-C401 ADJUSTMENTS 4 – 5
ADJ 2
Image density sensor (image
registration sensor) adjustment
registration sensor) adjustment
There are some parts variations in the image density sensor sec-
tion. Therefore, the absolute detection level differs in each
machine. To correct this, calibration is executed.
This adjustment is needed in the following situations:
* When the color image density sensor (image registration sensor
tion. Therefore, the absolute detection level differs in each
machine. To correct this, calibration is executed.
This adjustment is needed in the following situations:
* When the color image density sensor (image registration sensor
F) is replaced.
* When the image registration sensor unit is replace.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
The targets of the adjustment are the color image density sensor
(image registration sensor F) and the black image density sensor
(image registration sensor R). There are following adjustment
methods.
* Color image density sensor (image registration sensor F) calibra-
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
The targets of the adjustment are the color image density sensor
(image registration sensor F) and the black image density sensor
(image registration sensor R). There are following adjustment
methods.
* Color image density sensor (image registration sensor F) calibra-
tion SIM44-13
* Color image density sensor (Image registration sensor F) calibra-
tion value setting (SIM44-61)
* Black image density sensor (image registration sensor R) cali-
bration SIM44-2
NOTE: The color image density sensor detects color image density
and image registration on front frame side, the black image
density sensor detects black image density and image reg-
istration on rear frame side. That is, two functions is
assigned to each one sensor.
Before executing this adjustment, check to confirm the fol-
lowing items.
density sensor detects black image density and image reg-
istration on rear frame side. That is, two functions is
assigned to each one sensor.
Before executing this adjustment, check to confirm the fol-
lowing items.
* Check to confirm that the color image density sensor (image reg-
istration sensor F) and the black image density sensor (image
registration sensor R) are clean.
registration sensor R) are clean.
* Check to confirm that the image density sensor calibration plate
is clean.
* Check to confirm that the transfer belt is clean and free from
scratches.
2-A
Color image density sensor (image
registration sensor F) calibration
registration sensor F) calibration
Perform the color image density sensor (image registration sensor
F) calibration in one of the following methods.
* Color image density sensor (Image registration sensor F) calibra-
F) calibration in one of the following methods.
* Color image density sensor (Image registration sensor F) calibra-
tion value setting (Method by SIM44-61)
When the registration sensor unit is replaced, the calibration
value is set manually with this method. The calibration jig is not
required.
When, however, the color image density senor itself is replaced,
use the calibration jig and execute SIM44-13 to perform calibra-
tion.
When the registration sensor unit is replaced, the calibration
value is set manually with this method. The calibration jig is not
required.
When, however, the color image density senor itself is replaced,
use the calibration jig and execute SIM44-13 to perform calibra-
tion.
* Color image density sensor (Image registration sensor F) calibra-
tion value setting (Method by SIM44-13)
When the color image density sensor itself is replaced, use the
calibration jig and perform calibration with this method.
When the color image density sensor itself is replaced, use the
calibration jig and perform calibration with this method.
(Color image density sensor (Image registration sensor F) cal-
ibration value setting (Method by SIM44-61))
1)
ibration value setting (Method by SIM44-61))
1)
Enter the SIM44-61 mode.
(4.3 Inch LCD model)
(4.3 Inch LCD model)
(8.5 Inch LCD model)
AI
CASE VOLT LOW CL
PTC case
voltage
adjustment
value
voltage
adjustment
value
Color mode
Low speed mode
0 - 255
0
0V - –1000V
0V
AJ
CASE VOLT MID CL
Middle speed mode
0 - 255
0
0V - –1000V
0V
AK
CASE VOLT LOW BW
Black/White mode
Low speed mode
0 - 255
0
0V - –1000V
0V
AL
CASE VOLT MID BW
Middle speed mode
0 - 255
0
0V - –1000V
0V
AM
PEEL VOLT LOW CL
Separation
discharge
adjustment
value
discharge
adjustment
value
Color mode
Low speed mode
51 - 255
200
–50 - –3000V
–2200V
AN
PEEL VOLT MIDDLE CL
Middle speed mode
51 - 255
200
–50 - –3000V
–2200V
AO
PEEL VOLT LOW BW
Black/White mode
Low speed mode
51 - 255
200
–50 - –3000V
–2200V
AP
PEEL VOLT MIDDLE BW
Middle speed mode
51 - 255
200
–50 - –3000V
–2200V
Item/Display
Content
Adjustment
range
Default
value
Actual output
setting range
Default value
of actual
output value
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DX-C401 ADJUSTMENTS 4 – 6
2)
Select an item to be set.
3)
Enter the set value with 10 key.
The set value is the specified on the label attached to the reg-
istration sensor unit.
The set value is the specified on the label attached to the reg-
istration sensor unit.
4)
Press [OK] key. (For the 4.3 Inch LCD model, press the OSA
shortcut key.)
shortcut key.)
(Color image density sensor (Image registration sensor F) cal-
ibration (Method by SIM44-13))
1)
ibration (Method by SIM44-13))
1)
Enter the SIM44-13 mode.
(4.3 Inch LCD model)
(4.3 Inch LCD model)
(8.5 Inch LCD model)
2)
Press [EXECUTE] key.
The shutter plate of the color image density sensor (Image
registration sensor F) is opened, and the message that the pri-
mary transfer unit is removed is displayed.
The shutter plate of the color image density sensor (Image
registration sensor F) is opened, and the message that the pri-
mary transfer unit is removed is displayed.
3)
Open the front cover.
Check to confirm that the belt tension of the primary transfer
unit is released (the separation lever of the primary transfer
unit is under the state shown in the figure).
If the belt tension is not released, turn the separation lever to
the state shown in the figure.
Check to confirm that the belt tension of the primary transfer
unit is released (the separation lever of the primary transfer
unit is under the state shown in the figure).
If the belt tension is not released, turn the separation lever to
the state shown in the figure.
CAUTION: When the transfer belt tension of the primary transfer
unit is released manually, turn on the power again after
completion of the work. This procedure initializes the
transfer roller to return it to the home position.
completion of the work. This procedure initializes the
transfer roller to return it to the home position.
4)
Turn the lock lever until it stops to release the lock, and
remove the waste toner box.
remove the waste toner box.
5)
Open the right door.
6)
Put the lock lever horizontally, release the lock, and pull out the
primary transfer unit until it stops.
primary transfer unit until it stops.
Item/Display
Content
Setting
range
Default
value
A
PCS_CL CARB OUT
Calibration plate sensor
value
value
1 - 255
108
B
PCS_CL LED ADJ
Color sensor light
emitting quantity
adjustment value
emitting quantity
adjustment value
1 - 255
21
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DX-C401 ADJUSTMENTS 4 – 7
7)
Hold the handle, push the lock on the left side of the primary
transfer unit and remove the primary transfer unit.
transfer unit and remove the primary transfer unit.
8)
Install the color image density sensor (image registration sen-
sor F) calibration jig (UKOG-0318FCZZ) to the sensor housing
section.
Engage the calibration jig in the sensor housing groove, and
slide it to the rear frame side.
sor F) calibration jig (UKOG-0318FCZZ) to the sensor housing
section.
Engage the calibration jig in the sensor housing groove, and
slide it to the rear frame side.
9)
Install the waste toner box, and close the right door and the
front cover.
front cover.
10) Press [EXECUTE] key.
Color image sensor (image registration sensor F) calibration is
automatically executed. When the operation is completed, the
adjustment result is displayed and [EXECUTE] key returns to
the normal display.
automatically executed. When the operation is completed, the
adjustment result is displayed and [EXECUTE] key returns to
the normal display.
If the adjustment is not completed normally, "ERROR" is displayed.
When an error occurs, the adjustment result is not revised.
In that case, check the following sections for any abnormality. If any
abnormality is found, repair and execute calibration again.
* Color image density sensor (image registration sensor F)
* PCU PWB
When an error occurs, the adjustment result is not revised.
In that case, check the following sections for any abnormality. If any
abnormality is found, repair and execute calibration again.
* Color image density sensor (image registration sensor F)
* PCU PWB
* Image sensor calibration jig (standard reflection sheet dirt,
scratch, discoloration)
* Image density sensor calibration plate
NOTE: Store the image sensor calibration jig under low tempera-
ture, low humidity and dark place.
2-B
Color image density sensor (image
registration sensor F), black image density
sensor (image registration sensor R)
adjustment
registration sensor F), black image density
sensor (image registration sensor R)
adjustment
NOTE: This adjustment executes automatically at the outset of
registration adjustment operation and process control oper-
ation as well as SIM44-2.
Normally, therefore, it is not required to perform this adjust-
ment. It is performed only when the sensor is replaced or
when the adjustment result is checked.
ation as well as SIM44-2.
Normally, therefore, it is not required to perform this adjust-
ment. It is performed only when the sensor is replaced or
when the adjustment result is checked.
1)
Enter SIM44-2 mode.
(4.3 Inch LCD model)
(4.3 Inch LCD model)
(8.5 Inch LCD model)
2)
Press [EXECUTE] key.
The color image density sensor (image registration sensor F),
the black image density sensor (image registration sensor R)
are automatically adjusted.
After completion of the adjustment, the adjustment result is
displayed and [EXECUTE] key returns to the normal display.
The color image density sensor (image registration sensor F),
the black image density sensor (image registration sensor R)
are automatically adjusted.
After completion of the adjustment, the adjustment result is
displayed and [EXECUTE] key returns to the normal display.
Display/Item
Content
Adjustment
value range
value range
Default
A
PCS_CL
CARB OUT
CARB OUT
Color image density sensor
LED current adjustment
target value
LED current adjustment
target value
1 - 255
108
B
PCS_CL
LED ADJ
LED ADJ
Color image density sensor
LED current adjustment
target value (PCS CL CARB
OUT) registered LED current
level
LED current adjustment
target value (PCS CL CARB
OUT) registered LED current
level
1 - 255
21
Mode
Display/Item
Content
Range
De-
fault
Adjustment
value for
process
control
operation
mode
value for
process
control
operation
mode
A
PCS_CL
LED ADJ
LED ADJ
Color image sensor
light emitting quantity
adjustment value
light emitting quantity
adjustment value
1 - 255
21
B
PCS_K
LED ADJ
LED ADJ
Black image sensor
light emitting quantity
adjustment value
light emitting quantity
adjustment value
1 - 255
21
C
PCS_CL
DARK
DARK
Dark voltage of color
0 - 255
0
D
PCS_K
DARK
DARK
Dark voltage of black
0 - 255
0
E
PCS_K
GRND
GRND
Belt base detection
level when
completion of Item B
adjustment
level when
completion of Item B
adjustment
0 - 255
0
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DX-C401 ADJUSTMENTS 4 – 8
If the adjustment is not completed normally, "ERROR" is dis-
played.
played.
When an error occurs, check the following sections for any
abnormality.
• Color image density sensor (image registration sensor F)
• Black image density sensor (image registration sensor R)
• PCU PWB
• Transfer belt (dirt, scratch)
• Transfer belt cleaner
• Color image sensor calibration plate
abnormality.
• Color image density sensor (image registration sensor F)
• Black image density sensor (image registration sensor R)
• PCU PWB
• Transfer belt (dirt, scratch)
• Transfer belt cleaner
• Color image sensor calibration plate
If any abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.
If an error occurs, the adjustment result is not revised.
ADJ 3
Image skew adjustment
(LSU unit)
(LSU unit)
This adjustment is needed in the following situations:
* When the color shift occurs.
* When the LSU unit is replaced.
* When the LSU unit is removed from the main unit.
* When a color image registration mistake occurs.
* When the unit is installed or when the installing site is changed.
* When the color shift occurs.
* When the LSU unit is replaced.
* When the LSU unit is removed from the main unit.
* When a color image registration mistake occurs.
* When the unit is installed or when the installing site is changed.
(Required depending on the cases.)
* When there is an uneven density area or a difference in color
balance in the main scanning direction (back and forth).
* When the color phase is not matched by the color balance
adjustment.
* When the OPC drum drive unit is replaced.
* When the primary transfer unit is replaced.
The image skew adjustment (LSU unit) is performed by changing
the parallelism of the LSU unit scan laser beams for the OPC drum.
* When the primary transfer unit is replaced.
The image skew adjustment (LSU unit) is performed by changing
the parallelism of the LSU unit scan laser beams for the OPC drum.
Adjustment
value for
process
control
operation
mode
value for
process
control
operation
mode
F
PCS_K
BELT
MAX
BELT
MAX
Maximum value of
belt base detection
level
belt base detection
level
0 - 255
0
G
PCS_K
BELT MIN
BELT MIN
Minimum value of
belt base detection
level
belt base detection
level
0 - 255
0
H
PCS_K
BELT DIF
BELT DIF
Belt base detection
level difference
(Item E - Item F)
level difference
(Item E - Item F)
0 - 255
0
Adjustment
value for
image
registration
operation
mode
value for
image
registration
operation
mode
I
REG_F
LED ADJ
LED ADJ
Image registration
sensor light emitting
quantity adjustment
value F
sensor light emitting
quantity adjustment
value F
1 - 255
56
J
REG_R
LED ADJ
LED ADJ
Image registration
sensor light emitting
quantity adjustment
value R
sensor light emitting
quantity adjustment
value R
1 - 255
56
K
REG_F
DARK
DARK
Image registration
sensor dark voltage
F
sensor dark voltage
F
0 - 255
0
L
REG_R
DARK
DARK
Image registration
sensor dark voltage
R
sensor dark voltage
R
0 - 255
0
M
REG_F
GRND
GRND
Belt base detection
level when
completion of Item I
adjustment
level when
completion of Item I
adjustment
0 - 255
0
N
REG_R
GRND
GRND
Belt base detection
level when
completion of Item J
adjustment
level when
completion of Item J
adjustment
0 - 256
0
O
REG_F
BELT
MAX
BELT
MAX
Maximum value of
belt base detection
level (F side)
belt base detection
level (F side)
0 - 255
0
P
REG_F
BELT
MIN
BELT
MIN
Minimum value of
belt base detection
level (F side)
belt base detection
level (F side)
0 - 255
0
Q
REG_F
BELT
DIF
BELT
DIF
Belt base detection
level difference
(Item O - Item P)
level difference
(Item O - Item P)
0 - 255
0
R
REG_R
BELT
MAX
BELT
MAX
Maximum value of
belt base detection
level (R side)
belt base detection
level (R side)
0 - 255
0
S
REG_R
BELT
MIN
BELT
MIN
Minimum value of
belt base detection
level (R side)
belt base detection
level (R side)
0 - 255
0
T
REG_R
BELT
DIF
BELT
DIF
Belt base detection
level difference
(Item R - Item S)
level difference
(Item R - Item S)
0 - 255
0
U
REG_F
PATCH
(K)
PATCH
(K)
Patch detection level
F for check (K)
F for check (K)
0 - 255
0
V
REG_F
PATCH
(C)
PATCH
(C)
Patch detection level
F for check (C)
F for check (C)
0 - 255
0
W
REG_F
PATCH
(M)
PATCH
(M)
Patch detection level
F for check (M)
F for check (M)
0 - 255
0
X
REG_F
PATCH
(Y)
PATCH
(Y)
Patch detection level
F for check (Y)
F for check (Y)
0 - 255
0
Y
REG_R
PATCH
(K)
PATCH
(K)
Patch detection level
R for check (K)
R for check (K)
0 - 55
0
Z
REG_R
PATCH
(C)
PATCH
(C)
Patch detection level
R for check (C)
R for check (C)
0 - 255
0
AA
REG_R
PATCH
(M)
PATCH
(M)
Patch detection level
R for check (M)
R for check (M)
0 - 255
0
AB
REG_R
PATCH
(Y)
PATCH
(Y)
Patch detection level
R for check (Y)
R for check (Y)
0 - 255
0
Mode
Display/Item
Content
Range
De-
fault
Mode
Error display
Error content
Adjustment
value for
process
control
operation
mode
value for
process
control
operation
mode
BK_SEN_ADJ
_ERR
_ERR
Black image
density
sensor
adjustment
abnormality
density
sensor
adjustment
abnormality
PCS_K LED ADJ error
(The target value is not
obtained after retried
three times.)
(The target value is not
obtained after retried
three times.)
CL_SEN_ADJ
_ERR
_ERR
Color image
sensor
adjustment
abnormality
sensor
adjustment
abnormality
PCS_CL LED ADJ
error (The target value
is not obtained after
retried three times.)
error (The target value
is not obtained after
retried three times.)
BELT_READ
_ERR
_ERR
Transfer belt
surface
reading
abnormality
surface
reading
abnormality
PCS_K GRND error
(The surface detection
level is maximum or
the minimum value
difference is outside a
reference range.)
(The surface detection
level is maximum or
the minimum value
difference is outside a
reference range.)
Adjustment
value for
image
registration
operation
mode
value for
image
registration
operation
mode
REG_SEN_F
_ADJ_ERR
_ADJ_ERR
Registration
sensor F
adjustment
abnormality
sensor F
adjustment
abnormality
REG_F LED ADJ error
(The target value is not
obtained after retried
three times.)
(The target value is not
obtained after retried
three times.)
REG_SEN_R
_ADJ_ERR
_ADJ_ERR
Registration
sensor R
adjustment
abnormality
sensor R
adjustment
abnormality
REG_R LED ADJ
error (The target value
is not obtained after
retried three times.)
error (The target value
is not obtained after
retried three times.)
REG_BELT_F
_READ_ERR
_READ_ERR
F side
transfer belt
surface
reading
abnormality
transfer belt
surface
reading
abnormality
REG_F GRND error
(The surface detection
level is maximum or
the minimum value
difference is outside a
reference range.)
(The surface detection
level is maximum or
the minimum value
difference is outside a
reference range.)
REG_BELT_R
_READ_ERR
_READ_ERR
R side
transfer belt
surface
reading
abnormality
transfer belt
surface
reading
abnormality
REG_R GRND error
(The surface detection
level is maximum or
the minimum value
difference is outside a
reference range.)
(The surface detection
level is maximum or
the minimum value
difference is outside a
reference range.)
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