Read Sharp MX-6201N / MX-7001N (serv.man18) Service Manual online
MX-7001N ADJUSTMENTS 6 – 10
7-A
Color image density sensor calibration
1)
Open the front cover (lower).
2)
Turn to the transfer belt tension release cam and release the
primary transfer belt tension.
primary transfer belt tension.
NOTE:
When the transfer belt tension of the primary transfer unit is
released manually, turn on the power again after completion of
the work. (Power OFF-ON) This procedure initializes the trans-
fer roller to return it to the home position.
When the transfer belt tension of the primary transfer unit is
released manually, turn on the power again after completion of
the work. (Power OFF-ON) This procedure initializes the trans-
fer roller to return it to the home position.
3)
Open the right cover unit (secondary transfer unit section).
4)
Open the process front cover, loosen the screw, and pull out
the primary transfer belt unit.
the primary transfer belt unit.
5)
Remove the developing unit (BK) and the OPC drum unit (BK).
6)
Install the image density sensor calibration jig (UKOG-
0318FCZZ) to the sensor housing section.
Engage the pawl (A) in the sensor housing groove, and slide it
to the rear frame side.
0318FCZZ) to the sensor housing section.
Engage the pawl (A) in the sensor housing groove, and slide it
to the rear frame side.
7)
Turn on the power and enter SIM44-13 mode.
8)
Close the right cover unit (secondary transfer unit section).
9)
Close the front cover (lower).
10) Press [EXECUTE] key.
Color image sensor calibration is automatically executed.
When the operation is completed, the adjustment result is dis-
played and [EXECUTE] key returns to the normal display.
When the operation is completed, the adjustment result is dis-
played and [EXECUTE] key returns to the normal display.
If the adjustment is not completed normally, "ERROR" is displayed.
In that case, check the following sections for any abnormality. If any
abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.
* Color image density sensor
* PCU PWB
* Image sensor calibration jig (standard reflection sheet dirt,
In that case, check the following sections for any abnormality. If any
abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.
* Color image density sensor
* PCU PWB
* Image sensor calibration jig (standard reflection sheet dirt,
scratch, discoloration)
NOTE: Store the image sensor calibration jig under low tempera-
ture, low humidity and dark place.
A
A
Display/Item
Content
Adjustment
value range
value range
Default
value
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
DARK
DARK
Color image density sensor
dark-voltage level
dark-voltage level
0 – 255
0
C
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
or when the color sensor
adjustment is completed
SIMULATION NO.44-13
TEST
PATCH SEAL ADJUSTMENT
EXECUTE
PCS CL CARB OUT
108
:
PCS CL DARK
0
:
PCS CL LED ADJ
21
:
1/1
CLOSE
SIMULATION NO.44-13
TEST
PATCH SEAL ADJUSTMENT
EXECUTE
PCS CL CARB OUT
108
:
PCS CL DARK
0
:
PCS CL LED ADJ
21
:
1/1
CLOSE
EXECUTE
EXECUTE
OK
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