MX-M850 (serv.man36). Section 6 Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 9

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MX-M1100  ADJUSTMENTS  6 – 9
 
2-C
Toner density control reference value 
setting
This adjustment is required in the following case:
* When developer is replaced.
Note:
Never execute this adjustment unless developer is replaced. 
Select the most suitable simulation mode according to the mainte-
nance case. 
[Setting with the Sim. 25-2 mode (when replacing developer
only)]
1)
Enter an input of Sim. 25-2 with the front cover open.
2)
After entering the input, close the front cover (a).
3)
Press [EXECUTE] key.
[EXECUTE] key is highlighted, and the developing roller
rotates. The toner density is detected by the toner density sen-
sor, and the output value is displayed. 
After execution of the above operation for 3min 30sec, the
average value of the toner density sensor detection levels is
set (saved) as the reference toner density control value. 
After completion of the reference toner density control value
setting, [EXECUTE] key returns to the normal display. This
indicates completion of the setting. 
[Setting with the Sim. 25-6 mode (replacement of developer
and the developing unit or installation of the machine)]
1)
Open the front cover, and enter the Sim.25-6 mode. 
2)
Close the front cover.
3)
Press [EXECUTE] key.
[EXECUTE] key is highlighted, and the developing roller is
rotated. The toner density sensor detects the toner density,
displaying the output value.
The above operation is performed for 4min 30sec, and the
average value of the toner density sensor detection levels is
set (saved) as the reference toner density control value.
After completion of the reference toner density control value
setting, [EXECUTE] key returns to the normal display, showing
completion of the setting operation.
If this operation is interrupted before [EXECUTE] key returns
to the normal display from the highlighted display (dark), the
adjustment result is not reflected. 
When replacing 
developer in 
normal 
maintenance. 
When replacing 
the developing 
unit and 
developer. 
When installing the 
developing unit for 
the first time in 
installation of the 
machine. 
Sim. 25-2
Sim. 25-6
0
AUTOMATIC DEVELOPER ADJUSTMENT
EXECUTE
HUMIDITY AREA
15
:
1/1
SIMULATION NO.25-02
TEST
CLOSE
DEVE REFERENCE
128
:
CONTROL VOLTAGE
128
:
a
0
AUTOMATIC DEVELOPER ADJUSTMENT
EXECUTE
HUMIDITY AREA
10
:
1/1
SIMULATION NO.25-02
TEST
CLOSE
DEVE REFERENCE
50
:
CONTROL VOLTAGE
50
:
:
0
AUTOMATIC DEVELOPER ADJUSTMENT/ATC CALIBLATION
EXECUTE
TONER SENSOR MONITOR
STANDARD DENSITY ADJUSTMENT
1/1
SIMULATION NO.25-06
TEST
CLOSE
HUMIDITY AREA :
STD HUMIDITYAREA
0
:
DEVE REFRENCE :
STANDARD VREF
128
:
CONTROLVOLTAGE :
STANDARD VCON
128
:
AUTODEVEADJUSTMENT
AUTO ATC DENSITY ADJUSTMENT SETUP
HUMIDITY AREA
0
:
HUMIDITY AREA
0
:
DEVE REFRENCE
128
:
VREF SENS㧔ATC㧕
128
:
CONTROLVOLTAGE
128
:
VCON SENS㧔ATC㧕
128
:
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