Continuous Adjustments Of Density And Registration Sensor - Brother MFC-9130CW Service Manual

1.4.28 Continuous adjustments of density and registration sensor

(Function code 73)
<Function>
This function allows you to perform the following functions consecutively:
Sensitivity adjustment of density sensor (Function code 72), Developing bias voltage
correction (Function code 83), and Adjustment of color registration (Adjustment of inter-color
position alignment) including registration sensor calibration (Function code 66).
<Operating procedure>
(1) Press the 7 and 3 keys in this order in the initial state of the maintenance mode.
"DDRPT2" is displayed on the LCD.
(2) Press the
(3) Press the SET key. "PLS WAIT 72" is displayed on the LCD and each adjustment is
performed in the following order.
1) Sensitivity adjustment of density sensor (Function code 72)
LCD: PLS WAIT 72
2) Developing bias voltage correction (Function code 83)
LCD: PLS WAIT 83
3) Adjustment of color registration (Adjustment of inter-color position alignment)
including registration sensor calibration (Function code 66)
LCD: PLS WAIT 66-1
(4) When all operations are completed, "COMP" is displayed on the LCD. Pressing the
key and Stop key in this order and the machine returns to the initial state of the
maintenance mode.
Note:
- If each adjustment fails, "ERROR**" is displayed on the LCD and the adjustment is
stopped. ("**" indicates the corresponding function code.) If you press the
"ERROR**" displayed, the details of the error are shown.
- If the details of the error indicate one of the following, scratch or dirt on the belt unit or the
drum units may cause the error: "FAILED REGIST", "NG * L:C080 R:M105",
"NG R-L:C030", "NG PWM L120 R180", "NG PWM R-L:080", "NG CNT R100 L100",
"NG S-POSI R:080", "NG SKEW:120", "NG PWM R-P L:080", "NG XMARGIN:M191".
In this case, replace the belt unit and the drum units of all four colors with the ones that do
not have any scratch or dirt, and perform the function from step (1) again. If the function
is completed successfully, mount the removed belt unit and four drum units.
or key to display "DDR" on the LCD.
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