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Tech Service Bulletin No. A172/A199 – 20 REISSUE + + + +
Page 2 of 3
PROCEDURE continued
Enter the Vref0 values that you recorded for BK, Y, M, and C into SP Adjustments Pg. 12 as illustrated
below:
Toner Sensor Control Target = Vref
BK
2.50
2. If Toner Max M/A Target (SP Adjustment page 4) was previously adjusted, return it to the default value
(1.000). Wait 5 minutes and perform the process control self check.
NOTE: After all the procedures in this bulletin are finished, check the copy quality and adjust Toner Max
M/A Target if necessary. Increasing the value raises the toner density.
3. Turn off Vcnt by number of scans: If the Vcnt correction by number of scans is on, turn it off. (Open SP
Adjustment page 16 and if the data in No.1 is 00001, set it to 00000.)
4. Turn off the Vcnt correction by development gamma. (Open SP Special Feature page 1 and set TC
Correction to OFF.)
5. Manually input the Vcnt compensation value according to the following steps.
•
Open SP Data Output page 1 and record Vcnt0 for each color.
•
Open SP Adjustment page 12 and input Vcnt minus six for each color into the Toner Sensor Gain Data.
Enter the Vcnt0 values that you recorded (minus six) for BK,Y,M,C into SP Adjustment page 12 as illustrated
on the next page.
Y
2.50
M
2.50
C
2.50
Continued...
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