Ricoh FT5233 Service Manual page 81

DEVELOPMENT
6.5.3 V Correction
R
V Correction
R
V Level Vrp/Vrg x 100 (%)
R
0 100~84
1 83~58
2 57~41
3 40~28
4 27~0
According to the results of the V
voltage is corrected as shown in the above table.
V correction is also applied to the grid bias voltage.
R
6.5.4 V Data Correction
R
V Data Correction
R
Drum Temperature
Over 25°C
25°C or lower
NOTE: V level (max.)=4
R
If the temperature around the drum is 25°C or less when the main switch is
turned on, the V
R
as shown in the above table.
V data correction is also applied to the grid bias voltage and the low
R
temperature correction is applied to the exposure lamp voltage
simultaneously under this condition.
Development Bias
Correction Voltage
±0V
–40V
–80V
–120V
–160V
–160 V
Grid Bias
Correction
Voltage
–120 V
–80 V
–40V
V
R
pattern detection, the development bias
R
Development Bias
V Correction
R
No correction
V level +1
R
data correction is applied to the development bias voltage
0 27 40
(4)
(3)
Level
2-52
12 February 1992
83
57
100
(1)
(2) (0)
(%)