Ricoh FT5233 Service Manual page 43

PROCESS CONTROL 12 February 1992
Low Temp.
V Data correction
R
correction
Exposure lamp Development bias
Grid bias voltage
voltage voltage
Over 25°C No correction No correction No correction
25°C or lower Lamp voltage + 1V V level + 1 V level + 1
R R
1.5.2 Low Temp. Correction
When a correction is required under low temperature conditions, the CPU
increases the exposure lamp voltage by 1V.
1.5.3 V Data Correction
R
When the low temp. correction is applied, V data correction is applied
R
simultaneously. The V correction level for both the grid bias voltage and the
R
development bias voltage is stepped up by 1. This means the negative
voltage for the charge grid and the development bias is increased by 40V.
2-14