Ricoh FT5540 Service Manual page 82

31 August 1989
2) Drum Temperature Compensation
The CC/Bias power pack monitors drum temperature through a thermistor (TH-1), and it
increases or decreases the bias voltage to compensate for variations in drum sensitivity that
are induced by temperature changes in the drum cavity. At 30° Celcius (base temperature), no
drum temperature compensation is performed. For each 1° C rise in drum temperature, the
development bias is decreased 6V. For each 1° C fall in drum temperature, the development
bias is increased 6V.
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