Ricoh FT 4215 Service Manual page 16

31 March 1994 AC POWER AND DC POWER DISTRIBUTION
When the Start key is pressed, the main board energizes the main motor
relay (RA402). Then, the main motor and the quenching lamp turn on and the
exhaust blower starts rotating at high speed.
When the main switch is turned off, power is cut off to the main board and to
RA401, and the drum and optional anticondensation heaters are turned on.
The exposure lamp and the fusing lamp power lines are completely
disconnected from the line voltage.
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