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6 January 1990
The preceding schematic shows how ac power is distributed in this machine.
The ac power from the wall outlet passes through the noise filter, circuit
breaker, and three interlock switches to the transformer and to ac controller
1.
AC controller 1 powers the fusing lamp with direct wall outlet ac power.
The main board controls the fusing lamp through the triac.
The transformer steps the ac power down to 100 volts and then provides it to
the main switch. If the main switch is off, power is applied only to the
anticondensation heater. If it is on, at 100 volts goes to the fan motors, ac
controller 2, and the lamp regulator.
AC controller 2 provides ac 100 volts power to the main motor and
development motor. RA401/402 turn the motors on and off.
1-19
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