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POWER SUPPLY UNIT
16 - 1
16. POWER SUPPLY UNIT
16.1 Construction
The power supply unit consists of the AC filter and insulation type DC output circuit.
1. AC filter
Eliminates noise from the outside and prevents the noise generated by the equipment from leaking
to the outside.
2. DC output circuit
Converts AC voltage input from outside to DC voltage and supplies it to each electric part. The DC
voltage is divided into the following two lines.
a. Main switch line: Power supply used in the entire equipment during image forming process.
Three kinds of voltage (+3.3 V, +5.1 V and +12 V) are output when the
main switch of the equipment is turned ON.
b. Cover switch line: Power supply used in the entire equipment during image forming process,
being supplied via the cover switch. Three kinds of voltage (+5.1 V, +24 V
and +36 V) are output only when the main switch of the equipment is
turned ON and the cover interlock switch is turned ON (front cover (lower)
and left lower cover are closed).
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