Power Supply Unit; Construction - Toshiba e-STUDIO163 Service Manual

14. POWER SUPPLY UNIT

14.1 Construction

The power supply unit consists of the AC filter, insulated-side DC output circuit, and high-voltage 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 (Low-voltage 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:
b.Cover switch line:
3) High-voltage output circuit
Generates the output currents/voltages for the charger, developer, transfer and separation biases,
based on the +24V voltage which is generated by the DC output circuit. For details of the high-volt-
age output circuit, see the following.
P.11-5 "11.4 High-Voltage Output Control Circuit"
December 2005 © TOSHIBA TEC
Power supply used in the entire equipment during the image forming pro-
cess. Two kinds of voltage (+5V and +24V) are output when the main
switch of the equipment is turned ON.
Power supply used in the entire equipment during the image forming pro-
cess. It is supplied via the cover switch. This voltage is output only when
both the main switch of the equipment and the cover interlock switches
are turned ON (when the front and ADU covers are closed).
14 - 1
e-STUDIO163/203 POWER SUPPLY UNIT
14