Power Supply Unit - Toshiba e-STUDIO2006 Service Manual

3.16 Power Supply Unit

3.16.1 Composition
The power supply unit consists of the AC filter, insulation type DC output circuit and heater lamp control
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 circuits
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. Door switch line:
3. Heater lamp control circuit
TRC (Triac) is driven by the heater control signal (HTR1ON) from the MAIN board and then AC
power is supplied to each heater lamp in the fuser unit.
Notes:
The Power Supply Unit does not supply power to the Damp heater.
Damp heater power is supplied from the FUS board.
e-STUDIO2006/2306/2506/2007/2307/2507/2303A/2303AM/2803AM/2309A/2809A
OUTLINE OF THE MACHINE
Power supply used in the entire equipment during image forming process.
Two kinds of voltage (+24VS, +24VA) are output when the main switch of the
equipment is turned ON.
Power supply used in the entire equipment during image forming process,
being supplied via the interlock switch. One kind of voltage (+24VD) is output
only when the main switch of the equipment is turned ON and two doors
(toner supply cover and right cover) are closed.
+5VD is generated for main board.
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