Heater Lamp Drive Circuit; Dump Heater Power Supply Circuit (Asd/Aud/Cnd/Twd/Sad Models); Stapler Power Supply Circuit - Toshiba DP1600 Service Manual

15.3 Heater Lamp Drive Circuit

This circuit supplies AC power to the heater lamp in the fuser. The heater lamp may be damaged if it is
suddenly supplied with high voltage. To prevent it, the circuit supplies AC power only when the AC voltage
is around 0V. AC power is supplied only when the HT1ON and HT2ON signals (ASD/AUD/CND/MJD
models) are LOW.

15.4 Dump Heater Power Supply Circuit (ASD/AUD/CND/TWD/SAD models)

This circuit outputs the AC power input from the inlet directly to the FUS PWA, thereby supplying power to
the scanner dump heater. AC power is always supplied to the dump heater, regardless of the ON or OFF
state of the main switch.

15.5 Stapler Power Supply Circuit

This circuit supplies AC power to an optionally connected stapler (option). AC power is supplied when the
main switch is ON.
1600/2000/2500 POWER SUPPLY UNIT 15 - 4 December 2000 © TOSHIBA TEC