1/05
10-12
DocuColor 12/DCCS50
Unswitched AC Power
Reissue
Principles of Operation
Unswitched AC Power
As shown in Figure 1, unswitched Prime AC Power enters the machine and is immediately
routed through the GFI Circuit Breaker and the Noise Filter. The Noise Filter prevents
unwanted signals from entering the machine on the power line. The Noise Filter Output is pro-
vided to the 18 VAC Transformer and to the Choke Coil. The Choke Coil is another type of
noise f
ilt
er and supplies the IDFE LVPS. The output of the 18 VAC Transformer goes back to
the AC Driver PWBA. Figure 2 shows the locations of the assemblies used for Unswitched AC
Power.
Figure 1 Unswitched AC Power Routing
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