2H5/2HS
2-2-1
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout
(1) PWBs
Simplex model
Duplex model
Figure 2-2-1 PWBs
1. Control PWB ................................................ Main controller: Controls the software such as the print data processing
and provides the interface with computers.
Engine: Controls printer hardware such as high voltage/bias output con-
trol, paper conveying system control, and fuser temperature control, etc.
2. Power source PWB...................................... After full-wave rectification of AC power source input, switching for
converting to 24 V DC for output. Controls the fuser heater lamp.
3. High voltage PWB........................................ Generates main charging, developing bias and transfer bias.
4. Operation panel PWB .................................. Consists the LED indicators and key switches.
5. APC PWB .................................................... Generates and controls the laser beam.
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Machine inside
Machine left
Machine right
Machine inside
Machine left
Machine right
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