2-2 Electrical Parts Layout
2-2-1
Electrical parts layout
(1) PWBs
20
24
25
16
8
12
1
1.
Main PWB .................................................... Controls the software such as the print data processing and provides the
2.
Engine PWB................................................. Controls printer hardware such as high voltage/bias output control, paper
3.
Power source PWB...................................... After full-wave rectification of AC power source input, switching for
4.
High voltage PWB........................................ Generates main charging, developing bias, transfer bias and cleaning
5.
Operation panel PWB .................................. Controls the LCD display. Consists the LCD display, LED indicators and
6.
Paper exit PWB............................................ Interconnects the engine PWB and the electrical parts (paper exit sec-
7.
Drum relay PWB .......................................... Interconnects the engine PWB and the drum units/developing units.
8.
APC PWB M ................................................ Generates and controls the laser beam. (magenta)
9.
APC PWB C................................................. Generates and controls the laser beam. (cyan)
10. APC PWB Y ................................................. Generates and controls the laser beam. (yellow)
11. APC PWB K ................................................. Generates and controls the laser beam. (black)
12. PD PWB M................................................... Controls horizontal synchronizing timing of laser beam. (magenta)
13. PD PWB C ................................................... Controls horizontal synchronizing timing of laser beam. (cyan)
14. PD PWB Y ................................................... Controls horizontal synchronizing timing of laser beam. (yellow)
21
22
26
17
18
9
10
13
4
3
interface with computers.
conveying system control, and fuser temperature control, etc.
converting to 24 V DC for output. Controls the fuser heater lamp.
bias.
key switches.
tion).
6
23
27
19
7
15
11
14
2
Figure 2-2-1 PWBs
5
Machine left
Machine inside
Machine right
2K8
2-2-1