2WA/2NJ/2RK
3-12
1. Main PWB ............................................. Controlling the entire software to control the interface to the PC
and network and image data process, etc.
2. Engine PWB.......................................... Controlling the hardware such as electric parts drive, high volt-
age, bias output, paper conveying, fuser temperature, etc.
3. Power source PWB............................... After full-wave rectification of AC power source input, switching
for converting to 5 V DC for output.
4. Main high-voltage PWB ........................ Generating the main charger high-voltage, the developer bias, the
transfer bias and the separation bias.
5. CCD PWB ............................................. Scanning the original image.
6. LED PWB.............................................. Exposing originals.
7. Front PWB ............................................ Consists of wiring relay circuit between engine PWB and drum
units, developer units, eject unit.
8. Feed PWB............................................. Consists of wiring relay circuit between engine PWB and fuser
drive unit, paperconveying section, drive section, relay PWB.
9. Relay PWB............................................ Consists of wiring relay circuit between feed PWB and paper con-
veying unit.
10. LSU relay PWB ..................................... Consists of wiring relay circuit between engine PWB and laser
scanner unit.
11. APC PWB ............................................. Emitting and controlling the laser beam.
12. PD PWB................................................ Controlling the synchronous lateral laser beam.
13. Drum PWB ............................................ Storing the drum unique data in an EEPROM.
14. IH PWB ................................................. Controlling the fuser IH and the fuser heater.
15. RFID PWB ............................................ Reading the toner container information.
16. KUIO relay PWB ................................... Consists of wiring relay circuit between main PWB and FAX PWB.
17. PF main PWB ....................................... Controlling the electric parts in the Large capacity feeder.
18. BR main PWB ....................................... Controlling the electric parts in the BR.
19. JS main PWB........................................ Controlling the electric parts in the JS.
20. DP relay PWB ....................................... Relay of image data.
21. Operation panel main PWB .................. Controlling the touch panel and LCD indication.
22. Operation panel key PWB..................... Consists of the LED indicator and the key switches.
23. USB hub PWB ...................................... USB slot distribution.
24. Fuser high-voltage PWB ....................... Discharging the fuser belt.
25. WiFi PWB.............................................. Wireless LAN connection (optional; except 120V model)
26. Current PWB* ....................................... Converts the AC current input to the analog signal and delivers.
27. Fuser PWB............................................ Consists of wiring relay circuit for sensors.
28. NFC PWB ............................................. Antenna circuit for wireless communication.
*: 100V: 70 ppm model
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