2JL/2JJ/2JG/2JD-1
2-2-1
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout
(1) PWBs
Figure 2-2-1 PWBs
1. Engine PWB (EPWB)................................... Controls the other PWBs, electrical components and optional devices.
2. Main PWB (MPWB) ..................................... Controls the image processing, operation panel and laser scanner unit.
3. Scanner PWB (SPWB) ................................ Controls the scanner section.
4. SHD PWB (SHDPWB) ................................. Controls the shading correction and AGC of CCD.
5. CCD PWB (CCDPWB)................................. Reads the image of originals.
6. Inverter PWB (INPWB) ................................ Controls the exposure lamp.
7. Right operation PWB (OPWB-R) ................. Consists of the operation keys and display LEDs.
8. Left operation PWB (OPWB-L) .................... Consists of the operation keys and display LEDs.
9. LCD PWB (LCDPWB).................................. Controls touch panel and LCD indication.
10. Power source PWB (PSPWB) ..................... Generates 3.3 V DC, 5V DC and 24 V DC power source. Controls the
fuser heater 1, 2 and 3.
11. Motor relay PWB (MRYPWB) ...................... Consists the wiring relay circuit between engine PWB and drum motors
and middle transfer motor.
12. Developing PWB M (DEVPWB-M)............... Consists of relay circuit and EEPROM. (Magenta developing unit)
13. Developing PWB C (DEVPWB-C) ............... Consists of relay circuit and EEPROM. (Cyan developing unit)
14. Developing PWB Y (DEVPWB-Y)................ Consists of relay circuit and EEPROM. (Yellow developing unit)
15. Developing PWB BK (DEVPWB-BK)........... Consists of relay circuit and EEPROM. (Black developing unit)
16. Drum PWB M (DRPWB-M) .......................... Drum individual information in EEPROM storage. (Magenta drum unit)
17. Drum PWB C (DRPWB-C)........................... Drum individual information in EEPROM storage. (Cyan drum unit)
18. Drum PWB Y (DRPWB-Y) ........................... Drum individual information in EEPROM storage. (Yellow drum unit)
Machine front
Machine inside
Machine rear
7
4
5
9
27
26
29
28
30
24
10
25
20
21
22
23
31
32
19 18 17 16
12131415
1
8
3
6
2
33
11
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