2JZ/2JX/2JV/2H7-1
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 and operation panel.
3. Power source PWB (PSPWB) ..................... Generates +24 V DC, +12 V DC and 5 V DC; controls the fuser heaters.
4. ISM PWB (ISMPWB) ................................... Controls the scanner section.
5. ISC PWB (ISCPWB) .................................... Controls the shading correction and AGC of CCD.
6. Inverter PWB (INPWB) ................................ Controls the exposure lamp.
7. CCD PWB (CCDPWB)................................. Reads the image of originals.
8. Main operation PWB (OPWB-M) ................. Controls touch panel and LCD indication.
9. Right operation PWB (OPWB-R) ................. Consists of the operation keys and display LEDs.
10. Left operation PWB (OPWB-L) .................... Consists of the operation keys and display LEDs.
11. Upper operation PWB (OPWB-U)................ Consists of the operation keys and display LEDs.
12. Front operation PWB (OPWB-F).................. Consists of the display LEDs.
13. LCD PWB (LCDPWB).................................. Controls LCD indication.
14. LCD inverter PWB (LINPWB) ...................... Controls LCD back light.
15. Main high voltage PWB (MHVPWB) ............ Generates high voltage for main charger high voltage and developing
bias.
16. High voltage control PWB (HVCPWB)......... Controls high voltage for developing bias.
Machine front
Machine inside
Machine rear
1
10
4
6
13
11
14
3
16
15
21
(40/40 ppm,
50/40 ppm)
21
(25/25 ppm,
30/30 ppm)
17
41
26
25
24 23
34
33
32 31
30
19
42
43
18
20
40
35
36
37
38
39
22
2
7
5
9
8
12
44
45
29 28 27
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