2LK/2LN/2LM/2LC-2
2-2-1
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout
(1) PWBs
Figure 2-2-1 PWBs
1. Main PWB (MPWB) .............................. Controls the software such as the print data processing and
provides the interface with computers.
2. Engine PWB (EPWB)............................ Controls printer hardware such as high voltage/bias output con-
trol, paper conveying system control, and fuser temperature con-
trol, etc.
3. Power source PWB (PSPWB) .............. After full-wave rectification of AC power source input, switching
for converting to 24 V DC and 12 V DC for output. Controls the
fuser IH.
4. High voltage PWB 1 (HVPWB1) ........... Generates main charging and developer bias.
5. High voltage PWB 2 (HVPWB2) ........... Generates transfer bias and separation bias.
6. ISC PWB (ISCPWB) ............................. Controls the scanner section.
7. CCD PWB (CCDPWB).......................... Reads the image of originals.
8. LED lamp PWB (LLPWB) ..................... Exposes originals.
9. Operation PWB 1 (OPWB1).................. Controls touch panel and LCD indication.
10. Operation PWB 2 (OPWB2).................. Consists of the LED indicators and key switches.
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31
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Machine inside
Machine front
Machine rear
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