Lexmark W812 Service Manual page 53

4022-XXX
Engine Card Assembly - Controls all the printer operations according to signals from RIP
card sensors and switches. The engine card has 7 major functions:
1. Communication with RIP card
2. Communication with optional feeders
3. Communication with optional duplex assembly
4. Information reception from printer sensors and switches
5. Printhead, fuser, and main drive assembly control
6. Control of print process
7. Distribution dc power from LVPS to other electric parts
Tray 1 Paper Size Card Assembly - Contains a size switch to set the size of paper
supplied in tray 1.
1-33
General Information