Lexmark C720 Service Manual - Page 215

5024-001 Printer Removal Procedures Precautions to Take Before Maintenance Work Do not implement any operation, removal, or modification and so on, which are not presented in this manual. 1. Turn the printer power Off and unplug the power cable from the outlet prior to starting removals or checks. 2. Prior to starting any repairs, read and understand the warnings in this manual. • High temperature • High voltage • Laser radiation 3. Collect and properly dispose of the waste toner or toner cartridge. 4. Remove the ground wire when removing or replacing the DC power supply. After installation is complete, confirm the ground wire is reconnected to the earth mark . 5. Confirm the direction of all parts and screw length during removal/replacement. 6. Utilize the proper cleaning procedures/solvents during maintenance. 7. Confirm that all parts and covers are properly installed and assembled prior to starting the print test. Repair Information 4-5