Lexmark C720 Service Manual page 237

5024-001
After performing the reverse removal steps:
1. Reconnect the power supply cable.
2. Turn the printer On.
3. Execute the test print in service mode. See
on page
4. Confirm printer operation and print quality.
WARNING: When replacing the IOD1 P.W.B., use caution against
electrostatic discharge.
3-5, for more information.
"Diagnostic Mode"
Repair Information
4-27