LI-COR LI-820 - Page 74

Section 5
5-2 Maintenance
Source
Detector
Air In Air Out
PCBPCB
Optical Bench
Hose Barb
Bev-a-line Tubing
Ribbon Cable
Connector
4. There are four screws on the source and detector circuit boards that must be removed.
Remove the four screws in the corners of the boards, as shown below (they are slightly
larger than the other four screws). Do not remove the remaining four screws.