Nellcor NPB-75, Service Manual

Page: 47 / 71

Section 7: Disassembly Guide
7-14
7.9 UPDATING THE SOFTWARE VERSION
Warning: Observe ESD (electrostatic discharge) precautions
when disassembling and reassembling the monitor and when
handling any of the components of the monitor.
1. Open the monitor as described in section 7.2 "Opening the
Monitor Case".
2. Remove the EPROM from its socket (on the CO
2
board) using an
IC extractor. (Refer to Figure 7-14: Replacing EPROM.)
3. Insert the new EPROM.
Note: When replacing the EPROM, be sure it is positioned correctly.
Note: When operating the monitor for the first time after updating the
software version, the warm-up and the self-test periods will be
longer than the usual.
Figure 7-14: Replacing EPROM