Replacement Level; Replacing The Fuse - Nellcor OxiMax N-600x Service Manual

Disassembling the Monitor

Replacement Level

Replacing the Fuse

84
The supported replacement level for the N-600x monitor is to the printed circuit
board (PCB) and major subassembly level. Once a suspected PCB is isolated,
follow the procedures in Disassembling the Monitor on page 85, to replace the
PCB with a known good PCB. Check to see if the symptom disappears and that
the monitor passes all performance tests. If the symptom persists, swap back the
replacement PCB with the suspected malfunctioning PCB (the original PCB
installed when you started troubleshooting) and continue troubleshooting as
directed in this section.
To replace the fuse:
1. Turn the monitor off by pressing the ON/STANDBY button.
2. Disconnect the monitor from the AC power source.
3. Disconnect the power cord from the back of the monitor.
4. Remove the fuse drawer from the power module by pressing down on the tab
in the center and pulling out as shown in Figure 4.
5. Put two (2) new, 5 x 20-mm, slow blow, 0.5-amp, 250-volt fuses in the drawer
and reinsert the drawer in the power entry module.
Figure 4: Fuse Removal