Novametrix Medical Systems OXYPLETH 520A, Service Manual

Page: 52 / 133

Section 10
Maintenance
42
Model 520A Service Manual 5693-90-01
PRELIMINARY
1. Turn the Model 520A Off. Disconnect the line cord and sensor. Remove the
four cover screws from the bottom cover. Holding both case halves together,
flip the monitor right-side up.
2. Lift the top cover from the monitor. Use a gentle rocking motion to lift first
one side and then the other side a little at a time. Set the Red Alert Bar lens
aside with the cover for safe keeping.
3. Unplug P102 The Power Supply connector from the 2471 Main Board,
disconnect P109 (Speaker), P108 (Sensor), P104 (Keypanel), P106
(Backlight), P105 (Alert Bar), and P103 (Display). Unscrew 2471 Main
Figure 8. Removing the Top Cover
Figure 9. Monitor Assembly
Remove Line Cord
Remove these
(4) four screws.
P102 Power Supply
P109 Speaker
P108 Sensor
P104 Keyboard
P106 Backlight
P105 Alert Bar
P103 Display
2471 Main Board