Nellcor OxiMax N-550B Service Manual page 135

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FDIGIT 8
Blip Display BarGraph Array
FRE0
FRE1
FDIGIT 7
N-550B
SatSecond Display
FSD1
FSEG a
GLED
FSD2
FSEG b
GLED
FSD3
FSEG c
GLED
FSD4
FSEG d
GLED
FSD5
FSEG e
GLED
FSD6
FSEG f
GLED
FSD7
FSEG g
GLED
FSD8
FDP
GLED
FU1
1
20
FR29 470
a+
a-
2
19
FR30 470
b+
b-
3
18
FSEG a
c+
c-
4
17
FSEG b
d+
d-
5
16
FSEG c
e+
e-
6
15
FSEG d
f+
f-
7
14
FSEG e
g+
g-
8
13
FSEG f
h+
h-
9
12
FSEG g
i+
i-
10
11
FDP
j+
j-
Bar Graph Array
Function Button
+5V
TP33
FR36
SpO2
T POINT F2
4.7K
FSW1
FRB0
FC4
1uF
+5V
TP35
FR38
BPM
T POINT F2
4.7K
FSW3
FRB1
FC6
1uF
+5V
TP37
FR40
Adjust UP
T POINT F2
4.7K
FSW5
FRB3
FC8
1uF
+5V
TP38
FR41
T POINT F2
Adjust DOWN
4.7K
FSW6
FRB4
FC9
1uF
+5V
TP39
FR42
T POINT F2
Sat Second
4.7K
FSW7
FRB5
FC10
1uF
Technical Discussion
Front Panel LEDs
FD7
FR45
1
2
FRC7
270
AC in (Green) Indicator
1N4148
FD1
FR31
ACLED
2.7K_3216(1/4w)
GLED
Low Battery (Orange) Indicator
FD2
FR32
FRC6
820
OLED
Motion (Orange) Indicator
FD3
FR33
FRC5
820
OLED
Sensor Off (Orange) Indicator
FD4
FR34
FRC4
820
OLED
Pulse Search (Orange) Indicator
FD5
FR35
FRC3
820
OLED
Sensor Adjust (Orange) Indicator
FD8
FR46
FRE3
820
OLED
Alarm Silence (Orange) Indicator
FD6
FR44
FRE2
820
OLED
IN-Sensor trend (Green) Indicator
FD9
FR47
FRC2
270
GLED
Figure 57: Front Panel PCB
LED Display and Buttons
Schematic Diagram
133

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