Figure 36: User Interface Pcb Schematic Diagram (Sheet 3 Of 3) - Nellcor OxiMax NPB-40 Service Manual

NPB-40
3V0
U12 NJU6432BF
1 MUX01_35
SEG1
58 2 MUX02_36
VLCD SEG2
3 MUX03_37
3V0
SEG3
56 4 MUX04_38
V D D SEG4
5
MUX05_39
C53
SEG5
+ 6 MUX06_40
C54
47uF SEG6
7 MUX07_41
SEG7
0.1uF
10v 8 MUX08_42
SEG8
9 MUX09_43
R78
SEG9
59 10
MUX10_44
294K V S S SEG10
11 MUX11_45
SEG11
12 MUX12_46
SEG12
13 MUX13_47
SEG13
57 14 MUX14_48
INH SEG14
15 MUX15_49
SEG15
61 16
MUX16_50
C66 2 LCD_CLK
SCL SEG16
62 17 MUX17_51
2 LCD_DAT
10uF DN SEG17
60 18 MUX18_52
2 LCD_CE1
CE SEG18
19 MUX19_53
SEG19
20
MUX20_54
SEG20
21 MUX21_55
SEG21
24 22 MUX22_56
NC SEG22
23 MUX23_57
SEG23
25 MUX24_58
SEG24
26 MUX25_59
SEG25
27 MUX26_60
SEG26
28 MUX27_61
SEG27
55 29 MUX28_62
OSC SEG28
30 MUX29_63
SEG29
31
MUX30_64
R59
SEG30
C57
32 MUX31_65
SEG31
71.5K 470pF 33
MUX32_66
SEG32
34 MUX33_67
SEG33
35 MUX34_68
SEG34
36
SEG35
37
SEG36
38
SEG37
39
SEG38
40
SEG39
41
SEG40
42
SEG41
43
T41
SEG42
44
SEG43
45
SEG44
46
SEG45
47
SEG46
48
SEG47
49
SEG48
50
SEG49
51
SEG50
52
SEG51
53
LCD1_TEST 1
SEG52
T12
54
SEG53
64
LCD1_COM1 1
COM1
63
COM2
LCD1_COM2
T32
R79
10K
2 BK_LIGHT
C70 C71
22pF 22pF
DO NOT
INSTALL
1
T11
T13
2
3
1 LCD1_COM1
4
LCD1_COM2
5
6
7
8
9
10
11
12
13
14
15
2
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38 2 IR_BRD
2 IR_RX
39
2 IR_TX
40
J8
LCD_CONN
T40 T38 T36 T37
T39 T14
22pF
12V0
T34
R63
274R
J9
Backlight
2 PWR_BZN
Q5 2 BZ_FRQ
BSS138
1
2 BZ_CSN
2 BZ_SDAT
2 BZ_SCLK
3V0
T22 T23
Q2
IRLML6401 R53
2 3
47.5 ohm
1/8w
C52
R54
1M
0.1uF
PWR_IRDAN
R75
100R
Q6
1
BSS138
T24
R55 R56
1 ohm
1 ohm
R57
C55 C56
1/8w 1/8w
10K
0.1uF 0.1uF T26
T27
T28 T29
T30
1 15
RESET RD_IR
2 14
BR/D TD_IR
3 13
RD_232 S2
4 12
TD_232 S1
5 11
Vcc_SD N/C
6 10
X1(Xtal_In) RD_LED
7 9
X 2 TD_LED
R58 100k
U14
TOIM4232
Y3 3.6864MHz
C58
C59
22pF
12V0
Q3 T31
IRLML6401
2 3
R60
C62
1.0M
0.1uF
T33
R61
U16
1.0M
Q4 TLE2021/SO
1.5v
1 BSS138 3
+
6
R65
2
-
140K
U17
1 5
CS P A 0
3 6
SI PW0
2 7
SCK PB0 R67
24.9K
4 8
V S S V D D 3V0
MCP41050-I/SN
C64
0.1uF
Technical Discussion
+
C51
4.7uF
T25
1
IRED_AN
2
IRED_CA
3
T X D
4
RXD
5
N/C
7
SC
U13
TFDU4100
Y4
0R
Audio Transducer
R64
T35
Figure 36
User Interface PCB
Schematic Diagram
(Sheet 3 of 3)
101