Nellcor OXIMAX N-560, Service Manual

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TP26
T POINT M3
1
U31
6N137
1
2
3
4 5
6
7
8
N.C
ANODE
CATHODE
N.C GND
Vout
ENABLE
Vcc
R29
390
C118
10pF
C38
2.2nF
U19
NTV0505
1
2
3
4
5
6
7
8
9
10
11 12
13
14
15
16
17
18
19
20
21
22
GND
NA
VIN
NA
NA
NA
NA
NA
0V
NA
-V NA
NA
+V
NA
NA
NA
NA
NA
NA
NA
NA
N.O.
U14
MAX232S
1
3
13
8
14
7
2
4
5
12
9
11
10
6
C+
C-
R1
R2
T1
T2
V+
C+
C-
O1
O2
I2
I1
V-
TP53
T POINT M3
1
TP25
T POINT M3
1
C19
0.1uF
TP14
T POINT M3
1
U32
ZJYS51R5-M4PA(T)
1
2
3
4 5
6
7
8
L1I
L2I
L3I
L4I L4O
L3O
L2O
L1O
C122
10pF
U30
MAX489E/SO
3
2
4
5
6
7
9
10
12
11
14 1
8
13
_RXENAB
RSOUT
TXENAB
TXIN
GND1
GND2
TXD+
TXD-
RXD+
RXD-
VCC NC
NC
NC
R38
390
+5V
+5VF1
C18
120pF
C21
1uF
TP49
T POINT M3
1 TX422EN
R28
390
Nurse Call 2
+5V
C68
0.1uF
TP52
T POINT M3
1
U13
ZJYS51R5-M4PA(T)
1
2
3
4 5
6
7
8
L1I
L2I
L3I
L4I L4O
L3O
L2O
L1O
TX1F
TP15
T POINT M3
1
R16
390
TX1F_N N.C.
+5V
C24
1uF
U11
6N137
1
2
3
4 5
6
7
8
N.C
ANODE
CATHODE
N.C GND
Vout
ENABLE
Vcc
R17
390
RX1F
+5VF1
RX1
C67
120pF
TP46
T POINT M3
1
TP24
T POINT M3
1
C22
1uF
TP45
T POINT M3
1
COMMON
R30
4.7_2012
Nurse Call 1
U27
6N137
1
2
3
4 5
6
7
8
N.C
ANODE
CATHODE
N.C GND
Vout
ENABLE
Vcc
ITX422EN
TP27
T POINT M3
1
TX1
JDP1
CONN DSUB 15-P
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
R2
4.7_2012
R37
390
C80
0.1uF
C17
120pF
TP48
T POINT M3
1
+5V
C119
10pF
+5VF1
C23
1uF
+5VF1
ITX422EN
C25
0.1uF
TP55
T POINT M3
1
N.O.
+5VF1
R31
4.7_2012
C70
2.2nF
TP50
T POINT M3
1
RX1F
TX1F_N
TP54
T POINT M3
1
COMMON
R15
390
C123
10pF
+5VF1
R39
470
TX1F
+5V
C20
0.1uF
U24
AQW614
1
2
4
3
5
6
7
8
Anode
Cathod
Cathod
Anode
N.O
N.O
N.C
N.C
R1
4.7_2012
TP51
T POINT M3
1
U12
6N137
1
2
3
4 5
6
7
8
N.C
ANODE
CATHODE
N.C GND
Vout
ENABLE
Vcc
N.C.
C81
120pF
C121
10pF
TP44
T POINT M3
1
RX1F
+5VF1
R14
390
+5V
TX1F
C120
10pF
Relay
F2 500mA
Serial
Communication
Connector
Technical Discussion
N-5
60
121
Figure 51: Main PCB Isolation
for Interface Schematic Diagram