Mallinckrodt NELLCOR NPB-195 Service Manual page 84

I84
C11
CR10
0.1U
1N914S
Z5U
C62
1000P
I73
5%
I29
C60 R65
+
10U 4.99K
16V
035262
VDD
+
C61 C63
I75
U14 330P 47U
1 1 5 5 10V
VC VIN
7343
I76
4 4 8 8 VSW
S/S VSW
6 6 2 2 VFB R64
GNDS FB
49.9
7 7 NFB 3 3
GND
LT1373S I85
HIGH
CURRENT
VCC
R63 R66
11.5K
36.5K
TP15
I41
T1 CR8 RAW+10V
R68
LPE-4841
MBRS130
182
C10 2 2 6 6 2 2 1 1
0.1U
C66
Z5U +
22U C67
7 7 3 3 20V VCC I79 22U
I78
20V
7343
7343
5 5 2 2 1 1
CR9
R67
MBRS130 +
49.9
4 4 C64
47U
10V
8 8 7343
C59
0.1U
Z5U
1 1
I77
+
C94
47U RAW-5V
CR30 10V R71
7343
49.9
1 1 2 2
MBRS130
C58
I80
0.1U
Z5U
C78 I244
10U CR19
R78
16V
49.9
1 1 2 2
MBRS130
C65
C84
CR7
I90 0.1U
22U
+
20V
MBRS130
7343
I81 VREF
U8
VIN 8 8 1 1
VIN VOUT
2 2 6 6
+ GND1 GND3
3 3 7 7 C12
GND2 GND4
0.1U
78L05D
Z5U
TP22 +10V
TP16
I82
+5.7V VREF
R70
+
10.0K
C70 3 3
1 1
22U Q4
20V 2N3904S
2 2
7343
3 3
Q5 1 1
2N3904S
TP23
2 2
-5V
C69
22U
+
20V
7343
TP25
-10V
C83
22U
+
20V
Z5U
7343
Front End Power Supply Schematic Diagram
I83
R69
1.0
5%
+
C68
22U
20V
7343
Figure 11-6
11-17