Welch Allyn Atlas Service Manual page 111

A
L201 TP201
220uH
+12V
C229 +
10uF
A
U201
78L05
8
IN OUT
C201
4
.047uF
A
A
P+5V
TP240
C226
.047uF L202
Bead
A
P201-pwr
Primary C232
.047uF R236
Transducer
3.83K
A
0mmHG = 0.5V 2 P201-Out
300mmHG = 4.0V Gain
and
3
Comp P201-6
6
C227
680pF
P201
XFPM-050KPGR-P1
A A
P+5V
Zero Adjust
+/-20mmHg range
R244
38.3K
TP219
R214 R216
10K 19.6K
C207-1
NIBP-Offset-DAC
PWM D/A
R215
76.8KHz
100K + C207 C208
1uF 1uF
A A
2
P+12V
Safety
Transducer
C211
.047uF
A
P202-Out+
U205-3
3
+
P202-2
1
2
-
U205A
MC34072
P202
FPNS-07PGR
C212
A
680pF
1
3
+ -
6
P202-Out-
P202-5
R220
806
5VRef
A
1
Zero R221
3.16K
Offset
C213 R222
.01uF 1K
A A
A
B
P+12V
P+5V
TP206
R201
576
1
C203
R202
P+12V
+ C202 174
4.7uF
TP207 .047uF
U202-3
3
A
+
1
2
-
R203
3.32K U202A
MC34072
A
TP210
P+12V
R204
TP211 150
U202-5 5
+
7
6
-
C204 R205
.047uF 750 U202B
MC34072
A
A A
TP214
R212
56.2K
C206
.022uF P+12V C209
.047uF
A
U204-3 3
+
1
2
-
U204A
R213 MC34072
P+12V 237K
R217
A
5.62K
TP220
U204-2
TP221 TP222
U204-5 C231
5
+
7 .01uF
6
-
+ U204B
MC34072 R218
23.7K
A
U204-7
A
P+.75V
P+12V
C216
.047uF TP224
A
TP226
R227
5.11K
3
+
U206-1
1
2
-
U206A R223 C214 C217
MC34072 21.5K .047uF
.047uF
TP229
A A
U206-2
P+12V
R224
1K
TP232
5
+
U206-7
7
6
-
U206B R225
MC34072 1K
TP233
A
U206-6
P+12V
R226 C215
NIBP-ADC-Clock
TP237 21.5K .047uF
TP238
5
+
U205-7
7
6
-
U205B
MC34072
A
B
C
TP202
R206
1K
C222
.01uF
TP208 TP209
A
R209
1K
C223
.01uF
P+.75V
TP212
TP216
TP217
A
R219
1.96K
U204-1
C228
.047uF
A
NIBP-A/D-SelC
NIBP-A/D-SelB
NIBP-A/D-SelA
A/D Mux
LithMeas
Print-Temp
P4.25V
P.75V
PrimaryPres
SafetyPres
+5V/2
R228
TP227
+5V
1.96K
P+5V
C210 R229
.047uF 1.96K
A A
P+5V
R230 TP230
10K
R231
73.2K
A
C218 +
4.7uF
R232
U207A 10K
74HCT00 U208-2
A
1
3 TP236
R233
2
3.48K
D201-C
A
U207-3
TP234
C
D
R207
+5V
464K
C205
P+12V
R208
.047uF 1.96K
A
U203-3
3
+
1
NIBP-Overpressure
U203-2 2
-
U203A
LM393
+5V
R210
A A
464K
P+12V
R211
1.96K
U203-5 5
+
7
NIBP-15mmHg
U203-6
6
-
U203B
LM393
Over Pressure
Fault Circuit
A A
+12V
R242
10K TP213
Q202-G
TP215
R240
10K
Q201-B Q201 R243
1
NIBP-Safety
MMBT3904L 100K
R241
10K
TP218
1
R246
31.6
NIBP-Valve-Close
A
9
C
10
B
11
A
6 U209
INH
4051
4
X7
2
X6
5
X5
1
X4
12 TP225
X3
15 R235
X2
14 3.48K NIBP PWM
X1
U209-Out U210-2
13 3
X0 X
A/D Converter
C230
.047uF
R237
464K
A
P+5V
TP231
P+12V
C221
U208-3 .047uF
2
+
C219 C224
.047uF 1000pF
3
A -
R234 U210
3.48K MAX941
3
+
1 U208-1 U210-3
2
A -
U208A
A
MC34072 TP235
C220
A
.01uF
2 1
D201 Initial
MMBD1503A
Drawn
Rick Myers
Designed
Rick Myers
Checked
L.Phillips
Approved
Z. Psenicnik
Release For Production
J. Bello
D
E
REV Description ECN/ECO Init Date
A Release to Production JAC 3/15/99
5-39118
B See ECN worksheet 5-39456 LPP 4/27/99
Improvements for ESD
C 5-39822 LPP 6/23/99
and Fast Transients
Mods to U2 clock line,
D 5-39934 LPP 7/9/99
NVRAM pullup
P+12V
P+5V
P+5V
TP203 TP204
5
+
u207-9
7 9
6 8
-
10
U208B
MC34072
U207C
A
74HCT00
A
P+5V
U208-7
12
11
13
R239 U207D
A
1K 74HCT00
+6V
A
Q202
MMFT2N02EL
1
Q202-D
J201
Valve+
2
1
Valve-
2
3
D202 Pump+
4
BAV99L Pump-
5
CON5
Q203
MMDF2N02E
2 4
NIBP-Pump-On
R248 R249
1K 1K
TP228
C225
.047uF
P+5V
A
U210-7
7 4
6
NIBP-PWM-ADC
5
U207B
74HCT00
A
Welch Allyn Inc.
Date
Schematic: 620002.dsn
Mar 5, 1999
Mar 5, 1999
Title
NIBP Electronics
3/16/99
Size
Document Number
3/16/99
C 620002
3/17/99
Date: Friday, July 09, 1999 Sheet 2 of 6
E
Ckd
LPP
LPP
LPP
4
3
2
1
Rev
D