Welch Allyn Atlas Service Manual

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
Defib Protect
RFI Filtering
Input Buffers
Gain = 9.26
Wilson
Network
Lead Select
Diff Amp
Gain = 1
High Pass (0.05Hz or 0.5Hz)
Low Pass (150Hz)
Gain Stage
Gain = 74
RLD Amp
A/D Inputs
Leads Off
U501 U502 U503 U504 U505 U506 U507 U508
Shield
0.1% 0.1%
Rick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
620002.dsn
5-39118
JAC 3/15/99 LPP
L.Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/17/99
B See ECN worksheet
C
Improvements for ESD
and Fast Transients
5-39456 LPP LPP4/27/99
5-39822 LPP6/23/99LPP
Mods to U2 clock line,
NVRAM pullup
D 5-39934 LPP 7/9/99
620002
D
ECG Amp
C
56Friday, July 09, 1999
Title
Size
Document Number
Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV
Description
ECN/ECO Init
Date Ckd
A Release to Production
U501-6
U502-3
U502-2
U502-5
U503-2
Right-Arm
aVR
aVL
aVF
LA
LA
LL
LL
LA
LL
V+
RA
RA
RA
mux-
mux+
diff+ U508-2
U508-3
Q504-d
diff-
ecg-hp
D503-3
-clamp
+clamp
D502-3 U501-5
U501-2
U503-5
R509-1
R511-1
R513-1
R515-1
Left-Arm
Left-Leg
V-Lead
Right-Leg
U501-3
Q504-s
Q504-g
U502-6
D504-3
V-
U508-5
U508-6
C514-2
diff-out
U508-1
u509-4
D501-3
D505-3
RL-mux
Q501-S
Mux-LdS-A
Sw-MonBw
Mux-LdS-B
Mux-LdS-C
RA
LA
LL
V+
VLdsOff
VLdsOff
VLdsOff
VLdsOff
VLdsOff
f+1.24V
fVcc
fVee
f+5V
vRL
Sw-RLD-LL
Sw-RLD-RL
An-ECG
Sw-RLD-RA
Sw-RLD-LA
Sw-RLD-V
fVcc
fVcc
fVee
fVcc
fVee
fVee
fVcc
EEE
E E E
E
E
E
E
E
E
E
E
EE
E
E
E
E
E E E E E
EEEEE
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
S
S
S
S
S
fVcc
fVee
fVee
fVee
fVee
fVcc
fVee
fVee
fVee
fVcc
fVcc
fVee
fVcc
fVcc
fVcc
fVee
fVcc
fVcc
fVee
fVee
fVcc
E
fVcc
fVee
E
E
R506
10K
C520
.047uF
TP542
R559
22Meg
R517
10K
R507
10K
R555
30.1K
C530
.047uF
C525
.047uF
TP505
+
-
U507B
MC34002
5
6
7
84
R556
10K
C526
.047uF
C506
220pF
+
-
U507A
MC34002
3
2
1
84
TP539
C528
.047uF
N501
LAMP NEON
Q504
2N7002
3
1
2
R544
10K
R501
51.1K
TP501
C532
.047uF
D502
MMBD1503A
1
3
2
C501
220pF
C527
.047uF
TP538
R547
10K
C531
.047uF
R508
10K
C536
.01uF
R549
110K
TP540
TP524
C533
.047uF
TP518
TP530
R552
1K
TP509
R560
22Meg
C529
.047uF
R551
73.2K
TP551
R509
22Meg
TP502
D503
MMBD1503A
1
3
2
N502
LAMP NEON
TP517
R526
10K
C507
220pF
TP533
C517
.01uF
TP521
R502
51.1K
C544
1000pF
C502
220pF
Q506
2N7002
3
1
2
+
-
U501A
MC34002
3
2
1
84
R510
10K
TP562
TP513
TP511
R519
10K
TP558
+
-
U502B
MC34002
5
6
7
84
TP543
R520
1.21K
+
-
U508B
AD712
5
6
7
84
R511
22Meg
R548
1Meg
N503
LAMP NEON
C515
3.3uF
C508
220pF
TP560
TP514
R557
22Meg
R550
19.6K
TP549
TP550
D501
MMBD1503A
1
3
2
R503
51.1K
-
+
U509
LMC7101
4
3
1
25
C542
220pF
TP515
TP503
D504
MMBD1503A
1
3
2
C503
220pF
TP531
TP537
R512
10K
TP527
+
C535
4.7uF
TP512
Q502
2N7002
3
1
2
+ C534
4.7uF
C523
.047uF
TP519
C519
.047uF
R521
10K
R545
10K
TP510
R513
22Meg
TP523
R523
10K
TP536
J501
CON6
1
2
3
4
5
6
R553
100K
TP504
R514
10K
C504
220pF
R565
121K
U504
DG202CSE
3
1
14
16
11
9
6
8
13
4
5
2
15
10
7
S1
IN1
S2
IN2
S3
IN3
S4
IN4
V+
V-
GND
D1
D2
D3
D4
R524
1.21K
TP508
R515
22Meg
D506
BAV99L
1
3
2
TP535
N504
LAMP NEON
D507
BAV99L
1
3
2
TP520
R518
1.21K
+
-
U503A
MC34002
3
2
1
84
R504
51.1K
C543
.047uF
R522
1.21K
TP522
C509
220pF
TP557
TP547
+
-
U501B
MC34002
5
6
7
84
TP526
C510
220pF
+
-
U503B
MC34002
5
6
7
84
C511
220pF
N505
LAMP NEON
TP559
C512
220pF
TP507
C513
220pF
+
-
U508A
AD712
3
2
1
84
D505
BAV99L
1
3
2
R516
10K
+
-
U502A
MC34002
3
2
1
84
R505
51.1K
R530 10K
C505
220pF
R531 10K
C545
1000pF
TP532
R558
22Meg
R533 10K
R527
1K
R535 10K
TP506
C514
0.1uF
Q501
2N7002
3
1
2
TP525
R536 10K
C516
.047uF
R528
51.1K
TP552
R537 10K
TP516
R525
10K
TP548
C518
.047uF
R532 10K
R529 10K
C522
.047uF
C521
.047uF
R534 10K
TP529
U505
4051
13
14
15
12
1
5
2
4
6
11
10
9
3
168
7
X0
X1
X2
X3
X4
X5
X6
X7
INH
A
B
C
X
VDDVSS
VEE
C524
.047uF
R546
10K
TP528
U506
4051
13
14
15
12
1
5
2
4
6
11
10
9
3
168
7
X0
X1
X2
X3
X4
X5
X6
X7
INH
A
B
C
X
VDDVSS
VEE

Welch Allyn Atlas Specifications

General

Brand	Welch Allyn
Model	Atlas
Category	Medical Equipment
Language	English