Welch Allyn Atlas Service Manual page 128

A
Recorder
J1
J9 ESD Ground
AC+12V
1 1
2 2
3
Tab-.187
4
5
6
7
Rec-GND
CON7
4
A D
+3.3V
U2-Reset
R20
10K
J2
Battery
1
Batt-ID
2
3
CON3
+3.3V
Main PCA
Connector
C3
220pF
3
J4
1
D
1
NIBP-Safety 3
3
+3.3V
5
5
7
7
9
9
C2 NIBP-OP
11
11
.047uF
13
13
ETCO2-Tx 15
15
ETCO2-Rx
17
D
17
Spare-2
19
19
NIBP-Data 21
21
NIBP-15mmHg
23
23
LED-Latch
25
25
Vbackup
Video-HSync 27
27
Spare-3
29
29
Power-Sync
31
31
Vbackup 33
33
NIBP-Valve-Close
35
35
Video-VSync 37
37
NIBP-Offset-DAC
C1 39
39
.047uF
41
ac-on 41
43
43
45
D 45
Key-Latch-n
47
47
RS232-CTS 49
49
Rec-Clock
51
51
53
53
HRESET
55
55
SPI-data-in
57
57
59
59
Socket 30x2
D
2
TP14 TP15
C42
.047uF
Vbackup
D
R22
10K U10
1
(pg 1)
2 13
PIC-Data ClkIn/Osc1/RB5 RB0
3 12
On/Off-Key
Clkout/Osc2/RB4 RB1
(Front Panel Key)
4 11
Vpp/MCLR/RB3 RB2 PIC-Clk
TP12 5 10
TC5/TOCK1 RC0
6 9 PIC-audio
On/Off
RC4 RC1
(pg 3)
uP-RESET
7 8
U2-Reset
RC3 RC2
(To U2)
D620361-MX10000
A
B
+5V
C22
.047uF
TP11
D
Serial
TP1 TP2 TP3
Data
Out
14 15 LED-On
SER QA
1
QB
11 2
SRCLK QC
10 3
SRCLR QD
4
QE
12 5 Audio-Shutdown
RCLK QF
EROM-wr
13 6
G QG
7
QH
9
QH
U2
74HCT595
D
2
2
4
4
NIBP-PWM-ADC
6
6
8
8
RS423-Tx
10
10
PIC-Data
12
12 PIC-Data
RS423-Rx
14
14
16 SPO2-Tx
16
SPO2-Rx
18
18
ADC-Clock
20
20
22 FE-Clock
22
SPI-Data-Out
24
24
SPI-Clock
26
26
Batt-ID
28
28
FE-Data
30
30
Rec-Motor-Step
32
32
34
34
PIC-Clk
36
36
38 Speaker-Audio
38
40
40
NIBP2-PW-ADC
42
42
44
44
Video-Data
46
46
48
48
50 Nurse-Call
50
Rec-Data-Latch
52
52
Rec-Strobe
54
54
56 SCL
56
SCD
58
58
60
60
D
Jumper wire
from J4-20 to
J4-55
Recorder Board
Connector
+5V
J7
PIC-Vprog
1
3
5
Rec-Data-Latch
7
Rec-Clock
9
11
Rec+DCV 13
C20
15
.047uF
17
19
21
Rec-GND 23
D
CON24A
R25
D
1.21K
Rec+DCV
TP26
R5
19.6K
HRESET
(To Processor)
Rec-GND
TP16
B
C
EKG-PWM-ADC
EKG-Data-Clock
EKG-ADC-Clock
FE-Data
TP4
Power-Sync
NIBP - Page 2
NIBP-A/D-SelC
NIBP-A/D-SelB
NIBP-A/D-SelA
NIBP-Pump-On
NIBP-ADC-Clock
NIBP-Safety
NIBP-15mmHg
NIBP-Overpressure
NIBP-Valve-Close
CRT Board
NIBP-PWM-ADC
NIBP-Offset-DAC
Connector
+12V
J6
1
Video-VSync
2
Video-HSync
3
4
Video-Data
5
6
CON6
TP17
+3.3V C29
U7 .047uF
AT24C02N-10SC-2.7
R15
+12V
1.96K
5 1
SDA A0
6 2
SCL A1 D
3
A2
TP18
7 U7-wc
WC
R23 R24
1.21K 1.21K
R16
D D
3.48K
+3.3V
D
Speaker Drive
TP22
Rec-Supply-On
2 Rec-Supply-On
Rec-Motor-Step
4
+12V
6
Rec-Strobe C36
8
Rec-Data 4.7uF R17
10
C14 19.6K
12
.047uF R17-1
14 Rec+DCV
16
Print-Temp
18
20 D TP23
R18
22
1.21K
24 Rec-GND
D
TP24
+ C7 C8
330uF .047uF
C
D
EKG - Page6
+5V
6 5
FE-PWM-ADC
U1C
+5V
74HCT04
TP7
D
9 8
FE-Data-Clock
+5V
U1D
74HCT04 TP8
D
11 10
FE-ADC-Clock
+5V
U1E
74HCT04 TP9
D
13 12
FE-Data-In
U1F
+5V
74HCT04
TP10 EKG - Page4
D
3 4
FE-Pwr-Sync
U1B
74HCT04
D
+5V
C23
D
.047uF
SPO2-Rx
2 1
U1A
74HCT04
D
C30
+5V
.047uF
D
+5V Serial IO - Page8
2 1
R6 U8A
1.96K 74HCT04
+5V
D
TP5
3 4
U8B
+5V
74HCT04
TP6
D
5 6
U8C
74HCT04
D
C40 C41
+ CO2 Board
.047uF 1uF
Connector
J3
1
2
3
4
CON4
+5V
1
3
Key-clock
2
U3A
74HCT08
+5V
D
4
6
5
+5V
U3B
74HCT08
D D
9
8
LED-Data
10
+5V
U3C
74HCT08
D
12
11
13
U3D
74HCT08
D
C35
+5V 4.7uF
Audio-Shutdown
ACON
TP25
J11
SP
3 5
+ 1
2
4 8 SM
- 3
U9 CON3
TPA301 4Vpp max.
U9-3
C37
0.1uF
R19
19.6K Initial
Drawn
Rick Myers
Designed
Rick Myers
C38 Checked
L. Phillips
220pF
Approved
Z. Psenicnik
Release For Production
J. Bello
D
E
REV Description ECN/ECO Init Date
A Release to Production 5-39121 JAC 3/15/99
B See ECN worksheet 5-39455 LPP 4/27/99
Mods to U2 clock line, Resp gain
D amp, ECG supply, and NVRAM 5-39821 LPP 6/24/99
pullup
Improvements for ESD, RFI,and
E Fast Transients, Correct 5-39936 LPP 7/9/99
Respiration Diff-Amp Topology
+5V
SpO2 - Page4
9 8
SpO2Out
U8D
74HCT04
D D
+5V
11 10
U8E
74HCT04
RS423Rx D D
+5V
13 12
RS423Tx
U8F
74HCT04
D D
NurseCall
+12V
Fan
Connector
J5
C39
1
.047uF
2
CON2
Front Panel
Display Connector To PIC
On/Off-Key
J8 +5V
CON14AP
Key-Clock-b 2 1
+ +
Key-Latch-n-b
4 3
+ +
Key-Data C5 + C4
6 5
+ +
LED-Data-b 8 7 .047uF 330uF
+ +
LED-On
10 9
+ +
12 11
+ +
LED-Latch-b 14 13
+ +
D D
AC+12V-fuse
Q1
MMBT3906L
2 3 ACON-LED
R1
10K
Q1-e
TP19
R2
TP20
1.96K +3.3V
q2-c
TP13
R3 TP21
10K
Q2-b Q2 R21
1
MMBT3904L 10K
R4
10K
ac-on
Page1
Q3
1 2N7002
Welch Allyn Inc.
Date
Schematic: 620017.dsn
Mar 5, 1999
Mar 5, 1999
Title
Main Board - Model 220
3/16/99
Size
Document Number
3/16/99
620017
C
3/16/99
Date: Tuesday, July 13, 1999 Sheet 1 of 8
E
Ckd
LPP
LPP
LPP
4
3
2
1
Rev
E