Welch Allyn SureTemp 670 Especificações Página 48
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87654321
D
C
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Title
Number RevisionSize
Orcad D
Date: 7-Apr-2000 Sheet of
File: I:\Documentation\..\55105C.SCH Drawn By:
CONFIDENTIAL AND PROPRIETARY
PROPERTY OF WELCH ALLYN INC.
12
3
12
3
4
123
PROBE OUT = LO
PROBE IN = HI
PROBE CONNECTOR
REVISIONS
REV DESCRIPTION DATE
A INITIAL RELEASE
3303EMB713
GND_DIGITAL MUST BE CONNECTED
TO GND_SIGNAL MANUALLY AT LAYOUT.
MAKE CONNECTION NEAR U2-PIN1.
A/D CONVERTER
REFERENCE
PROBE WARMER
IrDA CLOCK
IrDA
COMMUNICATIONS
O
p
ticaL
Transceiver
Protocol
Converter
DIVIDE BY 4
FET
NOTES:
1
22
22
2
2
4
3
POPULATE ON 678 ONLY
S1 SERVES AS MODE ON MODEL 679
POPULATE R35 WHEN IrDA NOT PRESENT
POPULATE R34 ON 679 ONLY
4
POPULATE R37 WHEN IrDA IS PRESENT
MMBT/MUN
A/D_OUT
PROBE_SW
A/D_TRIGGER
PROBE_SEL
PTBCAL_SEL
RCAL_SEL
HTRPWR
HTRTST
/HTRC
PTBCAL_SEL
PROBE_SEL
MODEL678
/A/D_TRIGGER
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
J1-2B
J1-2A
/HTRQ
J1-3B
J1-3A
X2
X1
SW
S3
S4
WALL_MOUNT
/RESET
/RESET
PROBE_1
PROBE_0
/HTRQ
/DEGC_ONLY
/MODE
/PTIMER
RCAL_SEL
/PWR_ENABLE
COM0
COM1
COM2
/TXD
/RXD
/RXD RD_232
IRDA_VCC
SERSHUTDN
SERSHUTDN
IRDA_CLK
IRDA_DISAB
J1-1A
J1-1B
P01
SECURITY_ON
AVREF_DISAB
P13
P14
AVREF
P30
P32
P37
S20
S19
S18
P94
995
P97
S23
S22
S21
P25
P96
P82
P26
P27
XT2
IRDA3_3
IRLED_PWR
TFDPWR
RD_IR
TD_IR
K
IR_A
O73 I73
CK73
CK37
CK18
REFB2
PRBD
PTBD
CALD
CTRL
TRG
OT
BLA
T2
HTRC2
HTB1
HTB2HTE0
HTB0
RD_232
HORN
E5
E6
CAL
SYNC
P91
/CTS
/RTS
/BLIGHTCTRL
/IRDA
CLK1_8432M
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VREF
VCCVREF
VLC1
VREF
VLC0
BIAS
VCC
VCC
VLC1
VLC0
BIAS
VREF
VCC
P R O B E
H E A T E R
T H E R M I S T O R
P R O B E
C
BCE
C U T H E R E
F O R R E C T A L
C U T H E R E
F O R C A L K E Y
1 2
R1
3M
12
R2
4.7K
12
C2
0.01UF
12
R3
47K
12
R4
47K
1 2
R5
1K
1
2
3
LS1
HORN
21
3
D1
MMBD1203
1 2
R6
47K
21
3
D2
MMBD1203
12
C3
0.1UF
2 1
D3
LED
1
32
Q3
BSS138
12
R7
100K
S21
81
S22
82
S23
83
P9.7/S24
84
P9.6/S25
85
P9.5/S26
86
P9.4/S27
87
P9.3/S28
88
P9.2/S29
89
P9.1/S30
90
P9.0/S31
91
P8.7/S32
92
P8.6/S33
93
P8.5/S34
94
P8.4/S35
95
P8.3/S36
96
P8.2/S37
97
P8.1/S38
98
P8.0/S39
99
P2.5/SI0
100
P2.6/SO0/SB1
1
P2.7/SCK0
2
P7.0/SI2/RXD
3
P7.1/SO2/TXD
4
P7.2/SCK2/ASCK
5
IC(VPP)
6
X2
7
X1
8
VDD
9
XT1/P0.7
10
XT2
11
RESET
12
P0.0/INTP0/TI00
13
P0.1/INTP1/TI01
14
P0.2/INTP2
15
P0.3/INTP3
16
P0.4/INTP4
17
P0.5/INTP5
18
P11.0
19
P11.1
20
P11.2
21
P11.3
22
P11.4
23
P11.5
24
P11.6
25
P11.7
26
AVSS
27
P1.0/ANI0
28
P1.1/ANI1
29
P1.2/ANI2
30
P1.3/ANI3
31
P1.4/ANI4
32
P1.5/ANI5
33
P1.6/ANI6
34
P1.7/ANI7
35
AVDD
36
AVREF
37
P10.0
38
P10.1
39
VSS
40
P10.2
41
P10.3
42
P3.0/TO0
43
P3.1/TO1
44
P3.2/TO2
45
P3.3/TI1
46
P3.4/TI2
47
P3.5/PCL
48
P3.6/BUZ
49
P3.7
50
COM0
51
COM1
52
COM2
53
COM3
54
BIAS
55
VLC0
56
VLC1
57
VLC2
58
VSS
59
S0
60
S1
61
S2
62
S3
63
S4
64
S5
65
S6
66
S7
67
S8
68
S9
69
S10
70
S11
71
S12
72
S13
73
S14
74
S15
75
S16
76
S17
77
S18
78
S19
79
S20
80
U1
UPD78062GF
EBC
12
C4
0.1UF
12
R10
1M
12
R11
1M
1 2
C5
0.01UF
12
R12
1M
12
C6
0.01UF
12
R14
4.7K
1 2
R15
4.7K
1 2
R16
1K
12
R17
4.7K
12
R21
10K
R
4
V+
8
CTRL
5
THR
6
TRG
2
OUT
3
DSC
7
V-
1
U2
TLC555CD
1 2
R23
1K
S0
9
S1
10
XIN
5
BCLK
4
RESET
1
RD_UART
2
TD_UART
3
TD_232
11
RD_232
12
TD_IR
14
RD_IR
15
NC
13
NC
7
NC
6
VCC
16
GND
8
U3
TOIM3000
A
8
K
1
TXD
7
NC/SNS
5
RXD
2
SD
6
VCC
3
GND
4
H1
9
H2
10
U4
TFDS3000
12
R24
3.9
12
R25
15
12
R26
100
12
R27
4.7K
G
1
I
2
O
3
N
4
U6
TC45ER
1 2
C13
0.1UF
1 2
C14
0.1UF
12
C15
0.1UF
12
C16
0.1UF
1 2
R30
10K
1 2
R31
1K
1 2
R32
1K
1
23
Q11
MUN2111
21
3
D4
MMBD1203
12
C19
0.01UF
12
C20
0.01UF
1 2
C22
0.01UF
12
C23
C0805
12
R34
R0805
1 2
L1
10UH
1
2
3
4
5
6
7
8
9
10
11
12
J4
CON12
12
C24
0.01UF
1
2
3
0 0
U7A
74HC00
4
5
6
0 0
U7B
74HC00
9
10
8
0 0
U7C
74HC00
CLK
11
D
12
SD
10
CD
13
Q
9
Q
8
U8B
74HC74
1 2
R36
1M
1
J5
3 A A
B A T T E R I E S
A L K A L I N E
3 . 0 - 5 . 0 V
1
J6
2
1
J2
2
1
J3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
LCD1
12
+
C8
15UF
12
+
C9
15UF
1
23
Q12
MUN2111
CLK
3
D
2
SD
4
CD
1
Q
5
Q
6
G
7
V
14
U8A
74HC74
G
2
O
3
I
1
X2
7.3728MHZ
1
E64
1
E74
1
E75
1
E76
1
E77
1
E78
1
E79
1
E80
1
E30
1
E28
1
E31
1
E81
1
E27
12
C12
0.1UF
1
E83
1
E84
1
E52
1
E13
1 2
C18
C0805
1
E51
1
E48
1
E49
1
E7
1
32
Q2
BSS138
1
32
Q1
BSS138
1
E50
1
E19
1
E20
1
E15
1
E16
1
E87
1
E17
1
E18
1
E67
1
E73
1
E65
1
E66
1
E55
1
E22
1
E24
1
E57
1
E88
1
E33
1
E39
1
E43
1
E47
1
E40
1
E42
1
E41
1
E38
1
E37
1
E32
1
E34
1
E35
1 2
S2
PB
1 2
S1
PB
1
32
4
Q13
BCX69
1
32
4
Q14
BCX69
1 2
+
C21
.33UF
1
E72
1
E70
1
E71
1
E6
1
E54
1
E5
1
E4
1
E2
1
E3
1
E8
1
E9
1
E59
1
E60
1
E82
1
E56
1
E29
1
E26
1
E63
1
E62
1
E89
1
E90
1
E91
1
32
Q9
XX2222
1
23
Q5
XX5087
1
23
Q6
XX5087
1
23
Q4
XX5087
12
S3
SW_REED
2
3
1
S4
SW_SPDT
1
E36
1
E61
1
E68
1
E58
12
+C25
1UF
12
R8
12.1K
0.1% 100PPM 1/8W
12
R13
11.55K
0.05% 25PPM RN55
12
+C17
10UF
12
+C11
10UF
1 2
+
C10
10UF
1 2
R35
RES 0805
C
D
B
G
E
S
12
R37
100
12
+
C1
1.0UF
1
E92
1
23
Q15
MUN2111
G
1
I
2
O
3
N
4
U9
TC45ER
12
R28
16K
1
E45
/HOST_WAKEUP
B
B
B
A
A
A
1
2
3
1
2
3
WELCH ALLYN
THIS INFORMATION IS THE
PROPERTY OF WELCH ALLYN
FILE:
APPROVAL
CHECK
PROJ. MGR.
Q.A.
MFG. ENG.
REL. AUTH.
DATE
E Rivera
1 OF 1
AND IS NOT TO BE DISCLOSED
OR UTILIZED WITHOUT WRITTEN
IT IS SUBMITTED IN CONFIDENCE
PERMISSION
SCHEMATIC, 678/679 PCB
55105-0000
C
ECO
2835 11/7/96
12
13
11
7 14
U?D
00
B
REPLACED x1 RESONATOR WITH CRYSTAL
ADDED CAPACITORS C26 AND C27
REMOVED P11.4 FROM GROUND
CONNECTED P11.4 TO P11.5
2835-10
1/30/97
MOVED ONE SIDE OF R1 FROM Q5 EMITTER TO VCC
CHANGED VALUE OF R1 FROM 470K TO 3M
6/10/983192C
12
C27
22 pF
12
C26
22 pF
X1
4.9152MHz
3
2
1
4
4
- SureTemp 1
- Technical Manual 1
- TABLE OF CONTENTS 3
- LIST OF FIGURES 5
- WARRANTY 6
- SPECIFICATIONS 7
- TERMINOLOGY 8
- Basic System Description 9
- 1-2 Welch-Allyn, Inc 10
- Self Tests 11
- Battery Life 12
- Normal Mode 13
- Monitor Mode 14
- Biotech Mode 15
- 1-8 Welch-Allyn, Inc 16
- Operational Characteristics 17
- Model 678/SureTemp 17
- Model 679 1-9 17
- 1-10 Welch-Allyn, Inc 18
- 2. PREVENTIVE MAINTENANCE 19
- 2-2 Welch-Allyn, Inc 20
- 3. CALIBRATION TESTING 21
- 3-2 Welch-Allyn, Inc 22
- 4. THEORY OF OPERATION 23
- Probe Switch 24
- Power Supply 25
- 4-4 Welch-Allyn, Inc 26
- Rthermistor 27
- ()PWthermistor ( )Rhical 27
- Probe Identification Logic 28
- Theory of Operation 29
- Model 679 4-7 29
- Other Components 30
- Model 679 4-9 31
- 4-10 Welch-Allyn, Inc 32
- 5. TROUBLESHOOTING 33
- Equipment Required 34
- Troubleshooting Table 35
- 5-4 Welch-Allyn, Inc 36
- 70898-0000A 36
- Troubleshooting 37
- Model 679 5-5 37
- 5-6 Welch-Allyn, Inc 38
- Model 679 5-7 39
- Field Serviceable Repairs 40
- Field Serviceable Parts 40
- Model 679 5-9 41
- 5-10 Welch-Allyn, Inc 42
- Model 679 5-11 43
- Thermometer Disassembly 44
- Model 679 5-13 45
- Figure 8 - Main PCA 46
- Model 679 5-15 47
- WELCH ALLYN 48
- 5-16 Welch-Allyn, Inc 49
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