+5VD
VOLTAGE COMPARATORS
NEGATIVE PEAK DETECTORS
INPUT BUFFERS
PRIMARY
9
75 OHM
MICROSTRIP
RF RELAY
J8
J9
R121
1.50K
RELAY
15
16
9
10
14
11
8
12
13
5
6
1
4
7
2
3
18
17
K3
MICROSTRIP
75 OHM
R122
37.4
C54
.01UF
C208
47UF
R100
20.0K
R103
649
R305
37.4
(RELAY_DRIVER_P)
+5V
-5V
+5V
-5V
CR19
R129
2.55K
C56
47UF
R127
432
R107
100K
R109
76.8
Q18
R128
432
Q14
R104
2.49K
-5V
+5V
+5V
-5V
C74
47UF
R108
13.3K
R125
1.00K
CR71
R110
200
Q17
R106
2.32K
C59
.1UF
R117
20.0K
CR23
+5V
-5V
R119
475K
C62
.1UF
R135
475K
R144
2.00K
3
2
1
8
4
U5A
LF412
(P_TEST9)
+5V
C230
.001UF
R145
2.00K
3
2
1
8
4
U6A
LM393
R137
1.00M
CR27
R138
24.3K
B3
4
(P_AND)
B1
4
(B_AND)
B1
4
+5VD
R143
2.00K
C231
.001UF
5
6
7
U6B
LM393
R140
1.00M
R139
24.3K
CR26
B3
4
-5V
VREF9
CR55
C193
.1UF
R118
475K
C61
.1UF
R131
475K
R142
2.00K
C244
.001UF
H3
5
5
6
7
U5B
LF412
R141
2M
+5V
+5V
TP3
C73
47UF
R114
13.3K
R126
1.00K
Q16
R111
2.32K
C60
.1UF
R116
20.0K
CR24
+5V
+5V
-5V
-5V
C236
.1UF
R130
5.00K
CR20
C55
47UF
R124
432
R112
100K
R113
76.8
Q19
R123
432
Q15
R105
2.49K
MICROSTRIP
75 OHM
ATTEN9
RELAY
CR25
C53
.01UF
C209
47UF
R99
37.4
R101
20.0K
R102
649
R306
37.4
H3
5
MICROSTRIP
75 OHM
RELAY
J7
R120
1.50K
BACKUP
OUTPUT
F4
4
(RELAY_DRIVER_B)
(RELAY_DRIVER_P)
(RELAY_DRIVER_B)
(RELAY_DRIVER_P)
-5V
+5V
-5V
C63
.01UF
-5V
+5V
+5V
-5V
-5V
+5V
-5V
CR72
R115
200
C65
.01UF
C71
.01UF
C72
.01UF
C64
.01UF
C66
.01UF
-5V
-5V
+5V
-5V
C69
.01UF
C70
.01UF
C68
10UF
C67
10UF
C245
.001UF
(B_TEST9)
+5V
-5V
+5V
+5VD
C76
.1UF
C75
.1UF
C77
.1UF
C241
.1UF
+5V
+5VD
C228
.001UF
R90
1.00M
R91
24.3K
3
2
1
8
4
U4A
LM393
CR18
(P_AND)
VOLTAGE COMPARATORS
+5V
R72
475K
C36
.1UF
R97
2.00K
3
2
1
8
4
U3A
LF412
+5V
+5V
C48
47UF
R61
13.3K
R78
1.00K
R59
2.32K
Q11
C33
.1UF
R70
20.0K
CR14
NEGATIVE PEAK DETECTORS
+5V
+5V
INPUT BUFFERS
C30
47UF
R80
432
R60
100K
R62
76.8
Q12
R81
432
Q8
R57
2.49K
C28
.01UF
C205
47UF
R53
20.0K
R56
649
(RELAY_DRIVER_P)
RF RELAY
R74
1.50K
RELAY
15
16
9
10
14
11
8
12
13
5
6
1
4
7
2
3
18
17
K2
10
PRIMARY
BACKUP
OUTPUT
75 OHM
MICROSTRIP
MICROSTRIP
75 OHM
RELAY
J5
J6
J4
MICROSTRIP
MICROSTRIP
75 OHM
75 OHM
RELAY
ATTEN10
CR16
R52
37.4
R75
37.4
R304
37.4
R303
37.4
H4
5
(RELAY_DRIVER_B)
-5V
+5V
+5V
-5V
-5V
-5V
CR10
R82
2.55K
C207
.1UF
R83
5.00K
C29
47UF
R65
100K
R77
432
R76
432
R58
2.49K
-5V
+5V
+5V
-5V
CR73
R63
200
TP2
C47
47UF
R67
13.3K
R64
2.32K
-5V
-5V
VREF10
R88
475K
CR54
C190
.1UF
C252
.001UF
H4
5
R94
2M
+5VD
(P_TEST10)
R98
2.00K
R96
2.00K
R93
1.00M
R92
24.3K
B3
4
B3
4
+5V
+5V
+5VD
(B_TEST10)
C229
.001UF
5
6
7
U4B
LM393
CR17
C50
.1UF
C49
.1UF
C52
.1UF
C240
.1UF
(B_AND)
SEE ELECTRICAL PARTS LIST
FOR EARLIER VALUES AND
SERIAL NUMBER RANGES.
NO SECOND RELAY COIL
IN STANDARD INSTRUMENT.
PINS 17 AND 18 NOT CONNECTED.
+5V
R71
475K
C35
.1UF
R84
475K
R95
2.00K
C43
.01UF
C44
.01UF
C42
10UF
C41
10UF
C253
.001UF
5
6
7
U3B
LF412
-5V
+5V
+5V
+5V
-5V
R79
1.00K
CR70
Q10
R68
200
C34
.1UF
R69
20.0K
CR15
C39
.01UF
C45
.01UF
C46
.01UF
C38
.01UF
C40
.01UF
-5V
+5V
-5V
CR11
R66
76.8
Q13
C37
.01UF
Q9
C27
.01UF
C206
47UF
R54
20.0K
R55
649
R73
1.50K
ECO 422 Changeover Unit
-5V
-5V
-5V
-5V
-5V
CHANNELS 9 & 10, INPUTS AND COMPARATORS
-5V
2
PART OF A2 MAIN BOARD
Summary of Contents for ECO 422
Page 4: ......
Page 6: ......
Page 14: ...General Safety Summary viii ECO 422 ...
Page 16: ...Service Safety Summary x ECO 422 ...
Page 17: ...Getting Started ...
Page 18: ......
Page 31: ...Operating Basics ...
Page 32: ......
Page 41: ...Operating Basics ECO 422 2 9 Figure 2 6 Setup for Adjusting R265 the User Level for SX 7 ...
Page 43: ...Specifications ...
Page 44: ......
Page 52: ......
Page 53: ...Theory of Operation ...
Page 54: ......
Page 62: ...Theory of Operation 4 8 ECO 422 ...
Page 63: ...Performance Verification ...
Page 64: ......
Page 84: ...Performance Verification 5 20 ECO 422 ...
Page 85: ...Adjustment Procedure ...
Page 86: ......
Page 88: ...Adjustment Procedure 6 2 ECO 422 ...
Page 89: ...Maintenance ...
Page 90: ......
Page 101: ...Options ...
Page 102: ......
Page 104: ...Options 8 2 ECO 422 ...
Page 105: ...Replaceable Electrical Parts ...
Page 106: ......
Page 140: ...Replaceable Electrical Parts 9 34 ECO 422 ...
Page 141: ...Diagrams Circuit Board Illustrations ...
Page 142: ......
Page 145: ......
Page 147: ... ECO 422 Changeover Unit FRONT PANEL 1 ...
Page 148: ...ECO 422 ...
Page 166: ...ECO 422 ...
Page 167: ...Replaceable Mechanical Parts ...
Page 168: ......
Page 174: ...Replaceable Mechanical Parts 11 6 ECO 422 ...
Page 175: ......
Page 176: ...ECO 422 A1 FIG 1 EXPLODED VIEW A2 A3 A4 ...
Page 177: ......