+5VD
VOLTAGE COMPARATORS
NEGATIVE PEAK DETECTORS
INPUT BUFFERS
PRIMARY
7
75 OHM
MICROSTRIP
RF RELAY
J14
J15
R215
1.50K
RELAY
15
16
9
10
14
11
8
12
13
5
6
1
4
7
2
3
18
17
K5
MICROSTRIP
75 OHM
R216
37.4
C106
.01UF
C212
47UF
R194
20.0K
R197
649
R309
37.4
(RELAY_DRIVER_P)
+5V
-5V
+5V
-5V
CR37
R223
2.55K
C108
47UF
R221
432
R201
100K
R222
432
R203
76.8
Q30
Q26
R198
2.49K
-5V
+5V
+5V
-5V
C126
47UF
R202
13.3K
R219
1.00K
CR78
R200
2.32K
Q29
R204
200
C111
.1UF
R211
20.0K
CR41
+5V
-5V
R213
475K
C114
.1UF
R229
475K
R238
2.00K
3
2
1
8
4
U9A
LF412
(P_TEST7)
+5V
C234
.001UF
R239
2.00K
3
2
1
8
4
U10A
LM393
R231
1.00M
R232
24.3K
CR45
B3
4
(P_AND)
B1
4
(B_AND)
B1
4
+5VD
R237
2.00K
C235
.001UF
5
6
7
U10B
LM393
R234
1.00M
R233
24.3K
CR44
B3
4
-5V
VREF7
CR57
C199
.1UF
R212
475K
C113
.1UF
R225
475K
R236
2.00K
C248
.001UF
H2
5
5
6
7
U9B
LF412
R235
2M
+5V
+5V
TP5
C125
47UF
R208
13.3K
R220
1.00K
R205
2.32K
Q28
C112
.1UF
R210
20.0K
CR42
+5V
+5V
-5V
-5V
C238
.1UF
R224
5.00K
CR38
C107
47UF
R218
432
R206
100K
R207
76.8
Q31
R217
432
Q27
R199
2.49K
MICROSTRIP
75 OHM
ATTEN7
RELAY
CR43
C213
47UF
C105
.01UF
R193
37.4
R195
20.0K
R196
649
R310
37.4
H2
5
MICROSTRIP
75 OHM
RELAY
J13
R214
1.50K
BACKUP
OUTPUT
F4
4
(RELAY_DRIVER_B)
(RELAY_DRIVER_P)
(RELAY_DRIVER_B)
(RELAY_DRIVER_P)
-5V
+5V
-5V
C115
.01UF
-5V
+5V
+5V
-5V
-5V
+5V
-5V
CR77
R209
200
C117
.01UF
C123
.01UF
C124
.01UF
C116
.01UF
C118
.01UF
-5V
-5V
+5V
-5V
C121
.01UF
C122
.01UF
C119
10UF
C120
10UF
C249
.001UF
(B_TEST7)
+5V
-5V
+5V
+5VD
C128
.1UF
C127
.1UF
C129
.1UF
C243
.1UF
+5V
+5VD
C232
.001UF
3
2
1
8
4
U8A
LM393
R184
1.00M
R185
24.3K
CR36
(P_AND)
VOLTAGE COMPARATORS
+5V
R166
475K
C88
.1UF
R191
2.00K
3
2
1
8
4
U7A
LF412
+5V
+5V
C100
47UF
R155
13.3K
R172
1.00K
R153
2.32K
Q23
R164
20.0K
CR32
C85
.1UF
NEGATIVE PEAK DETECTORS
+5V
+5V
INPUT BUFFERS
C82
47UF
R174
432
R154
100K
R156
76.8
Q24
R175
432
Q20
R151
2.49K
C80
.01UF
C210
47UF
R147
20.0K
R150
649
(RELAY_DRIVER_P)
RF RELAY
R168
1.50K
RELAY
15
16
9
10
14
11
8
12
13
5
6
1
4
7
2
3
18
17
K4
8
PRIMARY
BACKUP
OUTPUT
75 OHM
MICROSTRIP
MICROSTRIP
75 OHM
RELAY
J11
J12
J10
MICROSTRIP
MICROSTRIP
75 OHM
75 OHM
ATTEN8
RELAY
CR34
R146
37.4
R169
37.4
R307
37.4
R308
37.4
H3
5
(RELAY_DRIVER_B)
-5V
+5V
+5V
-5V
-5V
-5V
CR28
R176
2.55K
C237
.1UF
R177
5.00K
C81
47UF
R171
432
R159
100K
R170
432
R152
2.49K
-5V
+5V
+5V
-5V
CR75
R157
200
TP4
C99
47UF
R161
13.3K
R158
2.32K
-5V
VREF8
-5V
R182
475K
CR56
C196
.1UF
C246
.001UF
H3
5
R188
2M
(P_TEST8)
+5VD
R192
2.00K
R190
2.00K
R187
1.00M
R186
24.3K
B3
4
(B_TEST8)
+5V
+5V
+5VD
C233
.001UF
5
6
7
U8B
LM393
CR35
C102
.1UF
C101
.1UF
C103
.1UF
C242
.1UF
(B_AND)
B3
4
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
R165
475K
C87
.1UF
R178
475K
R189
2.00K
C95
.01UF
C96
.01UF
C94
10UF
C93
10UF
C247
.001UF
5
6
7
U7B
LF412
-5V
+5V
+5V
+5V
-5V
R173
1.00K
CR74
Q22
R162
200
C86
.1UF
R163
20.0K
CR33
C91
.01UF
C97
.01UF
C98
.01UF
C90
.01UF
C92
.01UF
-5V
+5V
-5V
CR29
R160
76.8
Q25
C89
.01UF
Q21
C79
.01UF
C211
47UF
R148
20.0K
R149
649
R167
1.50K
ECO 422 Changeover Unit
-5V
-5V
-5V
-5V
-5V
CHANNELS 7 & 8, INPUTS AND COMPARATORS
-5V
1
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: ......