+5V
+5VD
R277
24.3K
VOLTAGE COMPARATORS
NEGATIVE PEAK DETECTORS
INPUT BUFFERS
PRIMARY
OUTPUT
1
75 OHM
MICROSTRIP
RF RELAY
J17
J18
R262
1.50K
15
16
9
10
14
11
8
12
13
5
6
1
4
7
2
3
K6
MICROSTRIP
75 OHM
R263
37.4
C132
.01UF
C194
47UF
R241
20.0K
R244
649
R311
37.4
+5V
-5V
+5V
+5V
-5V
-5V
CR58
C134
47UF
R268
432
R248
100K
R269
432
C150
47UF
R250
76.8
Q36
R266
1.00K
CR84
R249
13.3K
Q32
R245
2.49K
-5V
+5V
Q35
R251
200
C137
.1UF
TP6
CR62
R260
475K
C140
.1UF
R258
20.0K
R247
2.32K
+5V
-5V
+5V
R275
475K
CR67
C176
.1UF
R284
2.00K
C206
.001UF
R283
2.00K
3
2
1
8
4
U12A
LM393
R276
1.00M
C236
.001UF
3
2
1
8
4
U11A
LF412
-5V
C158
10UF
C159
10UF
+5VD
(P_AND_C)
(P_TEST1)
VREF1
CR66
C157
10UF
C160
10UF
RELAY
(P_AND_C)
(B_AND_C)
(P_AND_C)
(B_AND_C)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
J19
+5VD
VREF4
VREF5
VREF6
ATTEN5
ATTEN6
(B_AND_C)
(B_TEST1)
R278
24.3K
CR65
F4
F2
C4
2
H1
2
H1
3
C4
C2
F4
F2
3
-5V
R282
2.00K
R272
475K
R281
2.00K
C207
.001UF
5
6
7
U12B
LM393
R279
1.00M
5
6
7
U11B
LF412
R280
2M
+5V
Q34
R256
200
C138
.1UF
CR63
R259
475K
C139
.1UF
R257
20.0K
R252
2.32K
+5V
-5V
+5V
+5V
-5V
CR59
C133
47UF
R265
432
R253
100K
R254
76.8
Q37
R264
432
C149
47UF
R267
1.00K
CR83
R255
13.3K
Q33
R246
2.49K
MICROSTRIP
75 OHM
RELAY
CR64
C195
47UF
C131
.01UF
R240
37.4
R242
20.0K
R243
649
R312
37.4
MICROSTRIP
75 OHM
RELAY
J16
R261
1.50K
BACKUP
(RELAY_DRIVER)
B3
2
B3
3
+5V
+5V
+5V
(RELAY_DRIVER)
C143
.01UF
C141
.01UF
C147
.01UF
Q7
R50
10.0K
+5V
-5V
-5V
-5V
RELAY_DRIVER
C213
.1UF
R271
5.00K
C148
.01UF
R270
2.55K
R51
6.49K
-5V
-5V
-5V
-5V
-5V
ATTEN1
C142
.01UF
C144
.01UF
C145
.01UF
C146
.01UF
+5V
-5V
+5V
-5V
+5V
C156
10UF
C155
10UF
C224
10UF
C152
.1UF
C151
.1UF
C237
.001UF
+5V
+5VD
VREF3
(P_TEST3)
(P_TEST4)
(P_TEST5)
(P_TEST6)
(B_TEST3)
(B_TEST4)
(B_TEST5)
(B_TEST6)
ATTEN3
ATTEN4
RELAY_DRIVER
C153
.1UF
C219
.1UF
ATTEN1
H4
H4
H2
H2
2
C2
2
H4
H4
H2
H2
3
VREF1
VREF2
(P_TEST1)
(P_TEST2)
(B_TEST1)
(B_TEST2)
+5VD
ATTEN1
ATTEN2
RELAY
J19
CONNECTS
TO J18
A2
MAIN
BOARD
4
+5V
-5V
+5VD
(P_AND_C)
R232
24.3K
CR45
ATTEN2
+5V
+5V
R238
2.00K
3
2
1
8
4
U10A
LM393
R231
1.00M
VOLTAGE COMPARATORS
3
2
1
8
4
U9A
LF412
+5V
ATTEN2
Q29
C111
.1UF
CR41
R213
475K
C114
.1UF
R211
20.0K
R200
2.32K
NEGATIVE PEAK DETECTORS
+5V
+5V
+5V
-5V
-5V
C108
47UF
R221
432
C212
.1UF
R224
5.00K
R201
100K
R203
76.8
R222
432
C126
47UF
R202
13.3K
R223
2.55K
Q26
R198
2.49K
INPUT BUFFERS
C192
47UF
C106
.01UF
R194
20.0K
R197
649
RF RELAY
R215
1.50K
PRIMARY
BACKUP
OUTPUT
2
75 OHM
MICROSTRIP
MICROSTRIP
75 OHM
RELAY
J14
J15
J13
15
16
9
10
14
11
8
12
13
5
6
1
4
7
2
3
K5
MICROSTRIP
MICROSTRIP
75 OHM
75 OHM
RELAY
(RELAY_DRIVER)
R216
37.4
R193
37.4
CR43
R310
37.4
R309
37.4
-5V
+5V
+5V
+5V
-5V
-5V
CR37
Q30
R219
1.00K
CR81
R206
100K
R208
13.3K
R199
2.49K
-5V
+5V
R204
200
TP5
-5V
-5V
R229
475K
C204
.001UF
R239
2.00K
CR57
C173
.1UF
R237
2.00K
R234
1.00M
C234
.001UF
R235
2M
+5VD
(P_TEST2)
VREF2
R233
24.3K
+5VD
(B_AND_C)
(B_TEST2)
CR44
C218
.1UF
SEE ELECTRICAL PARTS LIST
FOR EARLIER VALUES AND
SERIAL NUMBER RANGES.
+5V
+5V
+5V
+5V
R225
475K
R236
2.00K
C205
.001UF
5
6
7
U10B
LM393
C119
10UF
C223
10UF
C128
.1UF
C127
.1UF
C129
.1UF
C235
.001UF
5
6
7
U9B
LF412
-5V
Q28
R209
200
C112
.1UF
CR42
R212
475K
C113
.1UF
C116
.01UF
C118
.01UF
C121
.01UF
C122
.01UF
C120
10UF
R210
20.0K
R205
2.32K
-5V
+5V
+5V
+5V
+5V
-5V
-5V
CR38
C107
47UF
R218
432
R207
76.8
Q31
R217
432
C125
47UF
R220
1.00K
CR80
C115
.01UF
C117
.01UF
C123
.01UF
C124
.01UF
Q27
C105
.01UF
C193
47UF
R196
649
R195
20.0K
R214
1.50K
ECO 422 Changeover Unit
-5V
-5V
-5V
-5V
-5V
-5V
CHANNELS 1 & 2, INPUTS AND COMPARATORS
PART OF A3 CONNECTOR BOARD
1
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: ......