LM358
7905
5.00K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J20
VOLTS0
VOLTS1
BUF0
BUF1
SELECTOR SWITCH FARM
+5V
+5V
+5V
C153
.1UF
C155
.1UF
C157
10UF
+5V
+5V
+5V
+5V
C146
.1UF
C147
.1UF
C149
.1UF
C151
.1UF
-5V
-5V
-5V
-5V
MOUNTING
HOLES
C148
.1UF
C150
.1UF
C152
.1UF
C154
.1UF
-5V
-5V
ATT_SW
5
6
7
U20B
LM358
R333
10.0K
C156
.1UF
C158
10UF
REFERENCE VOLTAGES
ATTEN_M
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S14
MODE
MODE
ATT_SW
E1
4
VOLTS2
VOLTS3
VOLTS4
VOLTS6
VOLTS5
BUF2
BUF3
BUF4
BUF5
BUF6
-5V
+5V
MODE
ATT_SW
R296
499
R297
499
ATTEN_M
FOR TEST ONLY
VREF7
ATTEN7
C2
1
F2
1
B4
4
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VOLTS6
VREF1
ATTEN1
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S7
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S8
ATTEN_M
B2
4
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VOLTS6
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS6
VOLTS5
MODE
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S2
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S1
ATTEN_C
BUF0
BUF1
BUF2
BUF3
BUF4
BUF5
BUF6
BUF0
NTSC BLACK BURST
+5V
-5V
R254
100
3
2
1
8
4
U21A
LM358
R334
10.0K
R267
2.21K
5
6
7
U23B
LM358
R290
10.0K
ATTEN_C
+5V
VCC
+5VD
VIN
1
GND
3
NC
5
VOUT 2
NC
4
NC 8
NC 6
NC 7
U31
1403
-2.5V_REF
+5V
-5V
R264
3
2
1
8
4
U20A
LM358
R270
1.96K
R273
2.05K
R262
10.00K
R263
10.00K
R268
10.00K
R271
10.00K
SERIAL DIGITAL VIDEO
PAL BLACK BURST
(COMPOSITE)
+5V
R255
100
3
2
1
8
4
U22A
LM358
R256
100
5
6
7
U21B
LM358
R269
2.000K
R272
2.000K
R341
464
R340
787
BUF1
TP7
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VOLTS6
VOLTS0
VOLTS1
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S3
ATTEN_C
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VOLTS6
VOLTS0
VOLTS1
VREF2
ATTEN2
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S9
ATTEN_M
B2
4
VREF8
ATTEN8
C4
1
F4
1
B4
4
VREF9
ATTEN9
F4
2
B4
4
C2
2
F2
2
B4
4
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VOLTS6
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VREF3
ATTEN3
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S10
ATTEN_M
B2
4
B2
4
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VOLTS6
VOLTS0
VOLTS1
VOLTS2
VOLTS3
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S4
ATTEN_C
BUF2
BUF3
SERIAL DIGITAL VIDEO
(COMPONANT)
-5V
5
6
7
U22B
LM358
R257
100
R276
2.000K
R274
2.000K
R330
402
R342
9.76K
R275
1.43K
R280
10.00K
R281
10.00K
+5VD
GND
POWER
SUPPLY
+15V
1
2
3
4
5
6
J21
90-250V
50/60 Hz
40 VA MAX
REAR
PANEL
-15V
A4 POWER SUPPLY BOARD
+5VD
R277
3.40K
+15V
R335
22
C186
47UF
35V
RELAY
R279
10.00K
SERIAL DIGITAL AUDIO
+5V
-5V
+5V
-5V
3
2
1
8
4
U23A
LM358
R258
100
R283
4.12K
3
2
1
8
4
U24A
R331
100K
R278
5.000K
R343
243
BUF4
BUF5
USER DEFINED
R260
100
VOLTS4
VOLTS5
VOLTS6
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS5
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S5
ATTEN_C
VOLTS4
VOLTS5
VOLTS6
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VREF4
ATTEN4
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S11
ATTEN_M
B2
4
VREF10
ATTEN10
F3
3
B4
4
C4
2
VREF11
ATTEN11
C3
3
VOLTS6
VREF5
VREF6
ATTEN5
ATTEN6
ATTEN_M
B2
4
VOLTS6
VOLTS0
VOLTS1
VOLTS2
VOLTS3
VOLTS4
VOLTS5
VOLTS6
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
S6
ATTEN_C
ATTEN_C
BUF6
USER DEFINED
R261
100
R288
6.81K
R266
10K
R287
1.40K
R284
4.12K
5
6
7
U24B
LM358
R332
100K
R285
6.81K
R265
10K
R286
1.40K
3
3
C170
.1UF
-2.5V_REF
C176
47UF
35V
CR66
CR67
+5V
-5V
C169
.1UF
C177
47UF
35V
1
2
1
2
U29
+15V
-15V
C180
47UF
35V
C181
.1UF
C182
.1UF
C183
47UF
35V
U28
7805
ECO 422 Changeover Unit
VOLTAGE REFERENCE & SELECTOR SWITCH FARM
5
PART OF A2 MAIN BOARD
Содержание ECO 422
Страница 4: ......
Страница 6: ......
Страница 14: ...General Safety Summary viii ECO 422 ...
Страница 16: ...Service Safety Summary x ECO 422 ...
Страница 17: ...Getting Started ...
Страница 18: ......
Страница 31: ...Operating Basics ...
Страница 32: ......
Страница 41: ...Operating Basics ECO 422 2 9 Figure 2 6 Setup for Adjusting R265 the User Level for SX 7 ...
Страница 43: ...Specifications ...
Страница 44: ......
Страница 52: ......
Страница 53: ...Theory of Operation ...
Страница 54: ......
Страница 62: ...Theory of Operation 4 8 ECO 422 ...
Страница 63: ...Performance Verification ...
Страница 64: ......
Страница 84: ...Performance Verification 5 20 ECO 422 ...
Страница 85: ...Adjustment Procedure ...
Страница 86: ......
Страница 88: ...Adjustment Procedure 6 2 ECO 422 ...
Страница 89: ...Maintenance ...
Страница 90: ......
Страница 101: ...Options ...
Страница 102: ......
Страница 104: ...Options 8 2 ECO 422 ...
Страница 105: ...Replaceable Electrical Parts ...
Страница 106: ......
Страница 140: ...Replaceable Electrical Parts 9 34 ECO 422 ...
Страница 141: ...Diagrams Circuit Board Illustrations ...
Страница 142: ......
Страница 145: ......
Страница 147: ... ECO 422 Changeover Unit FRONT PANEL 1 ...
Страница 148: ...ECO 422 ...
Страница 166: ...ECO 422 ...
Страница 167: ...Replaceable Mechanical Parts ...
Страница 168: ......
Страница 174: ...Replaceable Mechanical Parts 11 6 ECO 422 ...
Страница 175: ......
Страница 176: ...ECO 422 A1 FIG 1 EXPLODED VIEW A2 A3 A4 ...
Страница 177: ......