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Tektronix 475 - Page 153

Tektronix 475
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Diagrams475
Fig. 7-3. A1 Channel 1 Attenuator circuit board.
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
CIO 3A
R22 3B
C11 2A R33 4B
C41
6B
R39 6C
RIO
2B
R41 6B
R13 2A
R42
7B
Fig. 7-4. A4 Vertical Mode Switch circuit board.
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
P160 5D R129
7C
R120
7C
S20A 7B
R128 2B S20B
5B
Fig. 7-5. A3 Vertical Preamp circuit board.
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
CKT
NO
GRID
LOC
Cl 05
12C C172 7B
L180
7A R113
11A
R134
9B
R155 8B
R174
7C
R187
8C
C107 12A
C175 7B
LI 82
7B
R114 12A R135 8A
R156 9C
R175
7B R188 7B
C112 11B
C182
7B R119
11C
R136
9A
R157
9C
R176
7C
R189
6C
Cl 13
11B
Q172 7B R122 11C R137 9A
R161
9C
R177 7B
Cl 19
11B CR107
12C Q178
7C
R123
12C R138 9A
R162
9C
R178
7C
RT170
7C
Cl 33
9B CR170
7B
Q182
7B
R124
11C
R139 9A
R163
9C
R179 6D
C136 9A CR174
7B
Q184 8C
R125 IOC
R142
10B
R164
9C
R180
7A U120
11B
Cl 37
9A
Q188
7B
R126
11C
R143
10B
R165
IOC
R181
8C U140 9B
Cl 38
9A
L151
8B
R127
11C R145 11C
R168
11C
R182
7B
C139
9A
L152
8B
R105 11C R130 8B
R149
9C
R170 7B
R183
7B
VR144
10B
Cl 44
10B L172
7C R 110 11A
R131
10B R151
8B
R171
8B
R184
8C
VR161
9C
C153
9B L170
7B R111 11A R132 9B R152
8B
R172
7C
R185 10A
Cl 57
8C L178
6B
R112 11B
R133 9B R154
8B
R173 7B
R186 8C
+
415 06 C. I L L .O S C O P E
C H I V E R T IC A L P R E A M P <$>
JEW
\-Z11
CH I VERTIC AL PREAMP

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