Tektronix 2445A - Page 262

ATTENUATORS AND PREAMP$ DIAGRAM 4
ASSEMBLY A1
CIRCUIT SCHEM BOARD
CIRCUIT SCHEM BOARD CIRCUIT
SCHEM
BOARD CIRCUIT SCHEM
BOARD
NUMBER LOCATION LOCATION
NUMBER LOCATION LOCATION NUMBER
LOCATION
LOCATION
NUMBER
LOCATION LOCATION
ClOO
1H
5C CR150 6F 7B
R123
38
2J
R430
7N 4E
C103 4F 6C
CR151 6F 7B
R129
58
7B
R450 3N 4F
C105 1H
5C CR152 6E 78
R130
6C
88
R451 3N 4F
Cl 10 2H
6B CR153 6E
78
R131 5C
98
R452
3N
4E
C115 2M
7E CR154 4G
BC
R133
4M
BB
R453 3N
4F
Cl 16 2N
BF CR155 5G
BC
R135
4N BA
R454 6N 4F
C117 3L 7E
CR161 5K 2D
R136 4C
2J
R455
6N
4F
C118 2N
BF CR162 2K
2D
R140
6C
BC
R456 6N 4F
C130
58
6C CR163 2K
2D
R141
5C
BC-
R457 6N
4F
C175
6J
2D
CR180 3K 7D R142
5C
9C
R458
3P 4F
C176
6J
2D CR181 7K 5D R143 6C
BC
R459 7P 5G
C177
2J
3D CR200 7H
4C
R144
5C
BB
R460 BM 4E
C179 2J 3D CR201 7H
4C
R149 4D
9B
R461 BM 4E
C182 6J 3E CR460 7N
3F
R159 6K 2D
R462 BM 4E
C183 3J
3E CR461 7N 3E
R161
6K
2D
R463 7M 3F
C184 BL 2F R162 2K
3D
R464 7P
3E
C185 SL
3B JlO 2H 6B R163 2K
3D
R465 7N 4F
C200 7H 4C
Jl 1
7H
3A R180 3K
2E
R468 6P
4G
C202 5F 4C JlOO
7P 5G
R181
3K
2E
R469 7N 3E
C203 7L
5C
J101
6F 3J
R182
7K
2E
R473 7P
5G
C205
7H 4C
J105 7P
2E
R183 7K
2E R502 3C
1H
C211
BH 3A Jl 17 2M
7E
R190
3H
1H
C217 SL 3D J120 4M
9A
R191
3H
1H
UlOO
lL
6D
C223 3D
2J J181 4N BB
R192
3H
1J
Ul 10 4E 7B
C301 10A 1A J511 10P
1D
R193
3H
lE U120 5E 7C
C302 9A 38 J511 2A
1D
R194
3H
1J U130A
4F
7C
C310 SH
1B
J511
BA 1D R195 BL
3E U130B 5F
7C
C311
2H lC J512 3A
1J
R196 BL
3E U130C
5K 7C
C329 9J
2D
R197
BL
3F U130D
4M
7C
C332 9J 2D Ll 15 2N
7E
R198
BK
3F
U130E
5M
7C
C460 7N
4E R199
BL
3F U130F
4M
7C
C464 7P
3E
LR180
3M 5E R200 7H
4C
U130G 58 7C
C466 SN
3E LR280 6M 4E R201
7H 38
U140 4D
88
R202 BH
38
U150 5D
BC
CR100 1K
5C 0130 6C
88
R216
7L
3D U160A
2K
2D
CR101 1K
5C 0131
5C
88 R217 7K
3D
U160B 5K
2D
CR130
5C 88 0190 BL 3F R218 BK
3E
U160C 6K
2D
CR131 6C
BB 0460A 7N 4E R230 3D
3E
U160D 2K
2D
CR140 4G 78
04608 7M 3E R231 3C
3E
U165A BL 2F
CR141 4F 7B
R232 3B
3E
U170 3H 2E
CR142 4F 78 RlOO
1H 6C R301 lOA
1A
U180A 3K 2E
CR143
4F 78 R101
2H 78 R302 9A
3A
UlBOB 6K 2E
CR144
4F 78 R102 2H
78 R303 lOC
2A
U200
5L
4D
CR145
4E 7B Rl 14
2M 7D R304 lOA
1A U300
9L
2B
CR146 4E
78 R115
2M 7D R311
9A 3A
U450A 6N 4F
CR147
5G 78 Rl 17
3K 7E R312 98
2A
U450B 3N 4F
CR148
5F 7B Rl 18
3K
6E
R329
9H
2D
CR149 5F 7B R121
3L
5D
R332 9H 2D
Partial A 1 also shown on diagrams 5, 6, 8 and 11,
ASSEMBLY AB
DS100
4P 1M DS102
5P 1P
W181 5P 1P
DS101
5P 1N
OTHER PARTS
Jl
1A CHASSIS PlO
2G CHASSIS R134
4L CHASSIS WlO 2G CHASSIS
J2 7A CHASSIS
Pl 1 7G
CHASSIS
R301 lOA
CHASSIS Wll 7G
CHASSIS
J3 9A CHASSIS
P105 7P CHASSIS R302 9A
CHASSIS
J4
10A CHASSIS
P120 4M CHASSIS R304 lOA
CHASSIS
J5 7P CHASSIS
P120 4M CHASSIS R311
9A CHASSIS
P181 4N CHASSIS
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