Tektronix 1705A - Manual (Page 204)

R139
9.09K
+11.8V
2dB GAIN
R140
50K
12
13
14
6
1
1
1
6
7 8
U21A
4053
+5V
GAIN
VERT
NC
R184
10.0K
R176
50K
R152
4.75K
VPOSN
FILTER
LOWPASS
15 KHz
R210
20.0K
R188
6.19K
C93
100PF
+11.8V
R229
6.19K
R225
1.21K
+40V
+11.8V
AMPLIFIER
DEFLECTION
VERTICAL
R230
6.19K
+SIG
TO CRT
BLUE
VERT
DEFL
PLATES
J12
J13
<8>
H2 BROWN
<5>
B3
R227
56.2K
R197
80.6K
R226
35.7K
R228
7.50K
R221
511.0
Q29
Q28 VERT_POSN
--- SIG
+11.8V
Q26
Q27
Q23
R212
2.00K
R223
100.0
R224
2.74K
R220
511.0
<5>
H2
12
13
14
6
1
1
1
6
7 8
U30A
4053
C84
.001UF
1
2
15
1
0
U30B
4053
/VFILTER
+5V
--- 11.8V
2
3
6
7
4
U33
LF351
R209
10.0K
C78
.001UF
R204
10.0K
--- 11.8V
NC
<2>
H4
NC
NC
NC
R135
2.00K
2
3
6
7
4
8
1 5
U27
LM318
R194
100.0K
LOG
+11.8V
--- 11.8V
<5>
D2
NC
NC
5
3
4
9
U21C
4053
2
1
15
1
0
U21B
4053
2DB
--- 11.8V
CONNECTS
A1
POWER
<7>
J4
TO J4
NC
NC
<5>
<3>
B3
E4
NC
1
1
2 2
3
3
4 4
5
5
6 6
7
7
8 8
9 9
10 10
J4
ZAXIS
FOCUS
+40V
+15V
+100V
BUFFERS
<5>
H4
D2
R30
15.0K
/RO--- EN
YAXIS
Q22
R213
100.0
R211
100.0
--- 11.8V
--- 11.8V
TO CRT
<8>
H2
RED
GREEN
HORIZ
DEFL
PLATES
J8
J7
3W
HORIZONTAL
DEFLECTION
AMPLIFIER
R179
6.3K
Q15
--- RAMP
+RAMP
3W
R178
6.3K
Q14
+100V
CONNECT FOR 10 DIV
<5>
<5>
H4
R180
10.0K
W12
0 OHM
R177
2.00K
W11
0 OHM
R309
2.00K
R308
499.0
XAXIS
W8
0 OHM
--- 11.8V
+5V
--- 15V
--- 11.8V
+40V
SUPPLY
BOARD
J23
J22
TO W698
PIN 1
TO W698
PIN 2
<6>
J21
TO S100
<6>
<6>
+11.8V +11.8VF
L19
64UH
C102
.1UF
+15V
POST REGULATORS
<3>
~ ~
4V P--- P
GAIN
HORIZ
B1
R168
5K
R162
8.87K
+RAMP
5V P--- P ~ ~
NC
NC
+11.8V
3
2
1
8
4
U26A
TL072
6
5
7
U26B
TL072
3
5
4
9 U30C
4053
Q17
Q19
Q18
R185
100.0
R189
1.00K
R199
681.0
+11.8V
R192
210.0
<5>
B3
R191
1.00K C65
.1UF
Q16
R190
8.25K
R186
100.0
HORZ_POSN
+11.8V
R193
210.0
R198
100.0
R200
100.0
--- 11.8V
--- 11.8V
NC
--- 11.8V
R101
4.75K
R99
500
C23
1UF
R77
604.0
CR9
CR10
--- 15V
--- 11.8V
C24
10UF
--- 11.8V
ADJUST
CR18
CR17
C22
.1UF
IN
2
OUT
3 A
1
U15
LM337
+15V
--- 15V
+11.8V
C26
10UF
+11.8V
ADJUST
1/2W
R116
604.0
R134
16
IN 3 OUT 2
A
1
U19
LM317
C28
.1UF
R111
500
R100
4.75K
C27
1UF
+15V
1705A SPECTRUM MONITOR DEFLECTION AMPLIFIERS <4>
See parts list for earier values and serial number ranges.
PART OF A3 MAIN BOARD