Tektronix WFM 300A - Manual (Page 179)

NC
NC 3
2
1
8
4
U495A
TL072
+11.8V
NC
+11.8V
6.2V
C391
.1UF
VR391
Q393
+11.8V +11.8V
R391
6.81K
+11.8V
CH 1
INPUT
J200
J220
REAR
PANEL
W291
J291 R297
100.0
CH1
E200
E220 C297
47UF
R397
10M
Q397
/AC
R292
100.0
R388
3.01K
CR391
R398
15.0K
R387
8.25K
1
2
3
4
5
U293D
CA3046
1
4
12
1
3
U293C
CA3046
C395
33PF
R396
100.0
R493
1.00K
R395
3.92K R295
100.0
+11.8V
-11.8V
-11.8V
8
6
7
U293A
CA3046
R491
1.00K
R392
1.50K
GREEN
-11.8V
1
1
9
1
0
U293B
CA3046
<2>
<3>
B1
<2>
C5
A5
R267
10.0
8 10
7
U264D
IH5352
VGRNSEL
GREEN
GREEN
GREEN
<2>
F4
VSIG1
-11.8V
<3>
<3>
A4
F5
6 12
5
U264C
IH5352
NOINPUT
CH1
DC REST
OFFSET
C487
.1UF
R389
10M
C486
47PF
Q490
CLAMP
CLAMP
6.2V
C399
.001UF
C498
.01UF
C591
.1UF
R492
15.0K
R496
50K
VR591
R498
3M
5
6
7
U495B
TL072
+11.8V +11.8V
-11.8V
R495
562.0K
CH1
OFFSET
2
3
1
12
13 4
5
U588A
DG211
R399
15.0K
R289
3.01K
R288
2K
R591
6.81K
+5V
+11.8V
-11.8V
-11.8V +11.8V
W290
J290
INPUT
J300
J320
CH 2(B)
W591
W590
R497
100.0
J590
J591
CH2
E300
E320
R598
10M C497
47UF
R795
22.1K
Q597
/AC
+11.8V
R590
100.0
R487
3.01K
CR590
R696
15.0K
1
2
3
4
5
U493D
CA3046
C594
33PF
R595
100.0
R594
3.92K R593
100.0
Q593
-11.8V
8
6
7
U493A
CA3046
R690
1.00K
R596
1.50K
BLUE
+11.8V
-11.8V
1
1
9
1
0
U493B
CA3046
<2><4>
<3>
B1 A2
A5
R274
10.0
8 10
7
U174D
IH5352
BLUE
VBLUESEL
BLUE
BLUE
P179
CONNECTS
TO P610
G1
<6>
A5
GBR
BOARD
2 16
1
1 1
1
3
9
1
5 U176A
IH5352
1
2
P179
VIDIN
+5V
+11.8V
-11.8V
CH2
DC REST
OFFSET
C690
.1UF
Q689
CLAMPREF
CLAMP
C692
47PF
R692
10M
C693
.001UF
C694
.01UF
R698
1.00K
R693
3M
R691
15.0K
5
6
7
U794B
TL072
R689
50K
+11.8V
-11.8V
-11.8V
R694
562.0K
CH2
OFFSET
1
5
1
4
16
U588D
DG211
R597
15.0K
R489
3.01K
R488
8.25K
R490
2K
-11.8V
1
4
12
1
3
U493C
CA3046
NC
DC
REST
R506
221.0
R507
15.0K
R697
392.0
CLAMPREF
/RESTORE
DS505
CH2&3 POS R428
25K
+11.8V
+5V
-11.8V
INPUT
J400
J420
CH 3B(R)
REAR
PANEL
W891
W890
R997
100.0
J891
J890
CH3
E400
E420
R798
10M C997
47UF
R897
2.00K
R799
47.5K
Q898
/AC
+5V
-11.8V
CR991
R991
100.0
R992
6.81K
+11.8V
1
2
3
4
5
U893D
CA3046
6.2V
C994
33PF
C992
.1UF
R996
100.0
VR992
Q993
R994
3.92K R993
100.0
+11.8V +11.8V
-11.8V
8
6
7
U893A
CA3046
R793
1.50K
+11.8V
1
1
9
1
0
U893B
CA3046
<2><4>
<3>
B1 A2
A5
6 12
5
U174C
IH5352
RED
COMPST
RED
<3>
A5
R273
10.0
VREDSEL
RED
R790
10M
C790
47PF
C791
.1UF
R792
1.00K
Q790
CLAMPREF
CLAMP
RED
-11.8V
C797
.001UF
C796
.01UF
3
2
1
8
4
U794A
TL072
R791
15.0K
R796
1.00K +11.8V
-11.8V
-11.8V
R699
562.0K
CH3
OFFSET
1
0
1
1
9
U588C
DG211
R891
3.01K
R794
15.0K
R893
3.01K
R892
8.25K
R898
15.0K
R890
2K
1
4
12
1
3
U893C
CA3046
TEST ONLY
R896
26.7K
R895
10.0K
P897
1 2
J897
Q167
Q897
/AC
CLAMPREF
/RESTORE
+5V
-11.8V
A5
<3>
TEST ONLY
R159
1.00K
CR159
R167
33.2K
R168
348.0K
1 2
J158
P158
SYNBLKEN
+5V
WFM 300A COMPONENT/COMPOSITE WAVEFORM MONITOR
-11.8V CLAMPREF
-11.8V
R797
3M
NOTE:
VERTICAL INPUT <1>
AND SERIAL NUMBER RANGES.
SEE PARTS LIST FOR EARLIER VALUES
PART OF A3 MAIN BOARD