A3 main board, Assembly a3, Schematic diagram <1> component locator chart – Tektronix WFM 300A User Manual
Page 178: Wfm 300a, Board lookup table on front of this page
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WFM 300A
C297
B1
P2
C391
E1
O2
C395
E1
P2
C399
E2
P3
C486
F2
O3
C487
F2
O3
C497
B3
P3
C498
E2
P3
C591
E2
O4
C594
E3
P4
C690
F4
O4
C692
F4
O4
C693
E3
P4
C694
E3
P4
C790
F5
O5
C791
F5
O5
C796
E5
P5
C797
E5
P5
C992
E4
O6
C994
E4
P6
C997
B4
P6
CR159
B5
J1
CR391
D1
O2
CR590
D3
O3
CR991
D4
O6
DS505
B4
A4
J158
B5
J1
J290
A2
Q2
J291
A1
Q2
J590
A3
Q4
J591
A3
Q4
J890
A4
Q5
J891
A4
Q6
J897
C5
P5
P158
B5
P179
G4
M1
P897
C5
Q167
C5
K1
Q393
E1
P2
Q397
B1
P2
Q490
F2
O3
Q593
E2
O4
Q597
B3
P4
Q689
F3
O4
Q790
F5
O5
Q897
B5
P6
Q898
B4
P6
Q993
E4
P6
R159
B5
J1
R167
B5
K1
R168
B5
K1
R267
G1
K2
R273
G5
L2
R274
G3
L2
R288
D2
N2
R289
D2
O2
R292
D1
O2
R295
E1
P2
R297
B1
P2
R387
D2
O2
R388
D1
O2
R389
F2
O3
R391
D1
O2
R392
E1
O3
R395
E1
P2
R396
D1
P2
R397
B1
P2
R398
C1
P2
R399
D2
P3
R428
B3
D3
R487
D3
O3
R488
D3
O3
R489
D4
O3
R490
D3
N3
R491
F2
O3
R492
E2
O3
R493
E2
O3
R495
E2
P3
R496
E2
P3
R497
B3
P4
R498
E2
P3
R506
B3
A3
R507
B3
A3
R590
D3
O3
R591
D2
O4
R593
E3
P3
R594
E3
P4
R595
D3
P4
R596
E3
P4
R597
D3
P4
R598
C3
P4
R689
E3
O4
R690
F3
O4
R691
E3
O4
R692
F3
O4
R693
E4
P4
R694
E3
P4
R696
C3
P4
R697
C3
P4
R698
E4
P4
R699
E5
P4
R790
F5
O5
R791
E5
O5
R792
F5
O5
R793
E4
O5
R794
D5
O5
R795
C3
P5
R796
E5
P5
R797
E5
P5
R798
C4
P5
R799
C4
P5
R890
D5
N6
R891
D5
O5
R892
D5
O5
R893
D5
O5
R895
B5
P5
R896
B5
P5
R897
B5
P5
R898
C5
P6
R991
D4
O6
R992
D4
O6
R993
E4
P6
R994
E4
P6
R996
D4
P6
R997
B4
P6
U174C
G5
L1
U174D
G3
L1
U176A
G4
M1
U264C
G2
J2
U264D
G1
J2
U293A
E1
P2
U293B
F1
P2
U293C
D2
P2
U293D
D1
P2
U493A
E3
O3
U493B
F3
O3
U493C
D3
O3
U493D
D3
O3
U495A
H1
P3
U495B
E2
P3
U588A
C2
N3
U588C
C5
N3
U588D
C3
N3
U794A
E5
P5
U794B
E3
P5
U893A
E4
O6
U893B
F4
O6
U893C
D5
O6
U893D
D4
O6
VR391
E1
O2
VR591
E2
O4
VR992
E4
O6
Static Sensitive Devices
See Maintenance Section
A3 Main Board
Comp
No
Diag
Loc
Bd
Loc
Comp
No
Comp
No
Diag
Loc
Bd
Loc
Assembly A3.
Bd
Loc
Diag
Loc
Comp
No
Diag
Loc
Bd
Loc
Comp
No
Comp
No
Diag
Loc
Bd
Loc
Bd
Loc
Diag
Loc
Comp
No
Diag
Loc
Bd
Loc
Comp
No
Comp
No
Diag
Loc
Bd
Loc
Bd
Loc
Diag
Loc
Board lookup table on front of this page.
Schematic Diagram <1> Component Locator Chart
The schematic diagram has an alphanumeric grid
to assist in locating parts within that diagram.
Assembly A3. Partial Assembly A3 also shown on
Diagrams 2, 3, 4, and 5.
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