Instruction manual

Checks and Adjustments
1720/1721
5-19
Table 5- 2: Adjustment Procedure Short-Form Reference
Step # Step Name
Adjusted
Components
Page #
1 Adjust +5 V R99 5--20
2 Adjust CRT Bias R58 5--20
3 Adjust Geometry, Focus and Astigmatism R45, R11,
R49
5--20
4 Adjust Trace Rotation and Orthogonality R578 5--20
5 Adjust On- Board Regulated Power Supplies R259, R267 5--21
6 Adjust Lock-In Phase C235 5--22
7 Adjust Center Dot Overlay and Vector Posi ti on R355, R653 5--22
8 Adjust Phase and Gain Match C198, R594 5--22
9 Adjust X and Y Gai n s R846, R948 5--22
10 Adjust XY Phasing C484 5--23
11 Adjust Loop DC Balance R534 5--23
12 Adjust Quad Phase and +V Balance C453, R453 5--23
13 Adjust R- Y and B- Y Gains R460, R655 5--24
14 Adjust 100% Gain R178 5--24
15 Adjust Line Select Focus R244 5--25