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Adjustment Procedures
5–8
1780R-Series Service Manual
Adjustment List
Table 5–2 lists all of the adjustments by step number sequence. This table can be
used as a short form adjustment procedure for those who are familiar with the
adjustment procedure for the 1780R-Series.
Table 5–2: 1780R-Series Adjustments for Calibration Procedure
Step # Adjustment Name A #
Circuit
Number
Diag #
2 +5 V Adj A1 R219 43
2 Ripple Null A16 R135 42
3 Set Software Options (not required unless calibration data
becomes lost or invalid)
N/A N/A N/A
4 (WFM) CRT Bias A16 R420 42
5 (WFM) Astigmatism A16 R122 42
5 (WFM) Focus A16 R130 42
6 (Vector) CRT Bias A3 R373 41
7 (Vector) Focus A3 R182 41
7 (Vector) Astigmatism A3 R200 41
8 DAC Gain A2 R231 12
8 H Shape A5 R536 20
8 V Shape A5 R555 20
9 (WFM) Geometry A16 R112 42
9 (WFM) Orthogonality A2 R536 6
10, 33 WFM Readout H Gain A2 R167 11
10, 33 WFM Readout H Center A2 R170 11
10 Vert Readout Size A2 R215 6
10, 18 Vert Readout Pos A2 R309 6
11 (Vector) Geometry A3 R101 41
11 (Vector) Orthogonality A6 R511 30
12 Readout Horiz Pos A6 R523 30
12 Readout Vert Pos A6 R620 30
12 Readout Vert Gain A6 R833 30
12 Readout Horiz Gain A6 R836 30
13 Pix Vert Gain A6 R404 29
13 Pix Vert Pos A6 R407 29
13 Pix Horiz Gain A6 R604 29
13 Pix Horiz Pos A6 R606 29