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Old 01-06-2024, 05:12 PM
bhegges bhegges is offline
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Join Date: Oct 2008
Location: Sioux Falls, SD
Posts: 140
Continuing along the next few steps went well.

Color Sync Alignment
  • Color switch on, color level set to the halfway point
  • Color Bar generator connected to antenna terminals set to Color Bar Pattern
  • Connect a .01uf capacitor from test point L to ground
  • Ground test point K
  • Adjust L34 for zero beat on screen and minimum movement of color bars through picture (they were visible and a very slight adjustment removed these)
  • Next set VTVM to +50v DC range
  • Connect VTVM to test point V, adjust T20 top slug for maximum indication (very little adjustment was needed)
  • Connect VTVM to test point V, adjust T20 bottom slug for minimum indication (very little adjustment was needed here too)
  • Note T20 slugs should be on outside end of coil not towards the middle
  • Remove ground from Test Point K and .01uf capacitor from test point L
  • Color switch on, color level set to the halfway point
  • Color Bar generator connected to antenna terminals set to Gated Rainbow
  • Connect scope to test point R, adjust L29 Burst Amplifier Plate coil to match Figure 15A (a small amount of adjustment was needed)
  • The second and forth bars should be equal in amplitude
  • Connect scope to test point S
  • If needed touch up T20 bottom slug quadrature coil to match 15B (a small amount of adjustment was needed)
  • 5th and 7th bars equal in amplitude
  • Note slug should require a very minimal amount of adjustment

Color Level Adjustment
  • Color Bar generator connected to antenna terminals set to Color Test Pattern
  • Connect scope to test point R and set color level to minimum
  • Adjust L18 for minimum color output at test point R (a very small amount of adjustment was needed)
  • Essentially the picture should be black and white only

Range Check of Hue Control
  • Color Bar generator connected to antenna terminals set to Gated Rainbow
  • Connect scope to test point R and set hue control to maximum counter clockwise
  • First and third color bars should be equal in amplitude (second color bar maximum)
  • If not touch up L29 Burst Amplifier Plate coil for equal amplitude of first and third color bars (a very small amount of adjustment was needed)
  • Connect scope to test point R and set hue control to maximum clockwise
  • 4th and 5th color bars should be equal in amplitude (they were)
  • Note if only the 3rd and 5th color bars can be made equal than this is acceptable
  • Connect scope to test point R
  • Set hue control for equal amplitude of 2nd and 4th (3rd color bar at maximum)
  • Now connect scope to test point T
  • Color pattern should appear as shown in figure 15C (No pic but it matched)

Alignment Points
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