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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
YH Adjustment (VR2 for vertical dynamic convergence) 1. Apply a crosshatch pattern. 2. Adjust contrast and brightness customer controls to obtain a correct picture. 3. With a driver Adjust VR2 (located in deflection yoke board Fig. 19) to obtain a proper corvergence at left and right side of the screen. (see Fig. 14)
Permalloy convergence corrector strip (part No. 0FMK014ZZ)
This strip is used in some sets to match the yoke and CRT for optimum convergence. If the yoke or CRT is replaced, the strip may not be required. First converge the set without the strip and observe the corners. If correction is needed: 1. Place strip between CRT and yoke, in quadrant needing correction. Slowly move it around for desired results. 2. Press adhesive tightly to the CRT and secure with tape.
DAF adjustment
Preparation: 1. Apply a crosshatch pattern. 2. Set user controls, bright to center and picture to max. 3. Connect a frequency counter to TPD10. Procedure: 1. Connect channel one of the oscilloscope with 100x1 probe to TPP33 (pin-1 T1551). 2. Connect channel two of the oscilloscope with 10x1 probe to CRT HEATER (L-Board). 3. Adjust �HDAFP� so both waves are in the same position. 4. Adjust �HDAFW� so TPP33 is 1.5 ± 0.5kVpp.
TPP33
G B&R G B&R
G B&R G B&R
Figure 14. VR2 Adjustment (YH)
XV Adjustment (precise adjustment)
1. Apply a crosshatch pattern. 2. Adjust contrast and brightness customer controls to obtain a correct picture. 3. With a driver adjust the coil located in deflection yoke board to obtain a proper convergence horizontally.
B&R G B&R G
HEATER PIN
B&R G B&R G
Figure 16. DAF adjustment
Figure 15. XV adjustment
Note:
Apply a red pattern and confirm purity, if purity is poor, repeat purity adjustments.
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