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General| Screen Size | 20 inches |
|---|---|
| Display Type | CRT |
| Model Number | 6420FE |
| Color | Color |
| Aspect Ratio | 4:3 |
| Inputs | Composite |
Essential safety measures to follow when servicing TV circuits.
Procedure for testing electrical leakage current on the unit.
Guidelines for X-radiation and high voltage safety.
Guidance on handling safety-critical parts and internal wiring.
Checking specified clearance distances between terminals.
Performing leakage current tests with specified loads.
Proper grounding for technician and workbench to prevent static damage.
Instructions on entering and using the TV's service mode.
Steps to adjust the +B voltage level for correct operation.
Setting default parameters for various functions.
Adjusting brightness, contrast, color, tint, and sharpness.
Procedure to set correct horizontal frequency.
Correcting the horizontal position of the screen image.
Correcting the vertical position of the screen image.
Mixing R, G, B beams for pure white color.
Aligning red, green, and blue beams for proper convergence.
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