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JVC AV20421/SA
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of JVC AV20421/SA Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

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Text excerpt from page 28 (click to view)
AV-20420 AV-20421

STATIC CONVERGENCE ADJUSTMENT (1) Input a crosshatch signal.

(2) Using 4-pole convergence magnets, overlap the red and blue lines in the center of the screen (Fig.1) and turn them to magenta (red/blue).

(FRONT VIEW)

(3) Using 6-pole convergence magnets, overlap the magenta (red/blue) and green lines in the center of the screen and turn them to white. Fig.1 (4) Repeat 2 and 3 above, and make best convergence.

(FRONT VIEW)

DYNAMIC CONVERGENCE ADJUSTMENT (1) Move the deflection yoke up and down and overlap the lines in the periphery. (Fig. 2)

RED

GREEN BLUE

BLUE GREEN

RED GREEN BLUE

(2) Move the deflection yoke left to right and overlap the lines in the periphery. (Fig. 3)

RED

(3) Repeat 1 and 2 above, and make best convergence.

BLUE

GREEN

RED

Fig.2 ⢠After adjustment, fix the wedge at the original position. Fasten the retainer screw of the deflection yoke. Fix the 6 magnets with glue.
(FRONT VIEW) GREEN RED BLUE GREEN BLUE RED RED GREEN BLUE

BLUE GREEN RED

Fig.3

1-28 (No.52111)

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