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SONY PVM20N5A
Service Manual


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

Description of SONY PVM20N5A 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.

The manual is available in languages: English

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Text excerpt from page 38 (click to view)
3-6. CONVERGENCE ADJUSTMENT
1. Input the dot pattern signal. Set CONTRAST to the position at which it can be seen clearly. Set BRIGHTNESS to MIN. 2. Align the R, G, B dots in the horizontal direction at the center of the screen using RV703 (H-STAT). Note: If H-CENT was changed after adjusting HSTAT, adjust H-STAT again. (The HSTAT can be changed by the H-CENT switch.) 3. Align the top and bottom of R, G, B at the center of the screen using the V-STAT (vertical static convergence) magnets. Note: After the V-STAT adjustment, always paint the magnets to lock.
I I' I I'

5. For VMC, use a 6-pole magnet to adjust so that the R and B dots are symmetrical above and below the G dot.
R (Top section) Fixed G B

(Bottom section)

6-pole magnet Perform the VMC adjustment by rotating the 6-pole magnet to the left and right without changing the opening of it.

Adjust so that the displacement of the dot is equal at the top and bottom.

A

B

A

B

6. Repeat steps 2 to 5 until the convergence becomes correct. Note: Adjusting the convergence may affect the landing. Therefore be sure to check the landing again after completing this adjustment. 7. After adjusting, paint each magnet to lock them.
14-inch

X

X

Y Good example

Y Bad example

V.STAT convergence magnet Purity BMC magnet

While maintaining the V-STAT magnet knobs A and B at the same angle (I = I'), adjust the top and bottom convergences. If A and B are asymmetrical (I = I'), it will have a negative effect; the focus may not be accurate, or the beam striking may occur. 4. For HMC, use a 6-pole magnet and adjust so that the R and B dots are symmetrical at the left and right sides in respect to the G dot.
I I' R G B
20-inch V.STAT convergence magnet

A

B A A'

Purity BMC magnet

6-pole magnet Perform the HMC adjustment by changing the opening of the 6-pole magnet.

Adjust the 6-pole magnet so that A = A'. While maintaining the I and I' angles equal, adjust the 6-pole magnet.

3-6

SIIA Chassis

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