SONY HMD-A440
Service Manual

9. Adjust each top and bottom pins by two wedges and then not swing DY neck right and left. (When fixing DY with wedges, insert wedges completely so that the DY does not shake.)
a c b d

13. If using the magnet, be sure to demagnetize with the degausser and check. 14. Remove the sensor and wobbling coil. 15. Fix the purity magnet paisted on the DY with the white pen.Fix it with the RTV.

"a" and "b" must be equal. 10. Adjust the top and bottom pins with the TB.PIN VR complettely. And ajust the V.Size simulation. 11. Adjust the V.key (=H.Trapxoid) with the H-Trp VR so that [a] become equol to the [b]

� Convergence Rough Adjustment
1. Enter the white crosshatch signal (white lines on black). 2. Adjust roughly the horizontal and vertical convergence at four-pole magnet. 3. Adjust roughly HMC and VMC at six-pole magnet.

� Convergence Adjustment
c d

12. If the corner is not within the standards, adjust disc magnet to satisfy L/D adjustment standards. Note: (1) When necessary to paste magnets more than 2 pieces, be careful that the convergence and the distortion would be alterable. (2) Paste within 80 to 120 mm from the DY on the diagonal line of the magnet.

< Static convergence > 1. Change the "CONV SW" to 0. 2. Receive the crosshatch of R and B. (on black) 3. Adjust H. STAT and V. STAT with 4 pole magnet. 4. Recieve the white crosshatch signal.(White line on black) 5. Adjust HMC and VMC with the 6 pole magnet. 6. Recieve the crosshatch of R and B. (on black) Note: Adjust H. STAT and V. STAT in the beggining by 4 pole magnet not adjust them by register immediately.

HMD-A440(E)

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