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This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
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A complete manual with all the needed details of calibrations and service instructions about the radio receiver.
A big deal.
Many thanks !
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Fast delivery and good quality copy. To be recommended
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Excellent product, very clear print. Detailed circuit and assembly diagrams - this enabled me to repair my CD player with confidence. I highly recommend this site.
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Fast access, 100% correct and complete service manual
4.6.9 PURITY AND CONVERGENCE
!PURITY ADJUSTMENT
Note: The final adjustment of CONVERGENCE must be done after the FOCUS adjustment. (CONVERGENCE is changed by FOCUS adjustment.) When makes difference by FOCUS adjustment, should be reconfirming PURITY adjustment. (1) (2) (3) (4) Demagnetize CRT with the demagnetizer. Loosen the retainer screw of the deflection yoke. Remove the wedges. Input a green raster signal from the signal generator, and turn the screen to green raster. (5) Move the deflection yoke backward. (6) Bring the long lug of the purity magnets on the short lug and position them horizontally. (Fig. 2) (7) Adjust the gap between two lugs so that the GREEN RASTER will come into the centre of the screen. (Fig. 3) (8) Move the deflection yoke forward, and fix the position of the deflection yoke so that the whole screen will become green. (9) Insert the wedge to the top side of the deflection yoke so that it will not move. (10) Input a crosshatch signal. (11) Verify that the screen is horizontal. (12) Input red and blue raster signals, and make sure that purity is properly adjusted.
CRT
WEDGE DEFLECTION YOKE
P
46
P/C MAGNETS
� P/C MAGNETS P : PURITY MAGNET 4 : 4 POLES (convergence magnets) 6 : 6 POLES (convergence magnets)
Fig. 1
PURITY MAGNETS Long lug
Short lug Bring the long lug over the short lug and position them horizontally.
Fig. 2
(FRONT VIEW)
GREEN RASTER
CENTRE
Fig. 3
1-28 (No. 52179)
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