Toshiba 28YT56, Service Manual

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GEOMETRY PERFORMANCE
ASPECT RATIO
NON-LINEARITY (Horizontal & Vertical) % 10
DE-CENTERING (Horizontal & Vertical) % 1
OVER-SCANNING (Top, Bottom, Left, Right) % 2,5
UNDER-SCANNING (Top, Bottom, Left, Right) % 97,5
RASTER ROTATION / TILT 3 mm.
PARALELLOGRAM (Left counter, Right Counter) % 1,5
TARPEZIUM (Horizontal, Vertical) % 1,5
OUTLINE DISTORTION (Top, Bottom, Right, Left outline distortion) % 1,5
INNER DISTORTION (Top, Bottom, Right, Left inner distortion) % 1,5
BENDING (Top right, top left, bottom left, bottom right corner bending) % 10
EHT AND DEFLECTION PERFORMANCE
ANODE VOLTAGE CRT spec.
BEAM CURRENT CRT spec.
HEATER VOLTAGE CRT spec.
EHT REGULATION % 1,5
HORIZONTAL FLYBACK VOLTAGE HOT spec.
HORIZONTAL FLYBACK TIME 12 usec. Max
VERTICAL FLYBACK VOLTAGE Vertical IC spec.
VERTICAL FLYBACK TIME 1 msec. Max
SCREEN VOLTAGE CRT spec.
FOCUS VOLTAGE CRT spec.
FOCUSING
PICTURE PERFORMANCE
IMAGE CALL UP TIME 9 sec. Max
WHITE BALANCE x=285 ± 3 , y=293 ± 3
MAXIMUM LUMINANCE 120 ± 10 Cd/m²
VIDEO BANDWIDTH 3,5 Mhz. Min
SIGNAL TO NOISE RATIO 40 dB min
2T PULSE WIDTH 200 ± 40 nsec
OVER-SHOOT % 10 max
UNDER-SHOOT % 10 min
CONTRAST RATIO 60 min
CONTRAST LEVEL 90 – 100V min
CROSSTALK: TV TO AV - AV TO TV Should be not visible
TOLERANCE TO VISION OVER MODULATION No effect up to %30 modulation
COLOUR PURITY Not visible from 1,8m distance
COLOR SCYNCHRONISATION 0,5 sec delay max.
PICTURE SWAY No picture shake allowed
MOIRE No moire effect allowed