26
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
Summary of Contents for 28YT56
Page 1: ...SERVICE MANUAL PRINTED IN UK 2003 C COLOURTELEVISION 28YT56 32YT56 TOSHIBA ...
Page 7: ...6 Block diagram of the TV System with face down version is ...
Page 8: ...7 ...
Page 22: ...21 ...
Page 33: ...32 Pin NO Signal 1 14 volt 2 80 volt 3 EHTINFO 4 HEATER 5 GND 6 7 200 volt ...
Page 34: ...33 2 2 6 CABLE SPECs 2 2 6 1 RGB CABLE ...
Page 35: ...34 ...
Page 36: ...35 2 2 6 2 200V CABLE with BSVM ...
Page 37: ...36 ...
Page 38: ...37 2 2 6 3 200V CABLE without BSWM ...
Page 39: ...38 ...
Page 76: ...75 6 PICTURE MODES ...
Page 77: ...76 ...
Page 78: ...77 ...
Page 79: ...78 ...
Page 80: ...79 7 CIRCUIT DIAGRAMS ...
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