BELSON BSV-29251
Manual de Servicio

Luminance/chroma time delay adjustment (YD_ _) Respectively input PAL,SECAM,NTSC RF signal or PAL AV signal and adjust YD_ _ to make luminance tallied with chroma. For those model with SVM function, on the condition that SVM is set to ON, input split field or crosshatch signal, respectively adjust YD_ _ until SVM�s edge from black to white is in symmetry with that from white to black, give attention to the data that make luminance tallied with chroma. 4.10 High voltage and filament voltage check 4.10.1 Connect high voltage meter between CRT high voltage cap and GND, use effective and precise voltameter to measure filament voltage. 4.10.2 Receive D35 signal, set picture mode to �DYNAMIC�. Measure the high voltage and filament voltage and the reading should be: for 29� super flat CRT, the high voltage is 29 kV 0.5 kV, for 29� pure flat CRT, the high voltage is 30 kV 0.5 kV, filament voltage 6.3 0.3 Vrms. 4.11 X-ray protection check 4.11.1 Receive normal picture. 4.11.2 Press S301 switch, horizontal scan should stop vibration and turn off. 4.11.3 Turn off the power switch and wait about 30 seconds, turn on the set again, it should restore to normal. 4.12 Beam current check Receive D35 signal, set picture mode to �DYNAMIC�, measure R313 two terminals, for 29� super flat it should be 1.6 V, for 29� pure flat it should be 1.7V. 4.13 AV function check According to Instruction manual, connect the AV equipment to the AV terminals which need to be check, the following is required: VIDEO IN: 1 Vp-p 75 , AUDIO IN: -8 dBm 3 dBm 47 k . 4.14 Out-factory status setting Contrast: Brightness: Colour: Sharpness: Treble: Bass: Balance: 45 28 40 35 31 31 0 Comb filter: Blue back: Black stretch: SVM: AVL: Surround: ON ON ON ON OFF OFF

4.9

The following appendix is factory menu and data.

5