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24211102 Datasheet(PDF) 12 Page - Toshiba Semiconductor |
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24211102 Datasheet(HTML) 12 Page - Toshiba Semiconductor |
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12 / 126 page  – 12 – 8. SELF DIAGNOSTIC FUNCTION 1) Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s are executed properly. 2) During diagnosis, the following displays are shown. 2300**** POWER : 00 BUS CONT : OK BLOCK : UV V1 V2 V3 QV01 <SELF CHECK> Part number of microcomputer (QA01) Operation number of protecting circuit ----“00” is nor- mal. When indication is other than “00”, overcurrent apts to flow, and circuit parts may possibly be damaged. BUS CONT ----“OK” is normal. When indication shows “Q uuu (Green: OK, Red: NG)”, the device with the number may possibly be dam- aged. BLOCK UV : TV reception mode V1 : VIDEO 1 input mode (a1) V2 : VIDEO 2 input mode (a2) V3 : VIDEO 3 input mode (a3) Indicated color of mode now selected : Green and Red Indicated color of other modes : White Green : Normal Red : The microcomputer operates to provide judgement of no video signal. The red color is still indicated though the signal is input, failure may exist in input signal line including QV01. QV01 : In case of indication green ---Normal In case of indication red with input signal---- Failure may exist in output line including QV01. NOTE: Component which controls character display on screen is QT01 (TELETEXT IC.). If this display function fails to operate due to damage in QT01, self diagnosis procedure is as follows. (1) In case that on timer indicator is blinking with interval of 0.5 seconds; it means protecting cir- cuit (Current limiter) is operating, and circuit components may possibly be damaged. Check related components. * The items marked with are not usable to display in the SELF DIAGNOSTIC FUCTION for some model. |
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