Sharp lc-32rd8, Руководство по обслуживанию

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LC-32RD8E/S/RU-BK/GY (1st Edition)
4 – 17
<During external connection> No picture on the monitor (1)
SCART1
No picture appears on EXT1 - connected monitor during the tuner (U/V) reception.
Is CVBS signal output into pin(19) of SC1102(SCART1)
from pin(2) of IC1102(SW)? YES Check the setting of an external input device that connects of SC1102.
NO
Is CVBS signal output from PIN(195) of
IC3001(MAIN_MICON) to PIN(6) of IC1102? YES Check the line between IC1102 and SC1102.
NO
Is video signal (CVBS) sent to pin (191) of IC3001? YES Check the IC3001 and peripheral circuits.
NO
Is VIN1 signal output from pin(6) of TUNRE(TU201)? YES Check the line between TU201 and IC3001.
NO
Check whether I2C is normally accessed between
TU201 and IC3001.
<During external connection> No picture on the monitor (2)
SCART1
No picture appears on EXT1 connected monitor during the tuner (DTV) reception.
Is DTV_CVBS signal output into pin(19) of
SC1102(SCART1) from pin(2) of IC1102(SW)? YES Check the setting of an external input device that connects of SC1102.
NO
Is DTV_CVBS signal output from PIN(195) of
IC3001(MAIN_MICON) to PIN(6) of IC1102? YES Check the line between IC1102 and SC1102.
NO
Is video signal (DTV_CVBS) sent to pin (184) of
IC3001? YES Check power supply of IC3001 and peripheral circuits.
NO
Is DTV_CVBS signal output from PIN(18) of
IC4001(SET-TOP_BOX_DECODER)? YES Check the line between IC4001 and IC3001.
(IC1001, EXT_DTV_LINE, etc.)
NO
Check the IC4001 and its peripheral circuits.