Sharp lc-32rd8 Service Manual page 51

Is the MPEG data (FED[0:7], FECLK, FEVALID, FESTROUT)
output its from IC207 to IC4001?
Does X4001(27MHz) of IC4001 oscillate?
Are the video signals (DTV_R/G/B, DTV_CVBS) output from
PIN(15,16,17), PIN(18) of IC4001?
Are the video signals (DTV_R/G/B, DTV_CVBS) input to
PIN(181,180,179), PIN(184) of IC3001(MAIN_MICON)?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the CVBS signal input to EXT1 go out?
Does not the picture of the CVBS signal input to EXT2 go out?
<EXT1>
Is CVBS signal sent to pin (20) of SCART1 (SC1102)?
<EXT2>
Is CVBS signal sent to pin (20) of SCART2 (SC1101)?
<EXT1>
Is CVBS signal sent to pin (6) of IC1502(SW.)?
<EXT2>
Is CVBS signal sent to pin (4) of IC1502(SW.)?
Is CVBS signal sent to pin(190) of
IC3001(MAIN_MICON) from pin(2) of IC1502?
Refer to "The picture doesn't appear in all modes."
YES
YES
YES
YES
[External input EXT1,EXT2] No picture on the display (4)
NO
NO
YES
NO
NO
YES
NO
YES
LC-32RD8E/S/RU-BK/GY (1st Edition)
NO
Check if the line between IC207 and IC4001 and the control signals
FESCL and FESDA are normal.
NO
Check the X4001 and their peripheral circuits.
NO Check if IC4001, IC4201(SDRAM), IC4251(FLASH_MEMORY) and
IC4202(B+2.5V_REG) are normal.
NO
Check the line between IC4001 and IC3001.
(IC1401, IC1001, Q1031, etc)
Check the setting of an external input device that connects of SC1102.
Check the setting of an external input device that connects of SC1101.
Check the line between SC1102 and IC1502
Check the line between SC1101 and IC1502.
Check the line between IC1502 and IC3001.
(SCART12_LINE, etc.)
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