Sharp LC-32D65E Service Manual page 54

LC-32D65E/RU, LC-37D65E/RU
<LC-32/37DH65E>
No picture appears on EXT1/EXT2 connected monitor during the DTV(H.264) reception.
Is CVBS signal output into pin (19) of EXT1 (SC502) from pin
(67) of IC503 (AV_SW)?
Is CVBS signal output into pin (19) of EXT2 (SC501) from pin
(65) of IC503 (AV_SW)?
Is H.264_CVBS signal input to pin (28) of IC503 (AV_SW)?
Is H.264_CVBS signal output from pin (C34) of IC5001 (H.264
DECODER)?
Check the IC5001 and its peripheral circuits.
No picture from EXT1 appears on EXT2-connected monitor.
Is CVBS signal output into pin (19) of EXT2 (SC501)?
Is CVBS signal output to pin (65) of IC503?
Is CVBS signal sent to pin (100) of IC503?
Is CVBS signal sent to pin (20) of EXT1(SC502)?
Check the setting of an external input device that connects with
EXT1.
<During external connection> No picture on the monitor (3)
NO
NO
NO
<During external connection> No picture on the monitor (4)
NO
NO
NO
NO
YES Check the setting of an external input device that connects with
EXT1.
YES Check the setting of an external input device that connects with
EXT2.
YES Check the IC503 and their peripheral circuits.
YES Check the line between IC5001 and IC503.
YES Check the setting of an external input device that connects with
EXT2.
YES Check the line between IC503 and EXT2 (SC501).
YES Check the IC503 and peripheral circuits.
Is the I2C SERIAL DATA/CLOCK communication normal?
Pin32: SDA1/Pin31: SCL1
YES Check the line between EXT1(SC502) and IC503.
4 – 15
YES