Sharp lc-32rd8, Руководство по обслуживанию

Страница: 46 / 118

LC-32RD8E/S/RU-BK/GY (1st Edition)
4 – 7
No sound from external input devices (5)
Does not the sound of the audio signal input to EXT6/7(HDMI) go out?
Is picture of the signal input from EXT6/7 displayed?
NO
Refer to “Does not the picture of the HDMI signal input to EXT6/7 go
out?”
YES
Is the HDMI_SCK/ WS/ SD0 audio signal output from
pins(86), (85), (84) of IC1951(HDMI RECEIVER) to
pins(39), (40), (38) of IC3001 (MAIN_MICON)? NO
Check the line between IC1951 and IC3001, and their peripheral cir-
cuits.
YES
Refer to “No sound output in all modes”.
The audio signal is not output (1)
No audio signal output from SCART1 terminal.
Is audio signal sent to pins(3/L-ch), (1/R-ch) of
SCART1(SC1102)?
YES
Check the connection to SCART1 and external input devices.
NO
Is S-MUTE-LINE [pin(62) of IC2302(SUB_MICON)] at H?
YES
Check the peripheral circuits of IC2302 and S-MUTE_LINE.
(Q1101, etc.)
NO
Is audio signal sent to pins(24/L-ch), (23/R-ch) of
IC3001(MAIN_MICON)?
YES
Check the line between SC1102 and IC3001.
(Q1106, Q1105, etc.)
NO
Check IC3001 and its peripheral circuits.