Sharp LC-52D82U Service Manual page 62

LC-46D82U/LC-52D82U
[with HDMI connected] No audio (2)
[Audio signal] [INPUT-4] No audio (HDMI connected)
[Audio signal] [INPUT-5] No audio (HDMI connected)
[Audio signal] [INPUT-6] No audio (HDMI connected)
[INPUT-4 input] Is INPUT-4 selected on the input select menu screen?
[INPUT-5 input] Is INPUT-5 selected on the input select menu screen?
[INPUT-6 input] Is INPUT-6 selected on the input select menu screen?
Is the audio output selected for "VARIABLE" on the menu
screen?
Set the audio output to "FIXED"
YES
[INPUT-4] If no video appears, refer to "No external input video (HDMI)
[INPUT-4]"
[INPUT-5] If no video appears, refer to "No external input video (HDMI)
[INPUT-5]"
[INPUT-6] If no video appears, refer to "No external input video (HDMI)
[INPUT-6]"
Is the SII9011_MUTE line as specified?
Check Q1301, IC1303 and their peripheral circuits.
YES
Does the HDMI_SPDIF signal come from pins (78) of IC1510 to pin (2)
of IC1404 (CODEC)?
Check the line between IC1510 and IC1404 and their
peripheral circuit.
YES
Is there the audio signal output at pins (38) (L) and (39) (R) of IC1404?
Is there the audio signal output at pins (11) (L) and (14) (R) of connector (SC1301) on the
MAIN unit?
Is there the audio signal input at pins (11) (L) and (14) (R) of connector (P2704) on the
TERMINAL unit?
NO
YES
YES
NO
NO
YES
YES
YES
4 – 14
No audio in all modes (3)
YES
Check IC1404 and its peripheral circuits.
NO
Check the line between IC1404 and
SC1301.
NO
Check the SC1301 and P2704 connec-
tors.
NO