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No sound comes out. (1)
out at UHF/VHF reception. No external input sound comes out.
YES <INPUT-1>
Is the R-ch audio signal inputted from (2) input terminal J1101 to pin (14) of IC3812? specified?(TU1101/TU1102_Pin7) circuits. <INPUT-2> Check the peripheral of filter circuits <INPUT-3> (Q1145, Q1105-6) (Q1110, Q1117-8). Is the L-ch audio signal inputted from (5) input terminal J1106 to pin (11) of IC3805? (69) (SOUNDIF2) of IC2501 (MULTI_SOUND_PROCESSOR) as specified? Is the R-ch audio signal inputted from (2) input terminal J1106 to pin (1) of IC3812?
Is SIF output from the tuner as NO Check TU1101/1102 (UV tuner) and its peripheral Is the L-ch audio signal inputted from (8) input terminal J1101 to pin (14) of IC3805?
YES Is the L-ch audio signal inputted from (6) input terminal J1101 to pin (15) of IC3805?
Is the input signal to (67) (SOUNDIF1) and pin Is the R-ch audio signal inputted from (3) input terminal J1101 to pin (15) of IC3812? NO
YES <INPUT-4>
Is the L-ch audio signal inputted from (2) input terminal J1900 to pin (5) of IC3805? Is the digital audio signal (HDMI_AMCLK) inputted from (29) IC1912 to pin (43) of IC2702? <INPUT-5> Are the audio signals from pins (34) and (33) (SC2_OUTL/R) IC2501 to pins (32) and (33) of Is the R-ch audio signal inputted from (3) input terminal J1900 to pin (5) of IC3812? IC2702 (DIR) as specified?
Check the lines from pins (34) and (33) NO (SC2_OUTL/R) IC2501 to pins (32) and (33) of IC2702.
YES YES
Is the R-ch audio signal outputted to pin (3) of IC3812? and (29) of as specified? inputted/outputted from IC2702 to IC2700 (DSP) normally? YES
the audio outputs (A-OUT_L/R) from pins (28) NO Are signals LRCK, BICK, and SDTO Is the L-ch audio signal outputted to pin (3) of IC3805?
YES Are the audio signals inputted to pins (56) (L-ch) and (57) (R-ch) of IC2501?
Check IC2702 and its peripheral circuits. YES
YES
Are audio outputs Check the lines from pins (28) and (29) of IC2702 to pins (13) and (15) of P3801 (1-bit amplifier amplifier input) as specified? input).(IC3802, Q3805-6)
NO IC2702 to pins (13) and (15) of P3801 (1-bit
YES
Check the 1-bit amplifier and its peripheral circuits. each terminal of P8003?
Is signal from the 1-bit amplifier inputted to NO
YES
TROUBLE SHOOTING TABLE (Continued)
29
Is relay normally switched from P6003 on the AV PWB to RY6001 (speaker switching)?
LC-32GA3E LC-37GA3E
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