LC-32/40/46LE600E/RU/S (1st Edition)
5 – 7
No sound from external input devices (2-1)-1
No sound from EXT1 (SCART1) connecting an external input
device.
<EXT1>
Is the SC1_IN_L (SCART1-L-IN) audio signal input from pin (6)
of SCART1 terminal (SC503) to pin (44) of IC1302 (A-SW)?
Is the SC1_IN_R (SCART1-R-IN) audio signal input from pin (2)
of SCART1 terminal (SC503) to pin (43) of IC1302 (A-SW)?
NO Check pins (6) (2) of SCART1 and connection of an external
input device.
YES
Is the audio signal (A_IN_L/R) properly output from pins (6) and
(7) of IC1302 (A-SW)?
NO Check S9V power supply (10) (15) pin, D3.3V power supply (3)
(36) pin, and SDA0/SCL0 signal (28) (27) pin of IC1302 (A-SW)
or the peripheral circuit.
YES
Is the audio signal (A_OUT_SP_L/R) properly output from pins
(H26) and (H25) of IC3303 (VCT)?
NO Check D3.3V power supply pin (F18) of IC3303 (VCT) and the
soldering confirmation or the peripheral circuit.
YES
It is the same as the above-mentioned A-BLOCK.
No sound from external input devices (2-1)-2
No sound from EXT2 (SCART2) connecting an external input
device.
<EXT2>
Is the SC2_IN_L (SCART2-L-IN) audio signal input from pin (6)
of SCART2 terminal (SC502) to pin (46) of IC1302 (A-SW)?
Is the SC2_IN_R (SCART2-R-IN) audio signal input from pin (2)
of SCART2 terminal (SC502) to pin (45) of IC1302 (A-SW)?
NO Check pins (6) (2) of SCART2 and connection of an external
input device.
YES
Is the audio signal (A_IN_L/R) properly output from pins (6) and
(7) of IC1302 (A-SW)?
NO Check S9V power supply (10) (15) pin, D3.3V power supply (3)
(36) pin, and SDA0/SCL0 signal (28) (27) pin of IC1302 (A-SW)
or the peripheral circuit.
YES
Is the audio signal (A_OUT_SP_L/R) properly output from pins
(H26) and (H24) of IC3303 (VCT)?
NO Check D3.3V power supply pin (F18) of IC3303 (VCT) and the
soldering confirmation or the peripheral circuit.
YES
It is the same as the above-mentioned A-BLOCK.
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