LC-32/37D64U
6 – 13
No monitor audio output
Is the audio output from the monitor set at “VARIABLE” or
“FIXED” on the menu screen?
NO Check the bus line(SCL0/SDA0) and IC1403.
YES
Are there the audio signal outputs at pins(24)(LINE_L) and
(25)(LINE_R) of IC1403(CODEC)?
NO Check IC1403 and its peripheral circuits.
YES
Does the audio signal come from pins(24)(LINE_L) and
(25)(LINE_R) of IC1403 to pins(47) and (49) of SC2203 on the
MAIN unit?
NO
Check the line between IC1403 and SC2203.
YES
Are there the audio signal inputs at pins(47)(LINE_L) and
(49)(LINE_R) of SC501 on the TERMINAL unit?
NO Check the line between SC501 and SC2203 connectors.
YES
Does the audio come from pins(47)(LINE_L) and (49)(LINE_R)
of SC501 to pins(4)(L) and (2)(R) of J505?
NO Check the line between J505 and SC501, and their peripheral
circuits.
Check the LINE_MUTE line and its peripheral circuits.(Q507 thru
Q509, etc.)
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