39
LC-26D4U
LC-32D4U
LC-37D4U
TROUBLE SHOOTING TABLE
(Continued)
YES
YES
YES
YES
YES
NO
NO
NO
NO
No monitor audio output when receiving digital
broadcasting
Does IC5708 (AUD_AMP) function well?
Check the digital unit.
Check IC5704 and its peripheral circuits.
NO
Check between P3101 and IC1
108.
(Q1
107, Q1
108, etc.)
Check IC5708 and its peripheral circuits.
Check from the connector (DS, P3101) of
A
V_UNIT
to the periphery of IC5704.
Is digtal audio signal supplied from the digital unit
to pins (4) and (7) of
A
V_UNIT
connector (DS,
P3101)?
Are the analog-converted audio signals outputted
to output terminal pins (1
1) and (8) of IC5704?
Are audio signals supplied to the input terminal
pins (1)/(4) and (1
1)/(12) of IC1
108?
Are signals I2SLRCLK, I2CDA
T
A, I2SSCLK and
AUDMCLK inputted to the input terminals (pins (1)
to (4)) of IC5704 (DAC)?
NO
YES
NO
NO
NO
YES
NO
YES
YES
YES
YES
YES
No sound comes out. (2)
Are audio output pins (37) and (36)
(SC1_OUT_L/R) of IC2501 (MUL
TI_SOUND_
PROCESSOR) as specified?
Are audio output pins (7) and (1) of IC2504
(EQ_AMP) as specified?
Are audio output pins (3) and (13) of IC1
108 as
specified?
Check the line from IC1
108 to the MONIT
OR
OUTPUT
(J1
106) terminal.
Are the audio signals inputted to input terminal
pins (2) and (5 ) and pins (14) and (15) of IC1
108
(AUDIO_SW)?
No monitor audio output comes out.
Is the audio output of monitor output set to
"V
ariable"?
Check IC2501 and its peripheral circuits.
Reset the audio output of monitor output to
"Fixed".
Check IC2504 and its peripheral circuits.
Check the line from IC2504 to IC1
108.
Check IC1
108 and its peripheral circuits.
Is the control signal inputted to pin (10) of IC1
108
as specified?
