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LC-32/40/46LE600E/RU/S
No audio output from EXT2 (SCART2) terminal.
Checklist:
1) Is the MUTE button on the remote control set to ON? •••• Set to OFF.
2) Check the connection to external devices. ••• Is there any improper connection?
Is audio signal output to pins (3) and (1) of EXT2 (SCART2)
(SC502)?
Is the SC2-MUTE signal of base (5) (2) pin of Q501 "H"?
Is the audio output signal (MONITOR_OUT_L/R) output from
pins (19) and (20) of IC1302 (A-SW) normally?
Isn't there problem in the power supply input (S9V, D3.3V) of
IC1302 (A-SW), I2C_0 signal (SDA0/SCL0), and defective sol-
dering, etc.?
Where is the input source of the sound from?
(EXT1, EXT2, EXT3, EXT4, EXT8)
Check whether there is any problem in each input (terminal).
No sound of external device (3-1)-2
NO
YES
NO
YES
YES
Check EXT2 (SCART2) (SC502) and the connection to an exter-
nal device.
NO
The Q501 base should usually be "L".
If it is "H" signal, Check whether base of Q1301 is "L" or periph-
eral circuit.
YES
Check whether there are problems in IC1302, Q503, Q504 and
Q501 or peripheral circuits.
NO
Repair the faulty point around IC1302.
EXT1/2: SCART1/2
Check pin (44) (43)/(46) (45) of IC1302 and pin (6) (2) of EXT1/2
terminal (SCART1/2).
EXT3: COMP
Check pin (48) (47) of IC1302, and pin (2) (4) of EXT3 terminal
(J502).
EXT4: PC/HDMI
Check pin (50) (49) of IC1302, and pin (2) (3) of EXT4 terminal
(J501).
EXT8: CVBS
Check pin (52) (51) of IC1302, and pin (5) (4) of EXT8 terminal
(J505).
5 – 10
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