Service manual

MODEL: L423FR
Page 35
3-2. No each(L or R) of audio output generated.
YES
YES
NO
BALANCE level is center. It adjusts BALANCE to center.
Is all harness connected correctly?
(Especially between -DCDC and SPEAKER(J6EA-SPEAKER))
Poor harness connection or
defective cable.
NO
Enter audio input signal. ( ex. Component)
Problem is in IC670 or IC680 or their
peripheral circuits.
Please exchange PWB-MAIN
3-3.
No woofer of audio output generated.
YES
Is all harness connected correctly?
(Especially between -DCDC and SPEAKER(J6EA-SPEAKER))
Poor harness connection or
defective cable.
NO
Enter audio input signal. ( ex. Component)
Problem is in IC6A0 or IC6C0 or IC870
their peripheral circuits.
Please exchange PWB-DCDC.
3-4.
No HDMI audio output generated.
In case of no HDMI audio output generates, problem is in IC500 or IC602 or their peripheral
Circuits. Please exchange PWB-MAIN.
3-5.
No each (component or INPUT or PC) audio output generated.
In case of no each (component or INPUT or PC) audio output generates, problem is in IC601
or connector of each input or their peripheral circuits. Please exchange PWB-MAIN.