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TROUBLESHOOTING
2.2 LED Blinking: 3x (AUD_ ERR) – XR-*A75L
Audio Amp PVDD
CN1700 Pin15,17,19
Audio Amp PVDD-
GND check
Measure impedance
between CN1700 Pin
15/17/19 and GND.
Short = NG
Audio Amp PVDD-Voltage
check
Measure Voltage at CN1700
Pin 15/17/19 and GND.
For 55"/65" (18V ~ 24.3V)
Else; NG
Audio Amp Fuse
F6605
Audio
F6604
AMP(IC6601)
Caution: Before start do checking point, please ensure TV in
"Power Off" Condition for Continuity check
For Fuse open check
Measure continuity of Fuse F6604, F6605
Open = NG
Audio
AMP(IC6602)
Audio Amp DVDD
C6604
Audio
AMP(IC6001)
Audio Amp DVDD-GND check
Measure impedance between DVDD
and GND at capacitor C6604
Short = NG
71
SYS SET
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