5. DIAGNOSIS
[1] Audio Section Troubleshooting
No Sound Produced
Other
Specific Function
• Perform NETWORK
Diagnosis
[Distinction the Symptom]
• Does the symptom occur only with a specific function?
(HMG, HDMI System, Others)
• Does the same symptom occur with more than one function?
[Distinction between analog and digital problem]
Set the speaker setting to "Large" for all the channels.
Set the function to "Multi Ch In".
Set the listening mode to "Pure Direct".
Fix the signal switching to "Analog".
NGOK
[Distinction between preout and power problem]
• Is the pre-out output?
Failure in power
amplifier
• Perform ICEPOWER
Diagnosis
NG
OK
Failure in analog
small signal block
[Distinction between AD line and other digital problem]
• Is the sound produced with the digital input?
# With the signal switching set to "Auto".
NG
OK
Failure in
A/D converter
More than
one function
[Distinction between DSP and other problem]
Input the PCM (such as CD) signals.
Change the listening mode to "Pure Direct (PCM Direct)".
Set the signal switching to "Auto" or "PCM".
NGOK
Failure in DSP
• Perform DSP
Diagnosis
Failure in DIR
[Distinction between DIR and other problem]
• Is the input assumed to be digital with
the signal switching set to "Auto"?
(Is DIR locked in digital?)
Failure in D/A
converter
OK NG
HDMI System
Function
(BD, HDMI IN1-3)
HMG
Function
• Perform HDMI
Diagnosis
• Failure around the
circuit from input
terminal to the switch
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