6. No Audio Output during OPT Playback
Check each part listed after "
4. Audio PCB Abnormalities and no Audio Output (Line Out, Variable Out,
".
Check output of digital audio waveform.
PLD[
U3013
]
MAIN PCB
[
L3025
]BCK/DBCK, [
L3024
]LRCK/DSD_DATAL, [
L3023
]PCM_DATA/DSD_DATA
Check output of digital audio waveform during playback of OPT
input signal.
MAIN PCB
DIR[
U3007
]
[
R3181
]BCK, [
R3180
]LRCK, [
R3179
]DATA
Check the following areas to identify the area where the S/PDIF
signal is cut off.
Malfunctions in the OPT INPUT terminal
Power supply voltage of input buffer IC[U3011], input/output
There is a malfunction in the communication between the following areas or in PLD[U3013].
PLD[
U3013
] and MCU[
U3001
]。
Replace PLD [
U3013
] or the MAIN PCB.
Check the S/PDIF input signal.
MAIN PCB
DIR[
U3007
], [
R3151
] OPT IN
There is a malfunction in the communication between the following areas or in DIR[U3007].
DIR[
U3007
] and MCU[
U3001
]。
Replace DIR [
U3007
] or the MAIN PCB.
NO
YES
YES
YES
NO
NO
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
49