Audio (S/Pdif, Optical) - NAD M56 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

6. AUDIO (S/PDIF, OPTICAL)

No Audio
R6E9
Digital audio
output OK?
YES
JK601 Red
lighting OK?
YES
S/PDIF, OPTICAL
audio out OK?
NO
IC201 Check
NO
JK601(Pin2)
+5.0V OK?
JK601 Re-soldering
3-33
NO
YES
IC702 Check