Korg PA3X, Service Manual, Page: 93 / 125

Audio test
In Audio test SPDIF, Audio Output and MP3.output signals are checked
S/PDIF – 2 step
S/PDIF Left
S/PDIF Right
Check SPDIF output level (typical 0,5Vpp) by using a digital tool
Step 1 Left Out Step 2 Right Out
Mp3 Board - 5 step
1-5 Sampling Mode MX1 loop
2-5 Play 1 Left
3-5 Play 1 Right
4-5 Play 2 Left
5-5 Play 2 Right
Connect oscilloscope probes to Out1 and Out2 connected MONO jacks and check output
levels: testing is automatic in mp3 step 1, press next to continue
Play 1 typical left level 16Vpp +/- 0,5Vpp Play 1 typical right level 16Vpp +/- 0,5Vpp