Service Manual
Page 13
... test tone sound output from front left speaker of test tone) STR-K880/K900 13 "SWP.ALL" appears. (No change accordingly. DCAC AUTO CAL MIC board Checking Start DSP Data Line Pass Check Auto Cal Mic Check Pass END Factory Test System Setup Receiver DCAC MIC SPK Front Left 1. Turn MASTER VOLUME jog, there...
... test tone sound output from front left speaker of test tone) STR-K880/K900 13 "SWP.ALL" appears. (No change accordingly. DCAC AUTO CAL MIC board Checking Start DSP Data Line Pass Check Auto Cal Mic Check Pass END Factory Test System Setup Receiver DCAC MIC SPK Front Left 1. Turn MASTER VOLUME jog, there...