Sony STR-DE845 Training Manual page 24

5. Analog Signal Block
NOTE: There is no data present on the SOB and SOC lines in the following sound fields: Mono, Stereo and all
Hall modes. There is data only on SOA in these modes. Channel designation for SOA, SOB and SOC are as
follows:
SOA ———— Front left/right
SOB ———— Center/Subwoofer
SOC ———— Rear left/\right
WAVEFORM 5-3
WAVEFORM 5-4
IC1301 (SOA) Pin 24
IC1301 (SOB) Pin 23
WAVEFORM 5-5
IC1301 (SOC) Pin 22
IC1503 takes the three inputs at pins 6 (SDI 1), 7 (SDI 2) and 8 (SDI 3), performs the D/A conversion and
decodes the signal into the 5.1 Channel signals (Left, Right, Center, Subwoofer, Left Surround and Right Surround).
At this point, all the signals are analog and easy to trace through IC1507, IC1506 and IC1505, and then onto the
power amplifier stages.
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