Service Manual
Page 11
...STR-DE197 4-1. Not used . (Open) 52 +5V - Not used . (Connect to FM/AM tuner pack. 51 - - LED O BASS BOOST LED drive signal output 54 SPK A LED O SPEAKER A LED drive signal output 55 SPK B LED O SPEAKER B LED drive signal output 11 Power supply... 19 STEREO I Sircs signal input from remote control receiver IC. 50 TUNER MUTE O Muting control signal output to AV.REF ... DRIVER) Pin No. A/D converter power supply pin (+5 V) 30 AV.REF - A/D converter reference voltage input (+5 V) 31 - - Ground 49 SIRCS I STEREO indicator detection signal input from FM/AM...
...STR-DE197 4-1. Not used . (Open) 52 +5V - Not used . (Connect to FM/AM tuner pack. 51 - - LED O BASS BOOST LED drive signal output 54 SPK A LED O SPEAKER A LED drive signal output 55 SPK B LED O SPEAKER B LED drive signal output 11 Power supply... 19 STEREO I Sircs signal input from remote control receiver IC. 50 TUNER MUTE O Muting control signal output to AV.REF ... DRIVER) Pin No. A/D converter power supply pin (+5 V) 30 AV.REF - A/D converter reference voltage input (+5 V) 31 - - Ground 49 SIRCS I STEREO indicator detection signal input from FM/AM...