Yamaha RX-V800 Service Manual page 29

No. Name I/O
154 SELI4 I+
155 VSS –
156 SELI3 I+
157 SELI2 I+
158 TESTXI I
159 TESTXO O
160 VDD2 –
Is: Schmidt trigger input terminal
I+: Input terminal with pulled-up resistor
O: Digital output terminal
Ot: 3-state digital output terminal
A: Analog terminal
Function
Built-in selector input 4
GND
Built-in selector input 3
Built-in selector input 2
Test terminal Must be connected with VSS.
Test terminal Unconnected.
+2.5V power supply (for internal circuit)
RX-V800/RX-V800RDS/HTR-5280
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