Yamaha RX-V681 Service Manual page 39

● Details of Self-Diagnostic Function menu
A1. DSP AUDIO
This menu is used to check audio signal route via DSP.
A1-1. DSP THROUGH
The audio signal is output including the head margin via DSP.
* When input source is stereo, signal is assigned as below.
Front L:
Front R:
Front L +10 dB:
A1-2. INVALID ITEM
Not for service.
A2. DIRECT AUDIO
This menu is used to check audio signal route of PURE DIRECT mode.
A2-1. DIRECT VH
The analog input audio signal is output to FRONT L/R in PURE DIRECT mode.
VH: Voltage High, RY101 on MAIN (1) P.C.B.: Off
* RY101: Power amp power voltage H/L switching relay
Front L, Center, Surround L, Surround Back L
Front R, Surround R, Surround Back R
Subwoofer
A1-1
DSP THROUGH
A1-2
INVALID ITEM
A2-1
DIRECT :VH
RX-V681/RX-A760
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