Yamaha DDP-1 (1995)   

 AUDIO INPUTS

   Coaxial Digital Audio x 1
   Optical/TOSLINK Digital Audio x 1
   AC3RF Input from your Player AC3RF output (RCA) x 1

 AUDIO OUTPUTS

   RCA 5.1 channels x 1

Internal DAC for Multi-channel => PCM1710 (Burr-Brown)

To put the Yamaha DDP-1 in TEST MODE:

1. Plug unit into AC power and make sure unit is OFF.
2. Push both the MODE and MENU button simultaneously.
3. Push the POWER button ON.

The screen will show:

DDP DIAG V13 AC-3 DECODER

Then the screen will change after a second or two to:

PCM L/R :COAX DIR UNLOCK /A2

Now the MODE button can be used to change what is after the colon to:

RF, OPT, or COAX

The MENU button is used to bring up the settings for surround sound speakers, low frequency enhanced speaker, Pro-Logic input, AC-3 input, and test tone.

The PARAMETER button brings up a slew of other diagnostic and sound settings.