Yamaha TX-670RDS Owner's Manual page 14

To turn the unit into the PS mode or PTY mode
Press the FREQ/PS/PTY button. Whenever pressed, the mode changes into the PS mode, PTY mode and returns to usual mode in
turn.
* When an RDS station is received, the display is automatically turned into the PS mode.
PS/PTY SEEK
FREQ/PS PTY SHIFT
Note
When PS or PTY data reception is not possible due to poor reception conditions, "NO PS" or "NO PTY" flashes on the display in
each mode. In such a case, use the BLEND, IF MODE and/or MODE buttons to improve sound quality. After that, when you
changes to the PS or PTY mode, PS or PTY data will be displayed.
14
PS mode
PTY mode
ENTER
Usual mode
The name of the station being received is displayed.
(If you had stored a name of your own giving to the station,
the name is displayed.)
If the station is not an RDS station, "NO PS" flashes on the
display and then returns to usual mode.
A program type for the station being received is displayed.
If the RDS station does not employ the PTY data service,
"NO PTY" flashes on the display and then returns to the PS
mode.
If the station is not an RDS station, "NO PTY" flashes on the
display and then returns to usual mode.
The frequency of the station being received is displayed.
(If you had stored a name of your own giving to the station,
the name is displayed.)