TU 940 - Harman Kardon Audio Service Manual (repair manual). Page 6

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13. DIRECT
Pressing this button will start the sequence for direct entry of a station’s frequency. After
pressing the button simply press the proper Numeric Keys 
2
 to tune the station. For more
information see next page.
14. DISPLAY
Press to display current frequency, station name or RDS information. Press again to move to
the next item in the following order:
If a non-RDS-station is tuned:
Frequency, station name (if a name is entered manually). If an RDS station is tuned: Station
Name, Band and Frequency, Program Type (PTY), Radio Text, Time.
If an RDS station is tuned (only FM) indicators for available RDS information will be shown next
to the red RDS indicator in the display: PTY (Program Type), RT (Radio Text) or CT (Clock
Time) will light up, if the station is broadcasting this information. The RDS information available
will vary.
15. FM MODE
Press to change mode of FM reception.
Press so that the MONO indicator is not lit and all stations received with a signal strength high
enough for acceptable audio performance will be heard, either in stereo (the red stereo indicator
is lit) or in mono, just as they are transmitted. The sound of all weaker stations will be muted.
Press so that the MONO indicator is lit and all stations, including all stereo transmissions, will be
heard in mono.
NOTE: When experiencing weak or noisy reception of a stereo broadcast, reception quality may
be improved by pressing FM MODE to switch to mono.
16. RF MODE (FM TUNING ONLY)
Press to compensate for RF intermodulation noise caused by interference from other strong
stations in your area.
In urban areas or with cable systems where reception is strong and there are many stations,
press until LOCAL indicator is lit, This will attenuate the signal strength of all stations received
( RF LEVEL indicator bars in the display will show lower signal strength) and thus may reduce
intermodulation noise and provide better sound quality.
When tuning distant stations, press so that the local indicator is not lit. This improves the tuner’s
ability to receive weak signals with lower noise, and  – when needed  – press the FM MODE
button 
15
 until the MONO indicator is lit to make weak station audible.
17. AUTO/MANUAL
Press so that the AUTO indicator is lit to engage the automatic tuning system. When in the
AUTO mode, turning the TUNING knob 
10
 cause the tuner to scan for the next available station
with sufficient signal strength and stop. Turn the Tuning knob again to continue through the
frequency band to the next station.
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