Yamaha DSP-A970 - Manual (Page 46)

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PROBLEM POSSIBLE CAUSE WHAT TO DO
Power does not come on. AC cord not properly plugged in. Carefully plug AC plug into outlet.
Hum. Bad cable connection. Firmly plug in all connection cables.
No sound. Bad or incorrect input connection. Check connections.
Incorrect input source selection. Select the appropriate input source with the input selector switch.
No sound from the effect speakers. The EFFECT switch is set off. Press the EFFECT switch to turn on.
The DOLBY PRO LOGIC program is being used Use a different sound field program.
with material not encoded with Dolby Surround.
No sound from the front The FRONT MIX switch is set Set the FRONT MIX switch to “OFF”.
effect speakers. to “ON”.
No sound from the center speaker. The center mode is in “PHNTM”. Select the appropriate center mode.
Incorrect sound field program. Select the appropriate program.
The sound suddenly goes off. The protection circuit has activated because of Turning the unit off and then on will reset the protection circuit.
short circuit etc.
DSP parameters or other settings on this The “MEMORY GUARD” function is Turn the “MEMORY GUARD” OFF.
unit cannot be changed. set ON.
The sound field cannot be recorded. It is not possible to record the sound field on a
tape deck connected to this unit’s TAPE
REC OUT jacks.
The remote control unit does not function Dead batteries. Replace batteries.
properly. Wrong distance or angle. The remote control unit will function from a maximum range of 7
meters, no more than 30 degrees off-axis from the front panel.
Direct sunlight or lighting (of an inverter type of Change position of the main unit.
flourescent lamp etc.) is striking the remote
control sensor of the main unit.
Noise from nearby TV or tuner. This unit is too close to the affected Move the unit further away from the affected equipment.
equipment.
The TRANSMIT/LEARN indicator blinks Memory is full. Erase unnecessary functions.
twice when learning a function.
Continuous functions such as volume are Learning process incomplete. Be sure to press the function key on the other remote control
learned, but operate only for a moment until the TRANSMIT/LEARN indicator is extinguished.
before stopping.
TROUBLESHOOTING