Onkyo TX-DS939 Owner Manual - Page 56

Troubleshooting guide If a problem occurs, adjust the controls on the TX-DS939 front panel to confirm that the remote controller is not malfunctioning or has worn out batteries. Trouble Cause Remedy Power, then immediately no power • The amplifier protection circuitry has been • Contact your Onkyo service center. activated. ("PROTECT" is displayed.) No power • The power cord is disconnected. • There is external noise in the computer cir- cuits of the TX-DS939. • The AC fuse is blown. • Connect the power cord. • Turn the power off and then on again, or remove the AC plug from the outlet.. • Contact your Onkyo service center. Power but no sound • The TAPE-2 MONITOR indicator is lit. • The AUDIO MUTING indicator is lit. • The connections are bad or incorrect. • The jumper plugs between the PRE OUT and AMP IN terminals are removed. • Press the TAPE-2 MONITOR button. • Press the MUTE button on the remote control. • Check the input leads, speaker leads, pin plugs, etc. • Insert the jumper plugs. Power but no sound, or sound is heard from a • The Input mode is set incorrectly. component other that selected with the input selector buttons • Set the Input mode correctly. (Refer to page 36.) No sound or very minimal sound from the center sneaker • The speaker wires are disconnected. • Surround mode is set to CONCERT HALL, LIVE, ARENA , STADIUM, OPEN AIR, NIGHT CLUB, CHURCH, DISCOTHEQUE or OFF • The Center Level is set to the minimum. • The Center Speaker Setup is set to NONE. • Check the connection between the amplifier and the speaker. • When CONCERT HALL, LIVE, ARENA, STADIUM, OPEN AIR, NIGHT CLUB, CHURCH, DISCOTHEQUE or OFF is selected for the Surround mode, only the effect sound will be output from the center speaker. The sound level will be less compared to the sound level when the DOLBY DIGITAL (AC-3), PRO LOGIC, THX CINEMA, ACTION, DRAMA, MUSICAL is selected, when the surround mode is set to OFF, no sound will output from center speaker. • Set the Center Level to the appropriate setting. • Set the Center Speaker Setup to SMALL or LARGE. Hum or low-frequency noise • Poor or no input ground • Poor or no phono motor ground • The input and output cables are incorrectly positioned. • Check the outer conductor of input plugs. • Check for a proper ground connection. • Adjust the placement of the cables to reduce hum. Howling when the volume is turned up • The turntable and speakers are too close to • Move them farther away from each other. each other. The sound is interrupted. • A noise is being produced in the operating • Use a commercially available adaptor with a built-in environment. noise filter. AM stations cannot be received • The AM loop antenna is not attached. • Connect the enclosed AM loop antenna to the AM antenna terminals. Buzzing noise on AM (particularly at night or • There is noise from other electrical equip- • Move the AM loop antenna to a different position. with weak stations) ment, such as fluorescent lamps. • Connect an outdoor AM antenna. High-pitched noise or buzzing noise on AM • There is noise from the TV. • Place the AM loop antenna as far as possible from the TV. • Move the unit away from the TV. FM TUNED and STEREO indicators flicker • The station signal is too weak. • Install an outdoor FM antenna. and a hiss is heard on FM. • The stereo FM broadcasts cover only about • Adjust the position or direction of the outdoor antenna. half the distance of an ordinary broadcast. No station is recalled when a preset button is • The power cord has been unplugged for an • The memory contents are lost. Store all stations again. pressed. extended period of time. Multi-Room Remote System does not operate. • The connections are incorrect. • The MR OFF indicator on the TX-DS939 is l it. • The remote controller is not aimed at the sensor. • The path between the remote controller and the sensor is blocked. • Check the connections. • Press the MR OFF button. (The MR OFF indicator should go off.) • Aim the remote controller at the TX-DS939 remote con- troller sensor. • Remove the object blocking the path to the sensor. Front panel controls function but remote con- • There are no batteries in the remote control. troller does not. • The batteries are worn out. • Insert batteries. • Replace batteries. Also refer to the respective instruction manuals of the other components, e.g. video disc player, video cassette recorder or TV/monitor. 57