Onkyo TX-8511 Owner Manual - Page 27

Troubleshooting guide If a problem occurs, while you are using the remote control, first operate the unit using, the front panel controls to confirm that it is not due to a malfunction (or expired batteries) of the remote control. Trouble No power Power but no sound Cause • Power cord is disconnected. • There is external noise in the computer circuits of this unit. • AC fuse is blown. • T-2 MONITOR indicator is lit. • AUDIO MUTE indicator is lit. • Bad/incorrect connections. • Amplifier protection circuitry has been acti- vated. Remedy • Connect power cord. • Turn the power switch off, and then on again or remove the AC plug from the outlet and.then plug it again. • Contact your Onkyo Service Center. • Switch off. • Switch off with the remote control. • Check connection cables, speaker cables, etc. • Contact your Onkyo Service Center. Hum, low-frequency noise • Poor or no input ground. • Poor or no phono motor ground. • The placement of the audio connection cables on the rear panel is incorrect. • Check outer conductor of input plugs. • Check for proper ground connection. • Adjust the placement of the cable to reduce hum. Howling when the volume is turned up • Turntable and speakers are too close together. • Move them farther apart. Rough or scratchy sound; High range is not clear • Stylus of turntable pick-up is worn. • Turntable stylus tip is dirty. • Treble control is too high. • Replace. • Clean. • Turn treble control down. AM stations cannot be received. • AM loop antenna is not attached. • Connect the included AM loop antenna to the AM antenna terminals. . Buzzing noise on AM (particularly conspicuous at night or with weak stations) • Noise from electrical apparatus such as fluorescent lamp_ • Move the AM loop antenna to a different position. • Set up an outdoor AM antenna. High-pitched noise or buzzing noise on AM • Noise from the TV set_ • Place the AM loop antenna as far as possible from the TV. • Move unit away from TV set. Crackling noise on AM or FM • Noise caused by turning fluorescent lamp on and off. • Noise from automobile ignition. • Move antenna as far as possible from the fluorescent lamp. • Install an FM outdoor antenna as far as possible from the road. • Change the position or direction of the outdoor antenna. FM TUNED and STEREO indicators light but sound is distorted and stereo separation is bad. FM TUNED and STEREO indicators flicker and hiss is heard on FM. No station is recalled when a PRESET or SCAN button is pressed. The RDS function does not work. (European and some other models only) • Station is too strong. • Multiple reflection of the radio waves because of tall buildings or mountains. • Station is too weak. • Stereo FM broadcasts cover only about hall the distance of an ordinary broadcast, • The power cord has been unplugged for a long time. • Change to a T-shaped antenna. • Use an antenna which has better directivity and select a point where the distortion is least. . • Install an outdoor FM antenna. • Change the position or direction of the outdoor antenna. • The memory contents are lost. Store all staLions again. • It is not RDS station_ • The reception station signal is too weak. • Too much interference_ • Receive an RDS station. • Install an outdoor FM antenna. • Change the position or direction of the outdoor antenna. • Move the antenna as far away as possible from the fluorescent lamp. • Install an outdoor FM antenna as far away as possible from the road. Front panel controls function, • No batteries in remote control. but remote control does not. • Batteries have worn out. • Insert batteries. • Replace batteries. • Also refer to the respective instruction manuals of the video disc player, video cassette recorder, TV monitor, etc., being used. 27