System 720 (130-1267) Troubleshooting Faxback Doc. # 7641 If you have followed the instructions, and are having difficulty operating your unit and remote control, locate the SYMPTOM in the left column below. Check the corresponding POSSIBLE CAUSE and CORRECTIVE ACTION columns to locate and remedy the problem. AMPLIFIER SECTION SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION No sound. The display Faulty AC power plug Examine the plug. Old panels and indicators connection to the AC wall outlets sometimes do not light when the wall outlet. cause a loss of power. POWER button on the unit is set to ON. Unit is set to the Press the AUX Function standby mode. Selector button on the front panel for approxi- mately 5 seconds. The display panels Faulty connection of Connect the cables firmly and indicators light the speaker cables. to the speaker terminals. but no sound (or very weak sound) is heard. The program source Select the desired program has been selected source with the Function incorrectly. Selector buttons. The VOLUME control Turn up the VOLUME is set to its minimum control. position. The TAPE Function Set the TAPE Function Selector is ON. Selector to OFF (TAPE indicator OFF), except when playing a tape. The MUTE indicator Press the MUTING button is ON. on the remote control. Headphones are Disconnect the headphones. connected to the PHONES jack. Sound is heard from Faulty connection of Connect the cable firmly only one speaker. one speaker cable. to the speaker terminal. The BALANCE control Reset the BALANCE control is set fully to one to its center position. side. The unit cannot be The POWER button on Set the POWER button on switched ON and OFF the unit is set to the unit to ON. with the remote control OFF. The unit does not The batteries in the Check the battery respond to the remote remote control are polarity (+ and -). control. weak, or are not installed properly. Replace the batteries. The remote control is Aim the remote control at not aimed at the the infrared sensor infrared sensor window on the front window. panel of the unit. TUNER SECTION No reception even An incorrect Memorize the correct when two STATION frequency has been frequency. buttons are pressed. memorized. Weak signal. Set the FM ST/MUTE - MONO/ MUTE OFF button to MONO (ST/MUTE INDICATOR OFF). Poor FM reception. No antenna is Connect the supplied FM connected. dipole antenna to the FM ANTENNA terminals on the rear panel of the unit. Refer to the "CONNECTIONS" section. Shorted or faulty Check the connections to connection(s) the FM ANTENNA terminals between the FM on the rear panel of the antenna and the unit. unit. The antenna is not Change the position of the positioned for the antenna. Refer to the best reception. "ANTENNAS" section. Continuous hissing Weak signal. Install an outdoor FM noise during FM antenna. Use a high gain reception, especially antenna if the broadcast when a stereo broadcast station is far away. is received. STEREO indicator Weak signal. Install an outdoor FM flickers. antenna. Adjust the position of the FM dipole antenna. Continuous or Noise caused by Keep the unit away from intermittent hissing motors, fluorescent noise sources. noise during AM lamps, lightning, reception, especially television, etc. at night. A humming noise can The power cord may Position the power cord be heard during AM be too close to the away from the AM Loop broadcast reception. AM loop antenna. antenna. Adjust the position of the AM loop antenna. NOTE: The wrong type of antenna or an improper antenna installation are frequent causes of poor FM reception. Carefully read the instructions given in the "ANTENNAS" section. CASSETTE DECK SECTION The tape does not The AC power cord on Plug in the AC power move. the unit is not plugged cord. in. The cassette is not Insert the cassette inserted properly. properly. The TAPE 1 PAUSE button Press the TAPE 1 PAUSE is set to ON. button again. No sound during The TAPE Function is not Press the TAPE Function Playback. selected. Selector button (TAPE indicator ON). The RECORD button The erase guard tabs on Use another cassette, cannot be pressed. the cassette have been or cover the erase removed. guard tab openings in the cassette with tape. The deck will not The tape heads are Clean the heads. record. dirty. The DUBBING button is Set the DUBBING button set to ON (button IN). to OFF (button OUT). Poor treble sound. The tape heads are Clean the heads. dirty. Previously recorded The erase head is dirty. Clean the erase head. material is not (or only partly) erased. Recordings have The tape heads are dirty. Clean the heads. background noise. CD CHANGER SECTION Disc play does not The disc is loaded upside Reload the disc with start. down. the label side up. The disc is dirty. Clean the disc. No sound. The CD Function is not Press the CD selected. Function Selector button (CD Function display ON). Sound skips. The unit is subject to Change the install- vibration or physical ation location. shock. Defective or deeply Play another disc. scratched disc. Programmed play does The unit is in the normal Press the STOP function. play mode. button, then enter a program. (br/all-9/19/94