Harman Kardon AVP-2 Owners Manual - Page 10

TROUBLESHOOTING SYMPTON PROBABLE CAUSE SOLUTION No output from one or more channels ■ Defective cables or amplifier ■ Check or replace cables or fuses ■ Verify that signal source is operating and providing proper signal output to the power amplifiers ■ Verify proper operation of remote control No center channel output ■ Amplifier not turned on ■ Check amplifier and interconnect cables ■ Center button on remote not engaged ■ Verify proper operation of remote control Poor or smeared imaging ■ Poor room acoustics ■ Poor program source ■ Improper speaker polarity ■ Use absorption or diffusion materials on walls ■ Check another program source ■ Source is snythesized stereo from mono source ■ Check hookup of speakers to verify polarity Indistinct dialog ■ Slap echoes ■ Miscalibration of center channel ■ Add absorption or diffusion materials on floors and walls ■ Check levels using noise sequencer and sound pressure level meter ■ Center channel speaker does not match left/right speakers with respect to efficiency, phasing, or frequency response Clipping distortion ■ Inadequate power amplifiers ■ Subwoofer level too high ■ Excessive room absorption ■ Poorly recorded program source ■ Excessively high playback levels ■ Bass EQ level too high ■ Use more powerful amplifiers ■ Adjust subwoofer output level ■ Remove absorptive materials selectively ■ Try alternative program source ■ Reduce playback levels ■ Reduce Bass EQ level Too little or too much bass ■ Misadjusted subwoofer level ■ Severe room modes or bass loss due to room construction ■ Incorrect setting of Bass EQ level ■ Adjust subwoofer output level ■ Move subwoofer(s) to improve performance ■ Re-adjust Bass EQ level Uneven surround coverage ■ Poor speaker placement, strong reflections ■ Excessive absorption near surrounds ■ Add absorption or diffusion materials ■ Remove absorptive material near surrounds 9