Harman-Kardon HD 990 - Manual (Page 13)

13
HD 990
Troubleshooting
Symptom Cause Solution
no lights on front panel no ac power • make certain that ac power cord is plugged into a live outlet. •
remote does not appear to operate power switch turned off •
Weak batteries •
Blocked sensor •
turn on power switch. •
Install fresh batteries, observing polarity indications. •
remove obstructions from the front panel sensor or connect a remote •
sensor to the remote In jack on the rear panel.
front panel lights, but cd does not play disc is upside down • reload disc with label side facing up. •
play indicator lights, but no sound is heard poor connections •
Wrong source connections •
make certain that connections are secure and made to the correct •
(e.g., cd) input.
select cd source on receiver or preamp.
•
sound skips or stutters during play disc may be damaged •
surface vibrations •
try another disc. •
Isolate the unit from vibration by placing it on a firm surface or move •
it further away from the speakers.
sound is continually distorted Incorrect input • make certain that the analog • audio outputs 1 of the cd player
are connected to a line-level audio input, not to a digital audio or
phono input.
“error” lights up continuously in the display Various • turn the unit off and on again. If the problem persists, turn the ac •
power to the cd player off and on.
Troubleshooting