HD 990
Troubleshooting
Troubleshooting
| Symptom | Cause | Solution | ||
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| No lights on front panel | • | No AC Power | • | Make certain that AC power cord is plugged into a live outlet. | 
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| Remote does not appear to operate | • | Power switch turned off | • | Turn on Power switch. | 
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 | • | Weak batteries | • | Install fresh batteries, observing polarity indications. | 
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 | • | Blocked sensor | • | Remove obstructions from the front panel sensor or connect a remote | 
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 | sensor to the Remote In jack on the rear panel. | 
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| Front panel lights, but CD does not play | • | Disc is upside down | • | Reload disc with label side facing up. | 
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| Play indicator lights, but no sound is heard | • | Poor connections | • | Make certain that connections are secure and made to the correct | 
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 | • | Wrong source connections | 
 | (e.g., CD) input. | 
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 | • | Select CD source on receiver or preamp. | ||
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| Sound skips or stutters during play | • | Disc may be damaged | • | Try another disc. | 
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 | • | Surface vibrations | • | Isolate the unit from vibration by placing it on a firm surface or move | 
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 | it further away from the speakers. | 
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| Sound is continually distorted | • | Incorrect input | • | Make certain that the analog Audio Outputs  of the CD player | 
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 | are connected to a  | 
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 | phono input. | 
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| “Error” lights up continuously in the display | • | Various | • | Turn the unit off and on again. If the problem persists, turn the AC | 
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 | power to the CD player off and on. | 
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