FL 8370 (serv.man5) - Harman Kardon Audio User Guide / Operation Manual. Page 15

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14 TROUBLESHOOTING GUIDE
Troubleshooting Guide
SYMPTOM
POSSIBLE CAUSE
SOLUTION
No lights on front panel
• No AC power
• Make certain that the AC power cord is plugged into a live outlet
Remote does not appear to operate 
• Main Power Switch turned off
• Turn on Main Power Switch 
• Weak batteries
• Install fresh batteries, observing polarity indications
• Blocked sensor
• 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 upside down
• Turn CD over so that label side faces up
• Moisture inside unit
• Leave the unit turned ON for 30 minutes to allow
moisture to evaporate
Play indicator lights but no sound is heard
• Poor connections
• Make certain connections are secure and made to 
• Wrong source selected
the correct (e.g., CD) input
• Select CD source on receiver or preamp
Sound skips or stutters during play
• Disc may be damaged
• Try another disc 
• Surface vibrations
• Isolate the unit from vibration by placing it on a firm surface
or move it further away from speakers
Sound is continually distorted
• Incorrect input
• Make certain that the FL 8370 is connected to a line-level
audio input, NOT a digital audio or phono input
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