Harman Kardon HK 3700, Service Manual

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HK 3700/3770
troubleshooting
14
Problems Solutions
unit does not function when main power button is turned On • Make sure ac power cord is plugged into a live outlet
• check to see whether outlet is switch-controlled
no sound from the receiver • Make certain that all input and speaker connections are secure.
• press Mute button
• turn up Volume control
• press correct Source Selector
• press Speaker 1 or Speaker 2 button
• unplug headphones
• Replace jumper pins or, if external amplifier is in use, make sure it is turned
On
no sound from any speaker • check speaker-wire connections for shorts at receiver and speaker ends
• contact your local Harman Kardon service center
unit does not respond to remote commands • change remote batteries
• Make certain front-panel sensor is visible to remote or connect an optional
remote sensor
Intermittent buzzing in tuner • Move unit or antenna away from computers, fluorescent lights, motors or
other electrical appliances
no video image • connect the source’s composite video output to the correct video input on
the HK 3700/3770
• press the correct Source Selector on the HK 3700/3770
• connect the HK 3700/3770’s Video Monitor Output to a composite video
input on your television or video display
• consult the manual for your television for instructions on selecting the
correct video input
• It is not possible to view video while listening to the phono, tape/cdR or cd
sources or to the tuner
audio sources sound distorted • Only plug a device into the phono Inputs if it is a turntable with a moving-
magnet cartridge, or if it is a turntable with a moving-coil cartridge with a
phono preamp
• do not use a turntable with any inputs other than the phono Inputs, unless
it has a moving-magnet-type cartridge and includes a phono preamp
Troubleshooting
If your HK 3700/3770 receiver does not perform the way you think it should, check whether the problem is covered in this section before contacting your dealer or a
Harman/Kardon representative.
Harman Kardon HK 3770 Service Manual
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