Troubleshooting - Adcom GFR-700 User Manual

Troubleshooting

The table below shows possible causes and solutions to common GFR-700 issues. If you do not see the answers
you need here, please contact your Adcom dealer or customer service department; see page 59.
Symptom Possible Reason
No sound • Power cable unplugged
• Power switch turned off
• Tape Monitor selected
• Mute on
• Incorrect Input Config setting
No sound on one • Speaker not properly connected or damaged
channel • Input cable disconnected or damaged
• Speaker set to "None" in menu system
No sound on surround • No surround mode selected
channels • Mono sound source
• Speakers not properly connected
• Surround volume level too low
No sound on center • Center speaker set to "None" in menu system
channel • Speaker not connected properly
• Center volume level set too low
"Dolby Digital" OR • Source not connected using digital input
"DTS" auto-detec- • Incoming signal is set to PCM instead of Bitstream
tion function does not
work
Weak bass/diffuse • Speakers wired out of phase
stereo image
Remote control not • Batteries dead, or incorrectly inserted
working • IR transmitter or receiver windows obstructed
• IR receiver in direct sun or bright ambient light
No sound with tuner • Antenna leads incorrectly connected
• Station not selected or weak signal
• Mute on
Noise, hiss on AM and • Weak signal
FM
Distortion on FM • Multi-path signals or interference from another
Whistles or buzzes on • Interference from other electrical sources, e.g.,
FM & AM
Whistles or buzzes • Interference from fluorescent lighting or electri-
on AM
No picture • Incorrect TV input selected
Cannot access setup • Not in Main mode
menu • HDMI or Progressive Scan video output selected
Cannot power off unit • Setup menu is active
60 GFR-700 Owner's Manual
station
computers or games consoles
cal motor
Possible Solution
• Plug in power cable
• Turn on power switch
• Press Tape to de-select Tape Monitor
• Switch off Mute
• Make sure audio input is set correctly in Input
Config menu
• Check connections and speakers
• Check cables and connections
• In Speaker Config menu, set speaker to "Small" or
"Large"
• Select a surround mode
• Test system with stereo or Dolby Surround mate-
rial
• Check speakers and connections
• Increase surround volume level
• In Speaker Config menu, set Center speaker to
"Small" or "Large"
• Check speaker and connection
• Increase Center volume level
• Connect digital output of source to GFR-700
• Check the Digital Out setting on your source
component
• Check connections to all speakers in the system
• Check or replace batteries
• Remove obstruction
• Place unit away from direct sun, reduce amount
of ambient light
• Check antenna connections to preamplifier
• Re-tune
• Switch off Mute
• Check station tuning
• Adjust or replace antenna
• Press St/Mono button to reduce hiss
• Check station tuning
• Adjust or replace antenna
• Check station tuning
• Switch off or move the source of the electrical
noise
• Check station tuning
• Adjust or replace AM antenna
• Check the input setting on your TV
• If the GFR-700 is connected to your TV in more
than one way (e.g., S-video and Component
video), select the TV input that corresponds with
your selected source component
• Press Main, then press Setup
• Select Video, S-video, or Component output to
view Setup menus
• Press Setup to exit the Setup menu, then power
off unit