Trouble Shooting - Adcom GTP-860 Owner's Manual

SYMPTOM
No sound
No sound on one channel
No sound on surround channels
No sound on center channel
"Dolby Digital" OR "DTS" auto-
detection function does not work
Weak bass/Diffuse stereo image
Remote control handset not working
No sound with tuner
Noise, hiss on AM and FM
Distortion on FM
Whistles or buzzes on FM & AM
Whistles or buzzes on AM
No RDS name (PS)
POSSIBLE REASON
• Power AC lead unplugged or
power not switched on
• Tape Monitor selected
• Mute on
• Power Amplifier not on
• Speaker not properly connected
or damaged.
• Input lead disconnected or
damaged
• In Setup "OFF" for surround
speaker selected
• No surround mode selected
• Mono sound source
• Speakers not properly
connected
• Surround volume level too low
• In Setup "OFF" for center
speaker selected
• Speaker not connected properly
• Center volume level set too low
• Source not connected using
digital input
• Bit Stream is PCM
• Speakers wired out of phase
• Batteries dead, or incorrectly
inserted
• IR transmitter or receiver
windows obstructed
• IR receiver in direct sun or very
bright ambient light
• Antenna leads incorrectly
connected
• Station not selected or weak
signal with FM Mute on.
• Weak signal
• Multi-path signals or interfe-
ence from another station
• Interference from other
electrical sources - computers,
games consoles
• Interference from fluorescent
lighting or electrical motor
• Station signal too weak.
• Station not transmitting RDS data
POSSIBLE SOLUTION
• Check if AC lead is plugged in
and power switched on
• De-select Tape Monitor mode
• Switch off Mute
• Turn on the Power Amplifier
• Check connections and speakers
• Check leads and connections
• Select appropriate Surround
mode (large or small)
• Select a Surround Mode
• Test system with Stereo or
Dolby Surround material
• Check speakers and connections
• Increase surround volume level
• Select appropriate Center
mode (large or small)
• Check speaker and connection
• Increase center volume level
• Connect digital output of source
to GTP-860
• Check source material
• 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 or switch off FM Mute
• Check station tuning. Adjust or
replace antenna.
• 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 station tuning. Adjust or
replace antenna
• No remedy
ADCOM GTP-860 OWNER'S MANUAL | 33