Resolving Problems - Adcom GTP-602 Owner's Manual

SYMPTOM
No sound
No sound on one channel
No sound on surround channels
(for digital preamplifiers)
No sound on center channel
(for digital preamplifiers)
"Dolby Digital" OR "DTS" auto-
detection in digital preamp.
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
• 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-602
• 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
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