Troubleshooting
10
• Power Switch off
• Breaker (Power Switch) tripped
- Turn off, then turn back on
• Power Sequencing Switch set wrong
- Check Sequential Turn-On section for proper configuration
PR
OBLEM CONDITION CAUSE
Rear Power Status LED
is amber.
SEQUENCING
NOT
FUNCTIONING
CORRECTLY
Master amplifier ON (Rear
Power Status is green),
slave amplifiers in chain not
powering ON (Rear Power
Status is off).
• No AC power to amplifier
UNIT APPEARS
DEAD
(NO FRONT
STATUS LED)
Rear Power Status LED is off.
• Amplifier not plugged in
•
AC outlet dead
Master amplifier ON (Rear
Power Status is green),
slave amplifiers in chain not
powering ON (Rear Power
Status is amber).
• Power Switch is off on slave amp
• Breaker (Power Switch) tripped
-
Turn off, then turn back on
• Rear Power Sequencing Switch is not ON
• Error in Sequencing wiring between amplifiers
• Poor/broken speaker wiring
• Defective speakers
• Poor electrical connections at input
• Input cable r
outed near
AC cables, power transformer, or
other EMI
radiating de
vices
• Electrically noisy devices operating on the same AC circuit
• Poor equipment grounding
-
Ensur
e that all
A
C safety grounds are connected
- Make sure that all components in audio chain are tied to the
same ground
NO SOUND
NOISE/HUM
DISTORTED
SOUND
INTERMITTENT
OPERATION
Status LED is green.
Signal LED is off.
• Level Controls turned down
• No signal from source
• CH B Input Select not set or wired properly
Status LED is green.
Signal LED is green.
Limit LED is off.
Status LED is green.
Signal LED is green.
Limit LED is off.
• Input signal level too high
• Poor speaker connections
• Lo-Cut Switch set to Flat
• Input Sensitivity Switch not set correctly
Status LED is green.
Signal LED is green.
Limit LED
is amber (on or
flashing).
• Speaker transformers saturating at low frequencies, Lo-Cut
filter off,
need additional Hi-Pass filtering
• Belo
w minimum load rating on output
• Exceeding maximum power output rating
Status LED is red/green cycling.
• DC level at signal input
• Load impedance too lo
w
•
Amplifier speak
er output is short-circuited
• Amplifier too hot (check for proper ventilation clearances)
Status LED is green.
Signal LED is green.
