Crown DCi 4|300 - Troubleshooting Common Issues; Power, Thermal, and Fault Indicator Problems

DCi Series Power Amplifiers
Operation Manual
page 16
Troubleshooting
CONDITION: Power indicator is
ashing.
POSSIBLE REASON:
• The AC line voltage has dropped below
10% or has risen above 10% of the
nomi nal line voltage of the power supply.
• Amp is in sleep mode as set on the
aux port.
CONDITION: Thermal indicator
is on.
POSSIBLE REASON:
• The amplier is becoming too hot for safe
operation. Allow amplier to cool.
Check for loads less than 2 ohms,
and for excessive input levels. Check
for proper ventilation and proper
mode-switch set ting.
CONDITION: Power indicator
is off. Mains indicator is on.
POSSIBLE REASON
• The amplier’s Power switch is off.
CONDITION: Power indicator
is off. Mains indicator is off.
POSSIBLE REASON
• The power supply fuse has tripped.
• The amplier has lost AC Power.
• The amplier is not plugged in to the
power receptacle.
CONDITION: Fault indicator is
ashing.
POSSIBLE REASON:
• There are a number of conditions that
result in the Fault indicator ashing:
temperature above 98C, DC/LF protection
is engaged, HF detect, output short
circuit detected. These conditions should
all be checked and attempted to be
resolved before the amp is shipped back
for service.
“Off/Flashing/On” above means that
the LED can be off, or flashing, or on.