Crown POWER-TECH 3 Specifications download pdf (Page 15)

Power-Tech .1 Series Power Amplifiers

page 15Operation Manual

CONDITION: No power to the

amplifier.

POSSIBLE REASON:

• The amplifier's Power switch is off.

• The amplifier is not plugged into the power

receptacle.

• The amplifier's low-voltage power supply fuse

has blown. Return amp to Crown or an autho-

rized Crown Service Center for servicing.

CONDITION: Distorted sound.

POSSIBLE REASON:

• Input signal level is too high. Turn down your

amplifier level controls. NOTE: Your amplifier

should never be operated at a level which

causes the IOC LEDs to flash yellow con-

stantly.

CONDITION: No sound.

POSSIBLE REASON:

• The amplifier has just been turned on and is

still in the 4-second turn-on delay.

• The amplifier is in drive protection mode. This

can occur with improper source signals like

infrasonic square waves or input overloads

that excessively clip the input signal.

• The breaker has tripped. First disconnect your

speakers from the affected channel(s) one by

one to determine if one of the loads is shorted.

Reset the breaker and apply an input signal. If

the signal presence indicator flashes, then try a

different speaker or cable to determine where

the short is occurring. If no short can be found,

turn off the amp and allow the amp to cool. If

indicators do not return to normal after restart-

ing your amp, return amp to Crown or an

authorized Crown Service Center for servicing.

• Input signal level is very low.

• Level controls are turned down.

• Input cables are not connected.

Key Off

Lit

Green Lit

Yellow Lit

6 Troubleshooting

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