Crown Audio 2650 user manual Status Indication, Fault and both Temp lights flashing

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T r o u b l e s h o o t i n g . . .

Status Indication

There is a microprocessor inside each PULSE amplifier responsible for monitoring all critical systems. The status of which are displayed on the front panel lights.

Their indication is as follows:

Fault and both Temp lights flashing

The amplifier has just been plugged in and the microprocessor is carrying out a test sequence. This is normal and will stop after about 7 seconds.

Power light on, Operate light off, Fault light on & flashing

The microprocessor has been unable to start the main power supply. If the condition persists for more than 1 hour without an input signal, check the rear panel fuse. If the fuse is blown and a replacement also fails (or the fault persists), return the amplifier to an authorized service center. Information is in the Service & Warranty sections.

Power light on, Operate light off, Fault light on (not flashing)

(The Operate and Fault light may be flashing very slowly accompanied by internal clicking). A fault has been detected with one or more of the amplifier channels and the processor has shut down the power supply to protect both the amplifier and your speakers. Depending on the fault it may try to resume operation again indefinitely, or give up after a number of attempts. If after disconnecting all input and output leads and switching the amplifier off and on again (to reset it), the condition persists, return the amplifier to an authorized service center. Information is given in the Service & Warranty sections.

Power light on, Operate light on, Fault light on, Temp light on

One or both of the heatsinks have exceeded their maximum temperature. When in this condition, the channel associated with each Temp light will be muted until the temperature has fallen to a safe level. Normal operation will then automatically resume. The most likely causes of an over-temperature condition are blocked rear air intake, obstructed front air exhausts or, if fitted, clogged fan filters.

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Contents Professional Power Amplifier Typical applications N t e n t sF e t y I n f o r m a t i o n Important Safety InstructionsIntroduction T r o d u c t i o n & U n p a c k i n gUnpacking C h a n i c a l Installation Live/Hot P o w e r C o n n e c t i o nD i o C o n n e c t i o n s InputsStereo operation OutputsBridge switch 0C o n t r o l o p e r a t i o n Power SwitchLevel controls 1 AC Present FaultSignal D i c a t o r sBridge D i c a t o r s ClipP i c a l a p p l i c a t i o n s Two amplifiers used in bridge modeTwo channel stereo operation Calculating Impedance O s s a r y Frequency Response DBu or dBvDistortion FrequencyTransient Removable terminal blockSpeakon Ohms 400W rms 650W rms 850W rms Specification sOhms 800W rms 1300W rms Problem Distorted sound ChecklistTroubleshooting Problem No outputStatus Indication Fault and both Temp lights flashingR v i c e & W a r r a n t y Worldwide ServiceService Shipping Instructions Crown Audio Customer ServiceThree Year Full Warranty Division of Harman International Industries