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Krell Industries Evolution One User Manual

Page 31

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Diagnostic Codes

Possible Condition

Course of Action

1 flash, pause, 2 flashes,

Amplifier is over

Allow the amplifier

repeat; then the amplifier

temperature

to cool. When the LEDs

reverts to stand-by mode

stop flashing, the ampli-

fier has cooled down.

flash, pause, 5 flashes,

Short circuit

Check all connections

repeat; then the amplifier

on output

at the amplifier and loud-

reverts to stand-by mode

speaker binding posts.

Cycle the power breaker

switch (21) on the power

supply and attempt to

power on the amplifier.

Call the factory if the

problem persists.

1 flash, pause, 7 flashes,

Line frequency error:

Contact your local

repeat; then the amplifier

The amplifier is set for

authorized Krell

reverts to stand-by mode

60 Hz, but is attempt-

dealer or distributor.

ing to operate via a

50Hz system.

Output mutes while music

DC detected at input

Check source and

is playing, and then sound

during playback.

preamplifier for

resumes.

Input capacitors are

excessive DC output.

automatically engaged.

Once DC has been elimi-

nated, cycle the power

breaker switch (21) to

disengage the input

capacitors.

The power breaker switch

Possible component

Contact your local

(21) trips; then the amplifier

failure.

authorized Krell

powers off. The amplifier

dealer or distributor, or

repeats this action when

the Krell Service

powered on.

Department.

Evolution One amplifiers report operational issues by flashing the power/stand-by

LEDs (4) in red, in a specific sequence, or by tripping the rear panel breaker (21),

as follows:

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