Dynamic Precision DPA 6.4 사용자 설명서 - 페이지 11

{카테고리_이름} Dynamic Precision DPA 6.4에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Dynamic Precision DPA 6.4 13 페이지.

SYMPTOM

Apparatus is put in STANDBY.

Humming sound heard from the

loudspeakers.

No sound, but the indicators are

lit.

DPA 6.4

POSSIBLE CAUSE

1: High frequency noise

2: Problem with the signal cable.

3: DC on the inputs.

4: Overheating.

5: Strong signal clipping.

Degraded/defective shield on the

signal cables.

Fuses (T5A) may be defective.

TROUBLESHOOTING

POSSIBLE SOLUTION

1: Insert a mains filter between

the power amplifier and the

main outlet.

2: Check for proper

grounding/shield of the cables,

or replace the cables.

3: Check if DC is present on

the signal source output.

4a: Check if the loudspeaker

cables are partially short-

circuited, or replace the

cables.

4b: Ensure that the amplifier

has at least 15 cm of free

space on top.

5: Input level is too high.

Check or replace the cables.

Replace the fuses and check

the apparatus for proper

operation. Check if the

loudspeaker cables are wired

correctly and/or if a shortening-

circuit has occurred.

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