Contacta HLD7 사용자 설명서 - 페이지 14

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Symptom

I've adjusted the HF comp

and see no change.

I start the driver and

immediately the status light

turns on.

I start the driver and test

sequence starts, but after

it's done, the status light

turns on.

I've connected the loop and

the driver doesn't work, the

status light comes on.

My driver has been working

well for a couple weeks and

now the status light is on.

The power light doesn't

come on.

I can't get my driver out of

adjustment mode.

Interference (buzzing/

whistling/hissing) is heard

through induction loop.

My driver is very hot.

Troubleshooting

Possible Fault

1) The driver is working close

to maximum output so there is

not enough headroom for the

HF comp to make a difference.

1) Loop shorted or open, too

small or too large.

2) Internal self-test failure.

1) Mains power absent.

2) Internal failure.

1) Button presses not

coinciding.

2) Internal failure.

1) Bad input signals.

2) Internal failure.

1) Large amount of mains hum

present on input.

2) Internal failure.

Action

1) Check loop characteristics.

If response OK at 1 amp, the

headroom is inadequate.

1) Check loop and

connections, try known good

loop.

2) Check loop DC resistance

with an ohm meter:

0.33 ohms minimum.

1) Check mains power.

2) Seek assistance.

1) Press both buttons together

to exit mode.

2) As a last resort, cycle

power off/on. New settings

should have been saved.

1) Power off driver and

confirm that interference isn't

from external origin.

2) Disconnect input signals.

If sound disappears, check

inputs.

1) Check input signal source.

2) Incorrect driver being used.