Duncan 84-50 Tube Руководство пользователя - Страница 11
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The following chart should help isolate some common problems you may encounter with
your amplifier. Some are obvious problems you can remedy yourself, but remember,
THERE ARE NO USER SERVICABLE PARTS INSIDE THE AMP. If you cannot identify
the cause of the problem using the chart, or if it indicates your amplifier to be defective
and in need of repair, return the unit to an authorized Seymour Duncan Service Center,
or call (805) 964-9610 for a Return Authorization number. No units will be accepted by
Seymour Duncan without an RA
Symptom
Amplifier does not come on
when power switch is "on"
No sound coming from
speakers; no audible hum
from amplifier, but LED's are
on.
Distorted sound from one or
both channels at low
volumes
No Reverb
number.
Cause
1. Power not connected
2. Blown amp fuse
3. No source voltage
4. Defective on/off power
switch
1. Master volume and/or
overdrive control set too low
2. Speaker output jack not
connected
3. Defective speaker or cable 3. Verify if speakers operate
4. Volume controls on
instrument down
1. Overdrive control set too
high
2. Worn tubes
1. Reverb control set too low 1. Increase control level
2. Reverb output wires not
connected to send/return
inputs or connected
backwards
3. Defective spring
Remedy
1. Ensure power cord is
plugged in.
2. Check amp fuse; replace
with appropriate value fuse-
1A/250 V for 220V & 240V
operation
2A/250V for 100V & 120V
operation
3. Verify power source with
something you know works.
4. Return unit to authorized
service center.
1. Increase control settings
2. Connect speaker to 4 ohm
or 8 ohm output.
properly by using another
amp.
4. Increase instrument
settings
1. Reduce control level.
2. See maintenance and
tube chart section
2. Ensure reverb output
wires properly connected.
3. Refer to authorized
service center