Duncan 84-50 Tube, Руководство пользователя

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TROUBLESHOOTING
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
number.
Symptom Cause Remedy
Amplifier does not come on
when power switch is "on" 1. Power not connected 1. Ensure power cord is
plugged in.
2. Blown amp fuse 2. Check amp fuse; replace
with appropriate value fuse-
1A/250 V for 220V & 240V
operation
2A/250V for 100V & 120V
operation
3. No source voltage 3. Verify power source with
something you know works.
4. Defective on/off power
switch 4. Return unit to authorized
service center.
No sound coming from
speakers; no audible hum
from amplifier, but LED's are
on. 1. Master volume and/or
overdrive control set too low 1. Increase control settings
2. Speaker output jack not
connected 2. Connect speaker to 4 ohm
or 8 ohm output.
3. Defective speaker or cable 3. Verify if speakers operate
properly by using another
amp.
4. Volume controls on
instrument down 4. Increase instrument
settings
Distorted sound from one or
both channels at low
volumes 1. Overdrive control set too
high 1. Reduce control level.
2. Worn tubes 2. See maintenance and
tube chart section
No Reverb 1. Reverb control set too low 1. Increase control level
2. Reverb output wires not
connected to send/return
inputs or connected
backwards 2. Ensure reverb output
wires properly connected.
3. Defective spring 3. Refer to authorized
service center