Duncan Convertible 2000 Gebruikershandleiding - Pagina 17
Blader online of download pdf Gebruikershandleiding voor {categorie_naam} Duncan Convertible 2000. Duncan Convertible 2000 19 pagina's.
Pagina afdrukkenAmp blows a fuse after several
minutes of operation.
Amp blows a fuse immediately
after it is switched "On"
Distorted sound coming from
only one channel.
Distorted sound coming from
both channels.
Distorted sound coming from
both channels.
No reverb coming from
amplifier.
Channel Selector Footswitch
does not change channels.
1. Wires from speaker to amp
shorted.
2. M-34 or 5U4GB power rube
defective.
3. Problem persists.
1. Defective 5U4GB rectifier
tube
2. Internal short circuit.
1. Overdrive control level set
too high.
2. Defective preamp module.
1. Overdrive control levels set
too high.
2. Defective first stage preamp
module.
3. Speaker output wires to
amplifier shorted.
4. Pickup, instrument or
connecting cable may be
defective.
5. Defective speaker(s).
6. Defective Variable Power
tube (12AU7 near power
transformer.)
1. Reverb control level(s) set
too low.
2. Reverb output wires not
connected to Send/Return
inputs.
3. Defective internal spring.
4. Defective reverb Send or
Return circuits.
5. Springs are stuck.
1. Channel Selector on amp.
set to Channel 2 position.
2. Defective footswitch.
3. Defective internal channel
switching in amp.
1. Replace speaker cord.
2. Replace tube.
3. Return amp to dealer or
factory for repair.
1. Replace tube.
2. Return amp to dealer or
factory for repair.
1. Reduce control level.
2. Replace module with one
known to operate properly.
1. Reduce control levels.
2. Replace module with one
known to operate properly.
3. Replace speaker cord.
4. Substitute cable and instru-
ment with one you know
operates properly.
5. Verify speakers operate
properly by connecting
speaker plug to speaker
output jack on another amp. If
speaker is defective return unit
to dealer or factory for repair.
6. Remove 12-AU7 Variable
Power tube to check and
replace if necessary.
1. Increase control level(s).
2. Ensure output wires
properly connected to rear
panel jacks. Cable with red dot
should be connected to Return
Jack.
3. Replace reverb unit.
4. Return to dealer or factory.
5. Tap the reverb tank with
your hand.
1. Use the panel mounted
Channel Selector to set the
amp in Channel 1 (Indicated
by the red L.E.D.)
2. Substitute footswitch with
one known to operate
properly. If found to be
defective, return footswitch to
factory or dealer for repair.
3. Return amp to dealer or
factory for repair.