Rivera Quiana Studio Owner's Manual page 20

3. After 25 minutes, turn it on, and if it shuts down again, refer the amp to qualified
service personnel.
Note: On SEMKO 230/250-volt models, there are two additional T 1.6A (250-volt Slo-
Blo type, 5mm x 20mm) fuses and one T 10A (250-volt Slo-Blo type, 5mm x 20mm)
fuse located internally. These protect the amp's output tube filaments and should only
be replaced by qualified service personnel.
There's unwanted distortion
1. Check the speaker(s).
2. Check the cables.
3. Check the signal level at other devices in the signal path.
4. One or more tubes may be bad (refer to the tube information in this manual, or take
your amp to qualified service personnel).
Tube Care & Replacement
Like a sports car, there's a certain amount of wear and tear to be expected in a high-
performance tube amp. Over time, especially with hard use, tubes may need
replacement. That's why it's a good idea to make note of when you purchased your amp
and whenever you replace tubes. It's no accident that your amp has two common types
of tubes: They're great-sounding and reliable, and it's easy to find replacements. Here's
a tube chart to show you which tubes go where.
Quiana 50/Fandango 55
V6 V7
V1 V2 V3 V4 V5
Quiana 100/Fandango 100
V6 V7 V8 V9
V1 V2 V3 V4 V5
Quiana and Fandango 1.0 p 20