Inside The Bugera; Instructions For Qualified Service Personnel Only - Bugera 6262-212 User Manual

Inside the BUGERA

DANGER!
*
High voltage! Risk of death!
High voltages of up to 500 V DC may be
present inside the casing for long periods
after being disconnected from the mains.
To avoid lethal electric shock, do not open
the casing. There are no user-serviceable
components inside. Refer all maintenance
to qualified service personnel. Remove the
mains cable when the unit is not in use.
The parts inside the amplifier operate at
*
high voltages and high temperatures. To
avoid damage and injury that results from
fire or electric shock, do not drop or spill
anything into the unit's casing.
Inside the BUGERA 6260
INSTRUCTIONS FOR QUALIFIED
SERVICE PERSONNEL ONLY
Remove the backside of the amplifier's casing to get to
the valves and the control elements.
32 These are the sockets for the
amp valves.
33 These are the sockets for the
amp valves. Please take care that the BIAS SE-
LECT switch (34) is set correctly. The BUGERA amp
is supplied with 6L6GC power amp valves when it
leaves the factory.
34 The
optimally adapt to the used valves (6L6 or EL34).
*
35 The
meter in order to measure the power amp valves
(bias adjustment). Make sure that the voltmeter is
set to direct current (DC).
36 The
as-adjustment.
$
Replacing the power amp valves also requires
bias adjustment. You should always use sets
of four matched valves. The valves of the
BUGERA Series are ideal for this purpose.
!
Control elements
6L6 and EL34 power
BIAS SELECT switch allows the amplifier to
BIAS TEST connector lets you connect a volt-
BIAS ADJUST control is used to make the bi-
CAUTION: WE HIGHLY RECOMMEND THAT
BIAS ADJUSTMENTS BE CARRIED OUT BY
QUALIFIED PERSONNEL!
12AX7A/B/C pre-
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