23
Repair
Guidelines:
1)
There
is
still
large
signal
output
when
in
protection
circuit,
increase
the
volume
and
the
signal
source
and
then
detect
the
output
waveform
by
opening
oscilloscope
or
multimeter,
adjust
the
output
waveform
to
minimum
through
VR1/VR2
when
the
amplifier
start
self
‐
protection.
Note:
Debugging
must
be
done
before
the
protection
LED
is
off,
you
can
repeat
the
debugging
in
interval.
14
Special
Notes
14.1
No
prior
notice
if
any
change
on
these
models
happened;
14.2
Should
any
problem
can
not
be
solved,
please
contact
us
or
send
back
for
repairing;
14.3
Please
do
not
replace
the
key
devices
that
will
influence
the
performance
of
equipment.
Summary of Contents for HP-X series
Page 1: ...1 Service Manual HPX Series Applicable Models HPX900 HPX1200 HPX2400 HPX2800...
Page 10: ...10 6 HPX900 Malfunction Analysis on Amplified Part 6 1 Circuit Diagram of Amplifier...
Page 16: ...16 10 HPX1200 Malfunction Analysis on Amplified Part 10 1 Circuit Diagram of Amplifier...
Page 18: ...18 11 HPX2400 2800 Malfunction Analysis on SMPS 11 1 Circuit Diagram of SMPS...
Page 20: ...20 12 HPX2400 2800 Malfunction Analysis on Amplified Part 12 1 Circuit Diagram of Amplifier...
