Information For Assistence In Fault-Finding; Mains Transformer Data; Voltages And Waveforms In The Instrument; Remark - Philips pm3232 Instruction Manual

97
3.4.
Information
for assistance
in fault-finding
3.4.1.
MAINS
TRANSFORMER DATA
The
available
unloaded
voltage tappings
and
the
number
of turns per
winding
are
listed in
the circuit
diagram
in
the
form
of
a table.
3.4.2.
VOLTAGES AND WAVEFORMS
IN
THE INSTRUMENT
The
d.c.
voltage
levels at
the electrodes of the
transistors
and
the voltage
waveforms
in
the time-base generator
are
shown
at
the
relevant
points
on
the circuit
diagram.
The waveforms
have been measured under
the following conditions:
—
Input
signal
on socket
BUS:
2
kHz
sine-wave voltage
for
6
cm
deflection
— LEVEL
potentiometer
R3
in
mid-position
—
TIME/cm
switch
SK2
to
.2
ms
and
X
MAGN
switch
SKI
to
x1
—
Y/\,
+ and
AUTO
push-buttons
SK4,
SK8
and
SKIO
depressed
- AMPL
switch
SK17
to
1
V/cm
The
voltage values are typical
and
may
slightly differ
per instrument.
3.4.3.
REMARK
In
case of
a
defect
it is
always possible to apply to the
world wide PHILIPS
Service Organization.
When
the instrument
is
to be sent to
a
PHILIPS
Service
Workshop
for repair,
the following points should
be
observed:
—
Attach
a label
with your
name
and
address to the
instrument
—
Give
a
complete
description of the
faults
found
—
Use the
original
packing,
or,
if
this
is
no
longer
available,
carefully pack the instrument
in
a
wooden
crate
or
box
—
Send the Instrument
to the address
obtained
after
consultation with the
local
PHILIPS
Organization.