Tektronix 7B10 Instruction Manual page 7

7B10
Instruction
SERVICING SAFETY
SUMMARY
FOR QUALIFIED SERVICE
PERSONNEL ONLY
Refer also to
the
preceeding Operators Safety
Summary
The
following are safety precautions
which
appear
in
the servicing information sections
of this
manual.
This Servicing
Safety
Summary
is
in
addition to the
Operators Safety
Summary
given previously.
WARNING
DO NOT
SERVICE
ALONE
Do
not attempt
internal service or
adjustment unless another
person, capable of rendering
first
aid
and
resuscitation,
is
present.
DISCONNECT INSTRUMENT POWER
To avoid
electric-shock,
disconnect the instrument from
the
power
source before removing protective panels,
soldering, or replacing
components.
SILICONE
GREASE HANDLING
Handle
silicone
grease
with
care.
Avoid
getting the silicone grease
in
your
eyes.
Wash
hands
thoroughly
after
use.
AVOID EXCESSIVE MOISTURE
Circuit
boards
and components must
be dry before applying
power
to
prevent
damage
from
electrical arcing.
EXERCISE
CARE
WHEN
CHECKING DIODES
When
checking
diodes,
do not
use an
ohm-meter
scale that
has a high
internal current, since
high currents
may damage
the diodes
under
test.
EXERCISE
CARE
WHEN
SOLDERING
ON
MULTI-LAYER
BOARDS
AH
but the readout
circuit
board
in
the
instrument are
multi-layer type
boards with a conductive path
laminated
between
the top
and
bottom board
layers.
AH
soldering
on these boards should be
done
with
extreme
care
to
prevent breaking
the connections
to this
center conductor.
Only experienced
maintenance
personnel should attempt repair of these
boards.
USE PROPER CLEANING
AGENTS
A
void the
use
of
chemical cleaning agents
which might damage
the plastics
used
in this
instrument.
Use
a
non-residue type of cleaner, preferably isopropyl
alcohol, totally
denatured
ethyl alcohol, or
Freon
TF.
Before
using
any
other type of cleaner, consult
your
Tektronix Service Center or representative.
DO NOT
USE
PIN
SOCKETS FOR CONNECTION
POINTS
The spring tension
of the
pin sockets ensures a
good
connection
between
the
circuit
board
and
the
pin.
This
spring tension
can be destroyed by
using the pin sockets as a connecting point
for
spring-loaded
probe
tips,
alligator
dips,
etc.
@
V