GE 4PE21A1 Instructions Manual page 4

GENERAL SERVICE INFORMATION
SAFETY NOTICE
WARNING
VOLTAGES USED FOR THE
OP-
ERATION OF THIS EQUIPMENT
ARE
DANGEROUS
TO
HUMAN
LIFE.
This instruction manual is written for
the
general
guidance of
maintenance
and
ser-
vice personnel
who
are familiar
with and
aware
of
the dangers
of
handling
electric
and
electronic circuits.
It
does not
purport
to include a
complete statement
of the
safety
precautions
which should be
observed
in
servicing this or other electronic
equip-
ment.
The
servicing
of
this equipment
by
inadequately
trained or inexperienced per-
sonnel involves
risks
to
such personnel and
to the
equipment for which the manufacturer
can not
accept responsibility. Personnel
ser-
vicing this equipment should
familiarize
themselves
with
first -aid treatment
for elec-
trical
burns
and
electrical
shock.
PRODUCTION CHANGES
From time
to
time
it
becomes
necessary
to make changes
in
the equipment described
in
this
book. Such
changes
are
made to
im-
prove performance or meet
component
short-
ages and
are
identified
by a
revision
letter
following the model number stamped
on
the
nameplate.
The
changes
in
the equipment as
they affect the instruction
book
are listed
on a
Production Change Sheet
included
in
the book.
If no
Production Change Sheet is
included,
no
changes
have been
made.
The
revision
letter
appearing
on
the
title
page
indicates the equipment
revision to which
the book
corresponds.
This information is provided as
a
servic-
ing
aid; it should
not be
used to modify
earlier
equipments
to
incorporate
later re-
visions except under specific instructions.
Please mention the revision letter
in
any
correspondence.
REPLACEMENT
PARTS
The
parts list
contained
in
this
book
in-
cludes all
principal replacement parts.
The
symbol
numbers are
the
same as those ap-
pearing
on
elementary
and
other drawings.
Whenever
possible, replacement parts
should
be
obtained from
a
local
electronics
supply
dealer.
If
it is
necessary
to
order
a
part
(other than
a
tube)
from the General Electric
Company,
please include the symbol number,
description,
and
drawing number
of
the
part
and model
number
of the
unit.
Orders
may
be
sent
to the
nearest Electronics
Division
office
appearing
on
the
list
at the end
of
this
book
or
the General
Electric
Company,
Technical Products -Communication Products
Department, Electronics Park,Syracuse,
N.Y.
REPLACEMENT
TUBES
In
all
cases replacement
tubes must
be
ordered
from
a
local
tube
distributor.
These instructions
do
not
purport
to
cover all details or variations
in
equipment nor
to
provide for every
possible contingency
to be
met
in
connection with
installation, operation, or maintenance.
Should
further
information
be
desired or
should
particular problems
arise
which
are
not
covered sufficiently for
the
pur-
chaser's purposes,
the
matter
should
be
referred
to the General
Electric
Company.
EBI-17B 5/61 (10M)
DEFENSE
ELECTRONICS
DIVISION
GENERAL ELECTRIC
ELECTRONICS
PARK, SYRACUSE, N. Y.
US