Icom ic-775 Service Manual page 2

INTRODUCTION
DANGER
This service
manual
describes the
latest
service information for
the
IC-775/DSP
HF ALL
BAND TRANSCEIVER
at
the time
of
publication.
5 versions
of
the
IC-775DSP and
5 versions of
the IC-775
have
been
designed. This service
manual
covers
each
version.
MODEL
VERSION
NO.
VERSION
SYMBOL
IC-775DSP
#02
Other
OTH
#03 Spain
ESP
#04 France
FRA
#05
Germany
FRG
#07 Europe
EUR
IC-775
#12 Other
OTH-1
#13 Spain
ESP-1
#14 France FRA-1
#15
Germany FRG-1
#17 Europe
EUR-1
To upgrade
quality,
any
electrical
or
mechanical
parts
and
internal circuits
are subject to
change
without notice or
obligation.
Use
ONLY
the specified
AC
voltage described
on
the
AC
power
socket.
Other
voltage
may
cause the transceiver
damage
or
personal
injury.
DO NOT
touch the
REG
unit after
the transceiver
is
connected
to
an
AC
outlet.
An
insulated tool
must be used
at
all
time.
DO NOT
expose
the transceiver
to rain,
snow
or
any
liquids.
DO NOT
apply
an
RF
signal of
more
than
20
dBm
(100
mW)
to
the
antenna
connector.
This could
damage
the
transceiver's front
end.
Danger
of
explosion
if
a
lithium
battery
is
incorrectly
replaced.
Replace only with the
same
or
equivalent type
recommended
by
the battery
manufacturer.
Dispose
of
used
batteries
according
to
the manufacturer's
instructions.
Explosionsqefahr
bei
unsachgemaBen
Austaush der
Batterie.
Ersatz nur durch
denselben oder
einen
vom
Hersteller
empfohlenen
ahniichen Typ.
Entsorgung gebrauchter
Batterein
mach Angaben
des Herstellers.
ORDERING PARTS REPAIR
NOTES
Be
sure
to
include the following four points
when
ordering
1
.
replacement
parts:
2
1
.
1
0-diglt
order
numbers
2.
Component
part
number and
name
^
3.
Equipment model
name and
unit
name
4.
Quantity required
^
<SAMPLE ORDER>
1110003140
S.IC
NJM4558M(T1)
IC-775
MAIN UNIT
Spieces 5.
8810004620 Screw
PHM4x8ZK
IC-775
Topcover 10 pieces
Addresses are provided on
the inside
back cover
for
your
6.
convenience.
7.
8
.
Make
sure a problem
is
internal
before disassembling the
transceiver.
DO NOT
open the transceiver
until
the transceiver
is
disconnected from
its
power
source.
DO NOT
force
any
of
the variable
components. Turn
them
slowly
and smoothly.
DO NOT
short
any
circuits
or electronic parts.
An
insulated
tuning tool
MUST
be used
for
all
adjustments.
DO NOT
keep power
ON
for
a long time
when
the
transceiver
is
defective.
DO NOT
transmit
power
into
a
signal
generator or
a
sweep
generator.
ALWAYS
connect a 50
dB
to
60
dB
attenuator
between
the transceiver
and a
deviation
meter
or
spectrum analyzer
when
using
such
test
equipment.
READ
the instructions of test
equipment thoroughly before
connecting
equipment
to
the transceiver.