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Model
4342A
SECTION
VI
REPLACEABLE
PARTS
Section
VI
Paragraphs
6-l
to 6-8
6-l.
INTRODUCTION
6-2.
This
section
contains
information
for
ordering
replacement
parts.
Table
6-2 lists
parts
in alpha-
numerical
order
of their
reference
designators
- and
indicates
the description
(see Table
6-l
for
abbrevi-
6-5.
Replaceable
Part Lists
for Option001
are given
in Appendix.
Changes
were
made in Assembly
AlAl
and Assembly
A5 only.
6-6.
ORDERING
INFORMATION
ations
used)
and HP part
number
of each
part,
to-
gether
with any applicable
notes.
6-7.
To obtain
replacement
parts,
address
order
or
inquiry
to your
local
Hewlett-Packard
Field
Office
6-3.
Miscellaneous
parts
associated
with each
as-
sembly
are listed
at the end of each assemblylisting.
Others
are listed
at the end of Table
6-2.
6-4.
Exploded
views
of major
parts
of the instrument
are given
in Figure
6-l
through
6-8 to aid in identify-
ing mechanical
parts.
The parts
in these
figures
are
keyed
to the mechanical
parts
index
which
are
also
included
in each figure.
(see
lists
at rear
of this
manual
for
addresses).
Identify
parts
by their
Hewlett-Packardpart
numbers.
6-8.
To obtain
a part
that is not listed,
include:
a.
Instrument
model
number.
b.
Instrument
serial
number
c.
Description
of the part.
d.
Function
and location
of the part.
Table
6-l.
List
of Reference
Designators
and Abbreviations
A
= assembly
B
= motor
BT
= battery
C
= capacitor
CP
= coupler
CR
= diode
DL
= delay line
DS
= device signaling (lamp)
A
= amperes
A. F.C.
= automatic
frequency
control
AMPL
= amplifier
8. F. 0. = beat frequency
oscillator
BE CU
= beryllium
copper
BH
= binder head
BP
= bandpass
BRS
= brass
BWO
= backward
wave oscillator
ccw
= counter-clockwise
CER
= ceramic
CM0
= cabinet mount only
COEF
= coefficient
COM
= common
COMP
= composition
COMPL = complete
CONN
= c0""ect0r
CP
= cadmium plate
CRT
= cathode-ray
tube
cw
= clockwise
DEPC
= deposited carbon
DR
= drive
ELECT
= electrolytic
ENCAP
= encapsulated
EXT
= external
F
= farads
FH
= flat head
FIL tl
= fillister
head
FXD
= fixed
= germanium
= glass
= grou"d(ed)
REFERENCE
DESIGNATORS
E
= mist electronic
part
F
= fuse
:
FL
= filter
R
J
= jack
RT
K
= relay
S
L
= inductor
T
M
= meter
TB
MP
= mechanical
part
TP
= plug
= transistor
= resistor
= thermistor
= switch
= transformer
= terminal
board
= test point
H
HEX
HG
HR
IF
IMPG
INCD
INCL
INS
INT
K
LH
LIN
LK WASH
LOG
LPF
ABBREVIATIONS
= henries
= hexagonal
= mercury
= hour(s)
NPN
NRFR
= intermediate
freq
= impregnated
= incandescent
= include(s)
= insulation(ed)
NSR
OBD
OH
= internal
= kilo = 1000
ox
= left hand
= linear taper
= lock washer
= logarithmic
taper
= low pass filter
P
PC
PF
PH BRZ
M
= milli = 10-S
MEG
= "leg = 106
MET FLM
= metal film
MET OX
= metallic
oxide
MFR
= manufacturer
MINAT
= miniature
MOM
= momentary
MTG
= mounting
MY
= "mylar"
PHL
PIV
PNP
p/o
POLY
PORC
POS
POT
PP
N
= "a"0 (10-9)
PT
N/C
= normally
closed
PWV
NE
NI PL
N/O
NPO
= neon
= nickel plate
RECT
= normally
open
RF
= negative positive
zero
RR
(zero temperature
coefficient)
RMO
= neeative-oositive-
"e&ive
= not recommended
for
field replacement
= not separately
replaceable
= order by description
= oval head
= oxide
= peak
= printed circuit
= picofarads
= 10
farads
= phosphor bronze
= Phillips
= peak inverse
voltage
= positive-negative-
positive
= part of
= Po1ystYrene
= porcelain
= position(s)
= pote"ttmneter
= peak-to-peak
= point
= peak working
voltage
= rectifier
= radio frequency
= round head or
right hand
=
rack
mount only
V
VR
W
X
Y
RMS
RWV
= root-mea"
square
= reverse
working
voltage
S-B
SCR
SE
SECT
SEMICON
SI
SIL
SL
SPG
SPL
SST
SR
STL
= slow-blow
= screw
= selenium
= section(s)
= semiconductor
= silicon
= silver
= slide
= spring
= spedal
= stainless
steel
= split ring
= steel
TA
= tantalum
TD
= time delay
TGL
= toggle
THD
= thread
TI
= titanium
TOL
= tolerance
TRIM
= trimmer
TWT
= traveling
wave tube
u
= micro = 10-S
VAR
VDCW
W/
W
WN
= variable
= dc working
volts
= with
= watts
= working
inverse
voltage
= wirewound
= without
= YOCUU~I, tube, "eu"
bulb, photocell,
etc.
= voltage regulator
= cable
= socket
= crystal
6-l
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