Model 204B
Section
VI
Paragraphs 6-1 to 6-7
SECTION
VI
REPLACEABLE PARTS
6-1.
INTRODUCTlON.
6-2. This section contains information for ordering
replacement parts. Table
6-1
lists parts in alpha-
numerical order
of
their reference designators and
indicates the description and
@
stock number
of
each
part, together with any applicable notes. Table 6-2
lists
parts in alpha-numerical order of their
@
stock
numbers and provides the following information on
each part:
a.
Description of the part
(see
list
of abbreviations
below).
b. Typical manufacturer of the part in a five-digit
code; see
list
of manufacturers in appendix.
c. Manufacturer’s stock number.
d. Total quantity used in the instrument (T& column).
e.
Recommended spare part quantity
for
complete
maintenance during one year of isolated service
available upon request.
6-3. Miscellaneous parts not indexed in table 6-1
are
listed
at
the end of
table
6-2.
6-4.
ORDERING INFORMATION.
6-5.
To
order
a
replacement part, address order
or
inquiry to your authorized Hewlett-Packard Sales
or
Service Office.
A
map of all Hewlett-Packard Field
Offices
is
provided for your use at the rear of the
manual.
6-6. Specify the following information for each part:
a.
Model and complete serial number of instrument.
b. Hewlett-Packard stock number.
c. Circuit reference designator.
d. Description.
6-7. To order apart not listed
in
Tables 6-1 and 6-2,
give complete description of the part and include its
function and location.
A
=
assembly
B
=
motor
C
=
capacitor
CR =diode
DL
=
delay line
DS
=
device signaling (lamp)
E
=
misc electronic part
A
=
amperes
BP
=
bandpass
BWO
=
backward wave
CER
=
ceramic
CM0
=
cabinet mount only
COEF= coefficient
COM
=
common
COMP= compsition
CONN= connection
CRT
=
cathode-ray tube
DEPC= deposited carbon
EIA
=
Tubes or transistors
meeting Electronic
Industries’ Associa-
tion standards will
normally result in
instrument operating
within specifications;
tubes and transistors
oscillator
selected
for
best
performance will be
by @stock numbers.
ELECT
electrolytic
ENCAP
encapsulated
supplied if ordered
REFERENCE DESIGNATORS
F
=
fuse
P
plug
FL
=
filter
Q
=
transistor
J
=
jack
R
=
resistor
K
=
relay
L
=
inductor
M
=
meter
MP
=
mechanical part
RT
=
thermistor
S
=
switch
T
=
transformer
ABBREVIATIONS
F
=
farads NC
FXD
=fixed NE
NO
GE
=
germanium NPO
GL
=
glass
GRD
=
ground(ed)
H
=
henries
NSR
=
normally closed
=
neon
=
normally open
=
negative positive zero
(zero temperature
coefficient)
not separately
replaceable
HG =mercury
HR
=
hour@)
IMPG
=
impregnated
INCD
=
incandescent
INS
=
insulation(ed)
K
=
kilo
=
1000
LIh’
=
linear taper
LOG
=
logarithmic taper
6
M
=
meg
=
10
MA
=
milliamperes
MINAT
=
miniature
METFLM= metal film
.
MFR
=
manufacturer
MTG
=
mounting
MY
=
mylar
OBD
=
order
by
de-
scription
P =peak
PC
=
printed circuit
board
PF
=
picofarads
=
10-12
farads
PP
=
peak-to-peak
PIV
=
peak inverse
POR
=
porcelain
POS
=
position(s)
POLY= polystyrene
POT
=
potentiometer
RECT= rectifier
ROT
=
rotary
RMS
=
root- mean- square
RMO
=
rack mount only
voltage
V
=
vacuum tube, neon
bulb, photocell, etc.
W
=cable
X
=
socket
XF
=
fuseholder
XDS
=
lampholder
2
=
network
S-B
=
slow-blow
SE
=
selenium
SECT= section(s)
SI
=
silicon
SIL
=
silver
SL
=
slide
TA =tantalum
TD
=
time delay
TI
=
titanium dioxide
TOG
=
toggle
TOL
=
tolerance
TRIM= trimmer
TWT
=
traveling wave tube
u
=
micro
=
10
VAC =vacuum
VAR
=
variable
W/
=
with
W
=
watts
Ww
=
wirewound
W/O =without
*
=
optimum value
selected
at
factory,
average value
shown (part may
be omitted)
-6
=number
01369-3
6-
1
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