Model
4
12A
Section
VI
SECTION
VI
REPLACEABLE
PARTS
6-1.
INTR
0
D
UCTlO
N.
6-2.
This section contains information for ordering
replacement parts. Table
6-1
lists parts in alphameric order
of
their reference designators arid indicates the description,
hp- part number of each part, together with any applicable
notes, and provides the following:
a.
Total quantity used in the instrument (TQ
column). The
total
quantity of a part is given the
first time the part number appears.
b. Description
of
the part. (See list
of
abbreviations
below
.)
c. Typical manufacturer of the part in a fivedigit
code. (See Appendix
A
for list
of
manufacturers.)
d. Manufacturer's part numbcr.
A =aswmhly
B
=
motor
BT
=
battery
C
=
ca[mritor
CR
=
dicdc
DL =delay llne
DS
=lamp
E
=
misc electronic part
At?
A1
A
Au
C
cer
coef
com
comp
conn
dep
DPDT
DPST
elect
encap
P
FET
fxd
GaAS
GHz
nd
Ge
grd
H
Hb'
Hz
.'"
'
=
silver
=
aluminum
=
ampere
(s)
=
gold
=
capacitor
=
ceramic
=
coefficient
=
common
=
composition
=
connection
=
deposited
=
double-pole double-
throw
=
double-pole single-
throw
=
electrolytic
=
encapsulated
=
farad
(9)
=
field effect transistor
=
fixed
=
bmllium arsenide
=
gigahertz
=
hertz
=
guard (ed)
=
germanium
=
ground (ed)
=
hen* (ies)
=
merrury
=
hertz (cycle
(8)
per
second)
F
FL
HR
1c
J
K
L
M
=
fusc
=
filter
=
heater
=
integrated circuit
=jack
=
relay
=
inductor
=
meter
6-3.
Miscellaneous parts are listed at the end of Table
6-1.
6-4.
0
R
D
E
R
ING
INFO
RMATIO
N.
6-5.
To obtain replacement parts, address order
or
inquiry
to your local Hewlett-Packad Field Office. (See Appendix
B
for list of office locations.) Identify parts by their
Hewlett-l'ackard part numbers. Include instrument model
and serial numbers,
6-6.
NON-LISTED
PARTS.
6-7.
To obtain a part that is not listed, include:
a.
Instrument model number.
b.
Instrument serial number.
c.
Dcscription of the part.
d. Function and location of thc part.
DESIGNATORS
UP
=
mechanical
part
P
=
plug
Q
=
transistor
FR
=
transistor-diode
=
resistor
RT =thermistor
S
=
switch
T =transformer
ABBREVIATIONS
ID
=
inside diameter ns
=
nanosecond
(8)
=
impg
=
impregnated
seconds
incd
=
incandescent
nsr
=
not separately replace-
ins
=
insulation (ea)
able
kn
=
kilohm
(s)
=
lo''
ohms
0
=
ohm
(8)
=
kfio,,,,rh
l0+3
hertz
OM
=
order
by
description
OD
=
outside diameter
=
peak
P
PC
=printed circuit
L
=
inductor
lin
=
linear
taper
loft
=
logarithmlc taper
m
=
mfill
10''
mA
=
milliampere
(s)
=
10''
amperes
MHz
Mn
=
megahertz
=
10"
her&
=
megohm6)
=
106
ohms
met
flm
=
metal
film
mfr
=
manufacturer
mtg
=
mounting
mV
F
=
micro
=
10-8
PV
my =Mylar
@
n~
=
nanoampere
(s)
=
amperes
NC
=
normally closed
Ne =neon
NO
=
normally open
NPO
=
negative positive zero
(zero temperature co-
efficient)
=
millivolt
(8)
=
IO-'
volts
=
microvolt
(s)
=
10''
volts
@
Dupont de Nemours
R
Rh
rms
rot
Se
sect
Si
=
picoZarad
(s)
=
lo-''
farads
=
peak inverse voltage
=
part
of
-=
position
(8)
=
polystyrene
=
potentiometer
=
peak-to-peak
=parts per milllun
=
precision (temperature
ocx?fficient. long term
stability. and/or tol-
erance)
=
resistor
=
rhodium
=
root-mean-square
=
rotary
=
srlenium
=
section
(s)
=
silicon
TC
=
thcrmoronlplc
V
=
vacuum
IUIW.
tnwn
W
=
ra1,le
X
=
socket
XDS
=
lampholder
XF
=
fuseholder
Z
=
nctwork
hulb. photocrll. ctv.
sl
=
slide
SPDT
=
slngle-pole double-
throw
SPST
=
single-pole single-
throw
Ta =tantalum
TC
=
temperature cwfficlent
TLO?
=
titanlum dioxide
tog
IO1
trim
TSTR
V
vacw
var
vdcw
=toggle
=tolerance
=
trimmer
=transistor
=
alternating current
working voltage
=
variable
=
direct current working
voltage
=
volt
(8)
W
=watt
(a)
w/ =with
wiv
=
working inverse vultagc
w/o =without
ww
=
wirewound
*
=
optimum value selected
at factory. averagc
value shown (part may
be
omitted)
ber
assigned (seleetud
or
special type)
**
=
no standard type num-
00
1
29-5
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