Replaceable Parts; Introduction; Ordering Information; Non- Listed Parts - HP 3476A Operating And Service Manual

Model 3476A Section VI
SECTION VI
REPLACEABLE PARTS
6-1. INTRODUCTION .
6-2. This section contains information for ordering replace-
ment parts. Table 6-3 lists parts in alphameric order of their
reference designators and 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 (Qty 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 in
Table 6-1.)
c. Typical manufacturer of the part is a five-digit code.
(See Table 6-2 for list of manufacturers.)
d. Manufacturer's part number.
6-3. Miscellaneous parts are listed in Table 6-3 following
their respective assemblies. General miscellaneous parts are
listed at the conclusion of Table 6-3.
6-4. ORDERIN G INF ORMATI ON.
6-5. To obtain replacement parts, address order or inquiry
to your local Hewlett-Packard Field Office. ( See Appendix
A for list of office locations.) Identify parts by their
Hewlett-Packard part numbers. Include instrument model
and serial numbers.
Table 6-1.
6-6. NON - LISTED PARTS.
6-7. To obtain a part that is not listed, include:
a.
b.
C.
d.
Instrument model number.
Instrument serial number.
Description of the part.
Function and location of the part.
6-8. PARTS CHANGES .
6-9. Components which have been changed are so marked
by one of three symbols; i.e., à, A with a letter subscript,
e.g., A
a
, or A with a number subscript, e.g., A
I 0
. A à with
no subscript indicates the component listed is the preferred
replacement for an earlier component. A A with a letter
subscript indicates a change which is explained in a note at
the bottom of the page. A A with a number subscript indi-
cates the related change is discussed in backdating (Section
VIII). The number of the subscript indicates the number of
the change in backdating which should be referred to.
6-10. PROPRIETARY PARTS .
6-11. Items marked by a dagger (t) in the reference desig-
nator column are available only for repair and service of
Hewlett-Packard instruments.
Standard Abbreviations.
Ag silver
Al aluminum
A amperels/
Au gold
capacito,
cer ceramic
coef coefficient
com common
comp
corm
dep deposited
DPDT double-pole doublerhrow
DPST double-pole single- throw
composition
connectton
elect electrolytic
encap encaphilated
freed
FE T field elect transistor
f xd fixed
GaAs elites arsenide
GH: gigahertz 10.
9
hart,
MI guardled)
Ge germanium
god groundled) nA
NC
H henryties) Me
Hg mercury NO
A assembly
(1 motor
BT . battery
capacitor
CR diode
DL delay line
DS . larnp
rnilic electrOnic part
fuse
ID
mpg
mod
ins
ABBREVIATIONS
..... hertz ( cyclists) per second/ NPO negative positive zero
inside diameter
impregnated
"ncandesren t
nsulattonledl
tin kilohrn(s) • 10.
3
ohms
kHz kilohertz • ire
3
hertz
inductor
ho linear taper
(0
9 logarithmic taper
ne milliampere*/ • 10
-3
«ernes
MHz magnet: • 10.
6
hertz
M
n t
megolunts) • 10.
6
ohms
met flee metal film
mfr menufacturer
ms millisecond
Intg movnting
mV millivelt10 • 10"
.
volts
AFF Inicroferadts)
IA enicroncondls1 R
MV
microvolltel • 10
-6
volts
top Mylare
nentlernseres1 • 10a amperes
... normally closed Se
neon net
normally open Si
DESIGNATORS
(zero temperature coefficient)
ns nanosecond/0 10
-9
seconds
nsr not separately replaceable
o
creed
obd order by description
OD outside diameter
peak
PA picoaneeree
po printed circuit
pF ,picofersd(s) 10
-12
farads
pin Peak inverse voltage
plo part of
POS Position(s)
Poly polystyrene
pot potentiometer
peak- to-peak
Min parts per million
prep precision ( temperature coellient.
long term stability and/or tolerance)
resistor
Rh rhodium
rinse roormeanrsquare
rot rotary
FL
Ha
IC
MP
relay
(resistor
meter TB
mechanical pert TC
TP
plug
selenium
section(s)
silicon
filter O transistor
heater OCR transistor-diode
interned circuit R resisto,
pek RT therrnista
S switch
transformer
terminal board
thermocouple
test point
slide
SPOT single- pole double- throw
SPST single- pole single- throw
Te tantalum
Te temperature coefficient
TiO2 titanium dioxide
tog toggle
sol tolerance
trim trimmer
TSTR transistor
yetis)
vamo alternating current seeking voltage
nor o aeiabte
vdcw direct torrent working voltage
wants)
eel with
wiv working inverse voltage
w/o • without
win «Rewound
optimum value selected at factory.
average value shown lea« may be omitted)
no standard type number asponed
selected or special type
0
Dupont de Nemours
TS
u
vacuum tube. neon bulb,photocell. er
c.1)1,
X socket
%DS
XF
terminal strip
micrococu it
lampholder
fuseholder
crystal
nletworS
6-1