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Model 722A
Sectio:l VI
Paragraphs 6-1 to 6-8
SECTION VI
REPLACEABLE PARTS
6-1. INTRODUCTION.
6-5. ORDERING INFORMATION.
6-2. This section contains information for ordering
replacement parts for the Model 722A DC Power
Supply.
6-3. 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. Manufacturer of the part in a five-digit code; see
list of manufacturers in appendix.
c. Typical manufacturer's stock number.
d. Total quantity used in the instrument (TQ column).
e. Recommended spare part quantity for complete
maintenance during one year of isolated service
(RS column).
6-4. Miscellaneous parts not indexed in table 6-1 are
listed at the end of table 6-2.
6-6. To order a replacement part, address order or
inquiry either to your authorized Hewlett-Packard
sales representative or to
CUSTOMER SERVICE
Hewlett-Packard Company
395 Page Mill Road
Palo Alto, California,
or, in Western Europe, to
Hewlett-Packard S.A.
Rue du Vieux Billard
o. 1
Geneva, Switzerland.
6-7. 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.
6-8. To order a part not listed in tables 6-1, 6-2, give
a complete description of the part and include its
function and location.
A
B
C
CR
DL
DS
= assembly
= motor
= capacitor
= diode
= delay line
= device signaling
(lamp)
F
FL
J
K
L
M
=
fuse
= filter
=
jack
= relay
= inductor
= meter
REFERENCE DESIGNATORS
P
=
plug
Q
= transistor
R
= resistor
RT
= thermistor
S
= switch
T
= transformer
v
= vacuum tube, neon
bulb, photocell, etc.
W
= cable
X
= socket
XF
= fuseholder
XV
= tube socket
XDS = lampholder
ABBREVIATIONS
elect = electrolytic
mtg = mounting
encap= encapsulated
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
voltage
pos
= position(s)
poly = polystyrene
pot
= potentiometer
rect = rectuier
td
= time delay
Ti0
2
= titanium dioxide
rot
= rotary
rms = root- mean- square
rmo = rack mount only
= toggle
= tolerance
= trimmer
= traveling wave tube
= variable
=
with
= watts
= wirewound
=
without
= optimum value
selected at factory,
average value
shown (part may
be omitted)
s- b
= slow - blow
Se
= selenium
sect = section(s)
Si
= silicon
sl
= slide
var
wi
W
ww
wlo
•
tog
tol
trim
twt
= normally closed
= neon
= normally open
= negative positive
zero-zero tem-
perature coefficient
= not separately
replaceable
nsr
NC
Ne
NO
NPO
Ge
=
germanium
grd
= ground ( ed)
h
=
henries
Hg
=
mercury
impg = impregnated
incd = incandescent
ins
= insulation ( ed)
K
= kilohms
f
= farads
fxd
= fixed
lin
= linear taper
log
= logarithmic taper
m
= milli = 10- 3
M
= megohms
ma
= milliamperes
minat= miniature
mfg = metal film on
glass
mfr
= manufacturer
bp
= mndpass
bwo = mckward wave
oscillator
EIA = Tubes and transistors
selected for best
performance will be
supplied u ordered
by
~
stock numbers;
tubes or transistors
meeting Electronic
Industries' Associa-
tion standards will
normally result in
instrument operating
within specllications
c
= carbon
cer
= ceramic
cmo = cabinet mount only
coef = coefficient
com = common
comp
=
composition
conn = connection
crt
= cathode - ray tube
dep
= deposited
det
= detector
J
01155-1
6-1
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