HP 654A Operating And Service Manual page 51

Model 654A
Section VI
SECTION VI
REPLACEABLE PARTS
6-1. INTRODUCTION.
6-2. This section contains information for ordering
replacement parts. Table 6-1 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 (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 five-digit
code. (See Appendix A for list of manufacturers.)
d. Manufacturer's part number.
6-3. Figures 6-1 and 6-2 illustrate the replaceable
mechanical parts used in the 654A. Miscellaneous parts are
listed at the end of Table 6-1.
64. ORDERING INFORMATION.
6-5. To obtain replacement parts, address order or inquiry
to your local Hewlett-Packard Field Office. (See Appendix
B for list of office locations.) Identify parts by their
Hewlett-Packard part 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. Description of the part.
d. Function and location of the part.
Ag silver
Al aluminum
A arnpareis) ID inside diameter
Au gold impg impregnated
incd incandescent
C capacitor ins insulation(ed)
ter ceramic
cad coefficient kn kilohm(s) -- 10+
3
ohms
COT
common kHz kilohertz = 10
+3
hertz
comp composition
conn connection L inductor
lin linear taper
dep deposited log logarithmic taper
DPDT double- pole double- throw
DPST double- pole single- throw MA milliampere(s) = 10
-3
amperes
MHz megahertz = 10
+6
hertz
elect electrolytic M
n
megohm(s) - 10
+6
ohms
encap encapsulated met flm metal film
mfr manufacturer
F farad(s) ms millisecond
FET field effect transistor mtg moeting
fed fixed mV millivolt(s) - 10 volts
be microfaradis)
GaAs gallium arsenide as microsecond(s)
GHz gigahertz = 10
+9
hertz ( 4 V microvolt(s) -= 10
-6
volts
gd guardIed) my Mylar0
Ge germanium
find groundIed) nA nanoampereisl=
i cr9
amperes
NC normally closed
H henry ( ies) Ne neon
Hg mercury NO normally open
ABBREVIATIONS
Hz hertz ( cycle(s) per second) NPO negative positive zero
A
BT
CR
DL delay line
DS lamp
E rnisc electronic part
fuse
(zero temperature coefficient)
ns nanosecond(s) = 10'
9
seconds
nsr not separately replaceable
ohm(s)
obd order by description
OD outside diameter
peak
pA picoamperel s)
pc printed circuit
pF picof arad ( s) 10
-12
farads
pin peak inverse voltage
pfo part of
poS position ( s)
Poly polystyrene
pot potentiometer
p-p peak-to- peak
PPm parts per million
prec precision ( temperature coeffient,
long term stability and/or tolerance)
resistor
Rh rhodium
rTS
root- mean-square
rot rotary
Se selenium
sect section ( s)
Si silicon
DECIMAL MULTIPLIERS
average
Prefix Symbols Multiplier Prefix
Symbols Multiplier
:era
T
1012
centi
c 10
-2
giqa
G 10
9
milli m
10
-3
mega Mor Meg
10
6
micro 11
10
-6
kilo
K or k
1.3
nano
n 10_
9
hecto h
10
2
pico p
10-12
deka da 10
femto f 10
-15
deci d
10'
1
SIT
a
10
49
assembly
TTOr
battery
capacitor
diode
FL
HR
IC
MP
DESIGNATORS
filter O transistor
heater OCR transistor-diode
integrated circuit R resistor
jack RI therrnistor
relay S switch
inductor T transformer
meter TB terminal board
mechanical part IC thermocouple
plug TP test point
slide
SPOT single-pole double- throw
SPST single- pole single- throw
Ta tantalum
TC temperature coefficient
TiO2 titanium dioxide
tog toggle
tol tolerance
trim trimmer
TSTR transistor
✓ volt(s)
vacvv alternating current working voltage
WM
variable
vdcw direct current working voltage
watt(s)
vs/ with
win working inverse voltage
w/cr without
env
wirevvound
optimum value selected at factory,
value shown ( part may be omitted)
no standard type number assigned
selected or special type
0
Dupont de Nemours
STD-B-2734
IS terminal strip
U microcircu it
✓ vacuum tube, neon bulb,photocell, etc.
able
X socket
XDS lampholder
XF fuseholder
Y crystal
2 network
6-1