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Sect. V Page 2
00010-2
Model 721A
TABLE OF REPLACEABLE PARTS
CIRCUIT
REF.
DESCRIPTION, MFR. * &MFR. DESIGNATION
Cl
C2
C3, 4, 5
C6
C7
C8
C9
CIO
Cll
CR1,2, 3,4
CR5, 6
CR7
CR8
DS1
FI
J1
Capacitor: fixed, ceramic,
.05
n
f ±20%, 400 vdcw
Capacitor: fixed, electrolytic
500 /if, 75 vdcw
Capacitor: fixed, electrolytic
40 /if -15% + 100%, 50 vdcw
Capacitor: fixed, mylar,
. 02 4f ±20%, 400 vdcw
Capacitor: fixed, electrolytic,
20 ,if -15% + 100%, 50 vdcw
Capacitor: fixed, electrolytic
4 |Uf -15% + 20%, 60 vdcw
Same as C7
Capacitor: fixed, mylar,
. 0047 /if ±10%, 400 vdcw
Capacitor: fixed, mylar,
0.1 ,uf ±5%, 200 vdcw
Rectifier, silicon: 100
PIV,
500 ma
Diode
Ml
PI
Q1
Q2, 3, 4
NN*
CC*
CC*
CC*
CC*
AH*
cw*
cw*
BV*
HP*
HP*
Diode, Breakdown
Same as CR1
Light, indicator: 1/25 W, neon, NE2A
Eldema
Fuse: 1/4 amp, slow-blow, 115 volt operation
Fuse: . 15amp, slow-blow, 230 volt operation
T*
STOCK
NO.
i TQ
Consists of:
Binding post, black
Binding post, red
Insulator, binding post, dual
Insulator, binding post, triple
HP*
HP*
HP*
HP*
Meter
Cord, power
Transistor: 2N375
Transistor: 2N508
HP*
Cornish Wire Co.
**
* *
0150-0052
0180-0047
0180-0050
0170-0024
0180-0049
0180-0008
0170-0021
0170-0019
1901-0008
G-29A-10
G-29A-3
1450-0037
2110-0018
2110-0017
AC-10C
AC-10D
AC-54A
AC-54C
1120-0069
8120-0037
18-50-0015
1850-0013
RS
1
1
1
2
1
i
1
1
1
1
3
* See " List of Manufacturers Code Letters For Replaceable Parts Ta
e .
TQ - Total quantity used in the instrument.
** Any transistor meeting EIA standards.
RS - Recommended spares for one year isolated service for one instrument.
2
1
1
10
1
1
0
0
1
1
1
3
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