HP 120A - Page 77

Sect. V Page 8
TABLE OF REPLACEABLE PARTS
♦ See ’ ’ List of Manufacturers Code Letters For Replaceable Parts Table ” .
CIRCUIT
REF.
DESCRIPTION, MFR. ♦ & MFR. DESIGNATION
($> STOCK
NO. #
R8
Resistor: fixed, composition,
100, 000 ohms, ±10%, 1/2W
B *
23-100K
3
R9
Resistor: fixed, composition,
100 ohms, ±10%, 1/2W
B *
23-100
10
RIO
Resistor: fixed, deposited
carbon, 80,000 ohms,
±1%, iw
NN *
31-80K
1
Rll
Resistor: fixed, deposited
carbon film, 59. 48 K ohms,
±1%, 1/2W
NN *
33-59. 48K 2
R12 Resistor: variable, wirewound,
500 ohms, 2 W
BO *
210-73 1
R13 Same as Rll
R14
Resistor: fixed, composition,
1000 ohms, ±10%, 1/2W B *
23-1K 1
R15 Resistor: variable, composition,
500,000 ohms, ±20%, 1/4W
BO *
210-227
1
R16 Resistor: fixed, composition,
18, 000 ohms, ±10%, 1/2W
B *
23-18K
2
R17
Same as R9
R18
Resistor: variable, composition,
250,000 ohms, ±20%, 1/4W
BO *
210-228
1
R19 Same as R9
R20
Resistor: fixed, deposited
carbon, 8100 ohms, ±1%,
1 W Electrical value adjusted at
factory,
NN *
31-8. IK 1
R21
This circuit reference not assigned
R22
Resistor: fixed, deposited
carbon, 98,000 ohms, ±1%,
IW
NN *
31-98K
2
R23
Resistor: variable, composition,
linear tapef, 500 ohms, ±10%
I *
210-25 1
R24
Same as R22
R25, 26
Resistor: fixed, composition,
39,000 ohms, ±10%, 1/2W
B*
23-39K
2
# Total quantity used in the instrument.