Keithley SourceMeter 3A 2420 Service Manual page 98

Table 6-2 (cont.)
Digital board parts list
Circuit designation
R66
R67
R73,74,76,78-81,83,7,60,69,71,85-89
R77
R82
R84,109,110,38
R9,11,12,16,20
R90
R93
R94
R97,100
R99,107
RT101
RV1
RV101
S01,2
S1
T1
T2
T3
TP1-12, 14-18
U10
U11
U12,14
U13
U15
U16
U17
U18
U19
Description
RESISTOR, METAL FILM
RES, 8.06K, 1%, .1W THICK FILM
RES, 10K, 1%, 100MW, THICK FILM
RES, 15k, 1%, 100MW, THICK FILM
RES, 499, 1%, 100MW THICK FILM
RES, 10K, 1%, 100MW, THICK FILM
RES,100,5%,250MW,METAL FILM
RESISTOR, THICK FILM
RES, 6.81K, .1%, .125W THIN FILM
RESISTOR, CERAMIC
RES, 200, 1%, 100MW, THICK FILM
RES, 150K, 1%, 100MW, THICK FILM
INRUSH CURRENT LIMITER
VARISTOR
METAL OXIDE VARISTOR
SOCKET PLCC-032-T-A
SWITCH,PUSHBUTTON (6 POLE)
TRANSFORMER
TRANSFORMER
TRANSFORMER
CONN,TEST POINT
LARGE SCALE IC, SMT
IC, VOLT COMPARATOR LM393D
LARGE SCALE IC
IC, GPIB ADAPTER, 9914A
PROGRAMMED ROM
PROGRAM
IC, SERIAL EPROM 24LC16B
IC, REGULATOR SWITCHING
78ST105SC
IC, SCHMITT-TRIGGER NAND GATE
Replaceable Parts 6-15
Keithley
part no.
R-464-100K
R-418-8.06K
R-418-10K
R-418-15K
R-418-499
R-418-10K
R-376-100
R-418-1.07K
R-456-6.81K
R-463-.1
R-418-200
R-418-150K
RT-23
VR-10
VR-7
SO-143-32
SW-466
TR-313A
TR-312A
TR-317A
CS-553
IC-980
IC-775
LSI-162-70
LSI-123
2400-803-*
2400-804-*
LSI-153
IC-1080
IC-950