Keithley 2400

2400-902-01 (G - Feb 2006)
Model 2400 Service Manual 6-12
Replaceable Parts
U8 IC, NEG VOLTAGE REG -15V, 500MA, 79M15 IC-195
U9 IC, HEX INVERTERS, 74HCT04 IC-880
U11 IC, VOLT COMPARATOR, LM393D IC-775
U12,14 LARGE SCALE IC LSI-162-70
U13 IC, GPIB ADAPTER, 9914A LSI-123
U15 PROGRAMMED ROM 2400-803-*
U16 PROGRAMMED ROM 2400-804-*
U17 IC, SERIAL EPROM, 24LC16B LSI-153
U18 IC, +5V, VOLTAGE REGULATOR, LM2940CT IC-576
U19 IC, SCHMITT-TRIGGER NAND GATE IC-950
U20 IC, OCTAL INTERFACE BUS, 75160 IC-646
U21 IC, DUAL POWER MOSFET DRIVER, TSC42 IC-437
U23,25 IC, POS NAND GATES/INVERT, 74HCT14 IC-656
U24 IC, TRIPLE 3 IN NAND, 74F10 IC-659
VR1 DIODE, ZENER, 33V, IN4752A DZ-68
Y1 CRYSTAL, FSM327 CR-41
*Order current firmware revision level.
Table 6-2 (cont.)
Digital board parts list
Circuit designation Description
Keithley
part no.