Keithley 2430

6-18 Replaceable Parts
U18 IC, REGULATOR SWITCHING,
78ST105SC
IC-1080
U2 IC, MICROMANAGER, DS12365-10 IC-884
U20 IC, OCTAL INTERFACE BUS, 75160 IC-646
U21 IC, DUAL POWER MOSFET DRIVER,
TSC426
IC-437
U1, U22 IC, DUAL D-TYPE F/F, 74HC74 IC-773
U23, U25, U29 IC, POS NAND GATES/INVERT, 74HCT14 IC-656
U24 IC, TRIPLE 3 IN NAND, 74F10 IC-659
U26 IC, VOLTAGE REGULATOR, LM340-12 IC-60
U28 IC, POWER VOLT REF, LT1004CZ 2.5 IC-929
U3 MICROCONTROLLER, MC68332-FC LSI-161
U4 IC, +5V, RS-232 TRANSCEIVER, MAX202 IC-952
U5 IC, OP-AMP, AD705JR IC-814
U6 IC, OCTAL INTER BUS TRANS, 75161 IC-647
U7 PROTECTED QUAD POWER DRIVERS IC-1212
U8 POWER FACTOR CONTROLLER IC-1113
U9 IC, HEX INVERTERS, 74HCT04 IC-880
VR1 DIODE, ZENER 30V BZX84C30 DZ-106-30
VR2 DIODE, ZENER, REGULATOR DZ-120
Y1 CRYSTAL, FSM327 CR-41
Table 6-2 (cont.)
Digital board parts list
Circuit designation Description
Keithley
Part No.