Thermo Scientific GENESYS 20 Service Manual page 115

Ref. Des. Description
U23 IC 74HC04
U24 IC 74HC139
U25 IC 74HC154N
U26 IC MC34166T
U27 IC TL071CP
U28 IC LM78L05
U29 IC LM337T
U30 IC LM78L08
U31 IC CD4051
U32 IC 74HC132
U33
U34
U35
U36
U37 IC ULN2803
U40 IC TLC2272ACP
U41 IC TL072P
U42 IC MC1404U5 (REF 02)
U43 IC CD4053(MC14053)
U44 IC DAC08
W1 Copper Connection on Board
W3 Copper Connection on Board
W4 Copper Connection on Board
W5 Copper Connection on Board
W6 Not Presently Used
W7 Not Presently Used
W8 Not Presently Used
W9 Copper Connection on Board
XBT1 Not Presently Used
XU1 Not Presently Used
XU2 Not Presently Used
XU3 IC Socket, 28 Pin ZIF
XU4 IC Socket, 28 Pin
XU22 IC Socket, 44 Pin PLCC
Y1 Not Presently Used
Y2 Crystal, 11.0592 MHz
Z1 Not Presently Used
Z2 Resistor Netwk, Iso., 470 Ohm DIP (8)
S/A U17 74HC273
S/A U17 74HC273
S/A U17 74HC273
S/A U17 74HC273
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Drawings and Schematics