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REPLACEABLE
PARTS
Schematic
Designation
U108
u109
UllO
Ulll
u112
u113
u114
u115
U116
u117
U118
u119
u120
u121
u122
U123
U124
U125
U126
U127*
U128
VRlOl
VR102
VR103
VR104
VR105
VR106
VR107
VR108
VR109
VRllO
VRlll
w102
w103
w104
w105
W106
w107
W108
WllO
Will
w112
MO1
Table
S-l.
Mother
Board,
Parts
List
(Cont.)
Description
IC, 1 of 8 Decoder, 74LS138
IC, Octal Buffer, 74LS244
IC. 8.Bit Parallel-Serial
Converter, 74LS165
IC; Quad Z-Input OR Gate, 74LS32
IC, Dual JK Flip-Flop,
74LS73
IC, Dual 4.Input
NAND
Gate, 74LS20
IC, Dual JK Flip-Flop,
74LS73
IC, Octal Buffer, 74LS244
IC, Octal Buffer, 74LS244
IC, Octal Bus Transceiver, 741.5645
IC, Octal Buffer, 74LS244
IC, Pulse Modulator,
TLA94C
IC, 8.Bit Parallel-Serial
Convertel;
74LS165
IC, Quad 2.Input
NAND
Gate, 74LSO0
IC, Quad Z-Input NAND
Gate, 74LSO0
IC, H-Bit Parallel-Serial
Converter, 74LS165
IC, Octal GPIA Bus Transceiver, 75160A
IC, Octal GPIA Bus Transceiver, 75161A
IC, Triple 3.Input
AND Gate, 74LSll
IC, General Purpose Interface Adapter, 99~14
IC, D-Type Flip-flop,
74LS74
Regulator, IC, +15V, 78M15
Regulator, IC, -15V, 7915
Regulator, IC, -15V, 7915
Regulator, IC, +15V, 78M15
Regulator, IC, -5V, 7905
Regulator, IC, +5V, 7805
Regulator, IC, -15V, 7915
Regulator, IC, +15V, 7XM15
Regulator, IC, -5V, 7905
Regulator, IC, +5V, 7805
Regulator, Zener Diode, 6.2V, lN753
Connector Pin
Connector
Pin
Connector
Pin
Connector
Pin
Connector
Pin
!o%itor
Pin
Connector
Pin
Connector
Pin
Crystal, Oscillator
Circuit,
20MHz
Schematic
Location
Z/I:4
3iB'l
2/a
213 SW
3iA6
213 se\,
3/G
3112
31D2
3iB2
.?!F'l
~IiFl
21C.4
2ISev
2iSev
3:r;h
21AI
2//\2
2iB.i
2iB2
Keithley
Part No.
IC-IX2
I(:-230
IC-237
IC-2.17
IC-270
IC-232
I('-270
IC-230
lG230
IC-307
Ic'-230
ICGlU2
I<'-237
IC:-Ih3
IC-I63
IC-237
IC-2YX
IC-2')')
IC-IX')
1.51-4')
ICCI44
~IiICl
l/E3
l/D3
l/D3
l/D4
~l/D4
l/K
'I/D4
'l/D6
'l/D5
l/F2
rc-IY4
rc-I74
IC-174
IC-I94
IC-I84
IC-Y3
ICI74
IC4Y4
ICmlH4
IC-93
DZ-2 I
2iE3
Z/E3
2iF3
2iF4
2iC4
I!F2
cs-33Ym3
CSm33Y-3
cs-33'3.3
cs-339.5
cs-33'3.4
J-3
J-3
CS-33%3
CS-339-3
CS-38Y-6
3lAh
Cl<-25.3
jtatic Sensitive
S-9
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