Digital488 User’s Manual 916895 Service Information, 5-3
Digital488 Motherboard, Replaceable Parts
Schematic Part Number Description
C101-C108 C-5-.1 Ceramic, 25v
C110,C113 C-5-.1 Ceramic, 25v
C117,C118 C-5-15p Ceramic, 25v
C124 C-2-10 Electrolytic, 25v
C123 C-5-1 Ceramic, 25v
D101 RF-1 Small Signal Diode
D102-D106 DD-2 Red PC Mount
J101 CN-2 IEEE 488 Connector
R101 R-1-68K 68K½, 1/4w carbon
R102 RN-4-4.7K 4.7K½ x 7 SIP
R104 RN-2-470 470½ x 5 SIP
R105 R-2-39 39½, 1w carbon
U102 Digital488-600 Programmed EPROM
U103 IC-41 6264-15 8K x 8 CMOS SRAM
U104 IC-23 65B22 Versatile Interface Adapter
U106 IC-3 TMS9914ANL IEEE Controller
U107 IC-4 SN75160BN IEEE Driver
U108 IC-5 SN75162BN IEEE Driver
U110 Digital488-601 Programming Equation - 16L8 PAL
U113 IC-33 74LS04 Hex Inverter
U109 IC-30 LM7805CT Regulator - +5v
U201 IC-1 MC68B09P Microprocessor
Y101 CR-5 8.0000 MHz Crystal
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