Measurement Computing Parallel488 - Manual (Page 49)

Section 6 Service Information
6.5
Schematic Part Number Description
R101 R-1-68K 68K½, 1/4w, 10% carbon
R102 RN-4-4.7K 4.7K½ x 7 SIP Network
R103 RN-1-10K 10K½ x 9 SIP Network
R104 RN-2-470 470½ X 5 SIP Network
R105 R-2-39 39½, 1 W, 10% carbon
R106 Not Used
R107 Not Used
R201 R-1-1K 1K½, 1/4w, 10% carbon
R202 R-1-1K 1K½, 1/4w, 10% carbon
R203 R-1-4.7K 4.7K½, 1/4w, 10% carbon
R204 Not Used
R205 Not Used
R206 R-1-1K 1K½, 1/4w, 10% carbon
S101 SW-8 Power Switch
S104 SW-6-8 8 Pole Dip
S201 Not Used
S202 Not Used
U101 Not Used
U102 IC-40 MBM2764-45 EPROM
U103 IC-78 84256-15 32K x 8 CMOS
SRAM
U104
IC-23 R65C22 Versatile Interface
Adapter
U105
Not Used
U106 IC-3 TMS9914ANL IEEE Controller
U107 IC-4 SN75160AN Driver
U108 IC-5 SN75162N Driver
U109 IC-30 LM7805CT +5v Regulator
U110 Parallel488-601 Programming Equation - 16L8
PAL
U111
Not Used
U112 Not Used
U113 IC-33 74LS04 Hex Inverter
U114 Not Used
U115 Not Used
U116 Not Used
U201 IC-1 MC6809B Microprocessor
U202 IC-2 6821 PIA
U203 Not Used
U204 Not Used
U205 IC-47 74LS05 Hex Inverter/OC
outputs
U206
IC-32 SN74LS373 Octal Latch
Y101 CR-6 8.0000 MHz Oscillator
TR-2 Power Supply ; 115 volts AC
TR-2E Power Supply ; 220 volts AC