THIS HARDWARE/SOFTWARE COMBINATION WILL ALLOW UNCONTAMINATED VIEWING OF THE U20 IN A VC2. PARTS: 1 MC1488 RS232 QUAD LINE DRIVER [AVAILABLE AT RADIO SHACK, PN# 276-2520 CURRENT PRICE, $1.29] 1 RCA PHONO PLUG 1 RS232 PLUG 3 FOOT OF SHEILDED AUDIO CABLE 1 27-128 200NS EPROM 1) UNPLUG THE VC, REMOVE THE TOP COVER & FRONT PANEL [NOTE: THERE IS A GROUND WIRE FROM FRONT PANEL TO CHASIS, THIS WILL NEED TO BE REMOVED TO GAIN ACCESS] 2) FOLLOWING MODS ARE TO THE SMALL CIRCUIT BOARD ON THE FRONT LEFT SIDE OF THE VC: MC1488 TO _____ --------------- PIN 7 GND ON CIRCUIT BOARD PIN 3 PIN 3 OF P311 PIN 1 PIN 4 OF P312 PIN 14 PIN 3 OF P312 PIN 2 PIN 5, BOTTOM ROW OF J310 ON J310 CUT TRACE GOING TO THE BOTTOM LEFTHAND PIN. 3) THE FOLLOWING MODS ARE TO THE MAIN PC BOARD ON THE TOP OF THE VC: CUT ONE END OF DIODES 403 AND 404 [LOCATED NEAR THE DATA OUT JACK] 4) REASSEMBLE THE VC. 5) MAKE UP AN RS232 PLUG WITH 3 FOOT OF SHEILDED AUDIO CABLE AND AN RCA PLUG. THE CENTER CONDUCTORGOES TO PIN 3 OF THE RS232 PLUG, SHEILD TO PIN 7 OF RS232 PLUG. 6) BURN AND INSTALL THE U20TOPC.BIN CHIP. 7) CONNECT RCA PLUG TO DATA OUT JACK ON VC, RS232 PLUG TO COMM. PORT OF PC. 8) RUN A COMM PROGRAM [ANY] AND SET TO 1200-N-8-1. 9) PLUG IN AND HIT "HELP" ON THE VC....A MENU WILL APPEAR ON THE MONITOR. ±±±±±±Ü ±±±±±±Ü ±±±Üܱ±±Ü ±±±±±±±±±±Ü ±±±±±±Ü ±±Ü ±±Ü ±±Ûßßßß ±±Ûß±±Û ±±Û±±Û±±Û ±±Ûßßßß ±±Ûßßßß ±±Û ±±Û ±±Û ±±Û ±±Û ±±Û ßß±±Û ±±Û ±±±±±Ü ±±±±±ßß ±±Û ±±Û ±±Û ±±Û ±±Û ±±Û ±±Ûßßß ±±Ûß±±Ü ±±±±±±Ü ±±±±±±Û ±±Û ±±Û ±±Û ±±±±±±Ü ±±Û ±±Û ßßßßßß ßßßßßß ßß ßß ßß ßßßßßß ßß ßß BBS 1200-N-8-1 402-223-2999 Downloaded From P-80 International Information Systems 304-744-2253