SEGMENT 1

TM 11-6625-3081-23 7-3. DIGITAL COMPUTER ASSEMBLY 1A11 7 - 3 INPUT CODE: CALCST (cont) c . SEGMENT 1 1. VDT DISPLAY IEEE 488 BUS EXTENDER IS SUSPECT. PERFORM THE FOLLOWING REPLACE ACTIONS IN THE ORDER LISTED. (REFERENCE TM 11-6625-3081-23 FOR REPLACEMENT PROCEDURES. ) REF. DES. PART NO. NAME 1. EQUATE HP37203A HP-IB EXTENDER 2. 1A9A1 HP37203A HP-IB EXTENDER 3. 1A9A2 HP37203A HP-IB EXTENDER 4. 2A2A8 HP37203A HP-IB EXTENDER 2. CORRECTIVE ACTION - SEGMENT 1 (a) Remove EQUATE HP-IB Extender. Check contacts of mating connectors and repair if required. Install replacement extender and perform CALCST test. If CALCST test passes, no further action required. If this segment displayed again, proceed to (b). If another segment displayed, proceed to that segment and continue troubleshooting. (b) Remove Extender 1A9A1. Check contacts of mating connectors and repair if required. Install replacement 1A9A1 and perform CALCST test. If CALCST test passes, no further action required. If this segment displayed again, proceed to (c). If another segment displayed, proceed to that segment and continue troubleshooting. (c) Remove Extender 1A9A2. Check contacts of mating connectors and repair if required. Install replacement 1A9A2 and perform CALCST test. If CALCST test passes, no further action required. If this segment displayed again, proceed to (d). If another segment displayed, proceed to that segment and continue troubleshooting. (d) Remove Extender 2A2A8. Check contacts of mating connectors and repair if required. Install replacement 2A2A8 and perform CALCST test. If CALCST test passes, no further action required. If this segment displayed again, proceed to (e). If another segment displayed, proceed to that segment and continue troubleshooting. 7-17