TECHNICAL BULLETIN INDEX Sorted by Bulletin Number 04/03/86 No. Catalog Description Rev. Date ============================================================================== II:001 26-4002 DRIVE O - Proper termination. 03/07/83 II:002 26-4002 64K RAM - Proper RAM board jumper configurations. 03/08/83 II:003 26-4002 VIDEO - Discussion of general video theroy. 04/28/83 II:006 26-4002 FDC - Zener diode to correct thermal failure. 03/09/83 II:005 26-4002 VDC board causing video generator PCB to fail. 03/09/S3 II:006 26-4160 CDC - Stepper motor always being enabled. 03/09/83 II:007 26-4160 CDC - Uisk binding , intermitcanc drive not ready. 03/10/83 II:008 26-4002 Video PCB - Proper heat sinking of Q4 and Q7. 03/11/83 II:009 26-4002 FDC - Modification for satellite board. 04/13/83 II:010 26-4002 FDC - XENIX thinks drive 0 is double sided. 02/18/83 II:011 26-4002 Motherboard causing apparent power supply problems 03/11/83 II:012 26-4160 Wiring differences between power supplies. 04/04/83 II:013 26-4002 FDC - C17 installed backwards. 03/11/83 II:014 26-4002 RCA Video - Vertical retrace line can be removed 03/11/S3 II:015 26-4002 Shugart - Proper tightening af stepper motor screw 03/11/83 II:016 26-4002 Shugart - Correcting Boot Error BC. 03/11/83 II:017 26-4002 CPU - Bisync modification and testing procedure. 03/14/83 II:018 26-4002 VDC - To correct dual addressing (Rev. A and B). 03/14/83 II:019 26-4002 FDC - Discussion of revised FDC board. 03/15/83 II:020 26-4002 Shugart - Modification to correct boot errors. 03/16/S3 II:021 26-4002 FDC - Won't format past track 43. 03/16/83 II:022 26-4002 Shugarc - Proper adjustment of sector sensor pot. 03/17/83 II:023 26-4002 VDC - Unexplained keyboard entries and/or lockup. 03/18/83 II:024 26-4002 VDG - Characters intermittently appearing on video 03/21/83 II:025 26-4002 CPU - To correct power on reset problem. 03/22/83 II:026 26-4002 CPU - Enhanced DMA modification instructions. 03/22/83 II:027 26-4002 FDC - Side select signal to external drives gone. 03/22/83 II:028 26-4002 FDC - To correct head load termination. 03/23/83 II:029 26-4002 Procedure for adjusting AA11081 power supply. 04/01/83 II:030 26-4002 Termination, jumpering, and test points for drives 01/24/84 II:031 26-4002 Jumpering for pullups to prevent memory errors. 03/23/83 II:032 26-4002 CPU - Possible missing wait state jumpers. 03/23/83 II:033 26-4002 CPU - Checksums for Model II/16 Boot ROM. 03/23/83 II:034 26-4160 CDC - Raw Data adjustment procedures. 03/29/83 II:035 26-4002 Shugarc - Wiring assembly for termination. 03/31/83 II:036 26-4002 Shugart - Schematics and component layouts for PCB 03/31/83 II:037 26-4002 Precautions for the modified power supply. 03/31/83 II:038 26-4002 Keyboard - Check keyboards for anti-static foil. 04/01/83 II:039 26-4002 TPI - Errors in drive 0, no operation in Expansion 06/16/S3 II:040 26-4002 Schematic corrections on the KeyTronic keyboard. 04/26/84 II:041 26-4002 To correct keyboard power on reset problems. 05/17/84 II:042 26-4002 Installing Multi-termina1 interface into Model II. 05/28/85