MBF COMPANY CONFIDENTIAL FIELD INFORMATION BULLETIN SERVICE GROUP(S): MICRO MFG: VISUAL TECHNOLOGY NACS TYPE(S): 6779,9779 MFG. MODEL(S): COMMUTER,V1080 CATEGORY: CPU DESC: COMMUTER COMPUTER *** TABLE OF CONTENTS AS OF 12/19/90 *** FIB 00001.General Information.........................................06/29/87 FIB 00002.COMMUNICATIONS TEST WRAPAROUND PLUG.........................06/30/87 FIB 00003.MEMORY.CONFIGURATION AND SWITCH SETTINGS....................06/30/87 FIB 00004.SYSTEM BOARD CONFIGURATION/SWITCH SETTINGS..................06/30/87 FIB 00005.FLOPPY DISK REPLACEMENT.....................................11/05/87 CPU-VISUAL TECHNOLOGY-COMMUTER,V1080----------------Table Of Contents Pg01 of 01 FIB 00001 06/29/87 *** General Information *** *** NACS MACHINE TYPES AND FEATURE NUMBERS *** 6779,9779 11/21/84 Catagory A - GENERAL A1 MAINTENANCE APPROACH This product will be maintained by both C.R.C. and On-site maintenance. All repairs on-site and in the C.R.C.'s will be sub- assembly replacement only. Repairable sub-assemblies will be repaired to the component level at Production in K.O.P. and Class 1 C.R.C.'s which have been approved for multi-layered PCB repair. Note: Class 1 C.R.C.'s may find it more cost effective to swap sub-assemblies rather than repair to the component level. A2 NACS MACHINE TYPES, FEATURE NUMBERS Description Mfg.P/N O/S_M/T CRC_M/T FEATURE# COMMUTER 1083 6779 9779 A3 FIELD REPACEABLE PARTS LISTING Description Mfg._P/N Sorbus_P/N MAIN LOGIC BOARD w/ 128k PA033-A01 VT000201 & CONNECTOR BRACKET PN007-005 " DISKETTE DRIVE (SD-521) DF002-A0X VT000202 DISK DRIVE CABLE --- VT000216 DISK DRIVE MOUNT BR004-00X VT000211 KEYBOARD KB011-011 VT000203 KEYBOARD CABLE CL016-A01 VT000218 DISPLAY, LCD DM001-A01 VT000204 w/ CABLE CL019-A0X " and BEZEL CU002-001-003 " FLIP COVER DZ002-A0X VT000208 SPEAKER w/ CABLE SB001-A01 VT000221 POWER SUPPLY PA022-A01 VT000205 AC PANEL ASSY PN007-A06 VT000224 w/ LINE FILTER --- " and SWITCH (NS000011) " FAN and AC HARNESS ASSY FN001-A01 VT000222 DC HARNESS ASSY WA006-A03 VT000215 EARTHING (GROUND) HARNESS WA011-A01 VT000220 HANDLE ASSY GZ001-006 VT000210 TOP COVER --- VT000207 w/ DISK DRIVE BEZEL CU002-001-003 VT000212 BASE BU002-A0X VT000206 REAR DOOR PN007-006 VT000210 LATCHES L&R (FLIP COVER) --- VT000227 LATCHES L&R (REAR DOOR) --- VT000228 IC, RAM, 64k x 1 4164 YY012064 ", " , 256k x 1 41256 YY014874 CPU-VISUAL TECHNOLOGY-COMMUTER,V1080----------------FIB001 Pg001 AVAILABLE DOCUMENTATION Description Mfg._P/N Sorbus_P/N OPERATOR'S GUIDE/DOS --- |Call Tech MAINTENANCE MANUAL --- |Library in SCHEMATIC SET --- |Frazer. A5 AVAILABLE TRAINING The MICRO FAMILIARIZATION and SOFTWARE FAMILIARIZATION CLASSES are available at the Education Center in Frazer. As this unit is 100% compatible with the IBM PC, microcomputer theory and operational information given in these classes is directly related to the COMMUTER. A training video tape should be made available from VISUAL soon. A6 SPECIAL TOOLS Description Mfg._P/N Sorbus_P/N NACS IBM Diag. Diskette PC000777 Comm. port wrap-plug Local manufacture See Hdwr Tech Talks ORIGINATOR: J. HILL CPU-VISUAL TECHNOLOGY-COMMUTER,V1080----------------FIB001 Pg002 FIB 00002 06/30/87 *** COMMUNICATIONS TEST WRAPAROUND PLUG *** COMMUTER COMM TEST WRAP AROUND PLUG There is a special wrap-around plug required to perform the ROM-based communication port test with external wrap-around. This wrap-around plug is manufactured locally. The plug, a female DB-25 connector (P/N 0R999374) and backshell (P/N YY12715) are available through the stock system. Wire the plug as shown below... 20 +----------| 4 +--------| | 2 +------| | | 3 +------| | | 22 +--------| | 5 +--------| | 6 +----------| 8 +----------| EXTERNAL WRAP-AROUND PLUG WIRING DIAGRAM Originator: Bob Appel 12/04/84 ORIGINATOR: R. APPEL CPU-VISUAL TECHNOLOGY-COMMUTER,V1080----------------FIB002 Pg001 FIB 00003 06/30/87 *** MEMORY CONFIGURATION AND SWITCH SETTINGS *** SYSTEM BOARD CONFIGURATION/SWITCH SETTINGS There is one 8-position switch pack on the system PCB. It controls the configuration of the number of floppy drives, type of display, amount of memory and installation of math co- processor. Position Function__________________________________________ 1 ALWAYS OFF 2 Math Co-processor: OFF- INSTALLED ON - NOT installed 3,4 Memory: Amount__ 3__ 4__ 64k ON ON 128k OFF ON 256k ON OFF 512k OFF OFF 5,6 Display: Type__________ 5__ 6__ 16x80 LCD ON ON 25x80 LCD ON OFF 25x40 COLOR OFF ON 25x80 COLOR ON OFF IBM MONOCHROME OFF OFF 7,8 Drives: Number_of 7__ 8__ 1 ON ON 2 OFF ON **** NOTE **** Switch positions 5 and 6 (display type) can be temporarily overridden by entering the key sequences below. The display type will revert back to the default (switch setting) whenever there is a cold or warm boot. Display_______ Sequence_____________________ 16x80 LCD Hold CTRL and ALT and press L 25x80 LCD Hold CTRL and ALT and press 8 25x40 COLOR Hold CTRL and ALT and press 4 25x80 COLOR Hold CTRL and ALT and press 8 IBM MONOCHROME Hold CTRL and ALT and press M Originator: Bob Appel 12/04/84 ORIGINATOR: J. HILL CPU-VISUAL TECHNOLOGY-COMMUTER,V1080----------------FIB003 Pg001 FIB 00004 06/30/87 *** SYSTEM BOARD CONFIGURATION/SWITCH SETTINGS *** COMMUTER MEMORY CONFIGURATIONS Memory Switchpack Size__ D-RAM IC's_____ PAL_Part_No._(U-115) S3__ S4__ 128k 64k (two rows) 1B001-002-00A OFF ON 256k 256k (one row) 1B001-003-00A ON OFF 512k 256k (two rows) 1B001-004-00A OFF OFF There are only two rows of RAM sockets in this machine. If only one row is used, as in the 256k configuration, use the row away from the front (U-133 thru U-141). Be sure the PAL and switch settings are correct for your particular configuration. Originator: Bob Appel 12/03/84 ORIGINATOR: J. HILL CPU-VISUAL TECHNOLOGY-COMMUTER,V1080----------------FIB004 Pg001 FIB 00005 11/05/87 *** FLOPPY DISK REPLACEMENT *** SYMPTOM: REPLACEMENT FLOPPY DRIVE DOESN'T MATCH OLD DRIVE. FIX: The old style drive with the lever (Epson Model 521L) is becoming difficult to supply since the manufacturer has discontinued this model. Our only source is from in-house repair and these will eventually go away. On occasion parts will have to ship the push button style (Epson Model 521) as a substitute. In order to provide the customer's machine with a matching pair of drives, replace both drives with the push button style. The respective part numbers are: NS090122 Epson Model 521L lever type - old style VT000202 Epson Model 521 Push button - new style Make sure that the extra drive is returned as GOOD/return to stock. ORIGINATOR: JOHN HILL CPU-VISUAL TECHNOLOGY-COMMUTER,V1080----------------FIB005 Pg001