------------------------------------------------------------------------- IBM ECA Engineering Change Announcement Parts removed from this machine and returned to IBM must be genuine, unaltered IBM Parts IBM World Trade Corporation, CE Department Germany ------------------------------------------------------------------------- ECA number: ECA030 Service code: 33 EC number: EC000000 Parts source: LOC Plant of control: 27 Mandatory: N Automatic shipment: N Date created: O87/06/01 Availability date: 87/07 Date last altered: A92/05/18 Abstract: 1.2MB DISKETTE DRIVE MAY NOT FUNCTION IN 1.2MB MODE. USA=A, EMA=A, AFE=A PURPOSE: THIS ECA WILL EXPIRE 08/31/92. TO CORRECT THE PROBLEM WHERE THE 1.2MB DISKETTE DRIVE WILL NOT READ OR WRITE DISKETTES IN 1.2 MB MODE, WHEN THERE ARE TWO DISKETTE DRIVES INSTALLED IN THE SYSTEM UNIT AND DRIVE "B" IS A 3.5", 720KB DRIVE. THIS PROBLEM ONLY OCCURS IF THE 1.2MB DRIVE INSTALLED IN POSITION "A" IS MANUFACTURED BY "ALPS" FOR IBM. -------------------------------------------------------------------- Type, Machines Affected Model, With and/or Feature/Device B/M to be Service System Stage B/M Description Installed Hours Hours 5170 B/M0000000 PERSONAL COMPUTER "AT" B/M0000000 00.8 00.8 319 339 -------------------------------------------------------------------- PHYSICAL CHECK: CHECK THE 3.5" DISKETTE DRIVE FOR MANUFACTURE NAME "TOSHIBA". IF THE DRIVE IS MANUFACTURED BY TOSHIBA THE NAME CAN BE LOCATED ON THE CIRCUIT CARD ON THE BOTTOM OF THE DRIVE OR IN SOME CASES ON THE ALUMINUM CASTING. CHECK THE CIRCUIT CARD LOCATED ON TOP OF THE DRIVE FOR LAND PATTERNS GOING TO CARD CONNECTORS 2 AND 4 (SEE FIGURE -1-) LOCATED IN PREREQUISITE SECTION. ALSO THERE IS A LABEL ON THE REAR OF THE DRIVE (NOT ON THE TRAY) THE INFORMATION ON THE LABEL IS AS FOLLOWS. MADE IN JAPAN FDD XXXXXXXXX F0X NO. XXXXXXXXXX FUJI TOSHIBA CORPORATION * NOTE - THE X'S COULD BE ANY NUMBER OR COMBINATION OF NUMBERS LETTERS. IF THE F0X LOCATED ON THE SECOND LINE IS F02, F03, OR F04 THE DRIVE SHOULD BE REPLACED, IF THE SYSTEM DEMONSTRATES THE PROBLEM AS DESCRIBED IN THE "PURPOSE" SECTION. WITH THE DRIVE INSTALLED IN THE TRAY THE LABEL IS DIFFICULT TO TO SEE, SO YOU MAY HAVE TO REFERENCE FIGURE -1-. THIS ECA WILL EXPIRE 08/31/92. PREREQUISITES: NONE ---------------------------------------------------- ! LAND PATTERN TO CARD EDGE CONNECTOR -2- ! ! ! ! ! ! (THIS CARD LOCATED ON TOP SIDE OF 3.5" ! ! ! DISKETTE DRIVE) ! ! ! ! ! ! ! ! ! O--! ! ! ! !<---LAND PATTERN TO CARD EDGE ! ! ! O ! CONNECTOR -4- ! ! ---->! ! ! !------ ! ! ------! ! ! ! ! !----U U U U U U U U U U U U U U U ----! 2 4 40 FIGURE -1- COMPANION: NONE CONCURRENT: NONE DETAIL: IF THE DRIVE IS AS DESCRIBED IN THE "PHYSICAL CHECK" SECTION REPLACE THE 3.5" DISKETTE DRIVE WITH P/N6820821. NOTES: ORDER PARTS THROUGH NORMAL DISTRIBUTION. RECORD ALL TIME AN MATERIAL TO SERVICE CODE 33, ECA030 OTHER OFFICE WORKED 990. RETURN DISKETTE DRIVE AS PER NORMAL BRANCH OFFICE PROCEDURES. -------------------------------------------------------------------------