MBF COMPANY CONFIDENTIAL FIELD INFORMATION BULLETIN

SERVICE GROUP(S): MICRO,MINI,LARGE     MFG: MAI BASIC FOUR

 NACS  TYPE(S): N061                   MFG. MODEL(S): DISK DRIVES

CATEGORY: PREVENTIVE MAINT.            DESC: PM GUIDELINES

                   *** TABLE OF CONTENTS AS OF 12/20/90 ***
FIB 00001.FIX MEDIA DRIVES............................................07/21/89
FIB 00002.T80/T303 GUIDELINES.........................................07/21/89


PREVENTIVE MAINT.-MAI BASIC FOUR-DISK DRIVES--------Table Of Contents Pg01 of 01
FIB 00001                                                             07/21/89

                            *** FIX MEDIA DRIVES ***                         

                        FREQUENCY: EVERY SIX MONTHS


        ITEM:                           RECOMMENDED ACTION
|----------------------|        |---------------------------------------|

        VOLTAGES:               Check and adjust power supplies as
                                required.


        CABLES:                 check for fraying,broken connectors,
                                tightness of fit.


        MISC.                   check and clean any timing discs ,optical    
                                sensors

        OPERATION:              Check Errorlogs
                                run disk tests


ORIGINATOR: j whalen


PREVENTIVE MAINT.-MAI BASIC FOUR-DISK DRIVES--------FIB001 Pg001


FIB 00002                                                             07/21/89

                          *** T80/T303 GUIDELINES ***

                        FREQUENCY: EVERY TWO MONTHS

        ITEM:                           RECOMMENDED ACTION
|----------------------|        |----------------------------------|         

       BASE:                     Inspect and clean base and coarse
                                 filters,
                             **                                              
                                Replace absolute filter every 6 months.      

                                Inspect belts, and carriage & way assy.

     VOLTAGES:                  check and adjust as necessary.


     ALIGNMENT:                 Check head alignment.

     OPERATION:                 Check Errorlog and System logs for
                                repeat problems.
                                Run disk diagnostics.


ORIGINATOR: J WHALEN


PREVENTIVE MAINT.-MAI BASIC FOUR-DISK DRIVES--------FIB002 Pg001