ENGINEERING STATUS

Thå  followinç  S-10°  problemó  havå beeî workeä  oî  sincå  thå �
meeting of 10/3/83:


POWER SUPPLY   -    1. No DC output
                       a) failure in the blocking oscillator 
                       b) blown zener diodes or transistors
                       c) blown caps or transformers

                    Therå havå beeî ² problemó resolveä witè  thå �
                    supplyº  Incorrectlù constructeä transformeró �
                    (T3©  anä toï mucè currenô applieä tï Q³ upoî �
                    poweò uð (measureä iî excesó oæ 3.µ  A)®   Aî �
                    ECÎ (4© haó beeî releaseä tï solvå botè theså �
                    problems.

                    Therå  wilì bå productioî problemó re-workinç �
                    thå  supplieó  witè thå  wronç  transformers®     



                    2. No +12 Volts
                       a) fuse blowing

                    I'í currentlù workinç oî thió onå anä havå nï �
                    soliä  clues®   É neeä tï looë aô thå  entirå �
                    computeò  wheî  thió  probleí  occurs®    Thå �
                    troublå no÷ ió alì É havå arå supplieó  whicè �
                    havå  blowî  1² Ö fuseó buô thió maù bå  onlù �
                    halæ oæ thå story®  



                    3. DJ/DMA Extended Adressing Mode
                       a) Artwork error

                    Althougè therå currentlù ió nï softwarå usinç �
                    thå  DJ/DMÁ iî anù banë otheò thaî 0¬  É havå �
                    releaseä aî ECÎ tï fiø aî artworë erroò whicè �
                    causeä  á reversaì iî extendeä addresó  lineó �
                    A1¶ anä A17®  Thió maù oò maù noô havå causeä �
                    problems with some OEMs.




                    10/10/83  -    BJG