                    ENGINEERING CHANGE NOTICE

ECN Number:_____________5____________________

Product:_Decision 1 Switching Power Supply___

Part Number(s):_______SWPS-UN________________

Current Board Revision Number:____PC-5672B___

New Board Revision Number:________PC-5672C___


Purposĺ  oć Change:__Decrease the maximum current through fuse 

F4 during power up.  This current is excessive due to charge___

current through L3, C20 and C21 when power is first applied.___

Modifications (attach additional sheets if needed):  __________

1) Remove fuse F4 from bottom PC board and replace with a 1 3/4",

   18G., black insulated, stranded wire (#160 -008-00) as shown

   in figure 2. _______________________________________________

_______________________________________________________________

APPROVED:      Engineering:______________________Date__/__/__

               Production:_______________________Date__/__/__

               Quality Assurance_________________Date__/__/__

               Customer Service__________________Date__/__/__

               Purchasing________________________Date__/__/__

               Marketing_________________________Date__/__/__

EFFECTIVITY:   [X]  Immediate - notify current production

               [ ]  Notify users and update stock

               [ ]  Phase in as stock is depleted


Submitted by:__Bob Groppo_________________________on 10/17/83 
 
Page_1_of_6_                                 DRAWINGS? _YES__



Form ECN Rev-2 9/83Š
                           ENGINEERING CHANGE NOTICE

ECÎ  Number:_______5_________ß                               Dateş 10/17/83_
     
PRODUCTş  ____SWPS-UN___________ß                            Pageş _2ß oć _6_




MODIFICATIONSş            2® Removĺ  jumpeň  oî bottoí boarä  aó Ť
(cont.)                      shown in figure 3.
     
                          3® Benä fusĺ (#225-0036-00¬ soldeň taiě Ť
                             8A¬ 250V) as shown in figure 1.

                          4® Instalě  fusĺ iî locatioî oć  jumpeň Ť
                             removeä iî steđ ˛ aó showî iî  figurĺ Ť
                             4® NOTEş bĺ surĺ leadó oć fusĺ dď noô Ť
                             contacô  oň  comĺ  closĺ  tď   eitheňŤ
                             C4± oň R24® 


                          5. Mark board with PC-5672C designation
                             where previously marked PC-5672B.
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