#9761 HIGH 1.5-har: XO 1.5 B2 not booting even after EC reset

[Zarro Boogs per Child]

#9761: XO 1.5 B2 not booting even after EC reset
--------------------------------+-------------------------------------------
           Reporter:  TMarques  |       Owner:  wad           
               Type:  defect    |      Status:  closed        
           Priority:  high      |   Milestone:  1.5-hardware-C
          Component:  hardware  |     Version:  1.5-B2        
         Resolution:  fixed     |    Keywords:                
        Next_action:  diagnose  |    Verified:  1             
Deployment_affected:            |   Blockedby:                
           Blocking:            |  
--------------------------------+-------------------------------------------
Changes (by wad):

  * status:  assigned => closed
  * resolution:  => fixed


Comment:

 The main problem was that the circuitry which generated the signal
 indicating that the +1.05V supply for the processor front side bus wasn't
 operating properly at cold temperatures.   It was changed to use a MOSFET
 instead of a bipolar transistor starting with C2 builds (all ramp and
 production), and this problem no longer occurs.

-- 
Ticket URL: <http://dev.laptop.org/ticket/9761#comment:21>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system