XO 1.75 B1 ECOs: Difference between revisions
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(Created page with '{{OLPC}} These are recommended engineering change orders (ECOs) to the B1 prototype of the XO-1.75 laptop. This is NOT a list of changes from B1 to C1, that is [[…') |
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These are recommended engineering change orders (ECOs) to the [[XO_1.75_B1|B1 prototype]] of the XO-1.75 laptop. This is NOT a list of changes from B1 to C1, that is [[XO1.75_B1_C1_Changes|located elsewhere]]. |
These are recommended engineering change orders (ECOs) to the [[XO_1.75_B1|B1 prototype]] of the XO-1.75 laptop. This is NOT a list of changes from B1 to C1, that is [[XO1.75_B1_C1_Changes|located elsewhere]]. |
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==Fix MPPT== |
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This extends the range of input voltages which the MPPT algorithm can use. |
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* Change PR234 to 150K |
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* Change PR235 to 220K |
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This was done to most B1 units, with the exception of twenty-six or so. wad has the serial numbers of laptops missing this ECO. |
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[[Category:Hardware]] |
[[Category:Hardware]] |
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Revision as of 08:39, 17 July 2011
This page is monitored by the OLPC team.
These are recommended engineering change orders (ECOs) to the B1 prototype of the XO-1.75 laptop. This is NOT a list of changes from B1 to C1, that is located elsewhere.
Fix MPPT
This extends the range of input voltages which the MPPT algorithm can use.
- Change PR234 to 150K
- Change PR235 to 220K
This was done to most B1 units, with the exception of twenty-six or so. wad has the serial numbers of laptops missing this ECO.