[Gumstix-users] Audiostix2 and GPSstix boards of revision -R1286 Product Alert

[Gordon K. <go...@gu...>]

Several  Audiostix 2 and GPSstix boards of revision -R1286 (approximately 25 of each) slipped through testing and are non-functional and need to be repaired or replaced.

Customers should contact sa...@gu... to arrange an RMA under warranty coverage.  The products at issue are identified by the product name on the board (Audiostix II PCB00012-R1286) and by 2 blue resistors.  An drawing showing the location of these 2 resistors is at:
http://pubs.gumstix.com/boards/AUDIOSTIX/PCB00012-R1286/PCB00012.rework.png

Those wish to do so may may field-correct this problem themselves by removing the two resistors from the boards.

I sincerely regret the difficulties this has caused and I am examining our quality process to prevent a recurrence.

Gordon


Background:
The power supply design was changed to allow an alternative version of the MIC5219 (the MIC5219ADJ instead of the MIC5219-3.3)  that requires 2 resistors("R7" and "R8") to set the output voltage.

A small number of boards were manufactured with the MIC5219-3.3, R7 and R8 all populated.
To correct this R7 and R8 need to be removed.

Schematics and layout are posted at:
http://pubs.gumstix.com/boards/AUDIOSTIX/PCB00012-R1286