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U3 6pin chip orientation
Posted: Thu Dec 22, 2011 9:31 am
by lukej
Hi I need a bit of help with the orienation of U3, theres no notch on the chip to correspond with the notch on the board,
MS2
V3.0PCB
any body got any advice?
much appreciated
Re: U3 6pin chip orientation
Posted: Thu Dec 22, 2011 9:35 am
by jsmcortina
Is there a dot? That indicates pin 1.
Also if you look at the chip with the writing the correct way up, pin 1 should be bottom left.
James
Re: U3 6pin chip orientation
Posted: Thu Dec 22, 2011 9:40 am
by lukej
ok so the dot goes the same end as the notch or the dot goes the opposite end?
got another major issue....
let me sort U3 out first though!!!
Re: U3 6pin chip orientation
Posted: Thu Dec 22, 2011 9:46 am
by lukej
jsmcortina wrote:Is there a dot? That indicates pin 1.
Also if you look at the chip with the writing the correct way up, pin 1 should be bottom left.
James
thankyou James, ive found clarification on the pcb layout
http://www.msextra.com/doc/ms2extra/MS2 ... htm#layout
onto other issues... ive gone and soldered U4 where U7 should go
taking it real slow steady with the heat trying to use the solder sucker on it
Re: U3 6pin chip orientation
Posted: Thu Dec 22, 2011 3:03 pm
by kjones6039
Another good reason to install sockets, IMHO.
Re: U3 6pin chip orientation
Posted: Fri Dec 23, 2011 8:32 am
by lukej
yeah maybe... hindsight and all that