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04 October 2004, 22:25
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#1 |
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Registered User
Join Date: Aug 2004
Location: Vienna / Austria
Age: 44
Posts: 257
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A1200 Rev. 2b motherboard fix
Im using this instructions to hopefully fix the probs Im haveing with my spare A1200.
Im having problems doing the last step, namely Add a 470 Ohms Pull-up to pin 43 of Alice (U2). First, how do I have to locate Pin 43. and whats a Pull-Up? Also I have another A1200 which has the XR358 Spot filled with a Resistor, could that be the pull-up I have to add (since older Modells dont need this fix I figure this could be the difference) ? |
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05 October 2004, 09:04
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#2 |
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Join Date: Jul 2003
Location: Helsinki / Finland
Age: 43
Posts: 9,861
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- a pull up resistor is a resistor that connects a bit of circuit (in this case pin43 of u2) to +5v
- pin 1 is the one with the dimple, then you count anti-clockwise from that pin. 
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05 October 2004, 17:18
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#3 |
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Registered User
Join Date: Aug 2004
Location: Vienna / Austria
Age: 44
Posts: 257
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thanks alot
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