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A1200 LEDs schematics
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Topic: A1200 LEDs schematics (Read 6351 times)
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Zac67
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Join Date: Nov 2004
Posts: 2890
Re: A1200 LEDs schematics
«
on:
September 22, 2007, 10:01:47 PM »
You mean this?
It's not the PCB but apparently it just carries the LEDs.
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Zac67
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Join Date: Nov 2004
Posts: 2890
Re: A1200 LEDs schematics
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Reply #1 on:
September 28, 2007, 08:16:27 PM »
What do you neec Vcc for? The LEDs just sit between their signal and GND. Oh well, on second look, you might need resistors in series with the LEDs or they'll burn. Not sure though, depends on the transistor types.
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Zac67
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Join Date: Nov 2004
Posts: 2890
Re: A1200 LEDs schematics
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Reply #2 on:
September 28, 2007, 10:23:25 PM »
The 100 Ohms is a bypass for the transistor, so the LED will stay dim and won't go completely dark when _LED is high.
Dunno where the _CC_ENA is coming from. Can you find its origin?
PS: 1000th post! Woohoo! :banana:
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Zac67
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Join Date: Nov 2004
Posts: 2890
Re: A1200 LEDs schematics
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Reply #3 on:
September 29, 2007, 10:07:35 AM »
Cool! In C='s place I would've combined that signal with _IDE_LED, so the HDD LED would flash no matter what is accessed. Cheaper still. :-D
Could make an easy mod to get that though... :roll:
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Zac67
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Join Date: Nov 2004
Posts: 2890
Re: A1200 LEDs schematics
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Reply #4 on:
September 30, 2007, 09:54:27 AM »
Don't forget to adjust the Floppy LED's resistor - only one instead of two LEDs in line.
AFAIR the LEDs, you could even saw the LED in two halves, fill in the gap with some white plastic and with the trace reroute you'd have two independent lights.
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A1200 LEDs schematics
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