Support and General Use > Hardware
32MB Fuze V1, Checksum error
funman:
IIUC the JTAG pins are left to the battery wires (pic)
Now you just get to find which wire is which JTAG pin, some people did that on Clip+ / e200v2 / m200v4 / c200v2 but I don't know how.
sss:
If that is the case, I probably should have started with JTAG ;D
The pin order should be predictable right? Similar to the C200v2 pin order? I like how GND and VCC are at the ends, that's one way to be sure of the connector orientation, and two lines I can verify with an ordinary voltmeter.
By the way, I'd also like to know what that pushbutton to the right of the CPU does. Is that a reset button?
funman:
It's the "HOME" button ;D
You don't have the case anymore? ;)
sss:
I didn't look at it much after I took it off, I did reconnect it (big P.I.T.A. to get the control ribbon back in due to shortness of it and the lack of clearance) to try the enter button and a few other button combinations when trying to connect by USB after replacing the chip.
I thought the home button was actually part of the control assembly, but after turning that over and taking a look, I can see that it's just a hollow plastic peg :P It's the only button on the front like that!
sss:
Over the weekend I connected the fuze to my newly received parallel JTAG interface.
It was not easy. Not so much did it bother me about the size of the tiny pads; what did bother me was that I could not find a connector to attach to the supposed JTAG port on the fuze. I tried a microdrive ribbon and a ZIF drive connector without success, they were too flimsy and were not meant to be soldered to boards. I ended up using very thin wire (>32 gauge) and hand soldering each strand in place. With steady hands, a pointy Hakko tip, and frequent applications of flux it was doable.
You'll notice that I had (temporarily) removed the red power wire going to the battery as soldering things with the power still connected is clearly a bad idea.
I tried using H-JTAG as a e200v2 user had recommended but I did not have much success. Do any SansaAMS users out there know anything about what settings to use for a JTAG connection to this thing?
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