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buzzingoutevo3socket

EVO 1-3 Socket Checkpoints

With a EVO 1-3 ECU, when removing the EPROM it's entirely possible to damage a track on the top of the board and still allow the engine to run, but cause a number of malfunctions.

If the engine runs, it indicates that the connections between the processor (IC1) and the EPROM are okay.

Details

Check for continuity of the tracks to the EPROM as follows:

EPROM IC2 IC1 Notes
01 61 38 J1 installed, J2 removed
02 64 35
03 2 46
04 3 45
05 4 44
06 5 43
07 6 42
08 7 41
09 8 40
10 9 39
11 13 11
12 14 12
13 15 13
14 GND
15 16 14
16 17 15
17 19 16
18 20 17
19 21 18
20 GND
21 66 33
22 22
23 65 34
24 67 32
25 68 31
26 63 36
27 62 37
28 +5V

Pin numbers for IC1 and IC2 are printed on the PC board. The EPROM pins are numbered as follows:

buzzingoutevo3socket.txt · Last modified: 2009/11/13 15:20 by dmertz