buzzingout2gsocket
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buzzingout2gsocket [2008/01/23 09:47] 76.100.119.159 |
buzzingout2gsocket [2024/03/15 11:16] |
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| - | ====== Overview ====== | ||
| - | With a 2G 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. | ||
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| - | If the engine runs, it indicates that the connections between the processor (IC1) and the ERPOM are okay. | ||
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| - | ====== Details ====== | ||
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| - | Check for continuity of the tracks to the EPROM as follows (note that there is a 100 ohm series resistor between EPROM pin 22 and IC2 pin 44): | ||
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| - | ^ EPROM ^ IC2 ^ IC1 ^Notes ^ | ||
| - | | 01| 25| 63| | | ||
| - | | 02| 28| 60| | | ||
| - | | 03| 34| 55| | | ||
| - | | 04| 35| 54| | | ||
| - | | 05| 36| 53| | | ||
| - | | 06| 37| 52| | | ||
| - | | 07| 38| 51| | | ||
| - | | 08| 39| 50| | | ||
| - | | 09| 40| 49| | | ||
| - | | 10| 41| 48| | | ||
| - | | 11| 45| 11| | | ||
| - | | 12| 46| 12| | | ||
| - | | 13| 47| 13| | | ||
| - | | 14| | |GND| | ||
| - | | 15| 48| 14| | | ||
| - | | 16| 49| 15| | | ||
| - | | 17| 50| 16| | | ||
| - | | 18| 51| 17| | | ||
| - | | 19| 52| 18| | | ||
| - | | 20| | |GND| | ||
| - | | 21| 30| 58| | | ||
| - | | 22| 44| |100 ohms| | ||
| - | | 23| 29| 59| | | ||
| - | | 24| 31| 57| | | ||
| - | | 25| 32| 56| | | ||
| - | | 26| 27| 61| | | ||
| - | | 27| 26| 62| | | ||
| - | | 28| | |+5V| | ||
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| - | Pin numbers for IC1 and IC2 are printed on the PC board. The EPROM pins are numbered as follows: | ||
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| - | {{http://www.dsmlink.com/images/forums/m27c512.gif}} | ||
buzzingout2gsocket.txt ยท Last modified: 2024/03/15 11:16 (external edit)
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