• Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

It is currently 14 December 2024, 02:43

Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
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 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

#1 Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

by DangeR • 4 March 2024, 10:53
Hi,
Can anyone help me with MEC1653 JTAG please? I already read here on forum:

1.TMS
2.TDI
3.TDO
4.TCK
5.GND
6.RST

"To enable JTAG Port, you need to remove the 10kΩ resistor R7010 from the board, and insert a 100kΩ resistor in place of R7009, and you should also pull up to n.6 using a 10kΩ resistor."

But can anyone help me to identify the R7010 and R7009 or to mark them in attached image?
Thank you!

Image

Re: Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

by Google Adsense [BOT] • 4 March 2024, 10:53

#2 Re: Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

by Vogelek23 • 4 March 2024, 11:49
Check if the resistor marked yellow is 10kΩ and its pin marked with red arrow is connected to ground. If YES, remove it and solder a 100kΩ resistor to the position marked green.
Image

#3 Re: Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

by DangeR • 4 March 2024, 16:22
Thank you for answer. I did exactly like in your picture and also pulled up 6.RST using a 10kΩ resistor but No response from MEC. I'm using SUCCESSOR.

#4 Re: Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

by matic • 5 March 2024, 20:53
Make sure the resistors R7701, R7702, R7703, R7704, R7705, R7706, R7707, R7708 are soldered to the board.

Re: Lenovo ThinkPad P1 Gen 1 20ME LPM-1 MB 17870-1 MEC1653 JTAG

by Google Adsense [BOT] • 5 March 2024, 20:53
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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