• Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

It is currently 10 January 2025, 17:45

Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

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#1 Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

by AndyWilly • 11 January 2021, 17:37
Laptop Lenovo ThinPad T470
Płyta: NM-A931 rev 2.0

Szukam schematu podłączenia MEC1653 po interfejsie JTAG w celu jego zaprogramowania . Po podłączeniu pokazanym na zdjęciu programator SVOD3 nie wykrywa układu. Podłączam zasilanie do płyty głównej poprzez złącze zasilania nadal nie wykrywa, podawałem 3V 0,1A na pin6(JTAG) również nie wykrywa.

Schemat połączenia jaki użyłem:
(PIN)JTAG (PIN)SVOD3
1.TMS 1.TMS
2.TDI 5.TDI
3.TDO 2.TDO
4.TCK 6.CLK
5. GND 4.GDN
6.- .-

Image

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Re: Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

by Google Adsense [BOT] • 11 January 2021, 17:37

#2 Re: Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

by matic • 11 January 2021, 18:29
Hello!

First of all it is need to solder the missing components to "enable" the JTAG2 connector, because they are factory omitted to reduce the costs.
You have to solder 8 missing resistors and switch one resistor to another location.
The solder pads for missing resistors are covered with a solder mask, so you need to remove it from the pads that you will be able to solder the missing resistors. To do that it is best to use a "Fiberglass pencil" (following picture).
Image

Solder the missing components to the highlighted locations (picture below).
Red= Resistor 10kΩ/5%, package 0201
Yellow= Resistor 0Ω (Jumper), package 0201
Image

Plese, post a clear picture of the KBC chip area with a nearby surroundings that I can highlight the resistor, that needs to be switched to another location.

#3 Re: Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

by AndyWilly • 11 January 2021, 19:07
Image

#4 Re: Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

by matic • 11 January 2021, 20:15
Switch the highlighted resistor from red to yellow position (picture below):
Image

Re: Lenovo ThinPad T470 NM-A931 rev 2.0 Schemat podłączenia JTAG MEC1653 SVOD3

by Google Adsense [BOT] • 11 January 2021, 20:15
 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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