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SCHEMATIC Lenovo LCFC JS47R J557R NM-E791 REV1.0

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Lenovo LCFC JS47R J557R NM-E791 REV1.0
BoardView
NM-E791 REV1.0 tvw
NS-E791 REV1.0 tvw
NS-E792 REV1.0 tvw
 
About this board

This thread is for the Lenovo JS47R J557R with main board NM-E791.

Lenovo had this board built by LCFC; LCFC (Lenovo/Compal) board numbers start with NM-. Check the number printed on the PCB before you download. Board revision: 1.0. Match the revision as well as the board number.

Files usually needed for this board
  • BIOS (full SPI chip dump, .bin)
  • EC / KBC firmware, if the board uses a separate EC chip
  • Schematic (PDF)
  • Boardview (.brd / .bdv / .cad)

Common cases: dead board after an interrupted BIOS update, ME region errors, missing serial number or UUID after a board swap, or a password lock.

Back up the original dump first — it contains machine-specific data (serial, UUID, MAC, ME), and you will want it if anything goes wrong.

If you have a working file for this board, please share it below. More files: search NM-E791 in File Finder.

Attachments

NM-E791 REV1.0.tvw.zip
2 MB · Views: 12

NS-E792 REV1.0.tvw.zip
80.5 KB · Views: 8

NS-E791 REV1.0.tvw.zip
78.2 KB · Views: 8

KKCN19WW Bios.zip
4 MB · Views: 6

CPU SRESZ
NM-E791

The IO chip in this model notebook is burned out. I installed an IO chip that I removed from another Lenovo notebook with a faulty processor, and the short circuit was fixed, but it's not triggering. Can you help me?
 

Attachments

nm-e791 yedek.BIN
8 MB · Views: 7

CPU SRESZ
NM-E791

The IO chip in this model notebook is burned out. I installed an IO chip that I removed from another Lenovo notebook with a faulty processor, and the short circuit was fixed, but it's not triggering. Can you help me?
Try this mine tested
 

Attachments

KKCN19WW.zip
4 MB · Views: 9

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