Lenovo ideapad 330S-14IKB, 330S-15IKB BIOS 330S_KBL_MB_V06 Schematics boardview

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330S-15IKB Laptop (ideapad)
330S-14IKB, 330S-15IKB
BIOS 7SCN20WW
330S_KBL_MB_V06 REV.MP
P/N 431204223050

330S-KBL Schematic Diagram_LO.pdf
330S-KBL Silkscreen_LO-boardview.pdf
Schematics 7000-14ikbr 330S-KBL Series.pdf


7000-14ikbr 330S-KBL Series.jpg Screen Shot 2020-04-03 at 3.24.16 PM.jpg
 

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Hi Friend i have Lenovo Ideapad 330s 14ikb. and he power on, the fan is spinning. i replace bios, and it's the same
I think it's the ram on board. how can i disconnect the "power" from ram on board 330S-14IKB KBL_MB_V06
 
ofer213 said:
Hi Friend i have Lenovo Ideapad 330s 14ikb. and he power on, the fan is spinning. i replace bios, and it's the same
I think it's the ram on board. how can i disconnect the "power" from ram on board 330S-14IKB KBL_MB_V06
Click to expand...
this is problem hardware you need check and repair
 
Hello. We have 2 MB´s. First one is the original, it´s dead. Customer replaced the MB with the very same model :
330s_arr_v06 rev mp. The "new" MB is working, but numerical KB doesn´ t. We tried the keyboard on external tester (svod). All characters work as it should. We checked the pinout from KB to Multicontroller. All good, MB is same. We tried to reflash BIOS and EC bios multiple times. It´s not working. All is good, MB´s are same model and revision. It´s just not working at all. (Laptop works normally).Can your provide some help? we are still measuring all other possibilities, but if you have some clue we´d be glad so we don´t waste more time with this. It´s unusual problem for us.

Thank you for your kind reply .
 
cumelsk said:
Hello. We have 2 MB´s. First one is the original, it´s dead. Customer replaced the MB with the very same model :
330s_arr_v06 rev mp. The "new" MB is working, but numerical KB doesn´ t. We tried the keyboard on external tester (svod). All characters work as it should. We checked the pinout from KB to Multicontroller. All good, MB is same. We tried to reflash BIOS and EC bios multiple times. It´s not working. All is good, MB´s are same model and revision. It´s just not working at all. (Laptop works normally).Can your provide some help? we are still measuring all other possibilities, but if you have some clue we´d be glad so we don´t waste more time with this. It´s unusual problem for us.

Thank you for your kind reply .
Click to expand...
This is the hardware on a new motherboard that does not support numeric keys.
 
so is it possible to remove it? It´s the very same motherboard even the model and revision is same. It´s not possible it has other hardware. We checked all the things. We even flashed BIOS and MUC with binary from 15" version (cut from manufacturer) But after that both DEL keys doesn´t work and the num KB doesn´t work. All other stuff works normally. We think it might be a BIOS problem afterall . All Windows sounds works normally. Everything works the same .
 
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