ThinkPad NN-D491 Schematic
This page has the schematic for ThinkPad NN-D491, a laptop motherboard from Lenovo.
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All Lenovo filesSchematicLcfc NM-E231 Y550 Adl-PLenovo · NM-E231BoardviewSchematicLcfc NM-C741Lenovo · NM-C741SchematicLcfc NM-C741 Ver 1.0Lenovo · NM-C741BoardviewLenovo NM-D491 REV1.0Lenovo · NM-D491BoardviewLenovo NM-D491 REV0.4Lenovo · NM-D491BoardviewLENOVO Legion5 15IMH05 NM C911 REV 1.0Lenovo · NM-C911BoardviewLENOVO Legion 5 15IMH05H NM C911 REV 0.2Lenovo · NM-C911BoardviewLenovo Legion 5 15IMH05H NM C921 Rev 0.4 BOARDVIELenovo · NM-C921
Questions about this file
How do I use the schematic for diagnosis?
Start with the power-sequence and power-rail pages to find where a no-power or no-image fault begins, then locate the parts with a boardview. No-power troubleshooting plan.
Is the download free?
Yes. The button opens post #13590 in the public Telegram channel @schematicslaptop, where the file can be downloaded with a free Telegram account.