Please I Need Schematic diagram for HP EliteBook 840 G4

[JERALD_25]

Please I Need Schematic diagram for HP EliteBook 840 G4 I Think My IC Audio Is the problem so i badly need Schematic diagram I can't see anything in the internet of schematic diagram of my laptop so i can repair so please help me thank you 

[Paul_Tikkanen]

HP does not provide any schematic diagrams for any of their PC's.

The only resource available is the maintenance and service guide.

HP EliteBook 840 G4 Notebook PCHP EliteBook 848 G4 Notebook PC Maintenance and Service Guide

If the audio chip is bad, then a motherboard replacement would be required.

That's what HP would do. 

They don't repair circuitry on the motherboard.