Asus X555LD

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Disabling onboard RAM for Asus X555LD board

Problem

Solution

Asus X555LD onboard RAM disable

This guide is valid for Asus X555LD board. This board has various revisions and was used in several Asus models. I used X555LD Rev: 3.3 boardview for this guide. We need this mod when suspect about onboard RAM chips. All onboard RAM chips must be removed. If client requires the onboard RAM, replace the RAM chips and shift back the resistors. Search in Nets box for "PCBID" string. This will list all RAM configuration lines, PCBID1-4. See Fig.1. There are four (4) resistor pairs which need to change position. Locate PCBID1 and corresponding resistors. Change position for R2141/42. See Fig. 2. Locate PCBID2 and corresponding resistors. Change position for R2133/34. See Fig. 3. Locate PCBID3 and corresponding resistors. Change position for R2135/36. See Fig. 4. Locate PCBID4 and corresponding resistors. Change position for R2137/38. See Fig. 5.