Electrical Components
M052/M053/M054 4-74 SM
When reinstalling a new NVRAM
Make sure that you have the SMC report (factory settings). This report comes with the machine.
1. Print the SMC data (”ALL”) using SP5-990-001.
2. Turn off the main switch.
3. Remove the VM card from SD card Slot 2 (Lower).
4. Insert a blank SD card into Slot 2 (Lower), and then turn on the main power switch.
5. Upload the NVRAM data to the blank SD card using SP5-824-001 (NVRAM Data Upload).
6. Turn off the main power switch, and then unplug the AC power cord.
7. Remove the SD Card containing the NVRAM data from Slot 2 (Lower).
8. Replace the NVRAM on the Controller Board with a new one.
9. Plug in the AC power cord, and then turn on the main power switch
When you do this, SC995-02 (Defective NVRAM) will be displayed. However, do
not turn off the main power switch. Continue this procedure.
10. Re-insert the SD card that you removed in Step 7 back into Slot 2 (Lower)
11. Download the old NVRAM data from the SD card onto the new NVRAMs using
SP5-825-001 (NVRAM Data Download).
This will take about 2 or 3 minutes.
12. Turn off the main power switch, and then remove the SD card from Slot 2 (Lower).
13. Insert the VM card into Slot 2 (Lower).
14. Turn on the main power switch.
15. Print the SMC data (”ALL”) using SP5-990-001, and make sure that it matches the SMC
data you printed out in Step 1 above (except for the value of the total counter).
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