4. Remove the SD slot cover [A] at the left rear side of the machine ( × 1).
5. Install the SD card into the SD card slot 2 (lower) [A] (for service use).
6. Turn on the main power switch.
7. Enter the SP mode.
8. Do SP5-846-051 (Backup All Addr Book).
9. Exit the SP mode, and then turn off the main power switch.
10. Remove the SD card form the SD card slot 2 (lower).
5. System Maintenance Reference
634