Code :

Code: E748-2010-00
Description: Flash PCB error / HDD error
Causes: IPL (startup program) was not found, or the HDD could not be recognized.
Remedy: [Related parts] R1.00 - Harness between the Main Controller PCB (UN81/J6003, J6004) and the HDD - HDD - Flash PCB (UN91) - Main Controller PCB (UN81) [Remedy] Perform the following in the order while checking whether the error is cleared. - Disconnect the cable between the Main Controller PCB and the HDD, and turn ON the main power. a. When the error code has not been changed: 1. Obtain the necessary backup data by referring to the backup data list. 2. Enter safe mode using (2+8) startup, and execute [4] Clear/Format> [2] Flash Format (Flash format) using a USB flash drive.. 3. After replacing the Flash PCB, reinstall the system software using SST or a USB flash drive. 4. Restore the backup data. b. When the error code has been changed to another one, see the remedy for the corresponding code. [Reference] For backup and restoration, refer to "Adjustment> Main Controller System" and "Appendix> Backup Data List" in the Service Manual.

Code: E748-2011-00
Description: Flash PCB error
Causes: OS was not found at startup.
Remedy: After replacing the Flash PCB, reinstall the system software using SST or a USB flash drive.

Code: E748-2012-00
Description: Flash PCB error
Causes: Cannot mount the OS in safe mode startup or No OS startup script
Remedy: After replacing the Flash PCB, reinstall the system software using SST or a USB flash drive.