Code :

Code: EC51 3301
Description: Sub chip connection error (support number : 4801)
Causes: When starting up the printer or returning from power saving mode, connecting to sub chip fails.
Remedy: 1 Reinstall the firmware. The problem is resolved Complete. The problem is not resolved Replace the MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

Code: EC51 3302
Description: Sub chip initialization error (support number : 4801)
Causes: When starting up the printer or returning from power saving mode, initialization of the sub chip fails.
Remedy: 1 Reinstall the firmware. The problem is resolved Complete. The problem is not resolved Replace the MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

Code: EC51 3303
Description: Sub chip firmware download error (support number : 4801)
Causes: When starting up the printer or returning from power saving mode, downloading sub chip firmware fails.
Remedy: 1 Reinstall the firmware. The problem is resolved Complete. The problem is not resolved Replace the MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

Code: EC51 3304
Description: Media updating failure error (support number : 4905)
Causes: Updating the printer media information fails.
Remedy: 1 Update the printer media information with Media Configuration Tool. The problem is resolved Complete. The problem is not resolved Go to 2. 2 Reinstall the firmware. The problem is resolved Complete. The problem is not resolved Replace the MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

Code: EC51 3306
Description: NAND file system initialization error (support number : 4905)
Causes: When starting up the printer or returning from power saving mode, initialization of NAND file system fails.
Remedy: 1 Reinstall the firmware. The problem is resolved Complete. The problem is not resolved Replace the MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

Code: EC51 3307
Description: Unformatted NAND file system error (support number : 4905)
Causes: When starting up the printer or returning from power saving mode, formatting of NAND file system fails.
Remedy: 1 Reinstall the firmware. The problem is resolved Complete. The problem is not resolved Replace the MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

Code: EC51 3308
Description: Check sum error at updating the firmware. (support number : 4905)
Causes: Check sum of the firmware sent at firmware updating does not match.
Remedy: 1 Reinstall the firmware. The problem is resolved Complete. The problem is not resolved Replace the MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)