• Code: 827
• Description: Self-diagnostic error: Standard SDRAM DIMM [XXXX]: Detailed error code
• Causes: 0201] Verification error Error detected during a write/verify check for the standard RAM (SDRAM DIMM). • Loose connection • Defective SDRAM DIMM • Defective controller [0202] Resident memory error The SPD values in all RAM DIMM are incorrect or unreadable. • Defective RAM DIMM • Defective SPD ROM on RAM DIMM • Defective 12C bus 1. Replace the RAM DIMM
• Remedy:

• Code: 828
• Description: Self-diagnostic error: ROM [XXXX]: Detailed error code
• Causes: [0101] Check sum error 1 The boot monitor and OS program stored in the ROM DIMM is checked. If the check sum of the program is incorrect, this SC code is displayed.
• Remedy: Replace the controller board.

• Code: 835
• Description: Self-diagnostic error: Standard SDRAM DIMM [XXXX]: Detailed error code
• Causes: [1102] Loopback connector is connected but check results in an error. • IEEE1284 connector error • Centronic loopback connector defective 1. Replace the controller board. [110C] Loopback connector is connected but check results in an error. • ASIC device error • IEEE1284 connector error • Centronic loopback connector defective 1. Replace the controller board. [1120] Centronic loopback connector is not connected for detailed self-diagnostic test. • Centronic loopback connector not connected correctly • Centronic loopback connector defective • ASIC device defective 1. Replace the controller board.
• Remedy:

• Code: 838
• Description: Self-diagnostic Error: Clock Generator [XXXX]: Detailed error code [2701] A verify error occurred when setting data was read from the clock generator via the I2C bus.
• Causes: • Defective clock generator • Defective I2C bus • Defective I2C port on the CPU
• Remedy: Replace the controller board.

• Code: 839
• Description: USB NAND Flash ROM error [XXXX]: Detailed error code
• Causes: [9001] USB NAND Flash ROM cannot be read. • Defective controller board [9101] The ID of the USB NAND Flash ROM cannot be read. • Defective controller board [9110] The USB NAND Flash ROM controller is disconnected. • Defective controller board
• Remedy: Replace the controller board.

• Code: 840
• Description: EEPROM error 1: EEPROM access
  During the I/O processing, a reading error occurred. The 3rd reading failure causes this SC code. During the I/O processing, a writing error occurred.
• Causes: Defective EEPROM
• Remedy:

• Code: 841
• Description: EEPROM error 2: EEPROM read/write error
  Mirrored data of the EEPROM is different from the original data in EEPROM.
• Causes: Data in the EEPROM is overwritten for some reason.
• Remedy:

• Code: 842
• Description: Flash ROM verification error
  Verification error of the flash ROM on the controller board occurs. Note: - This SC is logged at 1st error detection.SC819 is issued at 2nd error detection. - SC819 is issued at 2nd error detection.
• Causes: Defective flash ROM (controller board)
• Remedy: