• Code: SC824
• Description: [1401] Self-diagnosis error: Standard NVRAM The controller cannot recognize the standard NVRAM installed or detects that the NVRAM is defective.
• Causes: • Loose connection • Defective standard NVRAM • Defective controller
• Remedy: 1. Turn the main switch off and on. 2. Check the standard NVRAM is firmly inserted into the socket. 3. Replace the NVRAM. 4. Replace the controller.

• Code: SC827
• Description: Self-diagnostic error: Standard SRAM DIMM [XXXX]: Detailed error code [0201] Verification error Error detected during a write/verify check for the standard RAM (SRAM DIMM).
• Causes: • Loose connection • Defective SRAM DIMM • Defective controller
• Remedy: 1. Turn the main switch off and on. 2. Replace the SRAM DIMM. 3. Replace the controller.

• Code: SC828
• Description: Self-diagnostic error : ROM [XXXX]: Detailed error code [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. [0104] Check sum error 2 All areas of the ROM DIMM are checked. If the check sum of all programs stored in the ROM DIMM is incorrect, this SC code is displayed. [0105] ROM error The ROM DIMM is not of the recognized type.
• Causes: • Defective ROM DIMM • Defective controller
• Remedy: 1. Turn the main switch on and off. 2. Replace the ROM DIMM 3. Replace the controller.

• Code: SC829
• Description: Self-diagnosis error: optional RAM [XXXX]: Detailed error code [0302] Composition error (Slot 0) The result of checking the composition data of the RAM in Slot 0 (CN5) on the controller is incorrect. [0401] Verification error (Slot 1) The data stored in the RAM in Slot 1 does not match the data when reading. [0402] Composition error (Slot 1) The result of checking the composition data of the RAM in Slot 1 (CN6) on the controller is incorrect.
• Causes: • Not specified RAM DIMM installed • Defective RAM DIMM
• Remedy: 1. Turn the main switch off and on. 2. Replace the RAM DIMM. 3. Replace the controller board.

• Code: SC833
• Description: [0F21] Self-diagnostic error: I/F error The controller detects that the BCU is not properly connected.
• Causes: • Loose connection • Defective controller • Defective BCU
• Remedy: 1. Turn the main switch off and on. 2. Check the connection between the BCU and controller. 3. Replace the controller. 4. Replace the BCU.

• Code: SC835
• Description: Self-diagnosis error: Centronics interface [XXXX]: Detailed error code [1102] Verification error The controller detects that the loop-back connector is not properly connected. [110C] DMA verification error A DMA data abnormality is detected even when the loopback connector is properly set. [1120] Loop-back connector error The loop-back connector is not set when starting the detailed self-diagnostics.
• Causes: • Loose connection • Defective loop-back connector • Defective Centronics connector • Defective controller
• Remedy: 1. Turn the main switch off and on. 2. Check the connection between the Centronics connector and loop-back connector. 3. Reconnect the loop-back connector. 4. Replace the controller.

• Code: SC836
• Description: [1601] Self-diagnosis error: Font ROM (standard) The data in the font ROM (standard ROM-DIMM) is damaged. .
• Causes: • Defective standard ROM-DIMM
• Remedy: 1. Turn the main switch off and on. 2. Replace the standard ROM-DIMM.

• Code: SC837
• Description: [1602] Self-diagnosis error: Font ROM (option) The data in the font ROM (optional ROM-DIMM) is damaged.
• Causes: • Defective optional ROM-DIMM
• Remedy: 1. Turn the main switch off and on. 2. Replace the optional ROM-DIMM.