• Code: SC 833
• 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: SC 835
• 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: SC 836
• 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: SC 837
• 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.

• Code: SC 850
• Description: Network interface error The network is unusable.
• Causes: • Defective controller
• Remedy: 1. Turn the main switch off and on. 2. Replace the controller.

• Code: SC 851
• Description: IEEE1394 interface error The 1394 interface is unusable.
• Causes: • Defective IEEE1394 • Defective controller.
• Remedy: 1. Turn the main switch off and on. 2. Replace the IEEE1394 interface board. 3. Replace the controller.

• Code: SC 853
• Description: Wireless LAN card not detected The wireless LAN card is not detected before communication is established, though the wireless LAN board is detected.
• Causes: • Loose connection
• Remedy: 1. Check the connection.

• Code: SC 854
• Description: Wireless LAN card not detected The wireless LAN card is not detected after communication is established, though the wireless LAN board is detected.
• Causes: • Loose connection
• Remedy: 1. Check the connection.