• Code: 733
• Description: Finisher lower tray lift motor error
  The stack height sensor did not activate within 15 sec. after the lower tray lift motor turned on.
• Causes: • Lower tray lift motor connector or harness loose, broken, defective • Lower tray lift motor defective or overloaded due to an obstruction • Upper stack height sensor connector or harness loose, broken, defective • Upper stack height sensor defective • Lower tray lower limit sensor connector or harness loose broken, defective • Lower tray lower limit sensor defectivec

• Code: 734
• Description: Finisher lower tray shift motor error
  The lower tray did not reach the home position within 1.25 sec. after the lower tray shift motor turned on.
• Causes: • Lower tray shift motor connector or harness loose, broken, defective • Lower tray shift motor defective or overloaded due to an obstruction • Lower tray shift sensor harness or connector loose, broken, defective • Lower tray shift sensor defective

• Code: 818
• Description: Watchdog error
  The bus is being held by another device, or a CPU-device infinite loop has occurred. A module that the watchdog is monitoring has not closed properly at the conclusion of its task, or the module cannot continue processing.
• Causes: • System program defective; switch off/on, or change the controller firmware if the problem cannot be solved • Controller board defective • Controller option malfunction

• Code: 819
• Description: Fatal kernel error
  Due to a control error, a RAM overflow occurred during system processing. One of the following messages was displayed on the operation panel.
• Causes: • System program defective • Controller board defective • Optional board defective • Replace controller firmware

• Code: 820
• Description: Self-Diagnostic Error: CPU
  The central processing unit returned an unexpected error during the self-diagnostic test.
• Causes: • Controller board defective • Firmware defective • Update firmware Note: This SC also logs one of 47 hex codes (0001 to 4005). However, the recovery procedure is the same in each case.

• Code: 821
• Description: Self-diagnostic error 2: ASIC
  The Write & Verify check of the ASIC returned an error. Note: The main ASIC module on the controller board controls the bus of the ROM device..
• Causes: • Replace the controller board

• Code: 822
• Description: Self-diagnostic error 3: HDD
• Causes: • HDD defective • HDD harness disconnected, defective • Controller board defective

• Code: 823
• Description: Self-diagnostic Error: NIC
  The network interface board returned an error during the self-diagnostic test.
• Causes: • Network interface board defective (replace the controller board) • Controller board defective