• Code: 9940
• Description: Confidential document guard uninstalled error
  The confidential document guard PWB is removed while the confidential document guard PWB is valid.
• Causes: Confidential document guard PWB.
• Remedy: 1. Check that the confidential document guard PWB is firmly installed and, if not, install firmly. 2. Replace the confidential document guard PW.

• Code: 9950
• Description: ISC PWB error C
  FPGA configuration error CPU version information error This is caused when the PWB of a double-side scanning DP is connected, the confidential guard PWB is inserted, and the harness is not correctly connected
• Causes: Confidential document guard PWB.
• Remedy: 1. Replace the confidential document guard PW. 2. Replace the main PWB.

• Code: F000
• Description: Communication error between main PWB and operation PWB
• Causes: Main PWB. Operation PWB
• Remedy: Main PWB 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. Check that the wirings and connetors between the main circuit PWB and the operation circuit PWB and between the main circuit PWB and the HDD are normal. Main PWB (YC12,YC17,YC30) and Operation PWB (YC1,YC2,YC3) 3. Check that the DDR memories in the main circuit PWB are well conducted and, if not, replace. 4. Execute U024 to initialize (FULL) the HDD. 5. Execute U021 to initialize memory. 6. Replace the Main PWB. 7. Copy the log File saved in the HDD by U964 in USB memory and contact the service support.
  Operation PWB Replace the operation PWB.

• Code: F010 ... F013
• Description: Main PWB checksum error
• Causes: Defective main PWB.
• Remedy: 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. If not corrected, replace the main PWB.

• Code: F020
• Description: System memory error
  Controller detection error
• Causes: Defective main PWB.
• Remedy: 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. If not corrected, replace the main PWB.

• Code: F040
• Description: Communication error between Main PWB and Print engine
• Causes: Main PWB. Engine PWB. HDD Replace
• Remedy: Main PWB 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. Repair or replace the wire from the engine PWB, that may be grounded. (Check short-circuit between 5V and 3.3V.) 3. Check that the FCC wire connecting between the main PWB (YC3) and the engine PWB (YC46) is normal and, if necessary, re-insert.Or, replace the FCC wire. 4. If not corrected, replace the main PWB.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.
  HDD Replace the HDD.

• Code: F041
• Description: Communication error between Main PWB and Scanner engine
• Causes: Main PWB. ISC PWB.
• Remedy: Main PWB 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. Check that the wires between the main PWB and the ISC PWB are normal. 3. If not corrected, replace the main PWB.
  ISC PWB Replace the ISC PWB.

• Code: F050
• Description: Print engine ROM checksum error
• Causes: Engine software. Engine PWB.
• Remedy: Engine software Install the latest engine software.
  Engine PWB 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. Confirm that the EEPROM has been properly installed. 3. If not corrected, Replace the engine PWB.