• 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 PWB and the operation PWB and between the main 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 PWB are well conducted and, if not, replace. 4. Execute U024 to initialize (FULL) the HDD. 5. Execute U021initialize 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
• Description: Main PWB checksum error
• Causes: 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
• 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.

• Code: F051
• Description: Scanner engine ROM checksum error
• Causes: Scanner software. ISC PWB
• Remedy: Scanner software Install the latest scanner software.
  ISC 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 ISC PWB.

• Code: F278
• Description: Power supply in drive system error
• Causes: The main power switch was turned off before the power switch is pressed. Shutdown due to a power failure
• Remedy: Turn the main power swtch off and after 5 seconds, then turn power on. (Before turning power off, verify that the power key has been pressed and the power indicator has gone off, then switch the main power switch.)