• 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.