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
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.