Description: Communication error between Main/Engine PWB and Operation PWB
Causes: Main/Engine PWB. Operation PWB.
Remedy: Main/Engine 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/engine PWB and the operation PWB are normal. Main/engine PWB (YC2010) and operation PWB (YC1) 3. Check that the DIMM memories in the main/engine PWB are well conducted and, if not, replace. 4. Execute U021initialize memory. 5. Replace the main/engine PWB. Operation PWB Replace the operation PWB.
Code: F020
Description: Main/Engine PWB RAM check sum error
Causes: Main memory (RAM)
Remedy: Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main/engine PWB.
Code: F040
Description: Communication error between Main/Engine PWB and Print engine
Causes: Main/Engine PWB
Remedy: 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. Repair or replace the wire from the main/ engine PWB, that may be grounded. (Check short-circuit between 5V and 3.3V.) 3. Check the main/engine software and upgrade to the latest, if necessary. 4. If not corrected, replace the main/engine PWB.
Code: F050
Description: Print engine ROM checksum error
Causes: Main/Engine PWB
Remedy: 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. Check the main/engine software and upgrade to the latest, if necessary. 4. If not corrected, Replace the main/ engine PWB.