• Code: 9000
• Description: Document processor communication error
  A communication error from document processor is detected 10 times in succession.
• Causes: DP main PWB.
• Remedy: 1. Check that the versions of the main unit firmware and the DP firmware are identical. 2. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. DP main PWB(YC1) and main/engine PWB (YC18) 3. If the wiring is disconnected, shorted or grounded, replace the wiring. 4. Replace the DP main PWB

• Code: 9060
• Description: DP EEPROM error
  Mismatch of reading data from two locations occurs 3 times successively. Mismatch between writing data and reading data occurs 3 times successively.
• Causes: DP main PWB. Device damage of EEPROM.
• Remedy: 1. Execute U906 Separating Operation Release. 2. Confirm that the EEPROM has been properly installed. 3. Replace the DP main PWB
  Device damage of EEPROM Contact the Service Support.

• Code: F000
• 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.