Installation manual

TECHNICAL TIP TT-20422
2 OF 4
Troubleshooting:
1. Try to reset the U2-30 error by executing Simulation 16.
2. The electronic serial number data stored on an EEPROM located on the MFP control PWB (ICU) and
the electronic serial number data stored on an EEPROM located on the PCU PWB (PCU) must match
the actual serial number tag on the left side of the machine. Both electronic serial numbers MUST
match the Serial tag! No exceptions!
3. On the above models, it is no longer possible to view the serial number data in special simulations.
Go to simulation 22-05 and confirm if the serial number is shown on the screen. This serial number
is reported by the PCU PWB EEPROM. If the electronic PCU serial number matches the serial tag,
then most likely there is an issue with the MFP control PWB EEPROM. There is no method available
to view the electronic MFP control PWB EEPROM serial number on the above models.
4. Serial Numbers may not match for the following reasons:
 MFP Control or PCU PWBs have been swapped with other machines. Whenever the MFP or PCU
PWB are removed or replaced, the EEPROMs must be removed and installed onto the
replacement PWB. No exceptions!
 Damage. Great care must be given not to damage the 8 legs on the EEPROMs during removal or
installation. It is recommended to use an EEPROM removal tool.
 EEPROMs installed in wrong PWB. It is critical that the PCU EEPROM is never
installed on the
MFP PWB or vice versa. The data on the EEPROMs could be permanently damaged. Before
removing the EEPROMs, please label or mark the EEPROMs in some manner to ensure you
install them on the correct replacement PWB.
 EEPROMs installed backwards. There is an indentation or dimple at one end of the EEPROM
indicating its correct orientation. There is a white outline drawn around the EEPROM on the PWB
with a notch at one end indicating which way the dimple should go. Please note which direction
the dimple faces before removing the EEPROM. The data on the EEPROMs could be permanently
damaged.
 Voltage surge. Power surges could also damage the EEPROMs.
5. If you are able to resolve a serial number mismatch, try to reset with Simulation 16 again.
6. Confirm that no EEPROM legs are broken or partially seated.
7. Confirm EEPROMs are on the correct PWB (If Possible)
8. Try running Simulation 16 one last time to reset.
If all efforts to correct U2-30 error fail, the EEPROMs will have to be sent to the factory to reprogram the
serial number information. This involves a minimum 2 week turnaround time. It is vital that the following
directions be followed TO THE LETTER
, or additional delays will occur.
Step 1) Call the hotline and set up a case number (this is needed for tracking purposes). The hotline will
also attempt to help you correct the serial number conflict if possible to avoid delays in getting the
customers down machine up and running. They will also go over necessary information, such as packaging
instructions, documentation, and components that must be sent in to Sharp. Please cooperate with the
hotline personnel. They are there to help you.
Step 2) Documentation: To avoid delays, the following documentation is required by the factory in order to
restore serial number information. There are no exceptions.
 A photo of the serial number tag on the frame of the MFP
 A copy of the invoice from Sharp when the machine was purchased. If you did not purchase the
MFP directly from Sharp, please contact the Dealer that did.
 Please include a note that clearly shows the case number you received in Step 1.