Read Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man110) Technical Bulletin online
Sharp Electronics (UK) Ltd., Document Systems Support
2/5
■■■ Cautions for Replacement of EEPROM ■■■
[1] The case which requires EEPROM replacement
(1) The cases which require usage of EEPROM (service parts)
- EEPROM was damaged while mounting or detaching.
- Inside EEPROM was damaged by for example, static charge generated while handling.
- EEPROM data were garbled (after inserting the EEPROM facing the opposite direction).
* EEPROM must be initialized and Serial No. must be written into EEPROM at Document
Systems Unit (in Nara factory). It is not allowed to use as it is without these procedures.
(2) The case which requires usage of EEPROM on PWB attached to the device
- Any cases other than (1) above
- Replacement of PWB is required.
[2] Prohibitions for replacement of EEPROM
* EEPROM data will be garbled and “U2” trouble may result by performing any of followings.
(1) Mounting EEPROM to different model
(2) Mounting EEPROM on different PWB for same model
(3) Replacing only MFP control PWB or PCU PWB from same PWB for same model
(4) Mounting EEPROM facing the opposite of specified direction
(5) Mounting new EEPROM (without writing serial number and initializing EEPROM)
[3] About EEPROM supplied as service parts
■ EEPROM mounted on each PWB
■ EEPROM (Single item)
* It is not allowed to use as it is because it is not initialized.
EEPROM cannot be initialized in field for security reasons.
EEPROM must be initialized. Model name and serial number must be written into EEPROM for
MFP control PWB and PCU PWB.
(Please request above procedure via e-Quality to handle at Document Systems Unit
(in Nara factory)
Click on the first or last page to see other MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man110) service manuals if exist.