MX-4100N, MX-4101N, MX-5000N, MX-5001N (serv.man63). IMPORTANT Handling of EEPROM's. - Sharp Copying Equipment Technical Bulletin (repair manual). Page 5

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Sharp Electronics (UK) Ltd., Document Systems Support
 
 
5/5 
[5] Cautions for prevention of EEPROM breakage   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[Important] 
 
SIM16 is the simulation to clear the trouble when U2 trouble occurs even though any service (repair or maintenance etc.) has not been 
performed. 
 
As described above, this SIM cannot clear U2 trouble caused by the human error.    EEPROM will be rather broken 
 
if this SIM is executed. 
 
 
Counter data and the adjustment values of the machine are also logged in EEPROM. 
 
EEPROM with data garbled cannot be repaired even at Nara factory and the initialization is only the option. 
 
Once EEPROM is initialized, the counter data is reset to "0", which will complicate the management of account billing data based on counters. 
In some cases it may cause dealers a loss.(e.g.: Even though 3,000 pages have run, it is not possible to charge the end user for the counter as 
there is no counter data.) 
 
 
Since all data including the adjustment values are reset to the default, all adjustment items need to be readjusted, "Which requires long hours 
of work"
 
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