AR-PB2 (serv.man35). ARPB2-008 Fixing F9 00 error messages - Sharp Copying Equipment Technical Bulletin (repair manual). Page 2

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Sharp Electronics (UK) Ltd., NIS Systems Support 
 
NIS Bulletin PB2 008.doc 
 
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Condition 3: 
 
When updating the ARPB2 firmware from 1.45 directly to 3.22 
 
The first data address in a v1.45 Flash ROM is different to the first data 
address in a v3.22 Flash ROM.  Due to this difference, when upgrading 
between these versions, an F9:00 occurs.   
 
Fix: 
You can overcome this problem by: 
a)  upgrading directly from v1.45 to v4.37(AR-PB2A), 
b)  upgrading from v2.21 or v2.32 to v3.22. 
 
If you have already upgraded a Flash ROM from v1.45 to v3.22, and it is 
exhibiting F9:00 errors you should replace the Flash ROM and upgrade the 
replacement directly to v4.37. 
 
 
Condition 4
If the PB2 Flash ROM is faulty. 
 
Fix: 
Replace the ARPB2 Flash ROM.   
 
 
 
Condition 5: 
If additional Installed RAM is faulty. 
 
Fix: 
Replace the RAM and check whether F9:00 errors still occur.   
 
 
 
Condition 6: 
If the Copier Engine Firmware is not at the latest level. 
 
Fix: 
Check the Sharp Technical Website, and confirm that that the Engine 
firmware is at the latest level. 
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