MX-2610N, MX-3110N, MX-3610N (serv.man224). PRECAUTIONS AND VERIFICATIONS WHEN PERFORMING CONTROL LEVEL ADJUSTMENTS FOR THE STANDARD TONER CONCENTRATION AVOIDING EE-EL, F2-64, F2-67, F2-40 AND F2-43 ERROR CODES - Sharp Copying Equipment Technical Bulletin (repair manual). Page 2

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[Example 2] 
After performing control level adjustments for the standard toner concentration, insertion of 
the toner cartridge did not make the machine ready, therefore, the following operations were 
performed. As a result, F2-64 to 67 errors or F2-40 to 43 errors are displayed. 
While the message, "Refilling toner, please wait." is displayed on the LCD, do not perform 
the following 3 operations. The duration of the "Refilling toner, please wait." message is 30 
seconds to 6 minutes. 
 
Operation 
1). Turning the power OFF and then ON. 
2). Opening and closing the front cabin, right door, etc. 
3). Performing a simulation. 
 
(Cause) 
A function to detect the amount of toner that is dripped from the MX-2310U has been added. 
After performing control level adjustments for the standard toner concentration and when 
inserting a toner cartridge for the first time, the function detects the amount of toner dripped 
and whether or not toner is being dripped from the toner cartridge. 
When the "Refilling toner, please wait." message is displayed on the LCD, the machine is in 
toner drip volume detection mode. 
In this status, if the above operations (Power OFF/ON) are performed, the toner drip volume 
detection mode will be reset and have to be run again. As a result, over toner error may 
occur causing F2-64 to 67 or F2-40 to 43 errors to be displayed. 
While the message, "Refilling toner, please wait." is displayed, do not perform the above 
three operations until the machine is in ready status. 
 
 
 
 
Sharp Electronics (UK) Ltd., Technical Services Group
CCE-827 
 
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