MX-M264N, MX-M264NR, MX-M264NV, MX-M264U, MX-M314N, MX-M314NR, MX-M314NV, MX-M314U, MX-M354N, MX-M354NR, MX-M354U (serv.man99). Error codes omitted from Service Manual. - Sharp Copying Equipment Technical Bulletin (repair manual). Page 2

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Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
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4. Error code description 
A0-16 
Trouble content 
ARM9 (Energy Save NIC Controller) ROM abnormality 
Detail ICU 
Cause 
SD card trouble. 
Check and remedy  Attempt the update after start-up 
U2-23 
Trouble content 
Individual data check sum error of SRAM memory (ICU) 
Detail ICU 
Cause SRAM 
trouble 
Runaway of the control circuit due to the noise 
ICU PWB SRAM access circuit trouble 
Check and remedy  Auto initialize the data relating to the content that check sum error 
occurs by the power-OFF/ON. 
The registered information is eliminated so re-register the eliminated 
information. 
Clear the U2 trouble by SIM16. 
Replace the ICU PWB. 
 
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