MX-3050N, MX-3060N, MX-3070N, MX-3550N, MX-3560N, MX-3570N, MX-4050N, MX-4060N, MX-4070N (serv.man2). Phoenix Handy Guide MX-XX60 MX-XX70 Updated Dec 16 Note Handy Guides are not a Substitute for the Service Manual - Sharp Copying Equipment Handy Guide. Page 68

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SCN-MFP PWB TROUBLESHOOTING 
SHARP  
 
68
 
If the machine cannot boot, check the LED status of the SCN-MFP PWB to confirm the error content and 
appropriate countermeasure. 
 
LED-R - Lighting-Up Status 
 
LED Status (Lit) 
Operation 
Countermeasure (for Error) 
●●●● 
Normal Status 
- 
○○○●--●○○○ 
Error 
SCN-MFP PWB trouble – Replace. 
 
 
LED-S - Lighting-Up Status 
 
LED Status (Lit) 
Operation 
Countermeasure (for Error) 
●●●● 
Normal Status 
- 
Other Status 
Error 
Replace mSATA PWB. 
If error persists, replace the SCN-MFP PWB. 
 
 
SCN-MFP PWB: 
 
 
    LED-S LED    
 
 
 
 LED-R LED 
 

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