Question about Ricoh Aficio 1515MF All-In-One Laser Printer
820 Self-diagnostic error: CPU
• An unexpected exception or
interruption occurs during the self-
• An error is detected in the MBU.
• Defective controller
• Defective firmware
• Loose MBU jumper
MBU error (The jumper is loose.)
Set the jumper (on the MBU) correctly.
The following codes are displayed:
• SC: 820
• code: 612
• detail: 40000000
Posted on Feb 19, 2011
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Posted on Jan 02, 2017
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