Common Part Numbers
• RM1-3078
• RM1-3126 / RM1-3126-000 (also compatible with LBP3000 series)
• RM1-3079
• RK2-1135
When to Replace the Logic Board
You may need a replacement if your printer exhibits these symptoms:
• Not detected by your computer (USB unrecognized errors)
• Continuous blinking red or orange error lights
• The printer powers on but fails to execute print jobs or freezes mid-print
• Blank pages feed through despite new drivers and a working cable
• Fatal hardware or system error codes (such as E000 or E001)
