• “Cartridge gearbox service check” on page 103
• “Tray 1 pick/lift motor gearbox service check” on page 104
• “171.xx Cooling fan service check” on page 104
• “9xx error messages” on page 105
• “System software error service check” on page 108
• “NVRAM mismatch failure service check” on page 112
• “Base printer symptoms” on page 114
• “Dead machine service check” on page 114
• “Controller board service check” on page 115
• “Control panel service check” on page 116
• “Control panel button service check” on page 117
• “USB print service check” on page 118
• “Front door not closed service check” on page 119
• “Network service check” on page 120
7015
Diagnostic information
96