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Model Focus: HP 4100MFP/4101MFP Troubleshooting
tips for printers with no (blank) display To begin, you want to rule out a dead printer by printing the engine test (hole located under fan duct on printers left cover). If engine test is good proceed as follows: 1) Remove network card (if applicable) 2) Remove Hard drive a.Often with the hard drive removed the printer will go ready but display: "hard disk not found copy and send disabled" 3) Remove memory dimm -J2 a.Normally with the memory removed the printer will display: 53.10.03 error 4) Remove any additional memory J3 and J4 (if applicable) 5) Disconnect the cable from the ADF assembly to the scanner control board a.The printer will work but not use of ADF assembly. 6) Remove the copy processer board and the high speed copy connect cable that is connected to the formatter. a.Typically with the SCB removed the printer will display: "check cables and cycle power" If the previous process did not revive the display, replace components as follows: Firmware • Formatter • Control panel + connector PCB assembly • Firmware C9168-67915 • Formatter C7844-69001 • Control panel RG5-6563 • 64mb memory Q7708-67951 • Connector PCB assembly RG5-6534 • Copy processer board C8541-67901
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