Lexmark 4227 Service Manual - Page 52
Print wire drive failure service check, Service Manual, 300 connectors will be, CN1 and CN2.
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4227-300 Print wire drive failure service check FRU/Symptom 1 Missing Dots Carrier moves, but there is no printing or printhead sound. Action Perform the Print Test to determine which wires are not printing. Disconnect the printhead cables from the sub logic board and check the resistance for the affected wires. The resistance for each wire should be around 8.5 ohms. Left Bank Right Bank Wire 1 CN3-11 & CN3-18 CN3- 9 & CN3- 4 Wire 2 CN4-11 & CN4-20 CN4- 9 & CN4- 2 Wire 3 CN3-13 & CN3-16 CN3- 7 & CN3- 6 Wire 4 CN4-13 & CN4-18 CN4- 7 & CN4- 4 Wire 5 CN4-15 & CN4-16 CN4- 5 & CN4- 6 Wire 6 CN4-17 & CN4-14 CCN4- 1 & CN4-8 Wire 7 CN3-15 & CN3-14 CN3- 3 & CN3- 8 Wire 8 CN4-19 & CN4-12 CN4- 3 & CN4-10 Wire 9 CN3-17 & CN3-12 CN3- 5 & CN3-10 Note: 4227-300 connectors will be CN1 and CN2. If the resistance for the affected wires is incorrect, disconnect the printhead cables from the printhead and measure the resistance of the printhead for the same wires. The resistance should be around 7.9 ohms. • If the resistance is correct, replace the printhead cables. • If the resistance is incorrect, replace the printhead. 2-28 Service Manual