Lexmark 4227 Service Manual - Page 56
Tractor 2 cable, connectors on Main Logic Board
UPC - 734646117104
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4227-300 FRU Action 2 Main Logic Board Remove Tractor 2 from the printer but leave the cable connected. Make sure the slider (the black plastic piece just above the right cover) moves after turning the printer off and then back on. If the slider does not move after turning the printer off and then back on: • Make sure the slider and gear train are properly connected and move freely with the power off. • Make sure the Tractor 2 board is receiving: +26 V dc on CN1-1 and + 5 V dc on CN1-5 If not, check the cable connection and the voltages at main logic board CN13-1. The upper right pin at CN13 is pin 1 (+26 V dc) and the pin just beneath it is pin 5 (+5 V dc). If these voltages are not present, replace the main logic board. 3 Tractor 2 Motor Board/Cable Asm Check the following resistances of the Tractor 2 motor windings: 101 ± 5 ohms between pins: 1 and 6, 3 and 6, 2 and 5, 4 and 5. If the motor is good, replace the board/cable assembly. For more information on the Tractor 2 cable connectors, see "Tractor 2 cable connectors" on page 6-15. 2-32 Service Manual