Lexmark 2380 Service Manual - Page 56

Power Service Check If the symptom is that the Power light varies in intensity, make sure the upper feed roll shaft has the ground spring. If it does not, install ESD Kit P/N 1368036. FRU 1 Power Supply 2 Sub Logic Board Action If the carrier does not move to the left after turning the printer off and then on, do the following: • Make sure the line cord voltage to the power supply is correct. • Make sure the power supply outputs are +5 V dc at CN1-2 and +26 V dc at CN1-4. If the voltage is incorrect, check the internal fuses before replacing the power supply. Generally if F3 is blown it is due to a short in the printhead; replace the printhead and the fuse before powering on again. • Check for +5 V dc at main logic board CN11-3 and sub logic board CN1-3, and for +26 V dc at main logic board CN11-1 and sub logic board CN1-1. • Make sure the short flexible cable is undamaged and correctly installed. If the carrier moves to the left after turning the printer off and then on, do the following: • Move the carrier to the right and turn power on. The carrier should move to the left. The power LED should be on steady whenever the printer is on. If the carrier moves to the left during after turning the printer off and then on, but the power LED is not on steady: Make sure the sub logic board is receiving voltage by checking for +5 V dc at sub logic board CN1-3. • If no voltage or power cable problem is found, make sure there is +5 V on pins 3 and 9 of the sub logic board connector for the operator panel cable. If the voltage is incorrect replace the sub logic board. 2-32