Lexmark T620 Service Manual - Page 88

4069-5XX/7XX 990 Service Error, envelopes fail to feed from the hopper. FRU 1 D.C. Feed Motor Assembly 2 Envelope Feeder System Board Action Check the motor and motor cable for any signs of loose wires or poor connections. Check to make sure the motor cable is connected to the envelope system board. Check the voltage on J4-1. The voltage measures approximately +24 V dc. If incorrect, replace the envelope system board, if correct, measure the voltage at J4-6. The voltage measures approximately +5 V dc. If incorrect, disconnect J4 and measure the voltage again. If incorrect, replace the envelope feeder system board. If correct, replace the D.C. motor assembly. 260 Paper Jam displays, unable to clear and envelopes fail to feed from the hopper. Kick rolls ARE NOT rotating. FRU 1 Main Drive Belt 2 Gears 3 Clutch Latch Assembly 4 Master Cam Gear Master/ Kick Gear Action Check the belt for correct installation and for signs of damage. Replace as necessary. Check all the gears for correct installation and for signs of damage. Repair or replace parts as necessary. Check the clutch latch assembly to make sure it moves freely. Check the master cam gear and master/kick gear to make sure they rotate together. If not, then the tenons on the master kick gear may be sheared off. If incorrect, replace the master kick gear. 2-60 Service Manual