Xerox 4400DT Service Manual - Page 123

Tray Motor Assembly Checkout Note: Tray 1 interlocks the 24 VDC supply to the Tray 1 Size PWB, Tray 1 Feeder PWB, Tray 2 and Tray 3. Tray 2 interlocks the 24 VDC supply to the Tray 2 Size PWB, Tray 2 Feeder PWB, and Tray 3. Tray 3 interlocks the 24 VDC supply to the Tray 3 Size PWB and the Tray 3 Feeder PWB. Tray Motor Assembly Checkout Procedure Step Actions and Questions Yes No 1 1. Switch the printer power OFF. Go to step 2. Go to DC 2. Remove the Paper Tray to be tested. Power 3. Switch the printer power ON. 4. Measure the voltage from the lower contact of the Paper Feeder Socket to frame ground. (LVPS) on page 3-4. Is the voltage +24 VDC? 2 On the left side of the paper tray, measure the motor Go to step 4. Go to step 3. winding resistance from the middle contact to the lower contact of the Paper Feeder Connector. Is the resistance reading between 110 - 130 ohms? 3 On the paper tray, disconnect J673 from the Paper Replace Replace the Feeder Connector. Measure resistance between pins 1 Paper Motor and 4. Feeder Assembly Is the resistance reading between 110 - 130 ohms? Connector (PL 2.2 on page 7-8). (RRP 2.4 on page 6-24). 4 Check the Paper Tray for damage, contamination, Replace the Repair/ binding, misalignment or obstruction. Motor replace as Are all components clean, connected properly, aligned properly and without damage? Assembly (RRP 2.4 on page 6-24). necessary. 3-26 Phaser 4400 Laser Printer Service Manual