Lexmark Optra C710 Service Manual - Page 104

5016-001 D Transparencies are not detected, printer does not slow to half speed. FRU 1 OHP Detect Reflection Plate 2 Transparency Paper Detect Sensor (PHI 5) Action Check the inner front cover OHP detect reflection plate to be sure it is not damaged or missing. Clean the plate, if dirty, or replace if damaged or missing. This sensor is located on the paper pass/ transparency detect sensor board. Check the sensor for proper operation. If no problem is found, replace parts in the following order: 1. Paper Pass/Transparency Detect Sensor Board 2. Engine Board 3. Cables E Labels do not feed, or feed improperly from the MPT. FRU 1 Labels Action Be sure the labels are paper labels designed for laser printers. Do not use vinyl labels. Use only labels that have no gaps between them. Be sure no adhesive is exposed on the sheets. Check the labels to be sure they do not have a coating or sizing applied to make the labels liquid-resistant. F Card stock does not feed properly from the MPT. FRU 1 Card Stock Action A small quantity of card stock can be fed from the MPT only. Be sure not more than 30 sheets of card stock are loaded into the MPT tray at a time. Be sure the stock meets specifications. 2-38 Service Manual