Lexmark Optra C Service Manual - Page 51

5045-001 In addition to the cautions on the Material Safety Data Sheet (MSDS) label attached to the can, observe the following guidelines: • When spraying either fuser sensor (PS9 or PS10), place a piece of absorbent material below the sensor to catch the excess spray. • Use the supplied nozzle and direct the spray into the small apertures in the inside walls of the sensors. • Spray quickly (approximately 1 second applications). This spray leaves no residue, contains no CFCs and is plastic safe. Do Not use a substitute spray that has not been tested and is not plastic safe. FRU 1 Float 2 Poor connection/ Dirty Sensor 3 Fuser unit oil supply route 4 Fuser unit Mechanical controller PCB DC controller PCB Action Ensure the oil float is not catching on its housing and is free to move. Check the connections on the oil overflow sensor connector J29, fuser unit connector J21, (see "Fuser Connector (J21)" on page 5-37) and mechanical controller PCB connector J2009. Reconnect them and replace sensor PS10. Is the hose between the oil supply bottle and the gear pump plugged up? Clean or replace the parts. Replace the fuser unit. If the problem remains, replace and check as follows: 1. Mechanical controller PCB. 2. DC controller PCB, see "DC Controller Board Information" on page 2-2. Diagnostic Information 2-19