Lexmark Optra 4049 Series, Service Manual

Page: 53 / 194

Diagnostic Information 2-26
4049-XXX
If paper is jamming at the front exit of the printer, inspect the duplex
exit selector switch and the linkage to the printer exit deflector.
Check the switch by removing the duplex top cover and table cover
and reinstalling the duplex unit in the printer. Check for +5 VDC at
duplex system board J15-10. The voltage will change from 0 VDC to
+5 VDC as the selector lever is moved.
Also see “23 Paper Jams” on page 2-17 .
Paper Feed Problem, E Feeder/
100-Sheet Auxiliary Feeder
Check for the following: paper or envelope jammed in the feed path;
missing hold-down weight; adjustable guide out of position; feeder
cable loose, disconnected, or plugged in the wrong connector;
feeder incorrectly installed; worn or damaged rollers or gears;
warped or damaged envelopes used; envelopes improperly installed
(envelope flaps must rest against the paper edge guide); envelopes
other than 20 or 24 pound used in the E Feeder; paper
other than 20 or 24 pound used in the 100-sheet auxiliary feeder;
envelopes interleaved with paper.
Run the diagnostics Envelope Feed test and make sure the feed
magnet is being energized. If not, check the resistance of the mag-
net at J10-1 to J10-2 on the feeder cable; the resistance should be
from 105 Ohms to 155 Ohms. If the magnet is good, reconnect the
cable and monitor the voltage between the two pins of the connector
while running the Envelope Feed test; if the voltage does not
increase momentarily as the magnet is picked, replace the engine
board.
Check the adjustment of the feeder magnet. If paper is being bent or
double-fed, check the adjustment of the feeder restraint spring.
Paper Feed Problem, 200-Sheet Second Drawer, Rt
Run the Paper Feed Test and select “Tray 2”. If Tray 2 is not on the
Paper Feed Test menu, make sure the jumper at J16 on the engine
board is in place and that Tray 2 is properly connected at J17 on the
engine board.
If paper is not being picked, check for +34 VDC at J17-1 and J17-2
on the engine board. Test the torquer by shorting J17-1 to J17-4; the