Lexmark 248X-200 series, Service Manual

Page: 40 / 172

2-22
Service Manual
24XX-200
Paper Present sensor service check
FRU Action
1 Paper Present
sensor With no paper in the printer, the tractor in the
push position, and the Paper Select lever set to
continuous forms, press Load/Unload; the
gear train should turn forward to load paper.
Activate the Paper Present sensor with a
screwdriver and press Load/Unload again; the
gear train should turn backward to park paper.
Measure the voltage between CN5-2 (paper
present signal) and CN5-3 (GND) on the logic
board. There should be 0 V dc when there is
paper in the printer, and +5 V dc when there is
no paper in the printer.
• Be sure the Paper Present sensor and its
actuator are properly installed and not
damaged.
• If the problem remains, replace the Paper
Present sensor.
2 Logic board If the ASF is being used, it is normal for the
Paper Out LED not to blink when there is no
paper in the printer. Do the following:
• Enter the Setup Menu.
• Be sure the ASF setting is off, unless the
ASF is installed.
• If the Paper Present sensor is good and the
ASF setting is on, replace the logic board
and reset the bidirectional print adjustment.
Go to
“Bidirectional print adjustment” on
page 4-4 .