Lexmark Optra T 4069 series Service Manual page 114

4069-XXX
271 Paper Jam - Check Bin 1 displays
FRU
1 Bottom Pass Thru Sensor
Flag Assembly
Control Board
274 Paper Jam - Check Bin 4 Displays
Service Tip: When a 274 Paper Jam Check Bin 4 message displays,
a problem exists with the top pass thru sensor assembly or the
control board.
FRU
1 Top Pass Thru Sensor
Flag Assembly
Control Board
Action
Check the flag for correct operation,
binding, broken parts or interference
from the sensor cable. If incorrect,
repair as necessary. If correct, check
to make sure the bottom pass thru
sensor is correctly connected to J5 on
the control board. Disconnect the pass
thru sensor cable and check the
voltage at J5-3. The voltage measures
approximately +5V dc. If incorrect,
check the voltage at J5-2. The voltage
measures approximately 0V dc. If
incorrect, replace the sensor
assembly. If this does not fix the
problem, replace the control board.
Action
Check the flag for correct operation,
binding, broken parts or interference
from the sensor cable. If incorrect,
repair as necessary. If correct check to
make sure the top pass thru sensor is
correctly connected to J11 on the
control board. Disconnect the pass
thru sensor cable and check the
voltage at J11-3 The voltage
measures approximately +5V dc. If
incorrect, check the voltage at J11-2.
The voltage measures approximately
0V dc. If incorrect, replace the sensor
assembly. If this does not fix the
problem, replace the lower control
board.
Diagnostic Information
2-85