Lexmark X642e Service Manual page 151

FRU
5 ADF exit sensor—electrical
checks
294.03 Error code service check
ADF exit jam sensor on. This error generally indicates that the ADF exit sensor (A) is defective, exit sensor cable
is open, or the voltages on the motor driver card at pins 1, 2, or 3 are incorrect.
Note: Before starting this service check, make sure the sensor cable is installed correctly.
FRU
1 ADF—jammed media
Action
Turn the power off, and reconnect CN9 to the motor driver card.
Measure the voltages in the table below with the sensor in normal
operation (sensor closed) and with the sensor open (sensor flag
activated).
ADF exit sensor—interrupter type (normally closed)
Connector CN9 (motor driver card)
Pin number Sensor closed
CN9—Pin 1
CN9—Pin 2 +1.16 V dc
CN9—Pin 3 +5.0 V dc
Note: All voltages are approximate values.
If the voltages are incorrect, replace the ADF exit sensor. If this does
not fix the problem, replace the complete ADF assembly. See
complete assembly removal" on page
Note: Whenever the complete ADF assembly is replaced, it is
necessary to perform scanner registration. See
registration" on page 4-4.
A
Action
Check for any signs of media or other debris that might be present in
the ADF assembly around the exit sensor flag. Remove any media or
debris. If nothing is found, go to step 2.
Sensor open
0 V dc
+1.16 V dc
+0.15 V dc
4-15.
"Scanner
Diagnostic information
7002-xxx
0 V dc
"ADF
2-113