Lexmark X642e Service Manual page 145

FRU
4 Motor driver card
5 Second scan sensor—
electrical checks
292.00 Error code service check
ADF cover open jam.
FRU
1 ADF upper top cover
Action
Turn the power off, and disconnect CN9 on the motor driver card.
Measure the voltages in the table below:
Second scan sensor—reflective type
(normally closed)
Connector CN9 (motor driver card)
CN9—Pin 4
CN9—Pin 5
CN9—Pin 6
Note: All voltages are approximate values.
If incorrect, replace the motor driver card. If correct, go to step 5.
Turn the power off and reconnect CN9 to the motor driver card.
Measure the voltages in the table below with the sensor in normal
operations (sensor closed) and with the sensor open (sensor flag
activated).
Second scan sensor—interrupter type (normally closed)
Connector CN9 (motor driver card)
Pin number Sensor closed
CN9—Pin 4
CN9—Pin 5 +1.16 V dc
CN9—Pin 6 +5.0 V dc
Note: All voltages are approximate values.
If the voltages are incorrect, replace the second scan sensor. If this
does not fix the problem, replace the complete ADF assembly. See
"ADF 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.
Action
Check the ADF upper top cover to make sure it closes properly and
does not come loose or pop up while the ADF is scanning.
0 V dc
+5 V dc
+5 V dc
Sensor open
0 V dc
+1.16 V dc
+0.15 V dc
4-15.
"Scanner
Diagnostic information
7002-xxx
0 V dc
2-107