Adf Cover Open Service Check - Lexmark CX310n Service Manual

Actions
Step 3
Check JFBM1 on the controller for proper connection.
Is it connected properly?
Step 4
Check pin 1 in JFBM1 for voltage. The voltage is only present when a
flatbed copy job is running. The voltage should measure +24V AC.
Is voltage present?
Step 5
Ensure that the home position cable (JHS1) is connected.
Is the cable connected?
Step 6
Check pin 1 in JHS1 for voltage. The voltage should measure +5V DC. Pin
2 should be GND.
Is voltage present and is it correct?

ADF cover open service check

Actions
Step 1
Is the ADF cover properly closed?
Step 2
Close the ADF cover.
Does the problem go away?
Step 3
Perform the ADF cover open sensor test. See
page 183.
Does the sensor work properly?
Step 4
On the bottom of the ADF cover, inspect the ADF cover closed sensor
actuator.
Does it move freely?
Step 5
Fix the actuator so it moves freely.
Does this fix the problem?
"Scanner tests" on
Diagnostic information
138
Yes No
Go to step 4. Properly connect the
cable.
Go to step 5. Replace the controller
board. See
board removal" on
page
Go to step 6. Properly connect the
cable.
Replace the flatbed. Replace the controller
See "Flatbed scanner board. See
assembly removal" on board removal" on
page 252. page
Yes No
Go to step 3. Go to step 2.
Issue resolved. Go to step 3.
Go to step 4 Go to step 8.
Go to step 6. Go to step 5.
Issue resolved. Go to step 6.
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"Controller
239.
"Controller
239.