Step Questions / actions Yes No
4
Check pin 1 in J28 for voltage. The
voltage is only present when a flatbed
copy job is running. The voltage should
measure +24V AC. Is voltage present?
Go to step 5.
Replace the controller
board ( p.44
"Controller Board
Removal").
5
Ensure that the home position cable (J13)
is connected. Is the cable connected?
Go to step 6.
Properly connect the
cable.
6
Check pin 1 in J13 for voltage. The
voltage should measure +5V DC. Pin 2
should be GND. Is voltage present and is
it correct?
Replace the flatbed
unit. See “Flatbed
removal” in
“Replacement and
Adjustment”.
Replace the controller
board (
p.44
"Controller Board
Removal").
ADF Cover Open Service Check
Step Questions / actions Yes No
1 Is the ADF cover properly closed? Go to step 3. Go to step 2.
2
Close the ADF cover.
Does the problem go away?
Issue resolved Go to step 3.
3
Perform the ADF cover open sensor test.
See “Scanner Tests” in “System
Maintenance”. Does the sensor work
properly?
Go to step 4 Go to step 8.
4
On the bottom of the ADF cover, inspect
the ADF cover closed sensor actuator.
Does it move freely?
Go to step 6. Go to step 5.
5
Fix the actuator so it moves freely.
Does this fix the problem?
Issue resolved. Go to step 6.
6
Remove the ADF rear cover and inspect
the ADF cover closed sensor for dirt and
debris.
Is there dirt and debris present?
Go to step 7. Go to step 8.
Service Checks
269
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