shooting
6.5.23 FLATBED HOME POSITION SERVICE CHECK
Step Questions / actions Yes No
1
POR the machine. Does the CCD
move and return to the home
position?
Problem solved. Go to step 2.
2
Perform the home position sensor
test. See “Scanner Tests” in “System
Maintenance”.
Is the sensor working properly?
Go to step 3. Go to step 5.
3
Check J28 on the controller board
for proper connection.
Is it connected properly?
Go to step 4.
Properly connect
the cable.
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.4-7
"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.4-7
"Controller Board
Removal").
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