Actions Yes No
Step 3
Run a flatbed copy.
Is it blank or black?
Go to step 5. Go to step 4.
Step 4
Did the sheet feed into the ADF?
Go to step 6. Go to step 5.
Step 5
Is the CCD ribbon cable properly connected to JCCD1 on the controller
board?
Go to step 6. Properly connect the
ribbon cable to JCCD1.
Step 6
Check for +14VDC on Pin 33 and 34 on connector JCCD1. Pin 31 and 32
are +5VDC. Are the voltages present?
Replace the flatbed
unit. See
“Flatbed
scanner assembly
removal” on page
333.
Replace the controller
board. See
“Controller
board removal” on
page 309.
Flatbed motor service check
Actions Yes No
Step 1
Ensure that the flatbed motor cable (JFB1) is connected.
Is the cable connected?
Go to step 2. Properly connect the
cable.
Step 2
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?
Replace the flatbed
unit. See
“Flatbed
scanner assembly
removal” on page
333.
Replace the controller
board. See
“Controller
board removal” on
page 309.
Flatbed home position service check
Actions Yes No
Step 1
POR the MFP.
Does the CCD move and return to the home position?
Problem solved. Go to step 2.
Step 2
Perform the home position sensor test. See
“Scanner tests” on page
211.
Is the sensor working properly?
Go to step 3. Go to step 5.
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Diagnostic information
146