Flatbed Legal Scan Service Check; Adf Streak Service Check - Konica Minolta bizhub 4020 Service Manual

4.8.12 Flatbed legal scan service check

Action
Step 1
Check the JPLEN1 connector on the controller board for proper
connection.
Is it properly connected?
Step 2
Re-connect the cable to the controller board.
Did this fix the problem?
Step 3
Enter diagnostics mode and navigate to:
SCANNER TESTS >Sensor Test
Select Paper FB Long to perform the sensor test.
Did it pass?
Step 4
Replace the flatbed. See Flatbed assembly
Did this fix the problem?
Step 5
Replace the controller. See
Did this fix the problem?

4.8.13 ADF streak service check

Actions
Do streaks appear on the middle of scans
when using the ADF?
bizhub 4020/3320 Service Manual
removal.
Controller board removal.
Yes
Clean the ADF glass on the flatbed using
a lint-free cloth. Also, clean the separator
roll and pad with a damp cloth.
Yes
Go to step 3.
The problem is
solved.
Go to step 5.
The problem is
solved.
The problem is
solved.
- 166 -
No
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Contact the next
level of support.
No
No issue to fix.