Service Checks; Adf Service Check - Lexmark X203n Servise Manual

Service checks

Service checks which involve measuring voltages on the LVPS/HVPS (low voltage power supply/
high voltage power supply board) should be performed with the MFP positioned on its back side.
Note: When you make voltage readings, always use frame ground unless another ground is
specified. See the wiring diagram in the back of the book for more information.

ADF service check

FRU
ADF
ADF cable
Controller card
ADF pick pad
ADF separator roller
ADF paper tray and extender.
ADF cover
Action
Ensure that the proper paper size is being used in the ADF.
Are the paper guides on the ADF tray properly adjusted?
Inspect the ADF separator roll and ADF separator pad for wear. If they are worn,
replace them. If they are dirty or have a buildup on them, clean them with a damp
cloth.
If the ADF fails to pick check to make sure that the paper height in the ADF input
tray is beneath the height marker on the ADF paper guides.
Inspect the paper present sensor on the ADF.
• Perform the paper present and scan first sensor tests. See
page 3-12
• Check the flags on the sensor. Are they able to move freely? If the sensor
flags are damaged, replace the ADF assembly.
Make sure the ADF cable is securely connected to the ADF and the controller
card.
If the cable is properly connected, perform the following checks:
• Check the ADF cable for continuity.
• Check pin 1 on controller card connector J2 for +5V.
• Pin 3 should be ground.
If voltages are present, replace the ADF.
If replacing the ADF does not fix the problem, replace the controller card.
If the ADF is multi feeding, check the ADF pick roller and pad for dirt. Remove
them from the MFP, and clean them with a lint free cloth and isopropyl alcohol.
If the leading edge of the paper is damaged, instruct the user to lessen the
number of documents being copied from the ADF at one time.
If there are excessive misfeeds from the ADF, verify that the ADF paper tray and
extender are properly installed.
Skews and jams at the ADF paper present sensor might be caused by an
improperly closed ADF cover. Ensure the ADF cover is closed properly.
7011-2xx / 3xx
"Sensor Test" on
2-23
Diagnostic information