EPSON AcuLaser CX11/CX11F
Revision B
TROUBLESHOOTING
Scanner/ADF Section
287
3.5.2 Troubleshooting by Symptoms
This section explains about troubleshooting for typical troubles relating to the scanner/
ADF sections.
SCANNER/ADF SECTION DOES NOT OPERATE
Possible parts that caused the error
1.
HP detection plate
2.
Carriage motor
Troubleshooting
Start the “MFP Maintenance mode”, and perform “Self diagnosis” -
“Scanner” to see if there are any problems with the listed items below.
Note *:
If CN701 connection failure occurs, “NG” is displayed for “Motor:”. (Due to the
connection failure, the carriage motor does not operate, and the carriage cannot
move and failed to detect its home position during HP seek operation. As a result, the
malfunction is judged as motor failure.)
Table 3-14. Troubleshooting for Scanner/ADF by Symptom
Trouble
Description
Remedy
Operation failure
Scanner/ADF section does not
operate
Image is not scanned
correctly
Vertical bands appear when
scanning the document on the
document glass.
(vertical=carriage scanning
direction)
Clean the reflecting light receiving
window on the carriage removing
dust or any foreign material on it. If
the foreign materials are inside the
carriage and cannot be removed,
replace the carriage itself.
Vertical bands (paper feeding
direction) appear when scanning
the document using the ADF.
Clean the ADF scanning window
located beside the document table
and remove dust or any foreign
material on it. If the foreign
materials are inside the carriage and
cannot be removed, replace the
carriage itself.
Black dots and white dots appear
when scanning the document on the
document glass.
Clean the document glass surface
(both front and back side) and
remove the foreign materials.
Image is not copied
correctly
Image failure as shown below
occurs
• Too light or dark
(too much density)
• Odd colors
• Dark/Too bright
• Letters and figures cannot be
copied clearly
Check the panel settings below and
change them according to the paper
characteristics.
• Document type
• Density
• Contrast
• R/G/B
Refer to
Periodic Replacement Unit ” (p37)
Step Point to be checked
Remedy
1
Warm up operation
failure
Is “NG” displayed
beside “Warm up:”?
The possible cause of this error may be fluorescent lamp trouble
and the steps below should be followed.
1. Confirm if CN702 connector on the main board is connected
properly (reconnect the cable as necessary).
2. Confirm if the FFC cable is connected to the CCD sensor
board on the carriage unit properly (reconnect the cable as
necessary).
2
Origin correction
failure
Is “NG” displayed
beside “Correct:”?
The possible cause of this error may be home position detection
trouble and the steps below should be followed.
1. Confirm if there are any problems with the HP detection board
that is mounted on the HP side of the scanner unit lower case
(displacement, damage), and replace the HP detection board if a
defect is found .
2. Confirm if the cable is connected to the HP sensor board on the
carriage unit properly (reconnect the cable as necessary).
3. Confirm if CN701 connector on the main board is connected
properly (reconnect the cable as necessary)*.
3
Scanner carriage
motor driving failure
Is “NG” displayed
beside “Motor:”?
The possible cause of this error may be carriage motor operation
trouble and the steps below should be followed.
1. Confirm if the timing belt is strained correctly as well as the
carriage moves smoothly (Fix them as necessary)
2. Confirm if CN703 connector on the main board is connected
properly (reconnect the cable as necessary).
3. Confirm if there are any problems with the carriage motor
(replace the motor if a defect is found) Motor coil resistance
value: 10.9
Ω
±
7% (10.1-11.7
Ω
).
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