Display problems when turned on it displays question mark (?) then rolling color patterns.

The LED battery voltage semicircular color display pattern should be a solid green color when the batteries are fully-charged. This indicates that the batteries are at their maximum capacity and ready for use.

Hi
I hope that this will help you

[CE40] Image quality control test pattern abnormality

(1) Use "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to 576)"to check the abnormal occurring condition for each color.

(2) Check "Output value display of image quality sensor / Low-density pattern (05-391-0 to 3)" to

check if the low-density pattern abnormality occurs for each color. The values under 320 for Y, M

and C, and under 220 for K are defined as low-density pattern abnormality.

(3) Check "Output value display of image quality sensor / High-density pattern (05-390-0 to 3)" to

check if the high-density pattern abnormality occurs for each color and identify the color which

pattern is abnormal. If the value is 630 or above, it is defined as high-density pattern abnormality.

(4) Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Image

quality closed-loop control / Laser power (08-557)" to "0" (Invalid).

(5) Perform "Enforced performing of image quality open-loop control (05-394)".

(6) Output the image quality control test pattern (04-270) more than one time and check the patch of the color identified in step (3) to see if the image is abnormal.

(7) Replace the image quality sensor.

(8) Set the values of "Image quality closed-loop control / Contrast voltage (08-556)" and "Image

quality closed-loop control / Laser power (08-557)" to "1" (Valid).

(9) Perform "Enforced performing of image quality open-loop control (05-394)" and make sure it is

completed normally. (Error [CE40] does not appear.)

(10) Clear all "Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to 576).

Good Luck

Regards

sounds like the screen has gone take it back to shop

Print the nozzle check pattern to determine whether the ink is being ejected properly from the FINE Cartridge Nozzles. Use this function when the printed results are blurred or the color is incorrect. Performing Maintenance 1 Press [ON/OFF] to turn ON the machine.
2 Press [Menu].

3 Display the Maintenance screen.
(1) Use [] or [] to select <Maintenance/settings>, then press [OK].
The Maintenance/settings screen is displayed.

(2) Use [] or [] to select <Maintenance>, then press [OK].
The Maintenance screen is displayed.

(3) Use [] or [] to select the setting item, then press [OK].
The setting screen for the selected item is displayed.
Printing The Nozzle Check Pattern 1 With the machine ON, load a sheet of A4- or Letter-sized plain paper in the Auto Sheet Feeder.
2 Print the Nozzle Check Pattern.
(1) Display the Maintenance screen.
(2) Use [] or [] to select <Nozzle check>, then press [OK].
The pattern print confirmation screen is displayed.

(3) Use [] or [] to select <Yes>, then press [OK].
The nozzle check pattern is printed.

Hi,
When the head alignment sheet was not filled in properly Printer show E7.

• Confirm circles on head alignment sheet are filled in properly MP160

Head Alignment Sheet The head alignment sheet was not filled in properly.Confirm the circles were filled in as follows:
Good example:



Bad examples:



If more than one circle is filled in, reprint the Head Alignment Sheet.
Print Head Alignment

1. Ensure that the printer is powered on and open the paper output tray. (Confirm that the paper thickness lever is set to the left.)
   
   
   
   
2. Load a sheet of A4 or Letter-sized plain paper in the auto sheet feeder (or ASF).
   
   
3. Press the <Maintenance> button several times until [P] is displayed in the LED.
   
   
   
   
4. Press the <Black> or <Color> button. The machine prints the head alignment sheet.
   
   
   
   
5. From each group, select the pattern which has the least visible streak.
   
   
   Example of the pattern with the least visible vertical streak
   
   
   Example of the pattern with the most visible vertical streak
   
   
6. Pencil in the circles on the left side of the selected pattern, using a dark pencil.
   
   
   < 1 > Good example
   
   
   < 2 > Bad example: Checkmark
   < 3 > Bad example: Line only
   < 4 > Bad example: Not dark enough
   
   
7. Open the document cover and load the head alignment sheet on the platen glass.
   
   Note: - Place the printed side down.- Align the sheet with the alignment mark (shown by the arrow) on the lower right corner of the platen glass.
   
   Alignment Mark
   
   
8. Close the document cover gently.
   
   
9. Confirm that U is displayed in the LED.
   If U is not displayed, press the <Maintenance> button several times until [U] is displayed in the LED.
   
   
   
   
10. Press the Black or Color button.
    
    
11. The machine scans the head alignment sheet and aligns the print head automatically.

i apologize for the inconvinience.

the possible reason why its printing the right color, is bec. some of the nozzles might be clogged by dried inks, so when inks come out, the combination of colors are not balance. try printing a nozzle check first, if the nozzle check have gaps or breaks, try head cleaning, nozzle check after it so you can see if it improve or still w/ gaps, just do nozzle check, head cleaning, then nozzle check, head cleaning alternately until no more gaps then try to print.

Printing a nozzle check pattern
Load paper in your printer
In SelecType mode, press the Paper Feed () or Paper Feed () button until TEST PRINT is displayed on the LCD panel, and then press the SelecType button.
Press Paper Feed () or Paper Feed () button to display NOZZLE CHECK
Press SelecType button to display PRINT
Press the Enter button. The nozzle check pattern is printed as shown below. After printing, printer exits the SelecType mode and return to the READY status.
Nozzle check pattern examples:
good
head cleaning necessary


headcleaning: press the cleaning button for 3 seconds

Hi ...

I would suggest you try and clean the print head and that should resolve the problem. Follow the below steps to clean the print head:

Perform a Cleaning of the print head:
Caution: Cleaning consumes a certain amount of ink. Perform Cleaning only when necessary.
Note: The pattern varies depending on the printer and version of Windows being used.

1. Click 'Cleaning' to perform print head cleaning from the Pattern Check window and proceed to step 3 of the print head cleaning instructions. If the Pattern Check window is closed, skip this step and proceed to step 2.
   
   
   
   
   
2. To perform a print head cleaning from the Maintenance window, click 'Cleaning'.
   
   
   
   
3. When the Print Head Cleaning window is displayed, select the target ink group for 'Cleaning'.
   
   
   Note: When performing Cleaning for all colors, check 'All Colors'.
   
   
   
   
   Note: When performing Cleaning for Black only, deselect 'All Colors' and check 'Black'.
   
   
   
   
   Note: When performing Cleaning for Color only, deselect 'All Colors', and check 'Color'.
   
   
   
   
4. After selecting the target ink group click 'Execute' to perform the cleaning of the print head nozzles.
   
   
   
   
5. When the confirming message is displayed, check the contents, and click 'OK'.
   
   
   Caution: Although the Nozzle Check window is displayed, do not perform any other operations until Cleaning is completed.. Cleaning will take about 40 seconds.
   
   
   
6. Print a Nozzle Check Pattern and examine.
   
   
7. Perform Cleaning again if necessary.
   
   
   Memo: If the pattern is still abnormal after two Cleanings, perform up to two Deep Cleanings.
   
   
   

Perform Deep Cleaning of the print head
Caution: Deep Cleaning consumes a larger amount of ink than normal Cleaning. Perform Deep Cleanings only when necessary.

1. In the Maintenance window, click 'Deep Cleaning'.
   
   
   
   
   Note: The layout varies depending on the printer and version of Windows you are using.
   
   
2. When the Deep Cleaning window is displayed, select the target ink group for Deep Cleaning.
   
   
   
   
   Note: When performing Cleaning for all colors, check 'All Colors'.
   
   
   
   
   Note: When performing Cleaning for Black only, deselect 'All Colors' and check 'Black'.
   
   
   
   
   Note: When performing Cleaning for Color only, deselect 'All Colors', and check 'Color'.
   
   
   
   
3. Click 'Execute'.
   
   
   
   Memo: By clicking 'Initial Check Items' before clicking 'Print Check Pattern', you can see the specific confirmation items in Nozzle Check.
   
   
4. When the confirming message is displayed, click 'OK'. (The Power lamp will blink green and Deep Cleaning starts. The blink stops when Deep Cleaning is over.)
   
   
5. When Deep Cleaning starts, check the contents, and click 'OK'.
   
   
   Caution: To prevent interruption of the Deep Cleaning process, do not perform any other operations until Deep Cleaning is completed. When the operation of the printer is stopped, Deep Cleaning is completed. Deep Cleaning will take about 75 seconds.
   
   
   
6. Print Nozzle Check again.
   
   
   Note: If the printed pattern is still not normal, perform steps 1 through 4 of the Deep Cleaning process one additional time.
   
   
   Caution: If after two Deep Cleanings the Nozzle Check Pattern is still not normal, turn the printer off and let it sit for 24 hours or more before attempting another Deep Cleaning again. The wait time may allow dried ink in clogged print head nozzles to liquefy, and resolve the problem
   

If this does not resolve the problem, please reply back and we'll try the next step ...

Don't forget to vote if this helps ... Cheers :)

Hi ...

Well it looks like the head alignment sheet was not filled in properly ...
Confirm the circles were filled in as follows: Good example:



Bad examples:



If more than one circle is filled in, reprint the Head Alignment Sheet.
Print Head Alignment

1. Ensure that the printer is powered on and open the paper output tray. (Confirm that the paper thickness lever is set to the left.)
   
   
   
   
2. Load a sheet of A4 or Letter-sized plain paper in the auto sheet feeder (or ASF).
   
   
3. Press the <Maintenance> button several times until [P] is displayed in the LED.
   
   
   
   
4. Press the <Black> or <Color> button. The machine prints the head alignment sheet.
   
   
   
   
5. From each group, select the pattern which has the least visible streak.
   
   
   Example of the pattern with the least visible vertical streak
   
   
   Example of the pattern with the most visible vertical streak
   
   
6. Pencil in the circles on the left side of the selected pattern, using a dark pencil.
   
   
   < 1 > Good example
   
   
   < 2 > Bad example: Checkmark
   < 3 > Bad example: Line only
   < 4 > Bad example: Not dark enough
   
   
7. Open the document cover and load the head alignment sheet on the platen glass.
   
   Note: - Place the printed side down.- Align the sheet with the alignment mark (shown by the arrow) on the lower right corner of the platen glass.
   
   Alignment Mark
   
   
8. Close the document cover gently.
   
   
9. Confirm that U is displayed in the LED.
   If U is not displayed, press the <Maintenance> button several times until [U] is displayed in the LED.
   
   
   
   
10. Press the Black or Color button.
    
    
11. The machine scans the head alignment sheet and aligns the print head automatically.

Please vote if this helps .... Cheers :)

Try Booting To An External Monitor If able to...
If Display is Normal In It, Your LCD Display Panel Is Bad... The Circuit Board Attached to the Display Panel has Gone Bad...


But If You Hook It Up To External Monitor and It Doesnt Work...
Your Video Card/Chip is bad