CE40 fault on a Toshiba e-studio 5520

[Guest]

Heya all - we have two Toshiba e-studio 5520, both second hand, one for use, and one for parts. The first had a CE40 failure ten days ago, and following instructions on the toshiba manual I seemed to have solved it, only for the machine to now have a E11 failure - it starts to print, takes the paper from the tray, but jams just as/before the sheet gets to the transfer roller. (E11 flashes up on the screen and it judders to a halt - when we open the right hand door slowly the paper is stuck in a similar point every time, folded over) Losing patience, being a little bit over my head (I'm no IT guy - little more than basic computer skills) and having other work to do, we called the local support company. Their tech came, seemed to have it fixed and printing test sheets when we decided to test it for real by sending from a file from a computer for printing. Suddenly, back to square 1, same E11 fault. The tech gave up/the boss didn't want to spend more money after over 4 hours, so I tried the second machine. Plugged back in all missing parts, switched it on, but..... CE40 fault.
HELP!
All help gratefully appreciated!

[Oze]

Re: CE40 fault on a Toshiba e-studio 5520

The service manual has a very detailed set of instructions to troubleshoot this image quality control issue....

[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 / 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 628 or above, it is defined as high-density pattern abnormality.
(3) Set the values of “Image quality closed-loop control / Contrast voltage (08-556)” and “Drum
surface potential sensor control setting (08-2561)” to “0” (Invalid).
(4) Perform “Enforced performing of image quality open-loop control (05-394)”.
(5) Output the image quality control test pattern (04-270) more than one time and the list print
([9][START]) in the adjustment mode (05), and check the patch of the color identified in step (1)
to see if the image is abnormal.
(6) Replace the image quality sensor or LGC board.
(7) 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).
|||||||||||||||||||||||
Under 628 (Y, M, C and K) |

628 or above (Y, M, C and K)
High-density pattern abnormality
• Check if the laser shutter is working properly.
<Procedure>
1. Take off the process unit so that the laser shutter
can be easily seen.
* Clean around the laser shutter if the developer has
been spilled over.
2. While pressing the digital keys [0] and [3]
simultaneously, turn the power ON.
3. Key in “201”.
4. Press the [START] button and check if the shutter
is opened and then closed (reciprocating 1cycle).
• Check if the developer unit has been installed properly.
1. Visually check the installation status of the developer
unit, and correct it if there is any abnormality.
|
To (8)
(If you have already performed this checking cycle once,
proceed to step (3).)
||||||||||
Normal Abnormal
Abnormal image:
Blank print, Solid print, White banding, Color banding, White spots,
Poor transfer, Uneven image density, Faded image (low density),
Uneven light distribution, Blotched image.
* Blank print: including when one of the YMCK colors is not printed.

Correct the abnormal image.

Proceed to step (7).
(8) Perform “Automatic initialization of image quality control (05-396)” and make sure it is completed
normally. (Error [CE40] does not appear.) Then perform “Automatic gamma adjustment”.
(9) Clear all “Image quality control abnormal detection counter Y to K display/0 clearing (08-573 to
576)”.
(10) Check if any of the springs for supplying power to the transfer belt unit is deformed. Replace the
spring if it is deformed.

But as you stated you followed these steps on the first machine yeah?

[Brendan]