What is the solution for error code c26 on my toshiba e-studio 550 copier?

Question edited for clarity and spelling tashiba > Toshiba.

Bad error to have.

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Toshiba e-Studio 18 - C26 - Printcopy.info

https://printcopy.info > model=e-Studio 18 > code=C26
Code: C26; Description: Peak detection error: Lighting of the exposure lamp (white reference) is not detected when power is turned ON.

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it is cis unit error check connection between cis unit and main board otherwise replace cis unit ribbon OR cis unit OR main board

hi. i have problem in my Toshiba e studio 166. that machine toner light is blinking always. i try so many time nd i fixed new toner also. but i cant get any result of this. pls help me to solve this problem....

[C26] = Peak detection error
Does the exposure lamp light? (Perform the output check in the test mode: 03-267)
If no, Replace the SLG board-->inverter-->exposure lamp.

how to reset error code f14 in the toshiba e-studio 160

C26 indicates Peak detection error.
U need to make sure the exposure lamp is light when u switch ON machine.
If no light, then u need to check the inverter and the exposure lamp.

Do the following.
Hold down 0+8 and turn the copier on.
Type in 690 then hit start.
Make sure there is the number 2 displayed.
Press enter on the touch screen.
Reboot the machine when told to.

Press "Clear+8" and u will see the error code.

C-26 code it could be your exposure lamp.. when you turn on you copier keep the document feeder open and see if the lamp turns on...if it turns on and the turn off its ok.
Now clean your white reference guide..it's located under the glass..need to take off exposure glass and clean under it..especially a white strip on the edge of the glass.. NOTE: turn of your copier first then clean after adjustment turn on.

C26 is a peak detection error (when the copier scans the white reference plate there is an error in the detection)

The most common cause of C26 error is the failure the lens unit which is Toshiba's part number 6LA02100000.
The components that fail on the board are IC1 and IC10.
The board can be repaired, but most commonly it is replaced.