東芝2830c出CE20故障代碼知識(shí)問(wèn)答,服務(wù)技術(shù)資料 ，CE20 Image quality sensor abnormality (no pattern level):
The output value of this sensor is out of a specified
range when the image quality control test pattern is
not formed.
P. 26-95
蘇州東芝報(bào)修電話696l6769，維修，售后服務(wù)