Service Manual
Page 51
...Service image processing unit: SCNCHN DMA underrun 841.99 842.00 843.00 843.01 Service image processing unit interrupt handler delayed crash Scanner failure: communication failure See "CCD service check" on page 2-47. See "CCD service check" on page 2-46. Also, see "Flatbed... home position service check" on page 2-46. Error Description Action 8xx.xx Scanner service errors 840.01 Scanner disabled: the scanner is posted when the MFP PORs. See "CCD ...
...Service image processing unit: SCNCHN DMA underrun 841.99 842.00 843.00 843.01 Service image processing unit interrupt handler delayed crash Scanner failure: communication failure See "CCD service check" on page 2-47. See "CCD service check" on page 2-46. Also, see "Flatbed... home position service check" on page 2-46. Error Description Action 8xx.xx Scanner service errors 840.01 Scanner disabled: the scanner is posted when the MFP PORs. See "CCD ...