Scanner Diagnostics; Shading Test - Samsung CLX-8640 series Service Manual

4. Troubleshooting

4.5.5.3. Scanner Diagnostics

Shading Test

•
Diagnostics > Scanner Diagnostics > Shading Test
Purpose
Operation Procedure
Verification
Specification
Reference
Scanner/DADF NVM Read/Write
•
Diagnostics > Scanner Diagnostics > Scanner/DADF NVM Read/Write
Purpose
Operation Procedure
Verification
Specification
Reference
Code NVM Description
05-0000 Pick up Count
05-0010 Document Duplex Reverse Point
05-0020 Document Exit Turn Reverse Point
Scanner/DADF Test Routines
•
Diagnostics > Scanner Diagnostics > Scanner/DADF Test Routines
Purpose
Operation Procedure
Verification
Specification
Reference
4-53
To check quality of scanned images, especially defect in optical devices, including lens, mirror,
lamp, and etc, are suspected.
Press "Share and Print report" to see if the current shading value is correct.
Mono, red, green, blue gray shading values will be shown on the printed report.
When the previous shading value is needed, press "Print Last Shade Report".
N/A
N/A
N/A
To read and/or write values in the scanner and DADF memory.
When the main "NVM Read/Write" window displays, users can navigate through the list of codes
with descriptions and saved values.
Users can also directly input a code to the text box to find a NVM.
After selecting a code, the "Edit" button will be enabled only if the code is writable.
If the selected code is writable and the "Edit" button is enabled, press the button to configure the
desired value for the code.
N/A
N/A
N/A
To perform test routines for the scanner and DADF.
When the main scanner/DADF Test Routines window displays, users can navigate through the list
of routines that display along with description.
Users can also input a code to the text box to find a routine directly.
After selecting one routine, pressing "OK" button will open the test window that lists selected routine.
Users can start/stop a desired test routine.
N/A
N/A
Table below
Meaning
Pick up Roller Life Count
Document Duplex Reverse Point
Document Exit Turn Reverse Point
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