Lexmark T620 Service Manual - Page 173

4069-5XX/7XX To run the Disk Test/Clean Test: 1. Select Disk Test/Clean from the Device Tests menu. - "Files will be lost/Go or Stop?" message displays to warn the user that all contents on the disk will be lost. 2. To exit the test immediately and return to the Device Tests menu, press Return/Stop. To continue with the test, press Go. - If go is selected, "Disk Test/Clean/BAD:000000 00%" message displays. The screen updates periodically indicating the percentage of test completed and the number of bad blocks found. 3. The power indicator blinks during the test. The test can be canceled anytime during the test by pressing Return/Stop. - Once the test is complete, the power indicator turns on solid and a message displays. - "xxxx Bad Blocks/yyyyyy Usable" message displays if fewer than 2000 bad blocks are detected. xxxx indicates the number of bad blocks and yyyyyy indicates the number of usable blocks. - "xxxx Bad Blocks/Replace Disk" message displays if more than 2000 bad blocks are detected. The disk cannot be recovered because too many bad blocks exist on the disk. 4. Press Go or Return/Stop to return to the Device Tests menu. Flash Test This test causes the file system to write and read data on the flash to test the flash. WARNING: This test destroys all data on the flash because the flash is reformatted at the end of the test. To run the Flash Test: 1. Select Flash Test from the Device Tests menu. - The power indicator blinks while the test is running. - "Flash Test/Test Passed" message displays if the test passes and the power indicator turns on solid. - "Flash Test/Test Failed" message displays if the test fails and the power indicator turns on solid. 2. Press Go or Return/Stop to return to the Device Tests menu. Diagnostic Aids 3-7