Part III Appendix
Description of Self-Test Items 254
If the test result is Error, the drive malfunctions.
If the test result is FAIL, brightness control for the touch screen is abnormal.
Troubleshooting suggestion
a If the test result is Error, restart the equipment and re-perform the self-test. If the problem
persists, recover the equipment.
b If the test result is FAIL, check whether the cable connections are normal. If so, replace the
touch screen.
2.31 Z0903 Backlight Control Test for the Touch
Screen
Upper-level test item
Touch Screen Communication Test
Test content
The following dialog box appears during the test. The program turns off the backlight for 3 seconds
and then resumes the backlight If you can perceive the changes, click Yes, I Can; otherwise, click
No, I Can't. Click Retry to repeat the preceding procedure.
Test failure analysis
If the test result is Error, the drive malfunctions.
If the test result is FAIL, backlight control for the touch screen is abnormal.
Troubleshooting suggestion
a If the test result is Error, restart the equipment and re-perform the self-test. If the problem
persists, recover the equipment.
b If the test result is FAIL, check whether the cable connections are normal. If so, replace the
touch screen.
2.32 Z0904 Touch Function Test for the Touch
Screen
Test content
The dialog box appears on the primary monitor when performing the test. It has to change the
circle on the touch screen into green manually.
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