Description of Self-diagnosis Test Items C-9
C.1.18 Z0602 Touch Screen LCD Monitor I2C Connection
Test
Test Content
The super stratum test item：Z0201 PC Module and MF FPGA Interconnection Test.
Check if the I2C communication serial port between the multifunction FPGA and touch screen LCD.
This item will open the screen-saver and then recover. Brightness of LCD will turn down and then
recover.
Suggestion when test failed:
1. Check if the following listed hardware and the related circuits are normal, check if the interfaces
are well welded and if the module is working normally. The screen-saver of setting will be
closed after shutting down.
2. Check touch-screen and then see if there is need to change the digital board.
C.1.19 Z0701 Keyboard USB Interconnection Test
Test Content
Test if keyboard and USB port on the main unit can communicate normally.
Suggestion when test failed:
1. Check if the following listed hardware and the related circuits are normal, check if the interfaces
are well welded and if the module is working normally
2. First option is to change the keyboard board and then the digital board.
C.1.20 Z0702 Keyboard Key, Encoder, TGC, Trackball
Function Test
Test Content
The super stratum test item：Z0601 Keyboard USB Interconnection Test
It mainly tests whether the buttons, encoders, TGCs, trackball, backlight LEDs and indicating LEDs
in the keyboard are normal, and reads board ID, keyboard FPGA and version of program.
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