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6.7 Touch Screen Control Board
6.7.1 Introduction
As the interface between the touch screen and the main control board, the touch screen control board
transfers the touch actions from the users to recognizable signals by main control board. You may
need to make some adjustment to the touch screen control board during use.
6.7.2 Components
With the 4-wire touch screen controller chip TSC2007 as its core chip, the board communicates with
the main control board about touch point positions through an I2C interface.
Figure 6-12 Connection of touch screen
6.7.3 Touch Screen Control Board Problem
Table 6-11 Troubleshooting for touch screen problem
1.
1. Check whether the main control board works
properly (e.g. check whether the display screen displays
normally, and whether the analyzer can be operated
with a mouse.). If there is any problem, start
troubleshooting for the main control board first;
2.
2. Check whether the connecting cable between the
touch screen control board and the main control board
get loose or broken. If yes, reconnect or replace the
cable accordingly;
3.
3. If the error remains after step 1 and 2, replace the
touch screen control board;
4.
4. If the error still remains, replace the touch screen.
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