F8621A供应工控备件供应进口卡件模块
¥5000.00
Z7127/6217/C5供应工控备件供应进口卡件模块
¥5000.00
B5233-2供应工控备件供应进口卡件模块
¥5000.00
K9203供应工控备件供应进口卡件模块
¥5000.00
F7553供应工控备件供应进口卡件模块
¥5000.00
F7133供应工控备件供应进口卡件模块
¥5000.00
主营产品，备件供应，充足库存
Foxboro（福克斯波罗）：I/A Series系统，FBM全系列（现场输入/输出模块）
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、
数据通信及处理等。
Westinghouse（西屋）：1C31系列DCS系统、CPU、OVATION系统、WDPF系统、
WEStation系统备件。
Triconex（英维思）:冗余容错控制系统、基于三重模件冗余（TMR）结构的现代化的容错控制器。
EMERSON（艾默生）:模块、卡件、驱动器等各类备件。
LCD display does not display
Fault phenomenon one: after power on, LCD display screen appears "white screen" or "flower screen" phenomenon;
Fault analysis: according to the phenomenon of fault, eliminate the problem that the backlight can not be lit normally, the reason should be that there is no data input or LCD is not connected to the power supply. First, check if there is a problem with the power supply. The LCD input data RGB was measured by oscilloscope, and no abnormality was found. However, another input pin was found to have no signal. After further examination, it was confirmed to be Shift Clock signal.
Solution: Use multimeter to measure and find that the connection is not connected, and then power on the LCD display is normal.Fault phenomenon two: after the power, LCD display by the "flower screen" to "black screen", or by the "white screen" to "black screen";
Fault analysis: the reason why this fault occurs is that the LCD backlight has been lit normally, but there is no signal input, or the input signal is incorrect. This fault is usually due to the choice of LCD type jumper on the motherboard or display card is not set correctly, or due to some control leads caused by obstruction; In addition, the signal connection error will also send this kind of fault, but the probability of this situation is relatively low, unless there is a mismatch problem in the process of LCD connection;
Treatment scheme: as long as the maintenance personnel slightly check, you can determine the location of the fault, and then targeted for troubleshooting.
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