Display Failures; Touch Screen Failures - EDAN F9 Service Manual

F9 Fetal & maternal Monitor Service Manual

8.2 Display Failures

Phenomenon
The LCD has no display.
LCD displays
characters.

8.3 Touch Screen Failures

Phenomenon
The touch screen is not
functioning.
The touch position invalid.
Possible Cause
The LCD related cable(s) is
(are) disconnected.
LCD defective.
Power
defective.
LCD backlight
defective.
Main
defective.
improper
LCD defective.
Possible Cause
The touch
disabled.
The touch screen related
cable(s)
disconnected.
The touch
damaged.
The touch screen is not
calibrated.
Solution
Check that the LCD related cables
between the main control board,
power inverter board and the LCD are
well connected. Check that the LCD
backlight cable is well connected.
Replace the LCD.
inverter board
Replace the power inverter board.
board
Replace the LCD backlight board.
control board
Replace the main control board.
Replace the LCD.
Solution
screen is Check if the touch screen is disabled
in the system setup. If yes, enable it.
Check that the touch screen related
cables between the main control
is (are)
board, touch screen controlling board
and the touch screen are well
connected.
screen is
Replace the touch screen.
Calibrate the touch screen using
procedures described in section 5.6
To Calibrate Touch Screen.
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Troubleshooting