Esco Ascent max, User And Service Manual

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Problem 6: Blank LCD
Cause Corrective Action
Connection
problem
•
Turn off the cabinet.
•
See Component Layout to locate the main board.
•
Check whether LCD FRC (Flat Ribbon Cable) has been inserted properly into its
socket on the main board. See Figure 6 ‐ 1 below.
Contrast problem
•
Turn off the cabinet.
•
Adjust the potentiometer on main board by rotating the top metal part using flat
screw driver to achieve the best LCD contrast. Counter clock ‐ wise direction will
increase the contrast. See Figure 6 ‐ 2.
•
If the LCD remains blank, replace it.
Defective LCD
•
Connect a new LCD to the LCD port on main board (See Component Layout).
•
If the new LCD functions properly, means the old one is Defective. Replace it.
•
If the new LCD is not working, check its cable and connector interface to the main
board. If all connections okay but LCD doesn't function, replace the main board.
Problem 7: Inoperative buttons
Cause Corrective Action
Connection
problem
•
Turn off the cabinet.
•
See Component Layout to locate the main board.
•
See figure 7 ‐ 1 and ensure FRC cable going to interface board is connected properly.
The triangle sign on the female connector indicates PIN number 1.
•
Interface board and membrane/keypad are located behind the blue panel,
underneath the light metal deflector.
•
With the cabinet still turned ‐ off, uninstall the fluorescent light and metal deflector
to access the interface board. See Figure 7 ‐ 3.
•
See Figure 7 ‐ 2 for the proper connection between main board, interface board, and
membrane/keypad.
•
Check if the green plastic cable from the membrane has been inserted properly into
the interface board. Follow Figure 7 ‐ 4 for the correct orientation of connector.
Figure 6 ‐ 1
Figure 6 ‐ 2