Fig.7
Note:
A small brass screw on the resistor. Rotating the knob clockwise will brighten the display.
Rotating the knob anti-clockwise will darken the display.
Remove the screws as Fig.8, and then remove the CPU control board.
Fig.8
Remove the screws and get the LCD and LCD control board which are combined into
one part. As Fig.9 and Fig.10
Fig.9 Fig. 10
2.3 Key Pad replacement
Remove the screws as Fig.8 above, and then remove all screws as Fig. 11.
LCD contrast
adjustable screw
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