LiftMaster Icon 26 ICON26 Manual - Page 38

Display Controller Board

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DISPLAY CONTROLLER BOARD 10 78 1 Display Contrast 2 Adjustment 3 Power Input OVRVOvervoltage Battery BPAoTwTer BUSY 4 5 Power POWER 11 9 6 1 12 VAC Input 2 12 VAC Output - (Not used) 3 Battery - (On/Off switch input) 4 Input/Output 5 Comm Port - (Connected to processors parallel port) 6 Sensor Input 7 Large Display Contrast Adjustment - (Clockwise-Lighter Contrast, Counterclockwise-Darker Contrast) LED Indicators 8 Batt ON: System is working using battery power. OFF: System is working using transformer power. 9 Power ON: System has power (Transformer, Battery). OFF: System has no power (Transformer, Battery). 10 OVRV ON: Incorrect transformer voltage (Overvoltage). OFF: Proper transformer voltage (Transformer plugged in). 11 Busy ON: LED flashes when receiving data from processor. OFF: No data being received from processor. Icon Page 37

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DISPLAY CONTROLLER BOARD
37
Icon Page
BATT
OVRV
BUSY
POWER
12 VAC Input
12 VAC Output - (
Not used)
Battery - (
On/Off switch input)
Input/Output
Comm Port -
(Connected to processors parallel port)
Sensor Input
Large Display Contrast Adjustment -
(Clockwise-Lighter Contrast, Counterclockwise-Darker Contrast)
6
1
2
3
4
5
6
7
5
3
2
1
4
Batt
Power
OVRV
Busy
ON:
System is working using battery power.
OFF:
System is working using transformer power.
ON:
System has power (Transformer, Battery).
OFF:
System has no power (Transformer, Battery).
ON:
Incorrect transformer voltage (Overvoltage).
OFF:
Proper transformer voltage (Transformer plugged in).
ON:
LED flashes when receiving data from processor.
OFF:
No data being received from processor.
LED Indicators
8
9
10
11
Display Contrast
Adjustment
Battery
Power
Power Input
Overvoltage
Power
10
11
9
7
8