Unitec POS4000/V2-Wash Select II - Manual (Page 45)

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Document Number: POS4007 19
Document Title: POS4000/V2 WSII Operations Manual
Table 12. Key Continuity Check
Keys Connector Pins
Key 1 Pins 1 & 7
Key 2 Pins 1 & 8
Key 3 Pins 1 & 9
Key 4 Pins 2 & 7
Key 5 Pins 2 & 8
Key 6 Pins 2 & 9
Key 7 Pins 3 & 7
Key 8 Pins 3 & 8
Key 9 Pins 3 & 9
Key * or P Pins 4 & 7
Key 0 Pins 4 & 8
Key # or A Pins 4 & 9
If any of these continuity checks fail, the keypad should be replaced.
If one row or column of customer keys fails, make keypad continuity check as described above
first. If this passes, reconnect the keypad and check the wire connections between interface
board and keypad. Make sure there are no broken wires and make sure all connectors are
correctly mated. If the keypad test is OK and the wire connections are good, replace the
interface board.