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Removal of Positive Lock connector
The positive lock connector is a specially designed loose free
connector and you will find this connector in many lead wire
connections. To remove this connector, pull the lead wire by
pressing an extruded lever in the center of receptacle terminal
as shown.
18.2. Replacement of power supply
circuit board
NOTE: Be sure to ground any static electric charge built up
on your body, before handling the power supply P. C. B.
and D. P. C..
1. Disconnect all lead wires from power supply circuit board.
2. Remove the power supply P. C. B. together with its
mounting bracket by first removing the 2 bracket holding
screws.
3. The power supply P. C. B. can be separated from mounting
bracket by removing the 2 L. V. T. holding screws and
unfastening the plastic clips.
18.3. Replacement of digital
programmer circuit board
1. Remove grounding screw for membrane switch and D. P.
C. ground.
2. Remove 3 screws holding control panel assembly to detach
it from main unit then remove connectors.
3. Remove 2 screws holding the D. P. C. board and while
pushing back on 2 plastic holding clips, remove the board.
NOTE: Please use care in handling the power supply P. C.
B. and D. P. C. board to avoid damage.
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NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258