6.3. Digital programmer circuit
(DPC) and membrane key
board.
NOTE: Be sure to ground any static electric charge built up
on your body, before handling the DPC.
1. Disconnect all connectors from D.P.C.
2. Remove 2 screws holding escutcheon base and slide the
escutcheon base upward slightly with door closed.
3. Release CN5 connector's lock of DPC by pushing both
levers to inside and pull them upward, and remove flat
cable of membrane key board.
4. Remove 3 screws holding DPC.
To replace membrane key board
5. Remove escutcheon bracket from escutcheon base by
freeing 5 catch hooks on the escutcheon base.
6. On some models, the key board is not replaced with
individual parts. Instead, the entire escutcheon base
assembly must be replaced. Refer to parts list.
14
NN-V690P / NN-V690PS / NN-V680W / NN-V680WS
Summary of Contents for NN-V680W
Page 3: ...20 INVERTER CIRCUIT 43 21 REF NO 35 INVERTER U 44 3 NN V690P NN V690PS NN V680W NN V680W ...
Page 4: ...1 CONTROL PANEL 4 NN V690P NN V690PS NN V680W NN V680WS ...
Page 6: ...6 NN V690P NN V690PS NN V680W NN V680WS ...
Page 8: ...3 2 SCHEMATIC DIAGRAM XNE ZPE 8 NN V690P NN V690PS NN V680W NN V680WS ...
Page 17: ...17 NN V690P NN V690PS NN V680W NN V680W ...
Page 22: ...9 TROUBLESHOOTING GUIDE NEW H V 22 NN V690P NN V690PS NN V680W NN V680WS ...
Page 23: ...23 NN V690P NN V690PS NN V680W NN V680W ...
Page 27: ...10 HOW TO CHECK THE SEMICONDUCTORS USING AN OHM METER 27 NN V690P NN V690PS NN V680W NN V680W ...
Page 30: ...12 EXPLODED VIEW AND PARTS LIST 30 NN V690P NN V690PS NN V680W NN V680WS ...
Page 39: ...18 DIGITAL PROGRAMMER CIRCUIT SCHEMATIC DIAGRAM 39 NN V690P NN V690PS NN V680W NN V680W ...
Page 40: ...40 NN V690P NN V690PS NN V680W NN V680WS ...
Page 43: ...20 INVERTER CIRCUIT SCHEMATIC DIAGRAM 43 NN V690P NN V690PS NN V680W NN V680W ...
