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7.1. Primary Latch Switch,
Secondary (Secondary Latch
Switch and Power Relay 1)
Interlocks.
1. Unplug the lead connectors to Power Relay 1 and verify
continuity of the power relay 1 1-2 terminals.
2. Unplug lead connectors to Primary Latch Switch and
Secondary Latch Switch.
3. Test the continuity of switches at door opened and closed
positions with ohm meter (low scale).
Normal continuity readings should be as follows.
7.2. Short Switch / Monitor Circuit
1. Unplug lead wires from H. V. Inverter primary terminals.
2. Connect test probes of ohm meter to the disconnected
leads which were connected to H. V. Inverter.
3. Test the continuity of short switch with door opened and
closed positions using lowest scale of the ohm meter.
Normal continuity readings should be as follows.
7.3. Magnetron (NEW H.V.)
Continuity checks can only indicate an open filament or a
shorted magnetron. To diagnose for an open filament or
shorted magnetron.
1. Isolate magnetron from the circuit by disconnecting the
leads.
2. A continuity check across magnetron filament terminals
should indicate one ohm or less.
3. A continuity check between each filament terminal and
magnetron case should read open.
7.4. Membrane key board
(Membrane switch assembly)
Check continuity between switch terminals, by tapping an
appropriate pad on the key board. The contacts assignment of
the respective pads on the key board is as shown in digital
programmer circuit.
7 COMPONENT TEST PROCEDURE
18
NN-V690P / NN-V690PS / NN-V680W / NN-V680WS
Содержание NN-V680W
Страница 3: ...20 INVERTER CIRCUIT 43 21 REF NO 35 INVERTER U 44 3 NN V690P NN V690PS NN V680W NN V680W ...
Страница 4: ...1 CONTROL PANEL 4 NN V690P NN V690PS NN V680W NN V680WS ...
Страница 5: ...2 OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE 5 NN V690P NN V690PS NN V680W NN V680W ...
Страница 6: ...6 NN V690P NN V690PS NN V680W NN V680WS ...
Страница 8: ...3 2 SCHEMATIC DIAGRAM XNE ZPE 8 NN V690P NN V690PS NN V680W NN V680WS ...
Страница 17: ...17 NN V690P NN V690PS NN V680W NN V680W ...
Страница 22: ...9 TROUBLESHOOTING GUIDE NEW H V 22 NN V690P NN V690PS NN V680W NN V680WS ...
Страница 23: ...23 NN V690P NN V690PS NN V680W NN V680W ...
Страница 27: ...10 HOW TO CHECK THE SEMICONDUCTORS USING AN OHM METER 27 NN V690P NN V690PS NN V680W NN V680W ...
Страница 30: ...12 EXPLODED VIEW AND PARTS LIST 30 NN V690P NN V690PS NN V680W NN V680WS ...
Страница 39: ...18 DIGITAL PROGRAMMER CIRCUIT SCHEMATIC DIAGRAM 39 NN V690P NN V690PS NN V680W NN V680W ...
Страница 40: ...40 NN V690P NN V690PS NN V680W NN V680WS ...
Страница 43: ...20 INVERTER CIRCUIT SCHEMATIC DIAGRAM 43 NN V690P NN V690PS NN V680W NN V680W ...