Panasonic NN-A890WB, Service Manual

Page: 51 / 68

mounting tabs are not bent, broken or otherwise deficient in their
ability to hold the switches.
- Refer to the schematic and wiring diagram to ensure proper
connection
15.1. Installation of primary latch switch, secondary latch switch and
short switch.
1. When mounting the primary latch switch, secondary latch switch
and short switch to the door hook assembly. Follow the
instructions in figure 1.
NOTE: No specific adjustment during the insulation of each
switch into the door hook is necessary.
2. When mounting the door hook assembly to the oven assembly,
adjust the door hook assembly by moving it in the direction of the
arrow in figure 1. Ensuring the door does not have any play in it.
Check for play by pulling the door assembly. Make sure that the
latch keys move smoothly after adjustment is completed.
Completely tighten the screws holding the door hook assembly to
the oven assembly.
3. Reconnect the short switch, primary switch and secondary latch
switches and check the continuity of the monitor circuit and latch
switches by following the component test procedures on page.
15.2. Measurement of microwave output
The output power of the magnetron can be determined by performing the IEC standard test.
However, due to the complexity of the IEC test procedures, it is recommended to test the
magnetron using the simple method outlined below.
Necessary equipment:
- 1 liter beaker
- Glass thermometer
- Wrist watch or stop watch
NOTE: Check the line voltage under load. Low voltage will lower the magnetron output. Take the
temperature readings and heating time as accurate as possible.
1. Fill the beaker with exactly one liter of tap water. Stir the water
using the thermometer and record the beakers temperature
(Recorded as T1)
2. Place the beaker on the center of the glass cook plate.
3. Stir the water again and read the temperature of the beaker
51