Measurements And Adjustments; Adjustment Of Primary Latch Switch, Secondary Latch; Switch And Short Switch; Measurement Of Microwave Output - Panasonic NN-S335BF Service Manual

9 MEASUREMENTS AND ADJUSTMENTS

WARNING
1. For continued protection against radiation hazard, replace only with
identical replacment parts. (For touch models part No. J61424T00AP
Type No. V-15G-3C25 for
J61414T00AP, Type No. D3V-16G-3C25 for Secondary latch switch
and Part No.J61784T00AP, Type No. D3V-1G-2C25 for short switch)
2. When the 15 Amp. fuse is blown due to the operation of short
switch, you must replace Primary latch switch and short switch. Also
replace power relay B (Part. No. AEGG5G1A18, Type No. G5G-
1A12VDC) when the continuity check reads shorted contacts (1--2).
Then follow the adjustment procedures below.
3. Interlock swich replacement -- In replacing faulty switches, be sure
mounting tabs are not bent, broken or otherwise deficient in their
ability to hold the switches.
4. Refer to schematic diagram to ensure proper connection.
9.1. Adjustment of Primary latch
switch, Secondary latch

switch and Short switch.

1. Mount the Primary latch swith, the Secondary latch switch
and the Short switch to the door hook assembly as shown
in ILL.
NOTE:
No specific individual
installation of the Primary latch switch, Secondary
latch switch or Short switch to the door hook are
required.
2. When mounting the door hook assembly to the oven
assembly, adjust the door hook assembly by moving it in
the direction of the arrows in the illustration so that the oven
door will not have any play in it. Check for play in the door
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 and check the coninuity of the
monitor circuit and all latch switches again by following the
component test procedures.
Primary latch switch Part
adjustments during
No.
9.2. Measurement of microwave
output
The output power of the magnetron can be determined by
performing IEC standard test procedures. However, due to the
complexity of 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 stopwatch
NOTE:
Check the line voltage under load.Low voltage will
lower the magnetron output. Take the temperature
readings and heating time as accurately as possible.
1. Fill the beaker with exactly one liter of tap water. Stir the
water using the thermometer and record the water's
temperature. (recorded as T1).
2. Place the beaker on the center of glass tray.
Set the oven for High power and heat it for exactly one
minute.
3. Stir the water again and read the temperature of the water.
(recorded as T2).
4. The normal temperature rise at High power level for each
model is as shown in table.
RATED OUTPUT
800W
15
NN-S335BF / NN-S335WF / NN-S335WM /
TABLE (1L-1min.test)
TEMPERATURE RISE
Min.12.6°F(7.0°C)