Measurements And Adjustments; Adjustment Of Hinge And Hook; Measurement Of Microwave Output - Panasonic NE-1878BPQ Service Manual

8 Measurements and Adjustments

8.1.

Adjustment of hinge and hook

When the components related to Door and door hook U are dis-
assembled/assembled or replaced, check the operation of each
switch.
Please confirm that the gap between the switch housing
and switch actuator levers is no more than 1.0 mm when
the door is closed.
• When operation failure occurs in door switch, door signal
switch, or short switch, perform adjustment as shown below.
1. Hinge adjustment
Close the door to tightly attach to the oven front surface,
and fasten the hinge attachment screws.
Door hook U adjustment
2.
a. Close the door and loosen the attachment screws of
door hook U and move the door hook U backward
until it stops and then fasten the screws
b. Check the door open/close and the operation of each
switch.
8.2. Measurement of microwave
output
The output power of magnetron can be determined by perform-
ing IEC standard test procedures. However, due to the com-
plexity of IEC test procedures, it is recommended to test the
magnetron using the simple method outlined below.
Necessary Equipmet:
* 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 accurate as possible.
(A) Fill the beaker with exactly one liter of tap water. Stir the
water using the thermometer and record the beaker's tem-
perature (recorded as T1).
(B) Place the beaker on the center of glass cook plate. Set
the oven for High power and heat it for exactly one minute.
(C) Stir the water again and read the temperature of the
beaker (recorded as T2).
(D) The normal temperature rise (T2-T1) at High power
position for each model is as shown in table.
TABLE(1 ℓ - 1min.test)
RATED OUTPUT
1800W (IEC-705)
37
TEMPERATURE RISE
Min. 16.0 °C