5-12
TROUBLE SHOOTING
WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF
THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE
MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.
CAUTIONS
1. Check grounding before checking for trouble.
2. Be careful of the high voltage circuit.
3. Discharge the high voltage capacitor. (See page 2-1)
4. When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire
from these parts and then check continuity with the AC plug removed. To do otherwise may result in a
false reading or damage to your meter.
5. Do not touch any part of the circuit on the PCB since static electric discharge may damage this control
panel.
Always touch yourself to ground while working on this panel to discharge any static charge built up in your
body. (Micom model only)
CONDITION
Microwave oven
does not work.
Inserting many plugs into one
outlet and using them at the
same time.
(blown fuse or breaker)
Microwave oven plug is not
inserted tightly.
Output power is too low.
Low AC input voltage.
Food temperature is too low.
Using metallic ware and
allowing it to touch the oven
wall.
Sparks occur.
Inconsistent intensity of
microwave by their
characteristics.
1. Use plastic wrap or lid.
2. Stir once or twice while
cooking soup, cocoa or
milk, etc.
Uneven cooking.
Ceramic ware trimmed in
gold or silver power is used.
Avoid using other electrical
appliances when you use the
microwave oven.
Insert microwave oven plug
securely.
Use the microwave oven at
adequate line voltage.
This may not be a defect.
It is possible that the food
should be cooked for a
longer time period.
Do not use metallic ware for
cooking except that noted in
the cooking guide.
Do not use any type of
cookware with metallic
trimming.
CAUSE
REMEDY
Summary of Contents for MH-1446SQP
Page 9: ...SCHEMATIC DIAGRAM 4 3 ...
Page 28: ...6 1 EXPLODED VIEW INTRODUCTION MODEL MH 1446SQP EV ...
Page 29: ...6 2 13213A 13552A 15006A 13581A 13536A 14026A 14970A 13720D 14890A DOOR PARTS EV ...
Page 30: ...6 3 23572A 24781M WTP018 268711 24510L 250201 24970A 23506A CONTROL PANEL PARTS EV ...
Page 32: ...6 5 43501A WSZ085 466001 466001 466003 43500A LATCH BOARD PARTS EV ...
Page 34: ...6 7 WTT021 63302A 63303A 56170D WSZ002 948502 65006B BASE PLATE PARTS EV ...
Page 35: ......