5-15
(TROUBLE 3) Display shows all figures set, but oven does not start cooking while
desired program times are set and START pad is touched.
(TROUBLE 4) Oven seems to be operation but output power is low.
CONDITION
CHECK
RESULT
CAUSE
REMEDY
1.Setting time does
not count down
when touching
START pad.
2. Fan motor or
oven lamp
do not turn
on.
No continuity.
continuity.
No continuity.
Continuity.
Check the con-
nection between
connector and
P.C.B assembly.
Defective
secondary switch.
Replace
secondary switch.
Defective P.C.B
assembly.
Replace P.C.B
assembly.
Check continuity
of secondary
switch (with
door closed).
Check fan motor.
Check oven lamp.
Abnormal.
Abnormal.
Normal.
Defective fan
motor.
Defective oven
lamp.
Replace fan
motor.
Replace oven
lamp.
Loose connection.
Connection then
tightly.
CONDITION
CHECK
RESULT
CAUSE
REMEDY
Output is low.
Lower than 90% of
rating voltage.
Normal.
Normal.
Abnormal.
Abnormal.
Measure the
output power.
Disconnect the
wire leads from
relay 2 and check
on and off time
with multitester.
Defective P.C.B
assembly.
Replace P.C.B
assembly.
Decrease in power
source voltage
with load.
Suggest customer
contact local
electric power
utility co. or
qualified
electrician.
Check the
power source
voltage.
Defective
magnetron.
Replace
magnetron.
NOTE: Refer to Page 5-3 for measuring of microwave power output.
Содержание NN-CT641M
Страница 9: ...4 3 SCHEMATIC DIAGRAM 15A Ry 1 Ry 2 Ry 3 Ry 4 Ry 5 RY3 RY4 RY5 RY1 RY2 ...
Страница 31: ...6 2 DOOR PARTS 1 2 3 5 6 7 8 9 4 ...
Страница 32: ...6 3 CONTROL PANEL PARTS 10 11 12 13 ...
Страница 33: ...INTERIOR PARTS 6 4 18 19 20 21 22 23 24 25 26 31 32 33 28 30 71 72 65 64 29 27 ...
Страница 34: ...6 5 36 LATCH BOARD PARTS 41 34 35 42 37 37 38 39 ...
Страница 35: ...6 6 OVEN CAVITY PARTS 44 45 46 47 48 49 50 51 52 R00 43 ...
Страница 36: ...6 7 BASE PLATE PARTS 53 54 55 56 57 59 60 61 ...
Страница 42: ...P NO Printed in China 11 April 20 ...
