Service manual
45
(TROUBLE 2) Digital readout display does not show programming, even if the membrane keyboard is
programmed by touching proper pads.
MEMBRANE KEYBOARD CHECK PROCEDURE
1. Check the pad termination and PCB Connector order. (KOR-971M, KOR-971Q)
Condition Check Result Cause Remedy
Replace
control box
sub-
assembly.
Replace the
membrane
keyboard.
Display does not
show programming at all,
even if keyboard is
touched.
Check each pad for
continuity of the
membrane keyboard for
the following keyboard
check procedure.
Normal
Malfunction of
touch control
circuitry of control
box sub-assembly.
Abnormal
Malfunction of the
membrane
keyboard.
NOTE : Before following the particular steps listed above in the trouble shooting guide for the membrane keyboard,
failure, please check for the continuity of each wire-harness between the membrane keyboard and control
box assembly.
A
B
C
D
E
F
G
H
I
J
K
PAD Termination
1
2
3
4
5
6
7
8
9
10
11
PCB Connector
STAGE DEFROST AUTO
START
1 2 WEIGHT TIME
LOCK NO CUPS g
A
u
t
o
c
o
o
k
A
u
t
o
d
e
f
.
1. Baked Potato
2, Fresh Vegetable
3. Soup
4. Fish Fillets
5. Meat Loaf
Menu
Weight
muffin
beverage
dinner
plate
Clock/
A.Start
frozen
pizza
S
p
e
e
d
y
c
o
o
k
m
o
r
e
l
e
s
s
1 2 3
4 5 6
7 8
0
9
Stop/Clear Start
Feeding Bottle
Power
Fig. 10
STAGE DEFROST AUTO
START
1 2 WEIGHT TIME
LOCK NO CUPS g
STAGE DEFROST AUTO
START
1 2 WEIGHT TIME
LOCK NO CUPS g
A
u
t
o
c
o
o
k
A
u
t
o
d
e
f
.
1. Baked Potato
2, Fish Vegetable
3. Soup
4. Fish Fillets
5. Meat Loaf
Menu
Weight
muffin
beverage
dinner
plate
Clock/
A.Start
frozen
pizza
S
p
e
e
d
y
c
o
o
k
m
o
r
e
l
e
s
s
1 2 3
4 5 6
7 8
0
9
Stop/Clear Start
Feeding Bottle
Power
MICROWAVE OVEN RANGE
KOR-971Q
Beverage
Dinner
plate
Frozen
Pizza
Soup
Muffin
Baked
potato
0
54 6
21 3
87 9
Fresh
Vegetable
Stop/Clear Start
m
o
r
e
l
e
s
s
A
u
t
o
d
e
f
.
S
p
e
e
d
y
c
o
o
k
Clock/
A.Start
Power
Feeding Bottle
KOR-971M KOR-971Q