Service manual

16
R-1880LS/LST
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. CONVECTION PAD TOUCHED.
3. DESIRED TEMP. TOUCHED.
4. START PAD TOUCHED.
Figure O-3. Oven Schematic - Convection Cooking Condition (CONVEC, PREHEAT, BROIL, SLOW COOK)
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. MIX COOKING PAD TOUCHED.
3. DESIRED TEMP. TOUCHED.
4. COOKING TIME PROGRAMMED.
5. START PAD TOUCHED.
Figure O-4. Oven Schematic - Automatic Mix cooking Condition
NOTE: RY2 and RY3 will alternately close during cook cycle
3. Only certain modelsuse the absolute humiditysensor.
2. Terminal with projectionor opposite blue markon lamp socket
1. Circuits / Wirecolors subject to changewithout notice
NOTES:
must be connected toneutral wire.
4. Power transformer top(finish lead) terminal mustbe connected to thehot wire (RED)
RY10
RY9
RED
R
ED
YL
W
HOOD
B
LK
WHT
CUTOUTS
THERMAL
HOOD FAN
BLK
RED
BL
K
A3
CAPACITOR
B3
CONTROL UNIT
N.O.
D5
120VAC
60Hz
MOTOR
HOOD
B1
GND
D3
D1
STIRRER MO
T
O
R
G
RY
RED
GRN
TEMPERATURE
FUSE
MAGNETRON
F1
F2
F3
AH SENSOR
BLU
PPL
WHT
PNK
MONITOR
SWITCH
BLK
B
L
U
, G
RY
VOLTAGE
HIGH
CAPACITOR
MAGNETRON
HIGH
VOLTAGE
RECTIFIER
TRANSFORMER
POWER
WHT
BLK
NOISE
RESISTOR
BRN,PNK
BRN
D9
RY8
STM
RY3
RY2
RY2
COM.
RY1
DAMPER
SWITCH
I
N
T
E
RLOCK
RE
L
A
Y
PRI
MARY
XXX µF
MONITOR
FUSE (20A)
YLW
BRN
WHT
G
RY
WHT
Y
L
W
G
RY
W
H
T
NOISE
FILTER
(CONV. SIDE)
BLU
G
RY
THIRD DOOR
SWITCH
PNK
ORG
ORG
RED
YLW
HOOD
LAMP
BRN
GRY
HL
HL
C1
C2
C3
R
ED
R
ED
ORG
B5
G
R
Y
O
RG
YLW
FM
DM
DAM
PER
MOTO
R
C7
BLU
C5
ORG
OR
G
F
A
N MOT
O
R
PPL
RY7RY4RY5
RY6
A1
WHT
C3
BLK,BRN
T
U
R
N
TABL
E
MOTO
R
TTM
CM
CON
V
ECT
I
ON
OL
B
LK
ORG
O
VE
N
LAM
P
GR
Y
WHT
BRN
Y
LW
O
RG
W
HT
N.O.
RY1
COM
RY3
N.O.
RY1
COM
RY2
OR
G
P
P
L
B
R
N
P
P
L
RY3
HEATIN
G
EL
E
M
EN
T
B
L
K
G
R
N
R
E
D
PNK
B
L
K
B
R
N
W
H
T
E4
E3
E6
E5
E2
E1
THERMISTOR
DOOR
SENSING
SWITCH
G
RN
B
LK
B
LK
,
B
R
N
RY11
D7
SWITCH
INTERLOCK
YLW
BLK
ORG
SECONDARY
C1
LVT
GRY
5. Fan Motor andTurntable Motor contain aspark quencher circuit (C=0.1uf/ R=120ohm 1/4W).
C
R
M
O
T
O
R
C
R
3. Only certain modelsuse the absolute humiditysensor.
2. Terminal with projectionor opposite blue markon lamp socket
1. Circuits / Wirecolors subject to changewithout notice
NOTES:
must be connected toneutral wire.
4. Power transformer top(finish lead) terminal mustbe connected to thehot wire (RED)
RY10
RY9
RED
R
ED
YL
W
HOOD
B
LK
WHT
CUTOUTS
THERMAL
HOOD FAN
BLK
RED
BL
K
A3
CAPACITOR
B3
CONTROL UNIT
N.O.
D5
120VAC
60Hz
MOTOR
HOOD
B1
GND
D3
D1
STIRRER MO
T
O
R
G
RY
RED
GRN
TEMPERATURE
FUSE
MAGNETRON
F1
F2
F3
AH SENSOR
BLU
PPL
WHT
PNK
MONITOR
SWITCH
BLK
B
L
U
, G
RY
VOLTAGE
HIGH
CAPACITOR
MAGNETRON
HIGH
VOLTAGE
RECTIFIER
TRANSFORMER
POWER
WHT
BLK
NOISE
RESISTOR
BRN,PNK
BRN
D9
RY8
STM
RY3
RY2
RY2
COM.
RY1
DAMPER
SWITCH
I
N
T
E
RLOCK
RE
L
A
Y
PRI
MARY
XXX µF
MONITOR
FUSE (20A)
YLW
BRN
WHT
G
RY
WHT
Y
L
W
G
RY
W
H
T
NOISE
FILTER
(CONV. SIDE)
BLU
G
RY
THIRD DOOR
SWITCH
PNK
ORG
ORG
RED
YLW
HOOD
LAMP
BRN
GRY
HL
HL
C1
C2
C3
R
ED
R
ED
ORG
B5
G
R
Y
O
RG
YLW
FM
DM
DAM
PER
MOTO
R
C7
BLU
C5
ORG
OR
G
F
A
N MOT
O
R
PPL
RY7RY4RY5
RY6
A1
WHT
C3
BLK,BRN
T
U
R
N
TABL
E
MOTO
R
TTM
CM
CON
V
ECT
I
ON
OL
B
LK
ORG
O
VE
N
LAM
P
GR
Y
WHT
BRN
Y
LW
O
RG
W
HT
N.O.
RY1
COM
RY3
N.O.
RY1
COM
RY2
OR
G
P
P
L
B
R
N
P
P
L
RY3
HEATIN
G
EL
E
M
EN
T
B
L
K
G
R
N
R
E
D
PNK
B
L
K
B
R
N
W
H
T
E4
E3
E6
E5
E2
E1
THERMISTOR
DOOR
SENSING
SWITCH
G
RN
B
LK
B
LK
,
B
R
N
RY11
D7
SWITCH
INTERLOCK
YLW
BLK
ORG
SECONDARY
C1
LVT
GRY
5. Fan Motor andTurntable Motor contain aspark quencher circuit (C=0.1uf/ R=120ohm 1/4W).
C
R
M
O
T
O
R
C
R