Sharp R-1880LS Service Manual page 15

SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
. CLOCK APPEARS ON DISPLAY.
MONITOR
RED
FUSE (20A)
YLW
BLK
BRN,PNK
RED HOOD FAN
GRN
BLK THERMAL
CUTOUTS
YLW
BRN PNK
120VAC
GND
(CONV. SIDE)
NOISE
60Hz
RESISTOR
BLU
PPL
C2
C1
C3
HOOD
MOTOR
NOISE
FILTER
NOTES:
1. Circuits / Wire colors subject to change without notice
2. Terminal with projection or opposite blue mark on lamp socket
must be connected to neutral wire.
3. Only certain models use the absolute humidity sensor.
4. Power transformer top (finish lead) terminal must be connected to the hot wire (RED)
5. Fan Motor and Turntable Motor contain a spark quencher circuit (C=0.1uf / R=120ohm 1/4W).
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
. COOKING TIME PROGRAMMED.
3. START PAD TOUCHED.
MONITOR
RED
FUSE (20A)
YLW
BLK
BRN,PNK
RED HOOD FAN
GRN
BLK THERMAL
CUTOUTS
YLW
BRN
120VAC
GND
(CONV. SIDE)
60Hz NOISE
RESISTOR
C2
C1
C3
NOISE
FILTER
NOTES:
1. Circuits / Wire colors subject to change without notice
2. Terminal with projection or opposite blue mark on lamp socket
must be connected to neutral wire.
3. Only certain models use the absolute humidity sensor.
4. Power transformer top (finish lead) terminal must be connected to the hot wire (RED)
5. Fan Motor and Turntable Motor contain a spark quencher circuit (C=0.1uf / R=120ohm 1/4W).
MAGNETRON
TEMPERATURE
FUSE
ORG
RED
ORG
ORG
B5
CONTROL UNIT
D9
C
DM FM
BRN R
D5 RY9
RY11
RY10
C7 C5
D1
D3
RY6
RY5
HOOD
RY8
CAPACITOR
B1 B3 A3
D7
LVT
HOOD
LAMP
HL HL
C1
Figure O-1. Oven Schematic - Off Condition
MAGNETRON
TEMPERATURE
FUSE
ORG
RED
ORG
B5
CONTROL UNIT
D9
FM
DM
BRN
D5
RY9
PNK
RY11
RY10
D1 C7 C5
BLU
D3
RY6
PPL
HOOD
RY8
CAPACITOR
B1
B3 A3 D7
HOOD LVT
MOTOR
HOOD
LAMP
HL HL
C1
Figure O-2. Oven Schematic - Microwave Cooking Condition
SCHEMATIC DIAGRAM (DOOR CLOSED COOK OFF CONDITION)
SECONDARY
INTERLOCK
SWITCH
BLK
YLW
BLK,BRN
OL
CM
C
TTM DOOR
R
SENSING
THERMISTOR
SWITCH
N.O. COM N.O.
COM
E1
C3 A1 RY1 RY2 E2
RY3 RY3
RY4 RY7 RY1
RY2
RY3
COM. N.O.
RY2
RY1
WHT
WHT
SCHEMATIC DIAGRAM
SECONDARY
INTERLOCK
SWITCH
BLK
ORG
YLW
BLK,BRN
OL
CM
C
C
TTM
DOOR
R R
SENSING
SWITCH
N.O. COM N.O.
COM
C3 A1 E1 E2
RY1 RY2
RY3 RY3
RY5 RY4 RY7 RY1
RY2
RY3
N.O.
COM.
RY2
RY1
15
THIRD DOOR
SWITCH
MONITOR
SWITCH
DAMPER
SWITCH
STM
POWER
TRANSFORMER
E3 E4
E5 E6
F3
F1 F2
HIGH
VOLTAGE
CAPACITOR
XXX µF
AH SENSOR
HIGH
VOLTAGE
RECTIFIER
CONDITION
THIRD DOOR
SWITCH
MONITOR
SWITCH
DAMPER
THERMISTOR SWITCH
STM
POWER
TRANSFORMER
E6 E3 E4
E5
F1 F2 F3
HIGH
VOLTAGE
CAPACITOR
XXX µF
AH SENSOR
HIGH
VOLTAGE
RECTIFIER
WHT
WHT
R-1880LS/LST