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Model
R-8000GK
Pages
44
Size
1.16 MB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven
File
r-8000gk.pdf
Date
PREV: Sharp R-7V10 (serv.man6) Service Manual / Technical Bulletin

Sharp R-8000GK Service Manual ▷ View online

R-8000GK
29
Figure O-2. Oven Schematic-Microwave Cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. COOKING TIME ENTERED.
4. "START" KEY TOUCHED.
Figure O-1. Oven Schematic-OFF Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2.    
.
           APPEARS ON DISPLAY.
NOTE: "
" indicates components with potential above 250V.
TOP HEATER
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
MONITOR SWITCH
OVEN LAMP
CONTROL UNIT
A8
A6
A4
A3 A2
E1
A1 D9
THERMISTOR
DOOR SENSING SWITCH 
PRIMARY 
INTERLOCK RELAY
CONTROL SWITCH
JET MOTOR
TURNTABLE MOTOR
TOP HEATIMG ELEMENT
SIDE HEATIMG ELEMENT
MAGNETRON
HIGH VOLTAGE TRANSFORMER WITH 
160˚C THERMOSTAT IN PRIMARY WINDING
H.V. RECTIFIER
CAPACITOR
1.07
µ
 
AC 2300V
RY5
RY6
SECONDARY INTERLOCK SWITCH 
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
SOLID-STATE RELAY
SOLID-STATE RELAY
PRIMARY 
INTERLOCK RELAY
230 - 240V ~ 50Hz
COM.
COM.
COM.
C1
N.O.
N.O.
MAGNETRON 
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
B1
B2
E3
C2
C3
B3
B4
D7
D1
D5
D3
FM
OL
TTM
FAN MOTOR
RY1
RY2
FM
RY3
JM
H.V. USE 
0.75A 
COM.
FUSE 
F10A
HEATER
TEMPERATURE
FUSE 150˚C
N
L
LINE CROSS CAPACITOR   1.0
µ
/AC275V 
NOISE SUPPRESSION COIL 
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
RESISTOR   10M
Ω
 1/2W
RED
WHT
RESISTOR   680K
Ω
 1/2W
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
JET MOTOR CAPACITOR
NOISE FILTER
TOP HEATER
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
MONITOR SWITCH
OVEN LAMP
CONTROL UNIT
A8
A6
A4
A3 A2
E1
A1 D9
THERMISTOR
DOOR SENSING SWITCH 
PRIMARY 
INTERLOCK RELAY
CONTROL SWITCH
JET MOTOR
TURNTABLE MOTOR
TOP HEATIMG ELEMENT
SIDE HEATIMG ELEMENT
MAGNETRON
HIGH VOLTAGE TRANSFORMER WITH 
160˚C THERMOSTAT IN PRIMARY WINDING
H.V. RECTIFIER
CAPACITOR
1.07
µ
 
AC 2300V
RY5
RY6
SECONDARY INTERLOCK SWITCH 
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
SOLID-STATE RELAY
SOLID-STATE RELAY
PRIMARY 
INTERLOCK RELAY
230 - 240V ~ 50Hz
COM.
COM.
COM.
C1
N.O.
N.O.
MAGNETRON 
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
B1
B2
E3
C2
C3
B3
B4
D7
D1
D5
D3
FM
OL
TTM
FAN MOTOR
RY1
RY2
FM
RY3
JM
H.V. USE 
0.75A 
COM.
FUSE 
F10A
HEATER
TEMPERATURE
FUSE 150˚C
N
L
LINE CROSS CAPACITOR   1.0
µ
/AC275V 
NOISE SUPPRESSION COIL 
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
RESISTOR   10M
Ω
 1/2W
RED
WHT
RESISTOR   680K
Ω
 1/2W
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
JET MOTOR CAPACITOR
NOISE FILTER
R-8000GK
30
NOTE: "
" indicates components with potential above 250V.
Figure O-3. Oven Schematic-Oven, Preheat (Conv. mode), Speed convection (SC-1) Cooking Condition
Figure O-4. Oven Schematic-Speed Grill (SG-1), Preheat (Jet mode) Cooking Condition
SCHEMATIC (OVEN)
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. COOKING TIME ENTERED.
4. OVEN TEMPERATURE SELECTED.
5. "START" KEY TOUCHED.
SCHEMATIC (SPEED GRILL SG-1)
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. COOKING TIME ENTERED.
4. "SPEED GRILL" KEY TOUCHED ONCE.
5. OVEN TEMPERATURE SELECTED.
6. "START" KEY TOUCHED.
NOTE: When the Speed Grill is programmed  after preheat in multiple sequence cooking,
the oven is preheated with Jet mode. This is "Preheat (Jer Mode).
SCHEMATIC (SPEED CONVECTION SC-1)
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. COOKING TIME ENTERED.
4. "SPEED CONV." KEY TOUCHED ONCE.
5. OVEN TEMPERATURE SELECTED.
6. "START" KEY TOUCHED.
SCHEMATIC (PREHEAT)
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. OVEN TEMPERATURE SELECTED.
4. "START" KEY TOUCHED.
TOP HEATER
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
MONITOR SWITCH
OVEN LAMP
CONTROL UNIT
A8
A6
A4
A3 A2
E1
A1 D9
THERMISTOR
DOOR SENSING SWITCH 
PRIMARY 
INTERLOCK RELAY
CONTROL SWITCH
JET MOTOR
TURNTABLE MOTOR
TOP HEATIMG ELEMENT
SIDE HEATIMG ELEMENT
MAGNETRON
HIGH VOLTAGE TRANSFORMER WITH 
160˚C THERMOSTAT IN PRIMARY WINDING
H.V. RECTIFIER
CAPACITOR
1.07
µ
 
AC 2300V
RY5
RY6
SECONDARY INTERLOCK SWITCH 
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
SOLID-STATE RELAY
SOLID-STATE RELAY
PRIMARY 
INTERLOCK RELAY
230 - 240V ~ 50Hz
COM.
COM.
COM.
C1
N.O.
N.O.
MAGNETRON 
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
B1
B2
E3
C2
C3
B3
B4
D7
D1
D5
D3
FM
OL
TTM
FAN MOTOR
RY1
RY2
FM
RY3
JM
H.V. USE 
0.75A 
COM.
FUSE 
F10A
HEATER
TEMPERATURE
FUSE 150˚C
N
L
LINE CROSS CAPACITOR   1.0
µ
/AC275V 
NOISE SUPPRESSION COIL 
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
RESISTOR   10M
Ω
 1/2W
RED
WHT
RESISTOR   680K
Ω
 1/2W
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
JET MOTOR CAPACITOR
NOISE FILTER
TOP HEATER
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
MONITOR SWITCH
OVEN LAMP
CONTROL UNIT
A8
A6
A4
A3 A2
E1
A1 D9
THERMISTOR
DOOR SENSING SWITCH 
PRIMARY 
INTERLOCK RELAY
CONTROL SWITCH
JET MOTOR
TURNTABLE MOTOR
TOP HEATIMG ELEMENT
SIDE HEATIMG ELEMENT
MAGNETRON
HIGH VOLTAGE TRANSFORMER WITH 
160˚C THERMOSTAT IN PRIMARY WINDING
H.V. RECTIFIER
CAPACITOR
1.07
µ
 
AC 2300V
RY5
RY6
SECONDARY INTERLOCK SWITCH 
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
SOLID-STATE RELAY
SOLID-STATE RELAY
PRIMARY 
INTERLOCK RELAY
230 - 240V ~ 50Hz
COM.
COM.
COM.
C1
N.O.
N.O.
MAGNETRON 
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
B1
B2
E3
C2
C3
B3
B4
D7
D1
D5
D3
FM
OL
TTM
FAN MOTOR
RY1
RY2
FM
RY3
JM
H.V. USE 
0.75A 
COM.
FUSE 
F10A
HEATER
TEMPERATURE
FUSE 150˚C
N
L
LINE CROSS CAPACITOR   1.0
µ
/AC275V 
NOISE SUPPRESSION COIL 
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
RESISTOR   10M
Ω
 1/2W
RED
WHT
RESISTOR   680K
Ω
 1/2W
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
JET MOTOR CAPACITOR
NOISE FILTER
R-8000GK
31
Figure O-5. Oven Schematic-Speed Grill (SG-2, SG-3) Cooking Condition
Figure O-6. Oven Schematic-Speed Convection (SC-2, SC-3) Cooking Condition
SCHEMATIC (SPEED GRILL SG-2, SG-3)
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. COOKING TIME ENTERED.
4. "SPEED GRILL" KEY TOUCHED TWICE (SG-2) OR 3 TIMES (SG-3).
5. OVEN TEMPERATURE SELECTED.
6. MICROWAVE POWR LEVEL SELECTED.
7. "START" KEY TOUCHED.
SCHEMATIC (SPEED CONVECTION SC-2, SC-3)
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. COOKING TIME ENTERED.
4. "SPEED CONV." KEY TOUCHED TWICE (SC-2) OR 3 TIMES (SC-3).
5. OVEN TEMPERATURE SELECTED.
6. MICROWAVE POWR LEVEL SELECTED.
7. "START" KEY TOUCHED.
TOP HEATER
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
MONITOR SWITCH
OVEN LAMP
CONTROL UNIT
A8
A6
A4
A3 A2
E1
A1 D9
THERMISTOR
DOOR SENSING SWITCH 
PRIMARY 
INTERLOCK RELAY
CONTROL SWITCH
JET MOTOR
TURNTABLE MOTOR
TOP HEATIMG ELEMENT
SIDE HEATIMG ELEMENT
MAGNETRON
HIGH VOLTAGE TRANSFORMER WITH 
160˚C THERMOSTAT IN PRIMARY WINDING
H.V. RECTIFIER
CAPACITOR
1.07
µ
 
AC 2300V
RY5
RY6
SECONDARY INTERLOCK SWITCH 
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
SOLID-STATE RELAY
SOLID-STATE RELAY
PRIMARY 
INTERLOCK RELAY
230 - 240V ~ 50Hz
COM.
COM.
COM.
C1
N.O.
N.O.
MAGNETRON 
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
B1
B2
E3
C2
C3
B3
B4
D7
D1
D5 D3
FM
OL
TTM
FAN MOTOR
RY1
RY2
FM
RY3
JM
H.V. USE 
0.75A 
COM.
FUSE 
F10A
HEATER
TEMPERATURE
FUSE 150˚C
N
L
LINE CROSS CAPACITOR   1.0
µ
/AC275V 
NOISE SUPPRESSION COIL 
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
RESISTOR   10M
Ω
 1/2W
RED
WHT
RESISTOR   680K
Ω
 1/2W
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
JET MOTOR CAPACITOR
NOISE FILTER
TOP HEATER
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
MONITOR SWITCH
OVEN LAMP
CONTROL UNIT
A8
A6
A4
A3 A2
E1
A1 D9
THERMISTOR
DOOR SENSING SWITCH 
PRIMARY 
INTERLOCK RELAY
CONTROL SWITCH
JET MOTOR
TURNTABLE MOTOR
TOP HEATIMG ELEMENT
SIDE HEATIMG ELEMENT
MAGNETRON
HIGH VOLTAGE TRANSFORMER WITH 
160˚C THERMOSTAT IN PRIMARY WINDING
H.V. RECTIFIER
CAPACITOR
1.07
µ
 
AC 2300V
RY5
RY6
SECONDARY INTERLOCK SWITCH 
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
SOLID-STATE RELAY
SOLID-STATE RELAY
PRIMARY 
INTERLOCK RELAY
230 - 240V ~ 50Hz
COM.
COM.
COM.
C1
N.O.
N.O.
MAGNETRON 
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
B1
B2
E3
C2
C3
B3
B4
D7
D1
D5
D3
FM
OL
TTM
FAN MOTOR
RY1
RY2
FM
RY3
JM
H.V. USE 
0.75A 
COM.
FUSE 
F10A
HEATER
TEMPERATURE
FUSE 150˚C
N
L
LINE CROSS CAPACITOR   1.0
µ
/AC275V 
NOISE SUPPRESSION COIL 
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
LINE BYPASS CAPACITOR 0.0047
µ
/AC250V
RESISTOR   10M
Ω
 1/2W
RED
WHT
RESISTOR   680K
Ω
 1/2W
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
JET MOTOR CAPACITOR
NOISE FILTER
R-8000GK
32
1
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
3
4
5
6
1
2
3
4
5
6
Figure S-1. Pictorial Diagram
TURNTABLE 
MOTOR
TOUCH CONTROL
TRANSFORMER
JET MOTOR
CAPACITOR
RY2
RY3
RY5
WH-A
CN-J
CN-H
RY2:
PRIMARY
INTERLOCK
RELAY
TOP HEATER
THERMAL
CUT-OUT
To POWER UNIT
From CPU UNIT
MAGNETRON TEMPERATURE
FUSE
GRY
WHT
CN-A
CN-B
N.O.
CN-B
CN-A
SECONDARY
INTERLOCK
SWITCH
HEATER
TEMPERATURE 
FUSE
CONTROL UNIT
(SWITCH UNIT)
CPU 
UNIT
HIGH VOLTAGE 
COMPONENTS
POWER UNIT
TOP 
HEATING
ELEMENT
MONITOR
SWITCH
JET MOTOR
THERMISTOR
POWER SUPPLY CORD
NOTE:
The grounding conductor of 
the power supply cord has 
been grounded by power 
supply cord fixing screw.  The 
screw must be kept allways 
tight.
GRN
GRN
 FUSE F10A
MAGNETRON
HIGH VOLTAGE
CAPACITOR
HIGH VOLTAGE
RECTIFIER
HIGH VOLTAGE 
TRANSFORMER
HIGH 
VOLTAGE 
FUSE
BLK
WHT
WHT
WHT
RED
O
R
G
R
E
D
R
E
D
R
E
D
B
L
K
R
E
D
B
L
K
O
R
G
R
E
D
R
E
D
G
R
N
R
E
D
B
L
K
O R G
DOOR
SENSING
SWITCH
3RD. LATCH
SWITCH
BRN
RED
COM.
COM.
N.O.
COM.
N.C.
BLK
ORG
RED
YLW
WHT
8
7
6
5
4
3
2
1
BLU
BRN
1
16
1
1
9
4
CN-E
1
3
CN-C
1
3
CN-G
COM.
CN-D FUSE1
1
3
2
1
8
GRY
WHT
COM.
N.C.
BRN
RED
GRY
WHT
BLK
G
R
Y
G
R
Y
O
R
G
CN-C 
CN-D
BLU
GRN
WHT
8
9
7
6
5
4
3
2
1
BRN
GRY
RY6
RY1
COM.
N.O.
N.O.
RED
1 1
10
16
BLK
WHT
WHT
BLK
WHT
GRY
ORG
ORG
FAN MOTOR
(H.V. transformer side)
1
2
BRN
BRN
RED
BRN
1
2
3
ORG
RED
BRN
1
2
3
BLK
SOLID-STATE RELAY 
(For side heating 
element control)
SOLID-STATE RELAY
(For top heating element control ) 
WHT
BLK
1
2
3
RED
WHT
BLK
RED
B
L
K
WHT
BLU
RED
B
L
K
R
E
D
W
H
T
W
H
T
W
H
T
O
R
G
W
H
T
W
H
T
SIDE HEATER
THERMAL CUT-OUT
GRY
RED
3
1
2
4
BLU
NL
BRN
G-Y
EARTH
NEUTRAL
LIVE
NOISE FILTER AND MONITOR FUSE 20A
SIDE
HEATING
ELEMENT
3
1
2
4
BRN
ORG
RED
OVEN LAMP & SOCKET
Black 
Mark
NOTE: 
Neutral (WHT/GRN) wire must 
be connected to the terminal 
with black mark on the oven 
light socket.
B L K
W H T
R E D
G R N
3
42
1
CN-E
O R G
B L K
32
1
B
L
K
FAN MOTOR
(Magnetron side)
BLK
W
H
T
W
H
T
W
H
T
W
H
T
G
R
N
G
R
Y
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