Sharp R-8000GK Service Manual ▷ View online
R-8000GK
27
DOOR PANEL ASSEMBLY, LATCH HEAD RIGHT
AND LATCH HEAD LEFT
AND LATCH HEAD LEFT
10. Remove the fourteen (14) screws holding the door panel
assembly to the door frame.
11. Remove the door panel assembly from the door frame.
12. Remove the one (1) screw holding the latch head right to the
12. Remove the one (1) screw holding the latch head right to the
door panel assembly.
13. Remove the latch spring right from the latch head right and
the handle lever.
14. Now, the latch head right is free.
15. Remove the one (1) screw holding the latch head left to the
15. Remove the one (1) screw holding the latch head left to the
door panel assembly.
16. Remove the latch spring left from the latch head left and the
handle lever.
17. Now, the latch head left is free.
18. Release the two (2) handle springs from the two (2) handle
18. Release the two (2) handle springs from the two (2) handle
levers.
19. Pull out the two (2) handle pins from the two (2) handle levers.
20. Remove the two (2) handle levers and two (2) handle springs
20. Remove the two (2) handle levers and two (2) handle springs
from the door panel.
21. Now, the door panel is free.
MIDDLE DOOR GLASS
22. Remove the two (2) screws holding the glass mounting angle
B to the door frame.
23. Remove the middle door glass from the door frame.
24. Now, the middle door glass is free.
24. Now, the middle door glass is free.
FRONT DOOR GLASS
25. Remove each two (2) screws holding the two glass mounting
angles A to the door frame.
26. Remove the two (2) glass mounting angles A from the door
frame.
27. To release the two (2) tabs holding the lower end of the front
door glass, slide the front door glass upward.
28. Release the three (3) tabs holding the upper end of the front
door glass and remove the front door glass from the door
frame.
frame.
29. Now, the front door glass is free.
Figure C-8. Door Disassembly
Choke
Cover
Cover
Door
Frame
Frame
Door Panel
Assembly
Assembly
Putty Knife
Control panel assembly
1. CARRY OUT 3D CHECKS.
2. Disconnect the harness assembly from the connector CN-G
on the power unit.
3. Remove the four (4) screws holding the control panel assembly
to the oven cavity front plate.
4. Slide the control panel assembly leftward to release the eight
(8) tabs of the control panel assembly from the oven cavity
front plate.
front plate.
5. Now, the control panel assembly is free.
CPU unit
6. Remove the four (4) screws holding the panel angle to the
panel sub assembly.
7. Release the panel angle from the two (2) tabs of the panel sub
assembly first.
8. Pull out the panel angle from the panel sub assembly and
remove it.
9. Disconnect the harness from the connector CN-J on the CPU
unit.
10. Disconnect the harness assembly from the connector CN-H
on the CPU unit.
11. Remove the seven (7) screws holding the CPU unit to the
panel sub assembly.
CONTROL PANEL ASSEMBLY, CPU UNIT AND CONTROL UNIT REMOVAL
12. Now, the CPU unit is free.
Control unit
11. Remove the eleven (11) screws holding the control unit to the
panel sub assembly.
12. Now, the control unit is free.
NOTE: After the panel angle is removed from the panel sub
NOTE: After the panel angle is removed from the panel sub
assembly, it is can be found that the bottom side of the
panel sub assembly is transformed by heat. But it is not
abnormal and no problem to use the oven.
panel sub assembly is transformed by heat. But it is not
abnormal and no problem to use the oven.
Figure C-9. Panel Angle Removal
Tabs
Screw
Screw
Screw
Screw
Panel angl
Panel sub assembly
Bottom side of
panel sub assembly
panel sub assembly
R-8000GK
28
MICROWAVE MEASUREMENT
After any repair, the microwave oven must be checked for
microwave leakage to ensure continued safe operation. BS EN
60335-2-25 specifies that the maximum permitted leakage with
a load of 275 ml is 50 W/m
microwave leakage to ensure continued safe operation. BS EN
60335-2-25 specifies that the maximum permitted leakage with
a load of 275 ml is 50 W/m
2
(equivalent to 5 mW/cm
2
)
at a
distance of 5 cm from the oven.
PREPARATION
The following items are required to carry out this test:-
1. A low form of 600 ml beaker made from an electrically non-
1. A low form of 600 ml beaker made from an electrically non-
conductive material, such as glass or plastic, with an inside
diameter of approximately 8.5 cm. This must contain 275
diameter of approximately 8.5 cm. This must contain 275
± 15
ml of water, at an initial temperature of 20
± 2˚C.
2. A leakage detector which has been calibrated within the
preceding 12 months to a stand whose accuracy can be
traced to National Physical Laboratory Standards.
traced to National Physical Laboratory Standards.
Recommended instruments are:
Apollo "XI"
Celtec "A100"
Celtec "A100"
Before commencing the test, check that the leakage detector is
functioning and adjusted according to the manufacturer's in-
structions, and any spacers are fitted to ensure that measure-
ment is taken 5cm from the surface of the oven.
functioning and adjusted according to the manufacturer's in-
structions, and any spacers are fitted to ensure that measure-
ment is taken 5cm from the surface of the oven.
PROCEDURE
1. Place the beaker containing the water load in the oven cavity
at the centre of the turntable. The placing of this standard load
in the oven is important, not only to protect the oven, but also
to ensure that any leakage it is not disguised by too large a
load absorbing energy.
in the oven is important, not only to protect the oven, but also
to ensure that any leakage it is not disguised by too large a
load absorbing energy.
2. Close the oven door, and with the power level set to FULL,
turn the oven ON with the timer set for a few minutes
operation. Should the water begin to boil before the test has
been completed, it should be replaced.
operation. Should the water begin to boil before the test has
been completed, it should be replaced.
3. As shown in the diagram below, move the probe slowly (not
faster than 2.5 cm/sec.);-
a) around the edge of the door following the gap
b) across the face of the door
c) across any vents in the oven's sides, rear or top
b) across the face of the door
c) across any vents in the oven's sides, rear or top
Dotted line indicates the path taken by the leakage detector.
Whilst the maximum leakage permitted in BS EN 60335-2-25 is 50 W/
m
m
2
(equivalent to 5 mW/cm
2
), it is not normal to detect any significant
leakage, and therefore any detected leakage should be investigated.
SERVICE MAINTENANCE CLEANING
It is recommended to schedule maintenance cleaning for the
following portions 12 months or more often if heavy grease-laden
foods are cooked very frequently.
following portions 12 months or more often if heavy grease-laden
foods are cooked very frequently.
Portions to be cleaned:
1) Inside surface of Exhaust duct
2) Inside surface of Heater duct left
3) Inside surface of Convection duct
4) Convection fan
5) Inside surface of Heater duct upper
6) Left outside wall of oven cavity (site for Heater duct left)
7) Rear outside wall of oven cavity (site for Convection
1) Inside surface of Exhaust duct
2) Inside surface of Heater duct left
3) Inside surface of Convection duct
4) Convection fan
5) Inside surface of Heater duct upper
6) Left outside wall of oven cavity (site for Heater duct left)
7) Rear outside wall of oven cavity (site for Convection
duct)
8) Upper outside wall of oven cavity (site for Hater duct
upper and Exhaust duct)
1.
CARRY OUT 3D CHECKS.
2. Refer to the chapter of "EXHAUST DUCT, HEATER DUCT
LEFT ASSEMBLY, CONVECTION DUCT ASSEMBLY AND
HEATER DUCT UPPER ASSEMBLY REMOVAL", "SIDE
HEATING ELEMENT REMOVAL", "JET MOTOR
REMOVAL", and "TOP HEATING ELEMENT REMOVAL".
And prepare so that the above portions are touched.
HEATING ELEMENT REMOVAL", "JET MOTOR
REMOVAL", and "TOP HEATING ELEMENT REMOVAL".
And prepare so that the above portions are touched.
3. Wipe and clean the above portions with a soft cloth or sponge
that is damp with water or mild soap.
4. After cleaning, dry the cleaned portions fully.
5. Assemble the microwave oven completely.
5. Assemble the microwave oven completely.
CAUTION : DO NOT SPREAD WATER OR SOAP ON THE
SIDE HEATING ELEMENT AND THE TOP HEAT-
ING ELEMENT BECAUSE THEY MAY RUST OR
CAUSE POOR-INSULATION.
TO CLEAN THEM, CARRY OUT "HEATING WITH-
OUT FOOD" OPERATION, REFERRING TO THE
OPERATION MANUAL, IN A FULLY ASSEMBLED
CONDITION. HEATING WITHOUT FOOD IS THE
CONVECTION COOKING MODE AT 250˚C FOR
20 MINUTES.
ING ELEMENT BECAUSE THEY MAY RUST OR
CAUSE POOR-INSULATION.
TO CLEAN THEM, CARRY OUT "HEATING WITH-
OUT FOOD" OPERATION, REFERRING TO THE
OPERATION MANUAL, IN A FULLY ASSEMBLED
CONDITION. HEATING WITHOUT FOOD IS THE
CONVECTION COOKING MODE AT 250˚C FOR
20 MINUTES.
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.
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
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
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)
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
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
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
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
F10A
HEATER
TEMPERATURE
FUSE 150˚C
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
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
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)
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
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
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
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
F10A
HEATER
TEMPERATURE
FUSE 150˚C
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.
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,
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.
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.
2. "MANUAL/REPEAT" KEY TOUCHED.
3. OVEN TEMPERATURE SELECTED.
4. "START" KEY TOUCHED.
TOP HEATER
THERMAL
CUT-OUT 170˚C
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
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)
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
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
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
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
F10A
HEATER
TEMPERATURE
FUSE 150˚C
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
THERMAL
CUT-OUT 170˚C
SIDE HEATER
THERMAL
CUT-OUT 150˚C
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)
(MONITORED LATCH SWITCH)
3RD.
LATCH
SWITCH
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
TEMPERATURE
FUSE 150˚C
T/C TRANSFORMER
FUSE
20A
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
F10A
HEATER
TEMPERATURE
FUSE 150˚C
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
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