Sharp R-2398G Service Manual ▷ View online
31
R-2398
MICROWAVE MEASUREMENT
After adjustment of door latch switches, monitor switch
and door are completed individually or collectively, the
following leakage test must be performed with a survey
instrument and it must be confirmed that the result meets
the requirements of the performance standard for micro-
wave oven.
and door are completed individually or collectively, the
following leakage test must be performed with a survey
instrument and it must be confirmed that the result meets
the requirements of the performance standard for micro-
wave oven.
REQUIREMENT
The safety switch must prevent microwave radiation emis-
sion in excess of 5mW/cm
sion in excess of 5mW/cm
2
at any point 5cm or more from
external surface of the oven.
PREPARATION FOR TESTING:
Before beginning the actual test for leakage, proceed as
follows;
1. Make sure that the test instrument is operating nor-
follows;
1. Make sure that the test instrument is operating nor-
mally as specified in its instruction booklet.
Important:
Survey instruments that comply with the requirement
Survey instruments that comply with the requirement
for instrumentations as prescribed by the performance
standard for microwave ovens must be used for test-
ing.
standard for microwave ovens must be used for test-
ing.
Recommended instruments are:
NARDA 8100
NARDA 8200
HOLADAY HI 1500
SIMPSON 380M
NARDA 8100
NARDA 8200
HOLADAY HI 1500
SIMPSON 380M
2. Place the oven tray into the oven cavity.
3. Place the load of 275
3. Place the load of 275
±
15ml of water initially at 20
±
5˚C in the centre of the oven tray. The water
container should be a low form of 600 ml beaker with
inside diameter of approx. 8.5cm and made of an
electrically non-conductive material such as glass
or plastic.
The placing of this standard load in the oven is impor-
tant not only to protect the oven, but also to insure that
any leakage is measured accurately.
inside diameter of approx. 8.5cm and made of an
electrically non-conductive material such as glass
or plastic.
The placing of this standard load in the oven is impor-
tant not only to protect the oven, but also to insure that
any leakage is measured accurately.
4. Close the door and turn the oven ON with the timer set
for several minutes. If the water begins to boil before
the survey is completed, replace it with 275ml of cool
water.
the survey is completed, replace it with 275ml of cool
water.
5. Move the probe slowly (not faster that 2.5cm/sec.)
along the gap.
6. The microwave radiation emission should be meas-
ured at any point of 5cm or more from the external
surface of the oven.
surface of the oven.
mW cm
2
mW cm
2
Microwave leakage measurement at 5 cm distance
SHARP
32
R-2398
Figure O-2 Oven Schematic-IDLE Condition (Door opened condition)
SCHEMATIC
NOTE: CONDITION OF OVEN
1. POWER SUPPLY CONNECTED AND/OR 1MINUTE
1. POWER SUPPLY CONNECTED AND/OR 1MINUTE
AFTER DOOR CLOSED OR COOK OFF.
2. : APPEAR ON DISPLAY.
NOTE:
Indicates components with potential above 250 V.
Figure O-1 Oven Schematic-OFF Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. FOR 1MINUTE AFTER DOOR CLOSED.
2. : APPEAR ON DISPLAY.
1. FOR 1MINUTE AFTER DOOR CLOSED.
2. : APPEAR ON DISPLAY.
FUSE F13A
BLU
NEUTRAL
LIVE
GRN/YLW
BRN
NOISE FILTER
1ST LATCH SWITCH
(PRIMARY INTERLOCK SWITCH)
(PRIMARY INTERLOCK SWITCH)
MONITOR
SWITCH
MONITOR
RESISTOR
4.3
Ω
/20W
NOISE SUPPRESSION COIL
DISCHARGE RESISTOR 680 k
Ω
1/2W
DISCHARGE RESISTOR 10 M
Ω
1/2W
LINE CROSS CAPACITOR 0.22
µ
F/ AC250V
LINE CROSS CAPACITOR
10000 pF/ AC250V
LINE CROSS CAPACITOR
10000 pF/ AC250V
A7
A5
BLOWER MORTOR
TEMP. FUSE 120C
°
OVEN TEMP.
FUSE 120C
°
FUSE
F6.3A
2ND LATCH SWITCH
FUSE M8A (2)
A1
MAGNETRON (1)
TEMP. FUSE 150
TEMP. FUSE 150
°
C
MAGNETRON (2)
TEMP. FUSE 150
TEMP. FUSE 150
°
C
OVEN LAMP
BLOWER MOTOR
A3
CONTROL
UNIT
UNIT
RY3
RY4
B1
3RD LATCH SWITCH
OVEN
THERMISTER (1)
OVEN
THERMISTER (2)
STOP
SWITCH
SWITCH
TAB3
TAB2
TAB1
TAB4
HIGH VOLTAGE
TRANSFORMER (1)
230V - 240V~50Hz
H. V. RECTIFIER
H.V. CAPACITOR
MAGNETRON (1)
FUSE M8A (1)
SM
UPPER
STIRRER MOTOR
LOWER
STIRRER MOTOR
SM
BM
B2
B3
H1
H3
MAGNETRON THERMISTER
H. V. RECTIFIER
H.V. CAPACITOR
MAGNETRON (2)
H.V.
FUSE
0.6 A/ 5 kV
FUSE
0.6 A/ 5 kV
HIGH VOLTAGE
TRANSFORMER (2)
L
BLK
WHT
N
OL
RY1
EARTH
H.V.
FUSE
0.6 A/ 5 kV
FUSE
0.6 A/ 5 kV
FUSE F13A
NOISE FILTER
1ST LATCH SWITCH
(PRIMARY INTERLOCK SWITCH)
(PRIMARY INTERLOCK SWITCH)
MONITOR
SWITCH
NOISE SUPPRESSION COIL
DISCHARGE RESISTOR 680 k
Ω
1/2W
DISCHARGE RESISTOR 10 M
Ω
1/2W
LINE CROSS CAPACITOR 0.22
µ
F/ AC250V
LINE CROSS CAPACITOR
10000 pF/ AC250V
LINE CROSS CAPACITOR
10000 pF/ AC250V
A7
A5
BLOWER MORTOR
TEMP. FUSE 120C
°
OVEN TEMP.
FUSE 120C
°
FUSE
F6.3A
2ND LATCH SWITCH
FUSE M8A (2)
A1
MAGNETRON (1)
TEMP. FUSE 150
TEMP. FUSE 150
°
C
MAGNETRON (2)
TEMP. FUSE 150
TEMP. FUSE 150
°
C
OVEN LAMP
BLOWER MOTOR
A3
CONTROL
UNIT
UNIT
RY3
RY4
B1
3RD LATCH SWITCH
OVEN
THERMISTER (1)
OVEN
THERMISTER (2)
STOP
SWITCH
SWITCH
TAB3
TAB2
TAB1
TAB4
HIGH VOLTAGE
TRANSFORMER (1)
H. V. RECTIFIER
H.V. CAPACITOR
MAGNETRON (1)
FUSE M8A (1)
SM
UPPER
STIRRER MOTOR
LOWER
STIRRER MOTOR
SM
BM
RY1
B2
B3
H1
H3
MAGNETRON THERMISTER
H. V. RECTIFIER
H.V. CAPACITOR
MAGNETRON (2)
HIGH VOLTAGE
TRANSFORMER (2)
L
BLK
WHT
N
OL
BLU
NEUTRAL
LIVE
GRN/YLW
BRN
230V - 240V~50Hz
EARTH
H.V.
FUSE
0.6 A/ 5 kV
FUSE
0.6 A/ 5 kV
H.V.
FUSE
0.6 A/ 5 kV
FUSE
0.6 A/ 5 kV
MONITOR
RESISTOR
4.3
Ω
/20W
33
R-2398
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. SELECT TIME KEY TOUCHED.
3. COOKING TIME PROGREMMED.
1. DOOR CLOSED.
2. SELECT TIME KEY TOUCHED.
3. COOKING TIME PROGREMMED.
4. START PAD TOUCHED.
Figure O-3 Oven Schematic-Cooking Condition
NOTE:
Indicates components with potential above 250 V.
FUSE F13A
NOISE FILTER
1ST LATCH SWITCH
(PRIMARY INTERLOCK SWITCH)
(PRIMARY INTERLOCK SWITCH)
MONITOR
SWITCH
NOISE SUPPRESSION COIL
DISCHARGE RESISTOR 680 k
Ω
1/2W
DISCHARGE RESISTOR 10 M
Ω
1/2W
LINE CROSS CAPACITOR 0.22
µ
F/ AC250V
LINE CROSS CAPACITOR
10000 pF/ AC250V
LINE CROSS CAPACITOR
10000 pF/ AC250V
A7
A5
BLOWER MORTOR
TEMP. FUSE 120C
°
OVEN TEMP.
FUSE 120C
°
FUSE
F6.3A
2ND LATCH SWITCH
FUSE M8A (2)
A1
MAGNETRON (1)
TEMP. FUSE 150
TEMP. FUSE 150
°
C
MAGNETRON (2)
TEMP. FUSE 150
TEMP. FUSE 150
°
C
OVEN LAMP
BLOWER MOTOR
A3
CONTROL
UNIT
UNIT
RY3
RY4
B1
3RD LATCH SWITCH
OVEN
THERMISTER (1)
OVEN
THERMISTER (2)
STOP
SWITCH
SWITCH
TAB3
TAB2
TAB1
TAB4
HIGH VOLTAGE
TRANSFORMER (1)
H. V. RECTIFIER
H.V. CAPACITOR
MAGNETRON (1)
FUSE M8A (1)
SM
UPPER
STIRRER MOTOR
LOWER
STIRRER MOTOR
SM
BM
RY1
B2
B3
H1
H3
MAGNETRON THERMISTER
H. V. RECTIFIER
H.V. CAPACITOR
MAGNETRON (2)
HIGH VOLTAGE
TRANSFORMER (2)
L
BLK
WHT
N
OL
BLU
NEUTRAL
LIVE
GRN/YLW
BRN
230V - 240V~50Hz
EARTH
H.V.
FUSE
0.6 A/ 5 kV
FUSE
0.6 A/ 5 kV
H.V.
FUSE
0.6 A/ 5 kV
FUSE
0.6 A/ 5 kV
MONITOR
RESISTOR
4.3
Ω
/20W
34
R-2398
6
4
5
1
2
3
6
4
5
1
2
3
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
Figure S-1. Pictrorial Diagram
BRN
NOISE FILTER
BLU
NL
FUSE 13A
STOP
SWITCH
1 RED
3 WHT
2
TOUCH CONTROL PANEL
IC
CN-H
CN-B
CT1
TAB1
RY-3
TAB2
RY-1
CN-A
T1
CT2
RY-4
TAB4
CN-H
TAB2
TAB1
CN-A
4
1 BLK
5 WHT
3 PNK
2
6
7 RED
BRN
TAB3
TAB4
NO
COM.
BRN
ORG
PNK
COM.
NO
3RD LATCH
SWITCH
WHT
GRN
GRN
ORG
WHT
GRY
COM.
NO
1ST LATCH
SWITCH
(Cabinet side)
COM.
NO
COM.
NC
WHT
GRY
HIGH VOLTAGE COMPONENTS
MAGNETRON (1)
(Upper)
White case
(Cabinet side)
Black tape
MAGNETRON (2)
(Lower)
HIGH VOLTAGE
TRANSFORMER
(1)
H.V. FUSE
H.V. FUSE
H. V. RECTIFIER
HIGH VOLTAGE
CAPACITOR (2)
YLW
WHT
OVEN LAMP
& SOCKET
PNK
OVEN
THERMISTOR (1)
MAGNETRON
TEMP. FUSE (2)
150˚C
FUSE
F6.3A
G/Y
POWER
SUPPLY
CORD
EARTH
NEUTRAL
LIVE
WHT
PNK
GRY
MONITOR
SWITCH
BLOWER
MOTOR
CN-D
BLK
ORG
RED
1 GRN
3 BLK
2 ORG
CN-B
GRN
GRN
GRY
2ND LATCH
SWITCH
(Oven side)
BLK
RED
ORG
ORG
ORG
GRY
WHT
STIRRER
MOTOR
(Upper)
YLW
PNK
WHT
GRY
BLK
GRY
PNK
ORG
PNK
HIGH VOLTAGE
TRANSFORMER
(2)
HIGH VOLTAGE
CAPACITOR (1)
H. V. RECTIFIER
BLK
MAGNETRON
THERMISTOR
(Door side)
PNK
PNK
WHT
WHT
BLK
PNK
GRY
PNK
PNK
WHT
W
H
T
W
H
T
W
H
T
R
E
D
B
L
K
MONITOR RESISTOR
FUSE M8A (1)
(Cabinet side)
BRN
BRN
FUSE M8A (2)
(Oven side)
TAB3
1
2
3
RED
WHT
OVEN THERMISTOR (2)
Blue
case
BLK
MAGNETRON
TEMP. FUSE (1)
150˚C
BLOWER MOTOR
TEMP. FUSE
120˚C
OVEN TEMP.
FUSE 120˚C
RED
RED
1
2
RED
WHT
1
2
GRN
BLK
WHT
BLK
STIRRER
MOTOR
(Lower)
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