Sharp R-62FBSTM Service Manual ▷ View online
R-61FBSTM/R-62FBSTM - 25
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 require-
ments of the performance standard for microwave oven.
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 require-
ments of the performance standard for microwave 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 normally
follows;
1. Make sure that the test instrument is operating normally
as specified in its instruction booklet.
Important:
Survey instruments that comply with the requirement for
instrumentations as prescribed by the performance
standard for microwave ovens must be used for testing.
Important:
Survey instruments that comply with the requirement for
instrumentations as prescribed by the performance
standard for microwave ovens must be used for testing.
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 center 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 important
not only to protect the oven, but also to insure that any
leakage is measured accurately.
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 important
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.
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 measured
at any point of 5cm or more from the external surface of
the oven.
the oven.
MICROWAVE MEASUREMENT
Microwave leakage measurement at 5 cm distance
SHARP
R-61FBSTM/R-62FBSTM - 26
Parts
Symbol
Value / Data
Fuse
F1
F20A 250V
Thermal cut-out (OVEN)
TC01
145
°
C
Oven lamp
OL
240-250V 25W
High voltage capacitor
C
0.94
µ
AC 2100V
Magnetron
MG
Filament < 1
Ω
Filament – chassis
∞
ohm.
Power transformer
T
Filament winding < 1
Ω
Secondary winding Approx. 160
Ω
Primary winding Approx. 2.
Ω
Fuse
F2
F8A 250V
thermal cut-out(Magnetron)
TC02
125
°
C
TEST DATA AT A GLANCE
WARNING: WIRING / RE-WIRING.
Before carrying out any work; carry out 3D checks.
1. Disconnect the supply
2. Door opened, and wedge open.
3. Discharge the high voltage capacitor.
Before carrying out any work; carry out 3D checks.
1. Disconnect the supply
2. Door opened, and wedge open.
3. Discharge the high voltage capacitor.
RE-WIRING.
Ensure the following:
1. Wires must not touch:
Ensure the following:
1. Wires must not touch:
a) High voltage parts.
(Magnetron, high voltage transformer, high
voltage capacitor and high voltage rectifier).
voltage capacitor and high voltage rectifier).
b) Parts that become hot.
(Heating elements, oven lamp, oven cavity
magnetron and high voltage transformer).
magnetron and high voltage transformer).
c) Sharp edges.
(Bottom plates, oven cavity, waveguide
flange, chassis support and other
metallic parts).
flange, chassis support and other
metallic parts).
d) Movable parts.
( Fan blade, any motor, switch).
2. Positive lock connectors are fitted correctly. Ensure
the locking pin is located correctly.
3. Wires are connected correctly as per pictorial
diagram.
4. No wire leads are trapped by the outer wrap.
WIRING/RE-WIRING
R-61FBSTM/R-62FBSTM - 27
*INDICATES COMPONENTS WITH
POTENTIAL ABOVE 250V
POTENTIAL ABOVE 250V
Figure 0-1 Oven Schematic-OFF Condition, Door Closed.
Figure 0-2 Oven Schematic-ON Dual Cooking Condition, (Microwave and Grilll mode.
SCHEMATIC DIAGRAMS
T: HIGH VOLTAGE
TRANSFORMER
TRANSFORMER
MG: MAGNETRON
H.V. RECTIFIER
C:
H.V. CAPACITOR
0.94
µ
F/ AC2100V
TURNTABLE
MOTOR
FAN MOTOR
OVEN LAMP
TC01:OVEN THERMAL
CUT-OUT 145˚C
SW1:
MONITORED
LATCH SWITCH
MONITORED
LATCH SWITCH
SW2:
MONITOR
SWITCH
MONITOR
SWITCH
A1
OL
FM
TTM
N.C.
COM.
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
F1: FUSE
( F20A)
( F20A)
N
L
0.22
µ
/AC250V
10M/ 0.5W
680k 0.5W
0.0047
µ
F/ AC250V
NOISE FILTER
230-240V
˜
50Hz (R-61/62FBSTM)
COM.
COM.
N.O.
N.O.
A3
B2
A5
B1
RY1
RY2
RY4
COM.
N.O.
N.O.
SW3: STOP SWITCH
TC02: MAGNETRON THERMAL
CUT-OUT 125˚C
0.0047
µ
F/ AC250V
HEATER
ASYMMETRIC
RECTIFIER
RECTIFIER
F2:
FUSE
F8A
RY3
CONTROL UNIT
COM.
N.O.
T: HIGH VOLTAGE
TRANSFORMER
TRANSFORMER
MG: MAGNETRON
H.V. RECTIFIER
C:
H.V. CAPACITOR
0.94
µ
F/ AC2100V
TURNTABLE
MOTOR
FAN MOTOR
OVEN LAMP
TC01:OVEN THERMAL
CUT-OUT 145˚C
SW1:
MONITORED
LATCH SWITCH
MONITORED
LATCH SWITCH
SW2:
MONITOR
SWITCH
MONITOR
SWITCH
A1
OL
FM
TTM
N.C.
COM.
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
F1: FUSE
( F20A)
( F20A)
N
L
0.22
µ
/AC250V
10M/ 0.5W
680k 0.5W
0.0047
µ
F/ AC250V
NOISE FILTER
230-240V
˜
50Hz (R-61/62FBSTM)
COM.
COM.
N.O.
N.O.
A3
B2
A5
B1
RY1
RY2
RY4
COM.
N.O.
N.O.
SW3: STOP SWITCH
TC02: MAGNETRON THERMAL
CUT-OUT 125˚C
0.0047
µ
F/ AC250V
HEATER
ASYMMETRIC
RECTIFIER
RECTIFIER
F2:
FUSE
F8A
RY3
CONTROL UNIT
COM.
N.O.
R-61FBSTM/R-62FBSTM - 28
SCHEMATIC DIAGRAMS
T: HIGH VOLTAGE
TRANSFORMER
TRANSFORMER
MG: MAGNETRON
H.V. RECTIFIER
C:
H.V. CAPACITOR
0.94
µ
F/ AC2100V
TURNTABLE
MOTOR
FAN MOTOR
OVEN LAMP
TC01:OVEN THERMAL
CUT-OUT 145˚C
SW1:
MONITORED
LATCH SWITCH
MONITORED
LATCH SWITCH
SW2:
MONITOR
SWITCH
MONITOR
SWITCH
A1
OL
FM
TTM
N.C.
COM.
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
F1: FUSE
( F20A)
( F20A)
N
L
0.22
µ
/AC250V
10M/ 0.5W
680k 0.5W
0.0047
µ
F/ AC250V
NOISE FILTER
230-240V
˜
50Hz (R-61/62FBSTM)
COM.
COM.
N.O.
N.O.
A3
B2
A5
B1
RY1
RY2
RY4
COM.
N.O.
N.O.
SW3: STOP SWITCH
TC02: MAGNETRON THERMAL
CUT-OUT 125˚C
0.0047
µ
F/ AC250V
HEATER
ASYMMETRIC
RECTIFIER
RECTIFIER
F2:
FUSE
F8A
RY3
CONTROL UNIT
COM.
N.O.
Figure 0-3 Oven Schematic-ON Cooking Condition, (Grill only mode).
T: HIGH VOLTAGE
TRANSFORMER
TRANSFORMER
MG: MAGNETRON
H.V. RECTIFIER
C:
H.V. CAPACITOR
0.94
µ
F/ AC2100V
TURNTABLE
MOTOR
FAN MOTOR
OVEN LAMP
TC01:OVEN THERMAL
CUT-OUT 145˚C
SW1:
MONITORED
LATCH SWITCH
MONITORED
LATCH SWITCH
SW2:
MONITOR
SWITCH
MONITOR
SWITCH
A1
OL
FM
TTM
N.C.
COM.
EARTH
BLU
BRN
LIVE
NEUTRAL
G-Y
F1: FUSE
( F20A)
( F20A)
N
L
0.22
µ
/AC250V
10M/ 0.5W
680k 0.5W
0.0047
µ
F/ AC250V
NOISE FILTER
230-240V
˜
50Hz (R-61/62FBSTM)
COM.
COM.
N.O.
N.O.
A3
B2
A5
B1
RY1
RY2
RY4
COM.
N.O.
N.O.
SW3: STOP SWITCH
TC02: MAGNETRON THERMAL
CUT-OUT 125˚C
0.0047
µ
F/ AC250V
HEATER
ASYMMETRIC
RECTIFIER
RECTIFIER
F2:
FUSE
F8A
RY3
CONTROL UNIT
COM.
N.O.
Figure 0-4 Oven Schematic-ON Cooking Condition, (Microwave only mode).
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