Sharp R-652M Service Manual ▷ View online
13
R-652M -
RE-WIRING
Ensure the following:
1.
Wires must not touch:
a)
High voltage parts.
(Magnetron, high voltage transformer, high voltage capacitor and high voltage rectifier assembly)
(Magnetron, high voltage transformer, high voltage capacitor and high voltage rectifier assembly)
b)
Parts that become hot.
(Heating elements, oven lamp, oven cavity magnetron and high voltage transformer)
(Heating elements, oven lamp, oven cavity magnetron and high voltage transformer)
c)
Sharp edges.
(Bottom plates, oven cavity, waveguide flange, chassis support and other metallic parts)
(Bottom plates, oven cavity, waveguide flange, chassis support and other metallic parts)
d)
Movable parts.
(Fan blade, any motor, switch, switch lever and open button)
(Fan blade, any motor, switch, switch lever and open button)
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.
WARNING:
Before carrying out any work carry out 3D checks
1)
D
isconnect the supply.
2)
D
oor opened, and wedged open.
3)
D
ischarge high voltage capacitor.
WIRING / RE-WIRING
MICROWAVE MEASUREMENT
After any repair, the microwve 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 275ml is 50
W/m
for microwave leakage to ensure continued safe
operation. BS EN 60335-2-25 specifies that the
maximum permitted leakage with a load of 275ml is 50
W/m
2
(equivalent to 5mW/cm
2
) at a distance of 5cm
from the oven.
PREPARATION
The following items are required to carry out this test:-
1.
1.
A low form of 600ml beaker made from
electrically non-conductive material, such as
glass or plastic, with an inside diameter of
approximately 8.5cm. This must contain 275
electrically non-conductive material, such as
glass or plastic, with an inside diameter of
approximately 8.5cm. This must contain 275
±
15ml of water, at an initial temperature of 20
±
2
°
C.
2.
A leakage detector which has been calibrated
within the preceeding 12 months to a stand
whose accuracy can be traced to National
Physical Laboratory Standards.
within the preceeding 12 months to a stand
whose accuracy can be traced to National
Physical Laboratory Standards.
Recommended instruments are:
Apollo "XI"
Celtec "A1000"
Celtec "A1000"
Before commencing the test, check the leakage
detector is functioning and adjusted according to the
manufacturer's instructions, and any spacers are fitted
to ensure that measurement is taken 5cm from the
surface of the oven.
detector is functioning and adjusted according to the
manufacturer's instructions, and any spacers are fitted
to ensure that measurement is taken 5cm from the
surface of the oven.
Whilst the maximum leakage permitted in BS EN 60335-2-25 is 50 W/m
2
(equivalent to 5mW/cm
2
), it is not
normal to detect anything signifcant, and therefore any detected leakage should be investigated.
PROCEDURE
1.
Place the beaker containing the water load
inthe 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
the energy.
inthe 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
the 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 benn
completed, it should be replaced.
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 benn
completed, it should be replaced.
3.
As shown in the diagram below, move the
probe slowly (not faster than 2.5cm/sec);-
probe slowly (not faster than 2.5cm/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
top
Dotted line indicates the path taken by the leakage detector.
14
R-652M -
WIRING DIAGRAMS
CIRCUIT SUBJECT TO CHANGE
WITHOUT NOTICE.
DOOR CLOSED
COOK OFF CONDITION
Note:
AC CORD CONNECTION
BRN : BROWN
BLU : BLUE
G-Y : GREEN AND YELLOW STRIPE
AC CORD CONNECTION
BRN : BROWN
BLU : BLUE
G-Y : GREEN AND YELLOW STRIPE
NOTE:
* INDICATES COMPONENTS
WITH POTENTIALS
ABOVE 250V
SCHEMATIC DIAGRAM
MIN
LINE CROSS CAPACITOR
0.22
µ
F/AC250V
MODEL : R-652M
0.94
µ
F
230-240V
SWITCH
STOP
CONTROL
TURNTABLE
OVEN
MOTOR
FAN MOTOR
LAMP
NO
COM.
RY1
UNIT
COM.
A3
TRANSFORMER
A1
RY2
RY3
TTM
FM
OL
AC2100V
CUT OUT
THERMAL
F8A
FUSE
F15A
OF 1.5MM
MONITOR
SWITCH
SWITCH
OVEN
Z
50H
BRN
/18
BLU
/18
CUT OUT
THERMAL
B2
B1
HEATER
RESISTOR 680 k
G-Y/18
EARTH
FUSE
*
CAPACITOR
*
RECTIFIER
TRANSFORMER
*
POWER
*
MAGNETRON
RESISTOR 10M
UNIT
FILTER
NOISE
NOISE SUPPRESSION COIL
CIRCUIT SUBJECT TO
CHANGE
CHANGE
2
/18 : SECTIONAL AREA
YELLOW STRIPE
G-Y : GREEN AND
BLU : BLUE
BRN : BROWN
AC CORD CONNECTION
1.
COOK OFF CONDITION
DOOR CLOSED
WITHOUT NOTICE
DIAGRAM
SCHEMATIC
NO
LATCH
SWITCH
SWITCH
MONITORED
SW2
SW1
SW3
LINE BYPASS
CAPACITOR
0.0047
µ
F/AC250V
LINE BYPASS
CAPACITOR
0.0047
µ
F/AC250V
15
R-652M -
Figure S-1. Pictorial Diagram
WIRING DIAGRAMS
BLK
OVEN LAMP
THERMAL
CUT-OUT
150¡C(MG)
150¡C(MG)
FM:
FAN MOTOR
FAN MOTOR
BLU
WHT
BLK
BLU
HIGH VOLTAGE COMPONENTS
H.V.WIRE B
MG:
MAGNETRON
MAGNETRON
H.V.WIRE A
C:
H.V.
CAPACITOR
H.V.
CAPACITOR
H.V.
RECTIFIER
RECTIFIER
T: HIGH VOLTAGE
TRANSFORMER
TRANSFORMER
NOISE
FILTER
POWER
SUPPLY
CORD
F8A
FUSE
FUSE
RED
RED
BRN
BLU
G/Y
3
2
1
COM
WHT
NO
NO
COM
SW3
STOP
SWITCH
STOP
SWITCH
NO
COM
GH:
GRILL HEATING
ELEMENT
GRILL HEATING
ELEMENT
N L
WHT
1
3
5
2
1
COM
NO
COM
NO
CN-B
RY3
RY2
GRN
CONTROL PANEL
BLU
BLU
BRN
TURNTABLE
MOTOR
MOTOR
RED
SW2
MONITOR
SWITCH
MONITOR
SWITCH
SW1
MONITORED
LATCH
SWITCH
MONITORED
LATCH
SWITCH
BLK
BRN
BRN
BLK
CN-A
CN-A
1
CN-B
2
RED
GRN
BRN
BRN
BLU
W
H
T
B
L
K
B
R
N
R
N
B
L
K
B
L
U
B
R
N
R
N
B
L
U
B
L
K
B
L
U
W
H
T
B
L
K
R
E
D
E
D
W
H
T
B
L
K
W
H
T
W
H
T
R
E
D
E
D
LIVE
NEUTRAL
EARTH
THERMAL
CUT-OUT
150¡C(OVEN)
150¡C(OVEN)
WHT
BRN
BLK
15A
FUSE
FUSE
COM
NO
RY1
BRN
WHT
BRN
16
R-652M -
WIRING DIAGRAMS
Figure S-2. Control Panel Circuit
+
–
+
–
C 4
GND
C 3
GND
VC
INT
VR
BUZZER
BUZZER
NC
OVEN LAMP
TURNTABLE
MOTOR
FAN MOTOR
TURNTABLE
MOTOR
FAN MOTOR
GRILL
HEATING
ELEMENT
HEATING
ELEMENT
HIGH
VOLTAGE
TRANSFORMER
VOLTAGE
TRANSFORMER
STOP
SWITCH
SWITCH
C 7
C 9
C 8
C 5
C 6
C13
C10
C11
C12
C 1
C 2
G 9
G10
G11
G12
G 1
41
64
1
24
IC1
RH-IZA954DR
LIQUID CRYSTAL DISPLAY
80
65
25
40
G 2
G 3
G 4
G 5
G 6
G 7
G 8
S12
S11
S10
S 9
S 8
S 7
S 6
S 5
S 4
S 3
S 2
S 1
C 3
C 2
C 1
SEG10
SEG11
P34
P35
P36
P37
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12
P13
P14
P15
P16
P17
SEG9
SEG8
VL2
VL1
AN7
AN6
AN5
5
10
15
20
45
50
55
60
30
35
70
75
AN4
P63
P62
AN1
P60
P57
P56
P55
CNTR0
VL3
COM0
COM1
COM2
P41
P40
RESET
P71
C1 0.1
µ
/50v
C2 0.1
µ
/50v
C4
R1 4.7k
R40 4.7k
R67 15k
R66 15k
R65 15k
R64 15k
R63 15k
R62 15k
R61 15k
R60 15k
R77 100k
R76 100k
R75 100k
R74 100k
R2 27
R3 4.7k
Q1
DTA143EKA
DTA143EKA
0.1
µ
/50v
C5
0.01
µ
/50v
C3 47
µ
/16v
C40
0.01
µ
/50v
P70
XIN
XOUT
VSS
P27
P26
P25
P24
P23
P22
P21
P20
COM3
AVSS
VREF
VCC
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
P53
P52
P51
P50
P47
P46
P45
P44
P43
INT0
D1-D2 1SS355
D1
D2
R4 1k
R5 15k
R6 15k
R7 15k
R30 3.3k
R21 1.5k
R41 15k
(J11) 4.7k
(J13) 4.7k
(J15) 10k
(J17) 4.7k
(J10)
(J12)
(J14) 4.7k
(J16) 4.7k
R90 4.7k
R91
1M
R68 15k
R69 15k
R70 15k
R71 15k
R69 15k
R70 15k
R71 15k
RR 200
D23
D22
D22-23
1SS355
ZD20
UDZ22B
UDZ22B
D20
DAP202U
DAP202U
NOTE
: IF NOT SPECIFIED, 1/10W
±
5%
D21
1SS355
1SS355
PWB BACK PLAT
LD1-LD5
SML-310PT
SML-310PT
Q30
DTA143EKA
DTA143EKA
Q2
2SA1037AK
2SA1037AK
Q3
2SA1037AK
2SA1037AK
Q20
DTA143EKA
DTA143EKA
Q21
DTD143EK
DTD143EK
Q22
DTA123JKA
DTA123JKA
Q23
DTA123JKA
DTA123JKA
Q24
2SA1037AK
2SA1037AK
LD1
LD2
LD3
LD4
LD5
R8 15k
C6 0.01
µ
/50v
330pF/50v
C63
330pF/50v
C62
330pF/50v
C61
330pF/50v
C60
C20
0.1
0.1
µ
/50v
CF1
CST4.00MGW
CST4.00MGW
C21
10
10
µ
/35v
C7 0.01
µ
/50v
ZD1
UDZ4.3B
AUTO
START
CRISPY
CRUMB
CRUMB
FOODS
MICROWAVE
POWER
LEVEL
AUTO
COOK
CHICKEN
PORTIONS
RICE/
PASTA
LESS
JACKET
POTATOES
OVEN
CHIPS
FRESH
VEG.
FRESH
FISH
CANNED
FOOD
DUAL
GRILL
AUTO
DEFROST
STOP/
CLEAR
CLOCK
Kg / Lb
10 min.
Kg • Lb
g • oz
TIMER
1 min.
10 sec.
START
AUTO
MINUTE
MORE
GRILL
KEBABS
CPU UNIT
KEY UNIT
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