Sharp R-343 (serv.man3) Service Manual ▷ View online
R343M - 13
RE-INSTALL
1. Re-install the front door glass to the door frame as
follows.
1) Insert the upper edge of the front door glass into the six
(6) tabs of the door frame.
2) Slide the front door glass downwards and insert the
lower edge of the front door glass into the six (6) tabs of
the door frame.
the door frame.
3) Slide the front door glass rightwards and insert the right
edge of the front door glass into the one (1) tab of the
door frame.
door frame.
2. Re-install the glass stopper to the door frame as follows.
1) Re-install the glass stopper to the door frame so that the
1) Re-install the glass stopper to the door frame so that the
two (2) holes of the glass stopper meet the two (2) pins
of the door frame.
of the door frame.
2) Hold the glass stopper to the door frame with the two (2)
screws.
3. Re-install the latch spring to the latch head. Re-install
the latch spring to the door frame. Re-install latch head
to door frame.
to door frame.
4. Re-install door panel to door frame by fitting eight (8)
tabs of door frame to eight (8) holes of door panel.
5. Fit the door panel to the door frame with four (4) screws.
6. Insert two (2) pins of door panel on two (2) hole of upper
6. Insert two (2) pins of door panel on two (2) hole of upper
and lower oven hinges.
7. Re-install choke cover to door panel .
Note: After any service to the door;
Make sure that door sensing switch and primary
latch switch are operating properly.
latch switch are operating properly.
COMPONENT REPLACEMENT AND ADJUSTMENT
PIN
PIN
LOWER
OVEN HINGE
OVEN HINGE
UPPER
OVEN HINGE
OVEN HINGE
LOWER
OVEN HINGE
OVEN HINGE
CHOKE COVER
DOOR
PANEL
PANEL
DOOR SUB
ASSEMBLY
ASSEMBLY
WARNING: WIRING/RE-WIRING
Before carrying out any work; carry out 3D checks.
1. Disconnect the supply.
2. Open the door and wedge open.
3. Discharge the high voltage capacitor.
1. Disconnect the supply.
2. Open the door and wedge open.
3. Discharge the high voltage capacitor.
RE-WIRING
Ensure the following:
1. Wires must not touch:
1. Wires must not touch:
a) High voltage parts.
b) Parts that become hot.
c) Sharp edges.
d) Movable parts.
b) Parts that become hot.
c) Sharp edges.
d) Movable parts.
2. Positive lock connectors are fitted correctly.
3. Wires are connected correctly as per pictoral
3. Wires are connected correctly as per pictoral
diagram.
4. No wire leads are trapped by the outer wrap.
WIRING/ RE-WIRING
R343M - 14
SCHEMATIC DIAGRAM
Figure 0-1 Oven Schematic
D70
D71
D1
D3
D72
no
STOP
SWITCH
no
NC
no
HV
HV
WHT
BLU
GRY
RED
WHT
/18
RED
RED
BRN
WHT
/18
YLW
/18
GRY
BRN
BLK
/18
BLK
BLK
/18
/18
RED
/18
WHT
*INDICATES PARTS WITH POTENTIALS OVER 240V
*
*
*
*
230-240V
50Hz
OVEN
EARTH
N
L
BLU
BRN /17
/17
G-Y/17
MAGNETRON
RECTIFIER
POWER TRANSFORMER
H.V.
CAPACITOR
1.0 F
2100VAC
FUSE
F8A
F8A
NOISE SUPPRESSION COIL
0.22 /250V
0.0033 /250V
0.0033 /250V
F1:
680K/0.5W
10M/0.5W
THERMAL
125
0
C
MAGNETRON
FM
OL
M
T
T
CUT-OUT
THERMAL
RY2
RY1
MONITOR
SWITCH
SWITCH
A3
A1
A5
NO.
COM.
B1
B2
SW2
SW3
MONITORED
LATCH SWITCH
SW1
LATCH SWITCH
SW1
125
0
C
CUT-OUT
R343M - 15
Figure S-2. Control Panel Circuit
+
–
+
–
+
–
+
–
+
–
+
–
+
–
D1:11ES1
VRS1
A1
COM
NO
B1
B2
A5
DOOR SWITCH
OVEN LAMP
TURNTABLE
MOTOR
FAN MOTOR
TURNTABLE
MOTOR
FAN MOTOR
HIGH
VOLTAGE
TRANSFORMER
VOLTAGE
TRANSFORMER
AC(N)
FAN
MOTOR
MOTOR
AC230-240V
50Hz
50Hz
AC(L)
D80
D3 11ES1
D70 MPG06J
Q20
KRA
101M
101M
Q21
KRC105M
KRC105M
Q70
KRC105M
KRC105M
Q30
Q40
VC
KRC101M
2SA
1267Y
1267Y
RY1
10G471K
RY2
D71
MPG06J
MPG06J
D74
C43
R65 100k
C44
C80
C42
C21
C10
D10
R10 27k
R11 27k
R12 10k
SP30
3.3k
ZD40
HZ4C3
HZ4C3
1k
2w
1k
2w
1k
2w
1k
2w
1k
2w
R5
R30
15k
R20 8.2k
R81 4.7k
R72 8.2k
R80 15k
(J3)
(J2)
(J4)
(J6)
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
VSS
R70
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
C3
C2
C1
22
25
30
35
40
42
21
1
5
10
15
R71
R72
R73
R81
R83
R90
R92
XIN
XOUT
RESET
HOLD
VLC
COM1
COM2
COM3
COM4
VDD
R91
INT2
INT1
AIN3
AIN2
AIN1
AIN0
R63
R62
R61
R60
(J5)
(J7)
R31 15k
R64 100k
R42
10kF
*
R50
1k
R41
1.5k 1/2w
R40
ZD21
ZD20
ZD1 HZ12C1
HZ12C1
HZ12C1
C70 47
µ
/35v
C20 220
µ
/35v
C1 220
µ
/16v
C71 100
µ
/35v
C22 0.1
µ
/50v
IC1 IZA919DR
Auto Cook /
Defrost
Defrost
Power Level /
Weigft
Weigft
Stop /
Clear
Clear
Start /
Auto
Minute
Auto
Minute
NOTE :
IF NOT SPECIFIED, 1/4
±
5%
LIQUID CRYSTAL DISPLAY
SW1
SW5
10sec.
1min.
10min.
SW6
SW7
SW2
SW3
SW4
C40 0.1
µ
/50v
0.1
µ
/50v
C41 47
µ
/16v
C50 33p/50v
10
µ
/35v
R73 15k
R70 360 1w
R71 360 1w
ZD71 HZ7C2
ZD70 HZ7C2
D72
D73
D2
LED3
LED2
LED1
11ES1
D20
R4
R3
R2
R1
(J1)
a
b
d
c
IF NOT SPECIFIED, 1SS270A
IF NOT SPECIFIED, 0.01
µ
F / 16v
A3
*
1
2
3
4
2
3
4
1
2
3
4
2
3
4
o/M
50v
50v
C61 330p/50v
CONTROL
P
ANEL
CIRCUIT DIAGRAM
R343M - 16
Figure S-3. Printed Wiring Board
0
0
LED1
LED2
LED3
Q30
Q40
C44
C42
(J6)
(J4)
(J2)
(WH-1)
12
4
1
15
1
4
(J3)
(J5)
(J7)
(R60)
(R61)
(R62)
(R63)
C50
C40
C43
C41
R50
R80
Q21
D74
D20
RY2
Q20
ZD71
R71
R70
D70
D3
CN-A
(J1)
C21
C70
R42
R43
R40
R20
R72
4
5
6
R11
R41
B
B
1
E
B
B
E
E
E
B
C
B
A
E
R30
R31
R12
R10
R5
R4
R3
R2
R73
RY1
D73
R1
D1
VRS1
AC LINE VOLTAGE IS SUPPLIED TO ALL PARTS
C10
C80
D80
ZD21
ZD20
D72
ZD70
D71
R81
C22
C20
Q70
C71
D10
ZD40
ZD1
DIP
WARNING:
WARNING:
TRANSLESS
SP30
IC1
,F
(SW1)
(SW2)
(SW3)
(SW4)
(WH-1)
(SW5)
(SW6)
(SW7)
(SW60)
CN-B
(C60)
(C61)
(R64)
(R65)
3
(CF1)
1
21
22
42
2
D2
C1
PRINTED WIRING BOARD DIAGRAM
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