DOWNLOAD Sharp R-741M (serv.man2) Service Manual ↓ Size: 379.78 KB | Pages: 22 in PDF or view online for FREE

Model
R-741M (serv.man2)
Pages
22
Size
379.78 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven
File
r-741m-sm2.pdf
Date
PREV: Sharp R-741M Service Manual

Sharp R-741M (serv.man2) Service Manual ▷ View online

13
741M -
Figure O-1 Oven Schematic
Note:
AC CORD CONNECTION
BRN : BROWN
BLU : BLUE
G-Y : GREEN AND
YELLOW STRIPE
/15 : SECTIONAL AREA
OF 1.5mm
2
MIN
Indicates components
with potential above 250 V.
  WIRING DIAGRAM
F2:
FUSE
SWITCH
LATCH
MONITOR
SWITCH
MONITORED
-130 C
F
H.V.
SW3:
F8A
SW
*INDICATES PARTS WITH POTENTIALS OVER 240V
*
*
*
*
*
230-240V     50Hz
GRN
RED
SW2:
SW1:
BLK
WHT
/18
/18
BRN
BRN
RED
/18
RED
BLU
BLU
/18
WHT
/18
WHT
M
T
T
WHT
GRILL
THERMAL
CUT-OUT
150C
/18
ORG
BLK
/18
BLU
/18
BLK
/18
BRN
GRY
/16
BLU
BLU
OL
/18
RED
FM
OVEN
THERMAL
CUT OUT
160 C
/16
WHT
125 C
CUT OUT
THERMAL
MAG
GRILL HEATER
B1
B2
STOP
RY1
NO.
COM.
NO.
A3
A1
A5
RY2
RY3
H.V.
H.V.
F1:
EARTH
N
L
BLU
BRN
/15
/15
G-Y/15
FUSE
0.22
/250V
NOISE SUPPRESSION COIL
10M/0.5W
680K/0.5W
0.0047 /250V
0.0047 /250V
MAGNETRON
RECTIFIER
POWER TRANSFORMER
H.V.
CAPACITOR
ASYMMETRIC
RECTIFIER
2100VAC
15A
1.07
14
741M -
Figure S-2. Control Panel Circuit
+
–
A 3
I-1
IZA918DR
LIQUID CRYSTAL DISPLAY
Q1
DTA143ES
Q24
DTA143ES
Q2
DTA123ES
Q40
DTA143ES
AC230-240V
50Hz
OVEN LAMP
FAN MOTOR
TURNTABLE
MOTOR
HEATER
MICRO  
Q22
DTB143ES
Q21
DTB143ES
C20
10
µ
/50v
C21
0.1
µ
/50v
CF1
CST4.00MGW
R1
510 1w 
R2
510 1w 
GND
VC
C3
0.1
µ
/50v
Q20
2SB1238
Q3
2SB1238
Q23
DTD143ES
R22
91 1/2w
R20 1k
D23
DOOR SWITCH
NOTE
: IF NOT SPECIFIED,  1/4w 
±
 5%
D30
D21
D20
C1 0.1
µ
/50v
C2 1000
µ
/35v
C6 10
µ
/50v
C7 0.1
µ
/50v
C12 0.1
µ
/50v
C5
R21 4.7k
VRS1
10G471K
R3 4.7k
R60 4.7k
R53
4.7k
CR61
CR62
CR63
CR64
R10
1M
C11
0.1
µ
/
50v
R5  240
R40 3.3k
R4 4.7k
ZD1
HZ5C-2
ZD20
HZ20-1
ZD2
HZ4A2
C4
D22
C30
R31
4.7k
RY1
a
b
(J1)
c
d
D2
D4
LD4 LD3 LD2 LD1
D1
D3
WH-1
WH-2
SP1
1
4
6
8
T1
RY2
R30 15k
SW60
START
AUTO
MINUTE
STOP/
CLEAR
AUTO COOK/
DEFROST
MICRO GRILL
DUAL
SW61
SW63
SW62 
SW64
10min
WH-3
1min
10sec
SW65
SW66 
(C50)
(C51)
RY3
A 5
NO
COM
B 1
B 2
A 1
+
–
+
–
+
–
NO
COM
J3
C60 0.1
µ
/50v
J5
J7
J9
J2
J4
J6
J8
S12
C3
C2
C1 
S11
S10
S9
S8
S7
S6
S5
S4
S3
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
VC3
17
18
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
19
20
21
22
23
24
25
26
27
28
29
30
31
32
XRESET
XTEST
NC
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
COM3
COM2
VSS
OSC1
OSC2
VD1
VDD
AVDD
AVREF
AVSS
NC
NC
R40
R41
R42
R43
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
BZ
NC
COM1
COM0 
K03
K02
INT1
INT0
P23
P22
P21
P20
R03
R02
R01
R00
VC2
VC1
NC
NC
NC
NC
NC
NC
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
S2
S1
: IF NOT SPECIFIED,  1SS270A
: IF NOT SPECIFIED,  0.01
µ
 / 16v
WIRING DIAGRAM
15
741M -
Figure S-3. Printed Wiring Board
LD1
LD2
LD3
R8
WH - 2
C11
C50
C51
R50
R2
R1
D2
D1
D3
D4
CN- B
R51
R60
R52
R53
MICRO
RY3
RY2
D22
VRS1
D20
WH - 3
WH - 3
SW66
SW65
SW64
C
B
A
5
1
AC
CN - A
OL/FM
/TTM
R31
7
1
2
D30
B
E
Q22
D23
10
12
18
11
R21
(J10)
R3
6
8
C12
(J3)
(J5)
(J7)
(J9)
(J8)
Q2
Q24
Q20
ZD2
E
E
E
B
B
R10
IC1
48
33
32
17
16
1
49
64
R68
R67
R66
R65
2
R64
R63
R62
R61
CF1
C10
13
1
11
2
R30
16
15
14
C30
C5
C4
C2
C1
C6
C21
C3
C20
R20
(J11)
(J1)
S
P
R22
D21
RY1
T1
ZD20
GRILL
SW50
C7
R4
R40
SP1
Q21
Q23
F
Q1
R3
R5
ZD1
(J6)
(J4)
(J2)
Q40
Q3
B
B
E
E
B
B
B
E
E
E
5
4
9
SW63
SW62
SW61
SW60
C8
C9
CR60
CN - G
17
R7
R9
LD4
C1
S1
WH - 1
WH - 1
WH - 2
DIP
WIRING DIAGRAMS
16
741M -
Note:
The parts marked “*” are used in voltage more than 250V.
The parts marked "
∆
" may cause undue microwave exposure
“§” MARK: SPARE PARTS-DELIVERY SECTION
ELECTRIC PARTS
*
REF NO
PART NO
§
DESCRIPTION
QTY
CODE
C
RC-QZA239WRE0
U
High voltage capacitor
1
AX
FM
RMOTEA361WRE0
U
Fan motor
1
AT
F1
QFS-CA025WRE0
U
F8A Fuse
1
AB
F2
QFS-BO019MRE0
U
Fuse 15A
1
AC
GH
FHET-A041WRK1
U
Grill heating element assembly
1
BB
*
MG
RV-MZA264WRE0
U
Magnetron
1
BK
OL
RLMPTA066WRE0
U
Oven lamp
1
AK
SW1
QSW-MA131WRE0
J
Monitored latch switch
1
AK
SW2
QSW-MA133WRE0
J
Monitor switch
1
AN
SW3
QSW-MA131WRE0
J
Stop switch
1
AK
*
T
RTRN-A002URE1
U
Power transformer
1
BH
TC1
RTHM-A098WRE0
U
Thermal cut-out
125
°C (Magnetron)
1
AH
TC2
RTHM-A100WRE0
U
Thermal cut-out
160
°C (Oven)
1
AH
TC3
RTHM-A082WRE0
U
Thermal cut-out
150
°C (Grill)
1
AL
TTM
FMOTDA057WRK0
J
Turntable motor assembly
1
AR
*
1-1
FH-DZA035WRE0
U
H.V. rectifier assembly
1
AP
1-2
FPWBFA309WRE1
U
Noise filter
1
AT
1-3
QACCBA004URE1
U
Power supply cord
1
AT
CABINET PARTS
REF NO
PART NO
§
DESCRIPTION
QTY
CODE
2-1
GCABUA469WRT0
U
Outer case cabinet (W)
1
AX
2-2
GLEGPA028WRE0
U
Foot
4
AA
2-3
GDAI-A219WRP5
U
Base Plate
1
AS
*
*
*
∆
∆
∆
∆
*
CONTROL PANEL PARTS
REF NO
PART NO
§
DESCRIPTION
QTY
CODE
3- 1
DPWBFB845WRK0
U
Control unit
1
BF
3- 1A
QCNCMA430DRE0
U
3-pin connector (CN-A)
1
AC
3- 1B
QCNCMA414DRE0
U
2-pin connector (CN-B)
1
AB
3- 1C
FW-VZA247DRE0
U
4pin lead wire (WH-3)
1
AE
3- 1D
RLCDSA036DRE0
U
Liquid crystal display
1
AK
3- 1E
LHLD-A196WRF0
U
LED holder
1
AE
3- 1F
PSHEPA569WRE0
U
LED sheet
1
AC
3- 1G
QW-QZA003URE0
U
Lead wire (WH-1, WH-2)
2
AB
C1
RC-KZA087DRE0
U
Capacitor     0.1 uF    50V
1
AB
C2
VCEAB31VW108M
U
Capacitor    1000 uF    35V
1
AF
C3
RC-KZA087DRE0
U
Capacitor     0.1 uF    50V
1
AB
C4-5
VCKYD41CY103N
U
Capacitor    0.01 uF    16V
2
AA
C6
RC-EZA322DRE0
U
Capacitor      10 uF    35V
1
AB
C7
RC-KZA087DRE0
U
Capacitor     0.1 uF    50V
1
AB
11-12
RC-KZA087DRE0
U
Capacitor     0.1 uF    50V
2
AB
C20
RC-EZA322DRE0
U
Capacitor      10 uF    35V
1
AB
C21
RC-EZA302DRE0
U
Capacitor     0.1 uF    50V
1
AB
C30
VCKYD41CY103N
U
Capacitor    0.01 uF    16V
1
AA
C60
RC-KZA087DRE0
U
Capacitor     0.1 uF    50V
1
AB
CR61-64
VCKYD41CY103N
U
Capacitor    0.01 uF    16V
4
AA
CF1
RCRS-A012DRE0
U
Ceramic resonator (CST4.00MGW)
1
AD
D1-4
VHD11ES1//-1
U
Diode (11ES1)
4
AB
D20-23
VHD1SS270A/-1
U
Diode (1SS270ATA)
4
AA
D30
VHD1SS270A/-1
U
Diode (1SS270ATA)
1
AA
I-1
RH-IZA918DRE0
U
LSI
1
AS
LD1-4
VHPSLZ781C9-3
U
Light emitting diode
4
AC
Q1
VSDTA143ES/-3
U
Transistor (DTA143ES)
1
AB
Q2
VSDTA123ES/-3
U
Transistor (DTA123ES)
1
AB
  PARTS LIST
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