Sharp R-8740 (serv.man17) Service Manual ▷ View online
R-8740M - 41
Figure S-3. Printed Wiring Board
PRINTED WIRING BOARD DIAGRAM
6
1
1
1
6
2
1
2
WH - C
WH - A
WH - A
CN - C
6
(J3)
(R11)
(J5)
(J2)
7
8
9
8
9
10
R7
1
80
65
64
41
40
25
24
I - 1
R6
C90
C91
C30
C6
C5
C4
ZD2
D20
B
E
Q1
Q1
C1
C2
ZD1
C92
R92
R95
R93
R97
R68
R69
R69
R70
R71
R72
R71
R72
R73
R4
R5
R10
13
14
15
R74
R31
D30
D26
17
18
18
21
E
Q20
RY5
R9
22
D27
D23
D21
ZD3
MICRO
23
25
RY7
RY2
RY3
RY1
COM
UH
FM
CM
LH
(J1)
B
R30
R98
R75
R96
11
E
E
(Q83)
(Q82)
R84
R83
LD9
LD8
LD7
1
LD6
LD4
LD3
LD2
LD1
B
B
(J10)
B
BE
(Q80)
R81
R82
2
R8
I - 2
12
R94
R12
CF1
R90
PWR
VRS1
T1
P
1
3
5
7
9
11
86
4
1
RY6
RY4
AC
D25
D22
D24
PWR
FM
CM
LH
CN - A
F
(J9)
R40
R2
R1
16
CR60
C20
20
24
B
B
B
B
B
B
B
B
E
E
E
E
E
E
E
E
Q3
Q27
Q26
Q21
Q22
Q24
Q23
Q25
C21
19
C3
D4
D2
D1
D3
E
E
Q2
Q40
SP1
B
B
B
Q4
E
CN - G
CN - B
CN - D
1
12
1
1
2
3
(J7)
C7
(J6)
(J8)
(J4)
3
4
5
(Q81)
E
R-8740M - 42
PARTS LIST
Note: The parts marked "
∆
" may cause undue microwave exposure. / The parts marked "*" are used in
voltage more than 250V. / "§" Mark: Spare parts delivery section
REF. NO.
PART NO.
§
DESCRIPTION
Q'TY CODE
*
*
*
∆
*
3- 1
DPWBFC151WRKZ
U
Control unit
1
BC
3- 1A
QCNCMA443DRE0
U
6-pin connector (CN-A)
1
AC
3- 1B
QCNCMA414DRE0
U
2-pin connector (CN-B)
1
AB
3- 1C
QCNCMA330DRE0
U
6-pin connector (CN-C)
1
AB
3- 1D
QCNCMA434DRE0
U
2-pin connector (CN-D)
1
AB
3- 1E
RLCDSA036DRE0
U
Liquid crystal display
1
AP
3- 1F
LHLD-A196WRF0
U
LCD holder
1
AB
3- 1G
PSHEPA569WRE0
U
LED sheet
1
AC
3- 1H
FW-VZA240DRE0
U
2-pin harness (WH-A)
1
AA
3- 1I
QCNCWA057DRE0
U
12-pin connector (CN-G)
1
AF
3- 1J
FW-VZA242DRE0
U
6-pin harness (WH-C)
1
AF
C1
RC-KZA087DRE0
U
Capacitor 0.1 uF 50V
1
AB
C2
VCEAG31VW108M
U
Capacitor 1000 uF 35V
1
AE
C3
RC-KZA087DRE0
U
Capacitor 0.1 uF 50V
1
AB
C4-5
VCKYD41CY103N
U
Capacitor 0.01 uF 16V
2
AA
C6
VCEAG31VW106M
U
Capacitor 10 uF 35V
1
AB
C7
RC-KZA087DRE0
U
Capacitor 0.1 uF 50V
1
AB
C20
RC-KZA087DRE0
U
Capacitor 0.1 uF 50V
1
AB
C21
VCEAG31VW106M
U
Capacitor 10 uF 35V
1
AB
C30
VCKYD41CY103N
U
Capacitor 0.01 uF 16V
1
AA
C90
VCKYD41CY103N
U
Capacitor 0.01 uF 16V
1
AA
C91
VCEAG31VW106M
U
Capacitor 10 uF 35V
1
AB
C92
VCKYD41CY103N
U
Capacitor 0.01 uF 16V
1
AA
CF1
RCRS-A012DRE0
U
Ceramic resonator (CST4.00MGW)
1
AD
CR60
RMPTEA011DRE0
U
CR array
1
AG
D1-4
VHD1N4005E1-2
U
Diode (1N4005)
4
AB
D21-25
VHD1SS270A/-1
U
Diode (1SS270A)
5
AA
D26
VHD1N4005E1-2
U
Diode (1N4005)
1
AB
D27
VHD1SS270A/-1
U
Diode (1SS270A)
1
AA
D30
VHD1SS270A/-1
U
Diode (1SS270A)
1
AA
I-1
RH-IXA091DRZZ
U
LSI
1
AX
Q24-25
VSDTA143ES/-3
U
Transistor (DTA143ES)
2
AB
Q26-27
VSDTA143ES/-3
U
Transistor (DTA143ES)
2
AB
Q40
VSDTA143ES/-3
U
Transistor (DTA143ES)
1
AB
R1-2
VRS-B13AA361J
U
Resistor 360 ohm 1W
2
AA
R4-5
VRD-B12EF472J
U
Resistor 4.7k ohm 1/4W
2
AA
R6-8
VRD-B12EF103J
U
Resistor 10k ohm 1/4W
3
AA
R9
VRD-B12EF102J
U
Resistor 1.0k ohm 1/4W
1
AA
R10
VRD-B12EF241J
U
Resistor 240 ohm 1/4W
1
AA
R12
VRD-B12EF472J
U
Resistor 4.7k ohm 1/4W
1
AA
∆
CONTROL PANEL PARTS
ELECTRIC PARTS
1- 1
FH-HZA075WRE0
U
Thermistor
1
AN
1- 3
QACCBA004URE3
U
Power supply cord assembly
1
AT
1- 4
FH-DZA035WRE0
U
High voltage rectifier assembly
1
AP
1- 5
QFS-CA025WRE0
U
Fuse F8A
1
AC
1- 6
QFS-BO019WRE0
U
Fuse 20A
1
AC
1- 7
RMOTEA373WRE0
U
Convection motor
1
AV
1- 8
RC-QZA252WRE0
U
High voltage capacitor
1
AP
1- 9
RTHM-A098WRE0
U
Thermal cut-out 125˚C (MG)
1
AH
1-10
RTHM-A099WRE0
U
Thermal cut-out 150˚C (OVEN)
1
AH
1-11
RHET-A225WRE0
U
Grill heating element
1
AR
1-12
RHET-A227WRE0
U
Bottom heater assembly
1
AW
1-13
QSW-MA147WRZZ
J
Monitored latch switch
1
AG
1-14
QSW-MA146WRZZ
J
Stop switch
1
AG
1-15
QSW-MA147WRZZ
J
Monitor switch
1
AG
1-16
FPWBFA309WRE2
U
Noise filter
1
AT
1-17
RMOTEA361WRE0
U
Fan motor
1
AT
1-18
RLMPTA066WRE0
U
Oven lamp
1
AK
1-19
RTRN-A019URE0
U
High voltage transformer
1
BF
1-20
RV-MZA243WRE1
U
Magnetron
1
BH
1-21
RMOTDA227WRE0
U
Turntable motor
1
AU
CABINET PARTS
2- 1
GCABDA001URP1
U
Back plate
1
AQ
2- 2
GCABDA002URP0
U
Sub back plate
1
AH
2- 3
GCABUW024URP0
U
Outer case cabinet
1
AX
2- 4
GDAI-A002WRP0
U
Base plate
1
AV
2- 5
GLEGPA028WRE0
U
Foot
2
AA
R-8740M - 43
Note: The parts marked "
∆
" may cause undue microwave exposure. / The parts marked "*" are used in
voltage more than 250V. / "§" Mark: Spare parts delivery section
REF. NO.
PART NO.
§
DESCRIPTION
Q'TY CODE
PARTS LIST
R30
VRD-B12EF153J
U
Resistor 15k ohm 1/4W
1
AA
R31
VRD-B12EF472J
U
Resistor 4.7k ohm 1/4W
1
AA
R40
VRD-B12EF332J
U
Resistor 3.3k ohm 1/4W
1
AA
R68-73
VRD-B12EF153J
U
Resistor 15k ohm 1/4W
6
AA
R81-84
VRD-B12EF152J
U
Resistor 1.5k ohm 1/4W
4
AA
R90
VRN-B12EK304F
U
Resistor 300k ohm ±1% 1/4W
1
AA
R92
VRD-B12EF153J
U
Resistor 15k ohm 1/4W
1
AA
R93
VRN-B12EK123F
U
Resistor 12k ohm ±1% 1/4W
1
AA
R94
VRD-B12EF101J
U
Resistor 100 ohm 1/4W
1
AA
R95
VRD-B12EF153J
U
Resistor 15k ohm 1/4W
1
AA
R96
VRD-B12EF272J
U
Resistor 2.7k ohm 1/4W
1
AA
R97
VRD-B12EF103J
U
Resistor 10k ohm 1/4W
1
AA
R98
VRN-B12EK361F
U
Resistor 360 ohm ±1% 1/4W
1
AA
RY1
RRLY-A076DRE0
U
Relay (OMIF-S-124LM)
1
AK
RY2
RRLY-A122DRZZ
U
Relay (VRB18SP)
1
AP
RY3
RRLY-A076DRE0
U
Relay (OMIF-S-124LM)
1
AK
RY4
RRLY-A115DRE0
U
Relay (JV-24S-KT)
1
AG
RY5
RRLY-A080DRE0
U
Relay (OJ-SH-124LM)
1
AG
RY7
RRLY-A080DRE0
U
Relay (OJ-SH-124LM)
1
AG
SP1
RALM-A014DRE0
U
Buzzer (PKM22EPT-THAI)
1
AG
T1
RTRNPA105DRE0
U
Transformer
1
AR
VRS1
RH-VZA032DRE0
U
Varistor (10G471K)
1
AC
ZD1
VHEHZ5C2///-1
U
Zener diode (HZ5C2)
1
AB
ZD2
VHEHZ4A2///-1
U
Zener diode (HZ4A2)
1
AB
ZD3
VHEHZ201///-1
U
Zener diode (HZ20-1)
1
AB
3- 2
HPNLCS004URR0
U
Control panel
1
AN
3- 3
JBTN-A049URF0
U
Open button(black)
1
AE
3- 4
MSPRCA045WRE0
U
Open button spring
1
AA
3- 5
FUNTKC124URE0
U
Key unit
1
AR
3- 6
GMADIA020URR0
U
Display window
1
AH
3- 7
XEPSD30P10XS0
U
Screw; 3mm x 10mm
6
AA
3- 8
GCOVHA017URF0
U
Key fixing frame
1
AH
4- 1
DOVN-A017URK0
U
Oven cavity
1
BG
4- 2
LBNDKA107WRP1
U
Capacitor holder
1
AD
4- 3
FDUC-A003URY0
U
Rear air duct assy
1
AL
4- 4
LANGQA005URP0
U
Air separate angle
1
AC
4- 5
PDUC-A636WRP1
U
Air guide duct
1
AM
4- 6
PFILWA001URP0
U
Lamp filter
1
AB
4- 7
PHOK-A078WRF5
U
Latch hook assy
1
AH
4- 8
LANGQA014URP0
U
Turntable motor angle
1
AE
4- 9
PCUSUA019URE0
U
Cushion
1
AA
4-10
FANGTA003URY0
U
Turntable motor shaft assembly
1
AL
4-11
PPACGA002URE0
U
Seal packing
1
AB
4-12
NFANJA038URE0
U
Fan blade
1
AF
4-13
PDUC-A637WRF2
U
Fan duct
1
AL
4-14
NFANMA002URP0
U
Cooling fan
1
AF
4-15
GCOVHA001URP1
U
Bottom heater cover
1
AM
4-16
LANGFA155WRP7
U
Chassis support
1
AF
4-17
PPACGA001URE0
U
Heater packing
1
AD
4-18
LANGQA008URP0
U
Grill heater angle
2
AD
4-19
MLEVPA001URF3
U
Open lever
1
AE
4-20
PSPAGA001WRE0
U
Vibration proof cushion
1
AA
4-21
PCUSUA006URE0
U
Air cushion B
1
AA
4-22
PCOVQA002URP0
U
Heater cover
2
AD
4-23
PCOVPA308WRE1
U
Waveguide cover
1
AE
4-27
PDUC-A606WRF1
U
Air intake duct
1
AK
4-28
PDUC-A008URP0
U
Exhaust duct
1
AK
4-29
PSKR-A308WRF0
U
Rear barrier
1
AH
4-31
PCUSUA012URE0
U
Air defrect cushion
1
AB
4-32
LANGQA004URP0
U
Convection air angle
2
AN
4-33 PDUC-A003URP0 U
Convection duct
1 AL
4-34 PFPF-A001URE0 U
Heat intercept
1 AG
4-35 PCOVQA001URP0 U
Rear heat cover
1 AP
4-36 PPIP-A001UR10 U
Pipe
1 AE
4-37 PCUSUA015URE0 U
Back plate cushion
1 AA
4-38 NFANMA001URP0 U
Convection fan
1 AD
OVEN PARTS
CONTROL PANEL PARTS CONTINUED
R-8740M - 44
Note: The parts marked "
∆
" may cause undue microwave exposure. / The parts marked "*" are used in
voltage more than 250V. / "§" Mark: Spare parts delivery section
HOW TO ORDER REPLACEMENT PARTS
To have your order filled promptly and correctly, please furnish the following information.
1. MODEL NUMBER
2. REF. NO.
3. PART NO.
4.DESCRIPTION
∆
∆
PARTS LIST
REF. NO.
PART NO.
§
DESCRIPTION Q'TY CODE
*
DOOR PARTS
5- 1
DDORFA766WRK0 U Door panel assembly 1 BE
5- 2
GWAKPS002URR0 U Door frame 1 AW
5- 3
LSTPPA147WRF1 U Latch head 1 AE
5- 4
LSTPPA012URF1 U Glass stopper 1 AB
5- 5
MSPRTA141WRE0 U Latch spring 1 AA
5- 6
PGLSPA020URR0 U Front door glass 1 AX
5- 7
XEBSD30P06000 U Screw : 3mm x 6mm 6 AA
5- 8
GCOVHA365WRF3 U Choke cover 1 AM
5- 9
PCUSGA011URP0 U Heat deflector cushion 1 AG
MISCELLANEOUS
6- 2
LHLDKA008WRF1 U P. clip 1
AA
6- 4
CTNT-A002URK0 U Turntable tray assy 1
AY
6- 5
FW-VZA031URE0 U Stop switch harness 1
AE
6- 7
QW-QZA210WRE1 U High voltage wire B 1
AD
6- 8
FW-VZA086URE0 U Main harness 1
AX
6-10
TINS-A266URR0 U Operation manual 1
AH
6-11
JHNDMA028WRT0 U Tray handle 1
AL
SCREWS, NUTS AND WASHERS
7- 1
XHPSD40P08K00 U Screw : 4mm x 8mm 1
AA
7- 3
XWWSD50-06000 J Washer : 4mm x 0.6mm 1
AA
7- 4
XOTSF40P10000 J Screw : 4mm x 12mm 4
AA
7- 5
LX-NZ0061WRE0 J M4 Flange nut 4
AA
7- 6
XHTSD40P08RV0 J Screw : 4mm x 8mm 6
AA
7- 8
XBTSD40P05000 U Screw : 4mm x 5mm 2
AA
7- 9
XNEUW40-32000 J Nut : 4mm x 3.2m 1
AA
7-11
XRESE40-06000 U Ring 1
AA
7-12
XWHUW40-08000 J Washer : 4mm x 0.8mm 1
AA
7-13
XWSUW40-10000 J Washer : 4mm x 1.0mm 1
AA
7-14
XEPSD40P25000 J Screw : 4mm x 25mm 2
AA
7-15
XOTWW40P06000 U Screw 4mm x 6mm 10
AA
7-16
LX-EZA045WRE0 J TTM cover screw 1
AA
7-17
XEBSD30P06000 J Screw : 3mm x 6mm 2
AA
7-18
XHPSD40P06000 U Screw : 4mm x 6mm 3
AA
7-19
XFPSD50P10KS0 J Screw : 5mm x 10mm 2
AC
7-20
LX-CZA001URE0 J Screw : 4mm x 12mm 24
AA
7-21
XBPWW30P05K00 J Screw/Washer : 3mm x 4mm 2
AA
7-22
XWHUW50-08000 U Wash : 5mm x 0.8mm 1
AA
7-23
XOTSD40P12RV0 U Screw : 4mm x 12mm 2
AA
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