R-4G75M (serv.man5). Section 4 Circuit diagrams (page 30-34) - Sharp Home Appliance Service Manual (repair manual)

r-4g75m (serv.man5) service manual
Model
R-4G75M (serv.man5)
Pages
5 Few pages! See other manuals at the bottom of the first or last page.
Size
192.64 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Section 4 Circuit diagrams (page 30-34)
File
r-4g75m-sm5.pdf
Date

Read Sharp R-4G75M (serv.man5) Service Manual online

30
R-4G75(W)M
R-4G75(B)M
SCEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. CLOCK APPEARS ON DISPLAY
NOTE:  * Parts with potentials above 250V
SCEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED.
3. START KEY TOUCHED
Figure O-1. Oven Schematic-OFF Condition
NOTE:  * Parts with potentials above 250V
Figure O-2. Oven Schematic-Microwave Cooking Condition
240V~50Hz
BLU / 15
BRN / 15
G–Y / 15
EARTH
0.22µ / 250V
FUSE 13A 
NOISE SUPPRESSION COIL
10M / 0.5W
680K / 0.5W 
0.0047µ / 250V
0.0047µ / 250V
THERMAL
CUT-OUT
160°C 
(OVEN)
MONITOR 
RESISTOR
0.8 / 20W
OVEN LAMP
FM
TURNTABLE MOTOR
FAN MOTOR
THERMAL
CUT-OUT
130°C~150°C
(GRILL)
2ND
LATCH
SWITCH
THERMAL
CUT-OUT
125°C (MG.)
STOP
SWITCH
* HIGH VOLTAGE TRANSFORMER
* ASYMMETRIC
  RECTIFIER
* CAPACITOR
  1.2µ
  AC2100V
* H.V. RECTIFIER
 * MAGNETRON
OL
L
N
GRILL HEATING ELEMENT
B2
B1
A1
COM
COM
RY-3
RY-2
NOISE
FILTER
MONITOR SWITCH
A3
FUSE
M8A
N.O
N.O
TTM
A5
RY-1
PRIMARY
LATCH
SWITCH
THERMAL
CUT-OUT
125°C 
(MAG.)
F1
F2
F3
AH. SENSOR
CONTROL UNIT
240V~50Hz
BLU / 15
BRN / 15
G–Y / 15
EARTH
0.22µ / 250V
FUSE 13A 
NOISE SUPPRESSION COIL
10M / 0.5W
680K / 0.5W 
0.0047µ / 250V
0.0047µ / 250V
THERMAL
CUT-OUT
160°C 
(OVEN)
MONITOR 
RESISTOR
0.8 / 20W
OVEN LAMP
FM
TURNTABLE MOTOR
FAN MOTOR
THERMAL
CUT-OUT
130°C~150°C
(GRILL)
2ND
LATCH
SWITCH
THERMAL
CUT-OUT
125°C (MG.)
STOP
SWITCH
* HIGH VOLTAGE TRANSFORMER
* ASYMMETRIC
  RECTIFIER
* CAPACITOR
  1.2µ
  AC2100V
* H.V. RECTIFIER
 * MAGNETRON
OL
L
N
GRILL HEATING ELEMENT
B2
B1
A1
COM
COM
RY-3
RY-2
NOISE
FILTER
MONITOR SWITCH
A3
FUSE
M8A
N.O
N.O
TTM
A5
RY-1
PRIMARY
LATCH
SWITCH
THERMAL
CUT-OUT
125°C 
(MAG.)
F1
F2
F3
AH. SENSOR
CONTROL UNIT
31
R-4G75(W)M
R-4G75(B)M
Figure O-4. Oven Schematic-Dual Cooking Condition
SCEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. GRILL KEY TOUCHED
4. START KEY TOUCHED
NOTE:  * Parts with potentials above 250V
Figure O-3. Oven Schematic-Grill Condition
NOTE:  * Parts with potentials above 250V
SCEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. DUAL COOK KEY TOUCHED
4. START KEY TOUCHED
240V~50Hz
BLU / 15
BRN / 15
G–Y / 15
EARTH
0.22µ / 250V
FUSE 13A 
NOISE SUPPRESSION COIL
10M / 0.5W
680K / 0.5W 
0.0047µ / 250V
0.0047µ / 250V
THERMAL
CUT-OUT
160°C 
(OVEN)
MONITOR 
RESISTOR
0.8 / 20W
OVEN LAMP
FM
TURNTABLE MOTOR
FAN MOTOR
THERMAL
CUT-OUT
130°C~150°C
(GRILL)
2ND
LATCH
SWITCH
THERMAL
CUT-OUT
125°C (MG.)
STOP
SWITCH
* HIGH VOLTAGE TRANSFORMER
* ASYMMETRIC
  RECTIFIER
* CAPACITOR
  1.2µ
  AC2100V
* H.V. RECTIFIER
 * MAGNETRON
OL
L
N
GRILL HEATING ELEMENT
B2
B1
A1
COM
COM
RY-3
RY-2
NOISE
FILTER
MONITOR SWITCH
A3
FUSE
M8A
N.O
N.O
TTM
A5
RY-1
PRIMARY
LATCH
SWITCH
THERMAL
CUT-OUT
125°C 
(MAG.)
F1
F2
F3
AH. SENSOR
CONTROL UNIT
240V~50Hz
BLU / 15
BRN / 15
G–Y / 15
EARTH
0.22µ / 250V
FUSE 13A 
NOISE SUPPRESSION COIL
10M / 0.5W
680K / 0.5W 
0.0047µ / 250V
0.0047µ / 250V
THERMAL
CUT-OUT
160°C 
(OVEN)
MONITOR 
RESISTOR
0.8 / 20W
OVEN LAMP
FM
TURNTABLE MOTOR
FAN MOTOR
THERMAL
CUT-OUT
130°C~150°C
(GRILL)
2ND
LATCH
SWITCH
THERMAL
CUT-OUT
125°C (MG.)
STOP
SWITCH
* HIGH VOLTAGE TRANSFORMER
* ASYMMETRIC
  RECTIFIER
* CAPACITOR
  1.2µ
  AC2100V
* H.V. RECTIFIER
 * MAGNETRON
OL
L
N
GRILL HEATING ELEMENT
B2
B1
A1
COM
COM
RY-3
RY-2
NOISE
FILTER
MONITOR SWITCH
A3
FUSE
M8A
N.O
N.O
TTM
A5
RY-1
PRIMARY
LATCH
SWITCH
THERMAL
CUT-OUT
125°C 
(MAG.)
F1
F2
F3
AH. SENSOR
CONTROL UNIT
32
R-4G75(W)M
R-4G75(B)M
1
2
3
4
5
6
1
2
3
4
5
6
H
G
F
E
D
C
B
A
H
G
F
E
D
C
B
A
Figure S-1. Pictorial Diagram
MONITOR
RESISTOR
THERMAL
CUT-OUT
160°C (OVEN)
OVEN LAMP 
& SOCKET
3
2
ORG
1
THERMAL
CUT-OUT
125°C(MG)
 FAN MOTOR
BLU
RED
BLU
BLU
BRN
HIGH VOLTAGE COMPONENTS
H.V.WIRE B
MG: 
MAGNETRON
H.V.WIRE A
C: H.V.
H.V.
RECTIFIER
ASYMMETRIC RECTIFIER
T: HIGH VOLTAGE
    TRANSFORMER
G–Y
BLU
BRN
NOISE FILTER
POWER SUPPLY CORD
BLK
RED
GRN
RED
2
1
BLU
WHT
WHT
PNK
ORG
NO
2ND
LATCH
SWITCH
STOP SWITCH
NO
NC
PRIMARY
 LATCH
SWITCH
NO
COM
GRILL 
HEATER
CAPACITOR
ORG
RED
GRY
1
2
ORG
3
4
5
RED
CN-A
CN-A
1
3
CN-F
1 3 5
COM
NO
BLK
RED
BRN
PNK
CN-B
RY3
RY2
RED
ORG
CONTROL PANEL
WHT
CN-B
RY1
GRN
GRN
COM
NO
RED
ORG
MONITOR
SWITCH
GRN
WHT
G
R
Y
W
H
T
R
E
D
R
E
D
W
H
T
W
H
T
B
R
N
O
R
G
R
E
D
R
E
D
THERMAL
CUT-OUT
150°C (GRILL)
TURNTABLE
MOTOR
RED
W
H
T
R
E
D
RED
BRN
WHT
3
2
BLK
1
RED
CN-F
AH. SENSOR
RED
WHT x 2
M8A
13A
NOISE FILTER
N
L
ORG
33
R-4G75(W)M
R-4G75(B)M
1
2
3
4
5
6
1
2
3
4
5
6
H
G
F
E
D
C
B
A
H
G
F
E
D
C
B
A
AC240V
   50Hz
TURN TABLE
MOTOR
OVEN LAMP
FAN MOTOR
POWER
TRANS-
FORMER
GRILL
HEATER
DOOR
SENSING
SWITCH
COM.
COM.
N.O.
N.O.
A-3
A-5
A-1
B-1
B-2
D98
R98
D97
R97
D96
D95
R95
D93
R93
D91
R91
R96
G-8
G-7
G-6
G-5
G-4
G-3
G-2
G-1
G-9
G-10
G-11
G-12
STOP
/CLEAR
AUTO
START
KEY UNIT
10
SEC.
10
MIN.
1
MIN.
Kg / Lb
TIMER
/HOLD
INSTANT
COOK
AUTO
MINUTE
/START
MORE
LESS
AUTO
COOK
AUTO
DEFROST
Kg • Lb
g • oz
POWER
LEVEL
DUAL
COOK
GRILL
P30
P31
P32
P33
P34
P35
P36
P37
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
VCC
VEE
AVSS
VREF
P67
P66
P65
P64
P63
P62
P61
P60
P55
P54
P53
P52
P51
P50
P47
P46
P45
P44
P43
P42
P41
P40
RESET
P71
P70
XIN
XOUT
VSS
64
33
1
32
IC-1   IZA534DR
VRS1
(J1)
a
b
c
d
F1
T1
S2
S1
P
6
1
2
3
4
5
D1 S1NB10
C1 0.1µ/50V
47µ/25V X 2
+
-
-
+
C20 
0.1µ/50V
R1 4.3K
ZD1
HZ6A-3
+
-
-
+
R2 1.5K
ZD2 HZ16-1
R3 620 1W
Q1 2SB793
C12
C11
C13
C14
0.015µ/25V X 2
R4 
750 1/2W
R20 15K
+
-
C5 47µ/16V
C20
C6
R5 1K
C7
Q30
2SA933S
ZD3
 RD4.3ESB2
R6 15K
C9 0.1µ/50V
IC-2  IZA310DR
F-1
F-2
F-3
AH SENSOR
RY1
RY2
D61
D81
D82
D83
C60
D60
R61
100
R60 5.1K
Q81 DTD143ES
Q82 DTB143ES
Q83 DTB143ES
C81 
4.7µ/35V
Q80 DTA114YS
R80 470
VC
Q20 DTA143ES
+
-
C80 
0.1µ/50V
(J9)
(J7)
(J5)
(J3)
(J8)
(J6)
(J4)
(J2)
VP
VA
R50 330 1W
(A)
(B)
(C)
11
2
(A)
(B)
(C)
VA
Q40 DTA143ES
SP40
R40 3.3K
CF1
CST4.00MGW
C16 47µ/16V
+
-
CR90
C17
C2 1000µ/35V
CONTROL UNIT
26
25
23
22
21
20
19
18
17
16
15
14
13
12
10
9
8
7
6
5
4
2
1
1
F
B
L
1
F
G
5
G
6
G
4
G
3
G
2
G
1
C
N
a
b
c
d
e
f
g
h
i
j
k
B
U
2
F
2
F
VF2
VF1
NOTE
: IF NOT SPECIFIED, 1/4W ± 5%
: IF NOT SPECIFIED, 1SS270A
: IF NOT SPECIFIED, 0.01µF/16V
SENSOR
AUTO
GRILL
COOK
DEFROST
VC
10K X 6
Figure S-2. Control Panel Circuit
RY3
VA
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Here you can read online and download Sharp R-4G75M (serv.man5) Service Manual in PDF. R-4G75M (serv.man5) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp R-4G75M (serv.man5) Microwave Oven. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.