DOWNLOAD Sharp R-754M (serv.man3) Service Manual ↓ Size: 133.51 KB | Pages: 6 in PDF or view online for FREE

Model
R-754M (serv.man3)
Pages
6
Size
133.51 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Part 2 Diagrams (27-32)
File
r-754m-sm3.pdf
Date
PREV: Sharp R-754M (serv.man2) Service Manual

Sharp R-754M (serv.man3) Service Manual ▷ View online

R-754M - 27
Figure O-2 Oven Schematic-Microwave cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. Door closed.
2. Cooking time set.
3. Microwave power level set.
4. START key pressed.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. Door closed.
2. Cooking mode at microwave.
3. Timer at zero.
Figure O-1. Oven Schematic-OFF Condition
Note: "     " Indicates components with potential above 250 V.
OL
TTM
OVEN  LAMP
FAN MOTOR
TURNTABLE MOTOR
GRILL HEATING ELEMENT 
H.V. RECTIFIER
MAGNETRON
HIGH VOLTAGE 
 TRANSFORMER
CAPACITOR
1.07 
µ
F
AC2100V
CONTROL UNIT
RY3
COM.
COM.
A3
A1
B2
B1 
STOP SWITCH
 MONITORED 
LATCH SWITCH
MG.
THERMAL
CUT-OUT
125˚C
OVEN
THERMAL
CUT-OUT
145˚C
MONITOR 
SWITCH
0.0047
µ
/ 250V
0.0047
µ
/ 250V
10M/ 0.5W
NOISE SUPPRESSION COIL
680 k/ 0.5W
0.22
µ
/250V
 SPECIALFUSE 20A
FUSE
F8A
NOISE FILTER
L
N
230-240V ~ 50Hz
BRN/15
BLU/15
G-Y/15
EARTH
LIVE
NEUTRAL
N.C.
N.O.
N.O.
COM.
N.O.
N.O.
N.O.
 ASYMMETRIC
 RECTIFIER
RY2
RY1
FM
OL
TTM
OVEN  LAMP
FAN MOTOR
TURNTABLE MOTOR
GRILL HEATING ELEMENT 
H.V. RECTIFIER
MAGNETRON
HIGH VOLTAGE 
 TRANSFORMER
CAPACITOR
1.07 
µ
F
AC2100V
CONTROL UNIT
RY3
COM.
COM.
A3
A1
B2
B1 
STOP SWITCH
 MONITORED 
LATCH SWITCH
MG.
THERMAL
CUT-OUT
125˚C
OVEN
THERMAL
CUT-OUT
145˚C
MONITOR 
SWITCH
0.0047
µ
/ 250V
0.0047
µ
/ 250V
10M/ 0.5W
NOISE SUPPRESSION COIL
680 k/ 0.5W
0.22
µ
/250V
 SPECIALFUSE 20A
FUSE
F8A
NOISE FILTER
L
N
230-240V ~ 50Hz
BRN/15
BLU/15
G-Y/15
EARTH
LIVE
NEUTRAL
N.C.
N.O.
N.O.
COM.
N.O.
N.O.
N.O.
 ASYMMETRIC
 RECTIFIER
RY2
RY1
FM
SCHEMATIC DIAGRAMS
R-754M - 28
Figure O-3. Oven Schematic-Grill cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. Door closed.
2. Cooking time set.
3. Grill key pressed.
4. START key pressed.
Figure O-4. Oven Schematic-Dual Cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. Door closed.
2. Cooking time set.
3. Dual Gril key pressedl.
4. START key pressed.
Note: "     " Indicates components with potential above 250 V.
OL
TTM
OVEN  LAMP
FAN MOTOR
TURNTABLE MOTOR
GRILL HEATING ELEMENT 
H.V. RECTIFIER
MAGNETRON
HIGH VOLTAGE 
 TRANSFORMER
CAPACITOR
1.07 
µ
F
AC2100V
CONTROL UNIT
RY3
COM.
COM.
A3
A1
B2
B1 
STOP SWITCH
 MONITORED 
LATCH SWITCH
MG.
THERMAL
CUT-OUT
125˚C
OVEN
THERMAL
CUT-OUT
145˚C
MONITOR 
SWITCH
0.0047
µ
/ 250V
0.0047
µ
/ 250V
10M/ 0.5W
NOISE SUPPRESSION COIL
680 k/ 0.5W
0.22
µ
/250V
 SPECIALFUSE 20A
FUSE
F8A
NOISE FILTER
L
N
230-240V ~ 50Hz
BRN/15
BLU/15
G-Y/15
EARTH
LIVE
NEUTRAL
N.C.
N.O.
N.O.
COM.
N.O.
N.O.
N.O.
 ASYMMETRIC
 RECTIFIER
RY2
RY1
FM
OL
TTM
OVEN  LAMP
FAN MOTOR
TURNTABLE MOTOR
GRILL HEATING ELEMENT 
H.V. RECTIFIER
MAGNETRON
HIGH VOLTAGE 
 TRANSFORMER
CAPACITOR
1.07 
µ
F
AC2100V
CONTROL UNIT
RY3
COM.
COM.
A3
A1
B2
B1 
STOP SWITCH
 MONITORED 
LATCH SWITCH
MG.
THERMAL
CUT-OUT
125˚C
OVEN
THERMAL
CUT-OUT
145˚C
MONITOR 
SWITCH
0.0047
µ
/ 250V
0.0047
µ
/ 250V
10M/ 0.5W
NOISE SUPPRESSION COIL
680 k/ 0.5W
0.22
µ
/250V
 SPECIALFUSE 20A
FUSE
F8A
NOISE FILTER
L
N
230-240V ~ 50Hz
BRN/15
BLU/15
G-Y/15
EARTH
LIVE
NEUTRAL
N.C.
N.O.
N.O.
COM.
N.O.
N.O.
N.O.
 ASYMMETRIC
 RECTIFIER
RY2
RY1
FM
SCHEMATIC DIAGRAMS
R-754M - 29
Figure S-1. Pictrorial Diagram
WHT
RED
OVEN THERMAL 
CUT-OUT
MG. THERMAL
 CUT-OUT
OVEN LAMP 
WHT
WHT
RED
1
BLK
2
3
RED
COM
WHT
WHT
YLW
BLK
WHT
N.C.
N.O.
N.O.
COM
STOP 
SWITCH
NO
NO
COM
COM
GRILL 
HEATING ELEMENT
RED
RED
WHT
BRN
BLU
GRN
GRN
GRN
BLK
TURNTABLE
MOTOR
MONITOR
SWITCH
MONITORED
LATCH 
SWITCH
BLK
RED
RED
WHT
YLW
YLW
RED
RED
WHT
BLK
CN-A
1
CN-B
2
RED
GRN
RED
WHT
RED
BLK
NOISE FILTER
L
TP
F 8 A
F2:
TL
RED
F1: 20 A
WHT
N
RED
RED
YLW
WHT
WHT
RED
FAN 
MOTOR
WHT
HIGH VOLTAGE COMPONENTS
G
–
Y
POWER SUPPLY CORD
NEUTRAL
LIVE
EARTH
CN-B
CN-C
CN-C
CN-G
IC1
SP1
2
1
11
3
1
RY2
NO
COM
RY1
NO
COM
RY3
POWER UNIT
CPU UNIT
CN-A
T1
3
MAGNETRON
H.V.WIRE B
H.V. 
CAPACITOR
H.V.
RECTIFIER
ASYMMETRIC RECTIFIER
HIGH VOLTAGE
TRANSFORMER
YLW
RED
WHT
BLK
YLW
BLK
PICTORIAL DIAGRAM
R-754M - 30
+
–
B 1
C 1
C 2
C 3
C 4
C 6
C 7
C 5
C 8
C 9
C11
C12
B 2
A 1
A 3
NO
COM
NO
COM
STOP
SWITCH
STOP
SWITCH
NC
GND
VC
BUZZER
VR
INT
CN-C
13 WIRE HARNESS
AC230-240V
50Hz
OVEN LAMP
TURNTABLE
MOTOR
FAN MOTOR
HIGH
VOLTAGE
TRANSFORMER
GRILL
HEATING
ELEMENT
R3
130 1w
D1
S1NB10
R1 430 2w
R2 470 1w
T1
3
1
4
6
GND
a
b
c
d
VRS1
C1 470
µ
/50v
SP1
(J1)
10G471K
RY1
RY3
C10
C13
NO
COM
RY2
CN-B
CN-A
Figure S-2. Power Unit Circuit
POWER UNIT CIRCUIT DIAGRAM
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  • DOWNLOAD Sharp R-754M (serv.man3) Service Manual ↓ Size: 133.51 KB | Pages: 6 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp R-754M (serv.man3) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp R-754M (serv.man3) Microwave Oven. Information contained in Sharp R-754M (serv.man3) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.

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