R-879SL (serv.man12). Circuit Diagrams — Sharp Home Appliance Service Manual (repair manual)

Model
R-879SL (serv.man12)
Pages
8
Size
580.1 KB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / Microwave Oven / Circuit Diagrams
File
r-879sl-sm12.pdf
Date

View Sharp R-879SL (serv.man12) Service Manual online

R879(W)
13 – 1
R879(W)
Service Manual
 
CHAPTER 13. 
CIRCUIT DIAGRAMS
[1] Oven Schematic
Figure O-1(a) Oven Schematic-OFF Condition right after the oven is plugged in.
Figure O-1(b) Oven Schematic-OFF Condition when the oven door is opened.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED. 
2. PLUGGED IN OVEN.
3. NOTHING APPEARS ON DIS PLAY.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. “ENERGY SAVED MODE TO CANCEL ENERGY SAVED MODE SET THE CLOCK” APPEARS ON DISPLAY.
NOTE: "
" indicates components with potentials above 250V
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
MOTOR
TURNTABLE
MOTOR
TOP
G
RILL
HEATING
ELEMENT
BOTTOM
H
EATING
ELEMENT
H.V.
R
ECTIFIER
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
T/C
TRANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
UNIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
250V
10M/
0.5W
NOISE
S
UPPRESSION
COIL
680
k/
0.5W
0.22u/250V
FUSE
20A
FUSE F8A
NOISE
FILTER
L
N
230
-
240V
~
50Hz
BRN/15
BLU/15
G-Y/15
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
MOTOR
TURNTABLE
M
OTOR
GH1:
TOP
GRILL
H
EATING
ELEMENT
GH2:
BOTTOM
HEATING
ELEMENT
H.V.
RECTIFIER
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
T/C
TRANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
U
NIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
250V
10M/
0.5W
NOISE
S
UPPRESSION
COIL
680
k/
0.5W
0.22u/250V
FUSE
20A
FUSE F8A
NOISE
FILTER
L
N
230
-
240V
~
50Hz
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
R879(W)
13 – 2
Figure O-1(c) Oven Schematic-OFF Condition after the oven door is closed.
Figure O-2 Oven Schematic-Microwave cooking Condition
Figure O-3(a) Oven Schematic-Grill-1 cooking Condition (TOP GRILL mode)
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.           2. “  O” APPEARS ON DISPLAY.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.       2. COOKING TIME ENTERED.       3. STRAT KEY TOUCHED.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.        2. COOKING TIME ENTERED.       3. GRILL KEY TOUCHED ONCE.      4. STRAT KEY TOUCHED.
NOTE: "
" indicates components with potentials above 250V
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
M
OTOR
TURNTABLE
M
OTOR
TOP
G
RILL
HEATING
ELEMENT
BOTTOM
HEATING
ELEMENT
H.V.
RECTIFIER
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
T/C
T
RANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
UNIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
250V
10M/
0.5W
NOISE
S
UPPRESSION
C
OIL
6
8
0k
/0
.5
W
0.22u/250V
FUSE
20A
FUSE F8A
NOISE
FILTER
L
N
230
-
2
40V
~
5
0Hz
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
MOTOR
TURNTABLE
M
OTOR
TOP
G
RILL
H
EATING
ELEMENT
BOTTOM
H
EATING
ELEMENT
H.V.
R
ECTIFIER
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
T/C
T
RANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
U
NIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
2
50V
4700p/
2
50V
10M/
0.5W
NOISE
SUPPRESSION
COIL
680
k/
0
.5W
0.22u/250V
FUSE
20A
FUSE F8A
NOISE
FILTER
L
N
230
-
2
40V
~
50Hz
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
M
OTOR
TURNTABLE
M
OTOR
TOP
G
RILL
HEATING
ELEMENT
BOTTOM
HEATING
E
LEMENT
H.V.
RECTIFIER
MAGNETRON
HIGH
VOLTAGE-
TRANSFORMER
T/C
TRANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
UNIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
2
50V
10M/
0
.5W
NOISE
S
UPPRESSION
COIL
680
k/
0.5W
0.22u/250V
FUSE
20A
FUSE F8A
NOISE
FILTER
L
N
2
3
0-2
4
0
V~5
0
H
z
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
R879(W)
13 – 3
Figure O-3(b) Oven Schematic-Grill-2 cooking Condition (BOTTOM GRILL mode)
Figure O-3(c) Oven Schematic-Grill-3 cooking Condition (TOP AND BOTTOM GRILL mode)
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME ENTERED.
3. GRILL KEY TOUCHED TWICE.
4. STRAT KEY TOUCHED.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME ENTERED.
3. GRILL KEY TOUCHED 3 TIMES.     
4. STRAT KEY TOUCHED.
NOTE: "
" indicates components with potentials above 250V
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
M
OTOR
TURNTABLE
MOTOR
TOP
G
RILL
H
EATING
ELEMENT
BOTTOM
H
EATING
ELEMENT
H.V.
R
ECTIFIER
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
T/C
TRANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
UNIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
250V
10M/
0
.5W
NOISE
SUPPRESSION
COIL
680
k/
0.5W
0.22u/250V
FUSE
2
0A
FUSE F8A
NOISE
FILTER
L
N
230
-
2
40V
~
50Hz
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC-
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
MOTOR
TURNTABLE
MOTOR
TOP
GRILL
HEATING
ELEMENT
BOTTOM
HEATING
ELEMENT
H.V.
RECTIFIER
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
T/C
TRANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
UNIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
250V
10M/
0.5W
NOISE
SUPPRESSION
COIL
680
k/
0.5W
0.22u/250V
FUSE
20A
FUSE F8A
NOISE
FILTER
L
N
230
-
240V
~
50Hz
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
R879(W)
13 – 4
NOTE: The top heating element, bottom heating element, fan motor and convection motor will be turned on and off according to the temperature.
See “AUTO PWER CONTROL OPERATION”.
Figure O-4 Oven Schematic-Convection Condition
NOTE: The top heating element, bottom heating element, magnetron, fan motor and convection motor will be turned on and off according to the tem-
perature or microwave power level. See “AUTO PWER CONTROL OPERATION”.
Figure O-5(a) Oven Schematic-COMB-1 cooking Condition (Microwave and Convection mode)
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.         
2. COOKING TIME ENTERED.
3. CONVECTION TEMPERATURE SELECTED.     
4. STRAT KEY TOUCHED.
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME ENTERED.
3. COMBI KEY TOUCHED ONCE.
4. CONVECTION TEMPERATURE SELECTED.     
5. MICROWAVE POWER LEVEL ENTERED.
6. STRAT KEY TOUCHED.
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
M
OTOR
TURNTABLE
M
OTOR
TOP
G
RILL
HEATING
E
LEMENT
BOTTOM
H
EATING
E
LEMENT
H.V.
R
ECTIFIER
MAGNETRON
T:
HIGH
VOLTAGE
TRANSFORMER
T/C
TRANSFORMER
CAPACITOR 1.13
u
F
AC2100V
CONTROL
UNIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
250V
10M/
0.5W
NOISE
S
UPPRESSION
COIL
680
k/
0
.5W
0.22u/250V
FUSE
2
0A
FUSE F8A
NOISE
FILTER
L
N
230V
~
50Hz
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
NOTE: "
" indicates components with potentials above 250V
OL
CM
TTM
OVEN
LAMP
CONVECTION MOTOR
FAN
MOTOR
TURNTABLE
MOTOR
TOP
GRILL
HEATING
ELEMENT
BOTTOM
HEATING
ELEMENT
H.V.
RECTIFIER
MAGNETRON
HIGH
VOLTAGE
TRANSFORMER
T/C
TRANSFORMER
CAPACITOR 1.13
uF
AC2100V
CONTROL
UNIT
A9
A7
RY7
RY5
A3
E1
E3
E5
E7
A1
B2
C3
C1
A5
B1
STOP SWITCH
MONITORED LATCH SWITCH
THERMISTOR
MG.
THERMAL
CUT-OUT
OVEN
THERMAL
CUT-OUT
MONITOR
SWITCH
4700p/
250V
4700p/
250V
10M/
0
.5W
NOISE
S
UPPRESSION
C
OIL
6
8
0k
/0
.5
W
0.22u/250V
FUSE
20A
FUSE F8A
NOISE
FILTER
L
N
230
-
240V
~
50Hz
BRN/15
BLU/15
G-Y/15 -
EARTH
LIVE
NEUTRAL
NC.
NC.
ASYMMETRIC
RECTIFIER
RY6
RY1
RY2
RY3
RY4
FM
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Here you can view online or download Sharp R-879SL (serv.man12) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp R-879SL (serv.man12) Microwave Oven. Information contained in Sharp R-879SL (serv.man12) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).