Read Sharp R-8740 (serv.man13) Service Manual online
R-8740M - 37
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. GRILL KEY PRESSED THREE TIMES.
4. START KEY PRESSED.
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. GRILL KEY PRESSED THREE TIMES.
4. START KEY PRESSED.
Figure O-4 Oven Schematic - Convection Cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. CONVECTION TEMPERATURE SELECTED
4. START KEY PRESSED.
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. CONVECTION TEMPERATURE SELECTED
4. START KEY PRESSED.
NOTE: *INDICATES COMPONENTS WITH POTENTIALS ABOVE 250V
NOTE: *INDICATES COMPONENTS WITH POTENTIALS ABOVE 250V
Figure O3(c). Oven Schematic - Grill Cooking Condition (TOP AND BOTTOM mode)
SCHEMATIC DIAGRAMS
R-8740M
C1
C3
STOR
THERMI-
B2
B1
SWITCH
STOP
UNIT
CONTROL
F1:FUSE
*CAPACITOR
F2:FUSE
EARTH
*MAGNETRON
*POWER
TRANSFORMER
BLU
BRN
*ASYMMETRIC
RECTIFIER
*H.V. RECTIFIER
NEUTRAL
LIVE
NOISE SUPPRESSION COIL
NOISE
FILTER
/15
/15
G-Y/15
0.22 F/250V
N
L
10M/0.5W
4700u/250V
4700u/250V
680K/0.5W
GRILL HEATER (TOP)
OVEN
THERMAL
CUT-OUT
OVEN LAMP
OL
F8A
TM
T
MOTOR
TURNTABLE
CUT-OUT
THERMAL
MG
230V-240V 50Hz
N.C
SWITCH
MONITOR
20A
MONIT'D
LATCH
SWITCH
MOTOR
CONVECTION
CM
BOTTOM HEATER
FAN MOTOR
FM
RY4
A1
A3
A5
A9
A11
RY7
RY5
RY1
RY3
RY2
N.O
COM
N.O
COM
N.O
COM
1.07uF 2100V
R-8740M
C1
C3
STOR
THERMI-
B2
B1
SWITCH
STOP
UNIT
CONTROL
F1:FUSE
*CAPACITOR
F2:FUSE
EARTH
*MAGNETRON
*POWER
TRANSFORMER
BLU
BRN
*ASYMMETRIC
RECTIFIER
*H.V. RECTIFIER
NEUTRAL
LIVE
NOISE SUPPRESSION COIL
NOISE
FILTER
/15
/15
G-Y/15
0.22 F/250V
N
L
10M/0.5W
4700u/250V
4700u/250V
680K/0.5W
GRILL HEATER (TOP)
OVEN
THERMAL
CUT-OUT
OVEN LAMP
OL
F8A
TM
T
MOTOR
TURNTABLE
CUT-OUT
THERMAL
MG
230V-240V 50Hz
N.C
SWITCH
MONITOR
20A
MONIT'D
LATCH
SWITCH
MOTOR
CONVECTION
CM
BOTTOM HEATER
FAN MOTOR
FM
RY4
A1
A3
A5
A9
A11
RY7
RY5
RY1
RY3
RY2
N.O
COM
N.O
COM
N.O
COM
1.07uF 2100V
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