Read Sharp R-8740 (serv.man17) Service Manual online
R-8740M - 36
SCHEMATIC DIAGRAMS
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. GRILL KEY PRESSED ONCE
4. START KEY PRESSED
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. GRILL KEY PRESSED ONCE
4. START KEY PRESSED
NOTE: *INDICATES COMPONENTS WITH POTENTIALS ABOVE 250V
Figure O-3(a) Oven Schematic-Grill Cooking Condition (TOP GRILL mode)
Figure O-3(b) Oven Schematic-Grill Cooking Condition (BOTTOM HEATER mode)
NOTE: *INDICATES COMPONENTS WITH POTENTIALS ABOVE 250V
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. GRILL KEY PRESSED TWICE.
4. START KEY PRESSED.
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. GRILL KEY PRESSED TWICE.
4. START KEY PRESSED.
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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