Sharp R297F Service Manual

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED.

2. CLOCK APPEARS ON DISPLAY.

NOISE FILTER

L

FUSE

T6.3A

BRN

50Hz

˜

LIVENEUTRAL

220V

EARTH

G-Y

LINE CROSS CAPACITOR

NOISE SUPPRESSION COIL

BLU

N

NOTE: " " indicates components with potential above 250V.

COM.

A1

RY-1

CONTROL
UNIT

B1

OL

FM

TTM

B2A3

OVEN LAMP

FAN MOTOR

MONITOR SWITCH

TURNTABLE MOTOR

0.068µ/AC250V

LINE BYPASS

CAPACITOR

0.0022µ/AC250V

LINE BYPASS

CAPACITOR

0.0022µ/AC250V

N.O.

RY-2
2ND.
INTERLOCK
RELAY

120˚C (OVEN)

TEMPERATURE

FUSE

2ND. INTERLOCK
RELAY CONTROL
SWITCH

1ST. LATCH
SWITCH

POWER TRANSFORMER

H.V. FUSE

0.6A

CAPACITOR

0.94µF

AC2000V

R-297F

MAGNETRON

H.V. RECTIFIER

Figure O-1 Oven Schematic-OFF Condition

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED.

2. COOKING TIME PROGRAMMED.

3. START KEY TOUCHED.

NOISE FILTER

L

FUSE

T6.3A

BRN

50Hz

˜

LIVENEUTRAL

220V

EARTH

G-Y

BLU

N

0.068µ/AC250V

LINE CROSS CAPACITOR

NOISE SUPPRESSION COIL

LINE BYPASS

CAPACITOR

0.0022µ/AC250V

LINE BYPASS

CAPACITOR

0.0022µ/AC250V

N.O.

RY-2
2ND.
INTERLOCK
RELAY

120˚C (OVEN)

TEMPERATURE

FUSE

B1

2ND. INTERLOCK
RELAY CONTROL
SWITCH

1ST. LATCH
SWITCH

COM.

RY-1

CONTROL
UNIT

A1

POWER TRANSFORMER

OL

FM

TTM

H.V. FUSE

0.6A

B2A3

OVEN LAMP

FAN MOTOR

MONITOR SWITCH

TURNTABLE MOTOR

CAPACITOR

0.94µF

AC2000V

MAGNETRON

H.V. RECTIFIER

Figure O-2 Oven Schematic-ON Condition

25

R-297F

A

B

C

1

OVEN CAVITY

BACK PLATE

23456

POWER SUPPLY CORD

LIVE

B

R

N

L

B

U

NEUTRAL

G/Y

EARTH

L

N

NOISE

FILTER

RED

RED

WHT

WHT

HIGH

VOLTAGE

CAPACITOR

H.V.

RECTIFIER

HIGH VOLTAGE

FUSE

MAGNETRON

POWER

HIGH VOLTAGE COMPONENTS

GRY

ORG

A

B

TRANSFORMER

C

(Cabinet side)

WHT

WHT

RED

D

OVEN LAMP

GRY

E

TEMPERATURE

FUSE (OVEN)

WHT

WHT

(Front side)

GRN

GRY

N.O.

F

GRN

GRN

COM.

2ND. INTERLOCK

RELAY CONTROL

SWITCH

GRN

CN-B

2

GRY

1

G

GRY

RED

ORG

D

FM:

FAN MOTOR

GRY

GRY

ORG

ORG

E

TTM:

TURNTABLE

MOTOR

GRY

GRY

WHT

GRY

GRY

N.C.

COM.

MONITOR

SWITCH

N.O.

COM.

1ST. LATCH

SWITCH

RED

GRY

ORG

CN-A

3

1

2

T1

Figure S-1. Pictorial Diagram

F

G

INTERLOCK

RELAY

N.O.

COM.

RED

ORG

RED

RY1

CN-A

3

1

H

1

2

CONTROL UNIT

CN-B

2ND.

RY2

H

123456

26