SHARP R305CW2 Service Manual

R-305CW

SUPPLEMENTAL SERVICE MANUAL

S2903R305CPW/

MICROWAVE OVEN

NO.
LBS.

CUPS.

OZ.

COOK

DEFOST

M

I

N

U

T

E

TO ADJUST QUANTITY

TOUCH PAD AGAIN

Casserole

Beverage

Popcorn

Baked

Fresh

Rolls/

Potatoes

Vegetables

Muffins

D

U

1

Ground Meat

P

M

O

C

2

Steaks/Chops

3

Chicken Pieces

123
456
78

Power

Timer

Level

0

Clock

Stop

START

Clear

U

L

P

E

F

R

O

9

S

S

T

MODEL

R-305CW

In the interest of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.

WARNING TO SERVICE PERSONNEL: Microwave ovens con­tain circuitry capable of producing very high voltage and
current, contact with following parts may result in a severe,
possibly fatal, electrical shock. (High Voltage Capacitor, High
Voltage Power Transformer, Magnetron, High Voltage Rectifier
Assembly, High Voltage Harness etc..)

This is a supplemental Service Manual for Model R-305CW. This model is quite similar to base
model R-308CW. Use this supplemental manual together with the Base Model Service Manual
(Refer No. is S1901R310CPW/) for complete operation, service information, etc..

TABLE OF CONTENTS

Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO

AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ...................INSIDE FRONT COVER

BEFORE SERVICING ......................................................................................................INSIDE FRONT COVER

WARNING TO SERVICE PERSONNEL................................................................................................................1

FOREWORD AND WARNING...............................................................................................................................2

PRODUCT SPECIFICATIONS ..............................................................................................................................3

SCHEMATIC DIAGRAM ........................................................................................................................................4

TEST PROCEDURE ..............................................................................................................................................5

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..................................................................7

POWER UNIT CIRCUIT ........................................................................................................................................7

CPU UNIT CIRCUIT ..............................................................................................................................................8

PRINTED WIRING BOARD ...................................................................................................................................9

PARTS LIST ........................................................................................................................................................10

PACKING AND ACCESSORIES .........................................................................................................................11

SHARP CORPORATION

This document has been published to be used for after
sales service only.
The contents are subject to change without notice.

R-305CW

PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE
ENERGY

(a) Do not operate or allow the oven to be operated with the door open.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other

microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3)
seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and
latches, (5) evidence of dropping or abuse.

(c) Before turning on microwave power for any service test or inspection within the microwave generating

compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
integrity, and connections.

(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave

generation and transmission systems shall be repaired, replaced, or adjusted by procedures described
in this manual before the oven is released to the owner.

(e) A microwave leakage check to verify compliance with the Federal Performance Standard should be

performed on each oven prior to release to the owner.

BEFORE SERVICING

Before servicing an operative unit, perform a microwave emission check as per the Microwave
Measurement Procedure outlined in this service manual.
If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS
CORPORATION immediately @1-800-237-4277.

If the unit operates with the door open, service person should 1) tell the user not to operate the oven
and 2) contact SHARP ELECTRONICS CORPORATION and The Food and Drug Administration's
Center for Devices and Radiological Health immediately.

Service personnel should inform SHARP ELECTRONICS CORPORATION of any certified unit found
with emissions in excess of 4mW/cm2. The owner of the unit should be instructed not to use the unit
until the oven has been brought into compliance.

WARNING TO SERVICE PERSONNEL

Microwave ovens contain circuitry capable of pro­ducing very high voltage and current, contact with
following parts
fatal, electrical shock.

(Example)
High Voltage Capacitor, High Voltage Power Trans-

former, Magnetron, High Voltage Rectifier Assem­bly, High Voltage Harness etc..

Read the Service Manual carefully and follow all
instructions.

may result in a severe, possibly

R-305CW

Don't Touch !
Danger High Voltage

Before Servicing

1. Disconnect the power supply cord , and then
remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

WARNING:RISK OF ELECTRIC SHOCK.

DISCHARGE THE HIGH-VOLTAGE
CAPACITOR BEFORE SERVICING.

The high-voltage capacitor remains charged about 60
seconds after the oven has been switched off. Wait for 60
seconds and then short-circuit the connection of the high­voltage capacitor (that is the connecting lead of the high­voltage rectifier) against the chassis with the use of an
insulated screwdriver.

Whenever troubleshooting is performed the power supply
must be disconnected. It may in, some cases, be necessary
to connect the power supply after the outer case has been
removed, in this event,

1. Disconnect the power supply cord, and then remove
outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the leads to the primary of the power
transformer.

5. Ensure that the leads remain isolated from other
components and oven chassis by using insulation tape.

6. After that procedure, reconnect the power supply cord.

When the testing is completed,

1. Disconnect the power supply cord, and then remove
outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Reconnect the leads to the primary of the power
transformer.

5. Reinstall the outer case (cabinet).

6. Reconnect the power supply cord after the outer case is
installed.

7. Run the oven and check all functions.

After repairing

1. Reconnect all leads removed from components during
testing.

2. Reinstall the outer case (cabinet).

3. Reconnect the power supply cord after the outer case is
installed.

4. Run the oven and check all functions.

Microwave ovens should not be run empty. To test for the
presence of microwave energy within a cavity, place a cup
of cold water on the oven turntable, close the door and set
the power to HIGH and set the microwave timer for two (2)
minutes. When the two minutes has elapsed (timer at zero)
carefully check that the water is now hot. If the water
remains cold carry out Before Servicing procedure and re­examine the connections to the component being tested.

When all service work is completed and the oven is fully
assembled, the microwave power output should be checked
and a microwave leakage test should be carried out.

1

R-305CW

SERVICE MANUAL

MICROWAVE OVEN

R-305CW

FOREWORD

This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service
Information for the SHARP MICROWAVE OVEN, R-305CW.

The model R-305CW is quite similar to base model R-308CW (Refer No. is S1901R310CPW/).
It is recommended that service personnel carefully study the entire text of this manual and the base model's manual so

that they will be qualified to render satisfactory customer service.
Check the interlock switches and the door seal carefully. Special attention should be given to avoid electrical shock and

microwave radiation hazard.

WARNING

Never operate the oven until the following points are ensured.
(A) The door is tightly closed.
(B) The door brackets and hinges are not defective.
(C) The door packing is not damaged.
(D) The door is not deformed or warped.
(E) There is no other visible damage with the oven.

Servicing and repair work must be carried out only by trained service personnel.

DANGER

Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing.
Service personnel - Do not contact the following parts while the appliance is energized;
High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage
Harness;
If provided, Vent Hood, Fan assembly, Cooling Fan Motor.

All the parts marked “*” on parts list are used at voltages more than 250V.
Removal of the outer wrap gives access to voltage above 250V.
All the parts marked “∆” on parts list may cause undue microwave exposure, by themselves, or when they are

damaged, loosened or removed.

SHARP ELECTRONICS CORPORATION

SHARP PLAZA, MAHWAH,

NEW JERSEY 07430-2135

2

SPECIFICATION

ITEM DESCRIPTION

Power Requirements 120 Volts / 12.5 Amperes

60 Hertz
Single phase, 3 wire grounded

Power Output 1000 watts (IEC-705 TEST PROCEDURE)

Operating frequency of 2450MHz

Case Dimensions Width 20-1/2"

Height 11-7/8"
Depth 16-7/8"

Cooking Cavity Dimensions Width 14-3/4"

Height 8-3/4"

1.1 Cubic Feet Depth 15-3/4"
Control Complement Touch Control System

Clock ( 1:00 - 12:59 )
Timer (0 - 99 min. 99 seconds)

Microwave Power for Variable Cooking
Repetition Rate;

P-HI.................................................. Full power throughout the cooking time

P-90 ....................................................................approx. 90% of Full Power

P-80 ....................................................................approx. 80% of Full Power

P-70 ....................................................................approx. 70% of Full Power

P-60 ....................................................................approx. 60% of Full Power

P-50 ....................................................................approx. 50% of Full Power

P-40 ....................................................................approx. 40% of Full Power

P-30 ....................................................................approx. 30% of Full Power

P-20 ....................................................................approx. 20% of Full Power

P-10 ....................................................................approx. 10% of Full Power

P-0 ....................................................No power throughout the cooking time

MINUTE PLUS pads
INSTANT START pads (Casserole, Beverage, Popcorn, etc.)

COMPU DEFROST pads
Number selection pads
Power Level pad, Timer/Clock pad
Stop/Clear pad, START pad

Oven Cavity Light Yes
Safety Standard UL Listed FCC Authorized

DHHS Rules, CFR, Title 21, Chapter 1, Subchapter J

R-305CW

3

R-305CW

TOUCH CONTROL PANEL

NO.

LBS.

CUPS.

COOK

DEFOST

OZ.

M

I

N

S

U

U

L

P

T

E

TO ADJUST QUANTITY

TOUCH PAD AGAIN

Casserole

Beverage

Baked

Potatoes

Vegetables

1 Ground Meat

Fresh

C

O

U

P

M

Popcorn

Rolls/

Muffins

E

D

F

R

O

S

T

2 Steaks/Chops
3 Chicken Pieces

123
456
78

Power

Level

Stop

Clear

0

9

Timer
Clock

START

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED

2. CLOCK APPEARS ON DISPLAY

MONITOR 
FUSE 20A

GRN

120V AC
60 Hz

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

THERMAL 
CUT-OUT (OVEN)

A2

A1

CONTROL UNIT

OL FM

OVEN
LAMP

SECONDARY
INTERLOCK
SWITCH

THERMAL 
CUT-OUT (MG.)

(RY-1)

TTM

Figure O-1. Oven Schematic-Off Condition

TURN-
TABLE
MOTOR

COM.

FAN 
MOTOR

(RY-2)

COM.N.O.

SH-B SH-A

PRIMARY
INTERLOCK
RELAY

DOOR
SENSING
SWITCH

N.O.

MONITOR 
SWITCH

POWER 
TRANSFORMER

CAPACITOR 0.94µF

AC 2200V

RECTIFIER

MAGNETRON

4

TEST PROCEDURES

R-305CW

PROCEDURE

LETTER

A MAGNETRON ASSEMBLY TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check
across the magnetron filament leads should indicate less than 1 ohm.

5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads
and chassis ground. This test should indicate an infinite resistance. If there is little or no resistance
the magnetron is grounded and must be replaced.

6. Reconnect all leads removed from components during testing.

7. Reinstall the outer case (cabinet).

8. Reconnect the power supply cord after the outer case is installed.

9. Run the oven and check all functions.

MICROWAVE OUTPUT POWER

The following test procedure should be carried out with the microwave oven in a fully assembled
condition (outer case fitted).

HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD
BE OBSERVED.

Power output of the magnetron can be measured by performing a water temperature rise test. This test
should only be used if above tests do not indicate a faulty magnetron and there is no defect in the following
components or wiring: silicon rectifier, high voltage capacitor and power transformer. This test will require
a 16 ounce (453cc) measuring cup and an accurate mercury thermometer or thermocouple type
temperature tester. For accurate results, the following procedure must be followed carefully:

COMPONENT TEST

1. Fill the measuring cup with 16 oz. (453cc) of tap water and measure the temperature of the water with
a thermometer or thermocouple temperature tester. Stir the thermometer or thermocouple through
the water until the temperature stabilizes. Record the temperature of the water.

2. Place the cup of water in the oven. Operate oven at POWER 10(HIGH) selecting more than 60
seconds cook time. Allow the water to heat for 60 seconds, measuring with a stop watch, second hand
of a watch or the digital read-out countdown.

3. Remove the cup from the oven and again measure the temperature, making sure to stir the
thermometer or thermocouple through the water until the maximum temperature is recorded.

4. Subtract the cold water temperature from the hot water temperature. The normal result should be 30.7
to 57.1˚F(17.1 to 31.7˚C) rise in temperature. If the water temperatures are accurately measured and
tested for the required time period the test results will indicate if the magnetron tube has low power
output (low rise in water temperature) which would extend cooking time or high power output (high
rise in water temperature) which would reduce cooking time. Because cooking time can be adjusted
to compensate for power output, the magnetron tube assembly should be replaced only if the water
temperature rise test indicates a power output well beyond the normal limits. The test is only accurate
if the power supply line voltage is 120 volts and the oven cavity is clean.

B POWER TRANSFORMER TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the primary input terminals and measure the resistance of the transformer with an
ohmmeter. Check for continuity of the coils with an ohmmeter. On the R x 1 scale, the resistance of
the primary coil should be less than 1 ohm and the resistance of the high voltage coil should be
approximately 91.1 ohms; the resistance of the filament coil should be less than 1 ohm.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

5

R-305CW

5

4

3

21

09876

START

BEVERAGE

POPCORN

Casserole

Power

Level

COMPU

DEFROST

MINUTE

PLUS

Rolls/

muffins

Baked

potatoes

Stop

Clear

Timer
Clock

Fresh

vegetables



G 8

G 9

G10

G11

G12

G13

G14

G 7 G 6 G 5 G 4 G 3 G 2 G 1



TEST PROCEDURES

PROCEDURE

LETTER

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.
(HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO

MEASURE THE FILAMENT AND HIGH VOLTAGE.)

J KEY UNIT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon cable

5. Reconnect all leads removed from components during testing.

6. Re-install the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

COMPONENT TEST

is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the
contacts are closed when the door is closed and open when the door is open. If the door sensing
switch (stop switch) is good, disconnect the flat ribbon cable that connects the key unit to the control
unit and make sure the door sensing switch is closed (either close the door or short the door sensing
switch connecter). Use the Key unit matrix indicated on the control panel schematic and place a
jumper wire between the pins that correspond to the STOP/CLEAR pad making momentary contact.
If the control unit responds by clearing with a beep the key unit is faulty and must be replaced. If the
control unit does not respond, it is faulty and must be replaced. If a specific pad does not respond,
the above method may be used (after clearing the control unit) to determine if the control unit or key
pad is at fault.

L COMPU DEFROST TEST

WARNING : The oven should be fully assembled before following procedure.

(1)Place one cup of water in the center of the turntable tray in the oven cavity.
(2)Close the door, touch the " COMPU DEFROST " pad twice.
(3)Touch the Number pad " 5 " and then touch the " START " pad.
(4)The oven is in Compu Defrost cooking condition.
(5)The oven will operate as follows

(6)If improper operation is indicated, the control unit is probably defective and should be checked.

WEIGHT 1ST STAGE 2ND STAGE

0.5lb 60% 45sec. 40% 20sec.

LEVEL TIME LEVEL TIME

6

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

MAGNETRON REMOVAL

R-305CW

Removal

1. Disconnect the power supply cord and then remove
outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect wire leads from magnetron.

5. Remove the four (4) screws holding chassis support to
magnetron, oven cavity front flange, oven cavity back
plate and fan duct.

6. Remove the chassis support from oven.

7. Carefully remove the four (4) screws holding magnetron
to waveguide flange.

8. Lift up magnetron with care so that magnetron antenna
is not hit by any metal object around antenna.

9. Now, the magnetron is free.

a

2

VRS1

10G471K

d

b

T1

3

D1
S1NB10


1

A

CN-A

B

AC

C

A 1

A 2

Re-install

1. Re-install the magnetron to waveguide flange with the
four (4) screws.

2. Insert the two (2) tabs of the chassis support to the oven
cavity front plate and the back plate.

3. Hold the chassis support to the oven cavity back plate,
oven cavity front flange, magnetron, and the fan duct
with the four (4) screws.

4. Re-install the chassis support to magnetron with the one
(1) screw.

5. Reconnect the wire leads to the magnetron. Refer to
"PICTORIAL DIAGRAM".

6. Re-install outer case and check that the oven is operating
properly.

CAUTION: WHEN REPLACING MAGNETRON, BE SURE

THE R.F. GASKET IS IN PLACE AND MOUNT­ING SCREWS ARE TIGHTENED SECURELY

45

+
–

C1 2200µ/25v

CN-C
9PIN LEAD WIRE
HARNESS

C 3

GND

VR

C 5

6

A

B

C

D

OVEN LAMP
TURNTABLE
MOTOR
FAN MOTOR

E



AC

MICRO

F

DOOR

G

SWITCH

H

1

NO

COM

NO

COM

SH-A

SH-B

(J1)

c

RY1

RY2

2

Figure S-2. Power Unit Circuit

3

45

7

SP1 PKM22EPT

C 9

INT

C 4

BUZZER
OVEN LAMP

TURNTABLE

C 6

MOTOR
FAN MOTOR

C 8

MICRO

(BROWNER)

C 7

NC

C 2

DOOR

C 1

D

E

F

G

H

6

R-305CW

1

A

OZ.

NO.

LBS.

CUPS

AUTO

B

DEFROST

LIQUID CRYSTAL DISPLAY

COOK

C

R7 4.7k

D

R5 1k

E

CPU UNIT

0.01µ/25v
C4

+

125

COM1
COM2
COM3

SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11

SEG10
SEG 9
SEG 8
SEG 7
SEG 6
SEG 5
SEG 4
SEG 3
SEG 2
SEG 1



R8 4.7k

Q2

2SA1037AK

C3 0.01µ/25v

C2 47µ/16v

–

2

64

SEG8

6580

SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0

VCC

VREF
AVSS
COM3
COM2
COM1
COM0

VL3

VL2

1

R9 4.7k

R6 15k

(J17) 4.7k

(J15) 4.7k

(J13) 4.7k

(J11) 4.7k

(J10)

(J16)

(J14)

(J12) 12kF

UDZ4.3B
ZD1

C11 0.01µ/25v

R10 15k

SEG9

VL1

3

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

IC1

P57

P56

P55

P63

AN7

AN6

AN5

AN4

AN2

AN1

AN0

P06

P07

P10

P11

P12

P13

SEG21

IZA945DR

P53

P52

P51

P50

P47

P46

CNTR0

45

15k
R60

Rolls/

muffins

15k
R61

15k
R62

PLUS

Fresh

MINUTE

15k
R63

15k

41

P14

P15

P16

P17

P20
P21
P22
P23
P24
P25
P26
P27

VSS

XOUT
XIN
P70
P71

RESET
P40
P41

P45

25 40

P44

P43

INT0

24

R64

15k
R65

15k
R66

15k
R67

G 7 G 6 G 5 G 4 G 3 G 2 G 1

G 8

vegetables

5 4 3 2 1

0 9 8 7 6

R90 15k

G 9

G10

1M

R80

C60
C61
C62
C63

CF1 CST4.00MGW

C60-65 330pF/50v

C64
C65

R74 270k
R75 270k
R76 270k
R77 270k
R78 270k

R79 270k

/25v

0.01µ
C40

R68 15k

COMPU

DEFROST

Clock

Timer

START

POPCORN

Casserole

Level

Power

G11

R69 15k

R70 15k

Baked

potatoes

Stop

Clear

BEVERAGE

G12

R71 15k

G13

R72 15k

6

KEY UNIT

G14

R73 15k

A

B

C

D

E

Figure S-3. CPU Unit Circuit

F



R1 82

G

C-3

H

GND

1

R3 4.7k

R2 4.7k

Q1

2SA1037AK

R4 560 1/2w

LD1 LD2 LD3 LD4

C1 0.1µ/50v

C-5

VR

2

Q10

DTA143EKA

/50v

0.1µ
C10

R30 3.3k

C-9

INT

Q30

C20 0.1µ/50v

DTA143EKA

Q20

+

Q21

DTD143EKA

C-4

C-2

C-6

OVEN LAMP

TURNTABLE

MOTOR

BUZZER

NC

FAN MOTOR

3

8

DTA143EKA
/35v

10µ

–


C21

D20

MA152WA

C-7

C-8

(BROWNER)

MICRO

R41 15k

4.7k

R40

Q22

DTA123JKA

: IF NOT SPECIFIED 1/10W ± 5%

D40

MA152WA

C-1

DOOR

45

NOTE

F

G

H

6

R-305CW

1

A

B

C

D

E

DIP

2

SW (GREEN)

2

1

CN - B

OL

TTM FM

OM

DU

RY1

(XA)

AC

1

12

2

VH

SH - A

CN - A

3

(D2)

C1

SP1

AC

(J1)

VRS1

T1

45

CN - C

D1

9

SH - B

1

(D3)
(D4)

1

P

74

S

F

3

6

A

B

C

D

E

F

G

H

1

DU

OM

OM

DU

RY3 RY2 MICROBROWNER

Figure S-4. Printed Wiring Board of Power Unit

2

3

45

9

F

G

H

6

R-305CW

PARTS LIST

Note: The parts marked “∆” may cause undue microwave exposure.

The parts marked “*” are used in voltage more than 250V.

REF. NO. PART NO. DESCRIPTION Q'TY CODE

ELECTRIC PARTS

1- 1 QSW-MA137WRE0 2nd interlock switch / door sensing switch 2 AH
1- 2 QFSHDA009WRE0 Fuse holder 1 AH
1- 3 FFS-BA023WRK0 Monitor fuse and monitor switch assembly 1 AS
1- 4 RTHM-A078WRE0 Thermal cut-out 125 deg. 1 AL
1- 5 FACCDA081WRE0 Power supply cord 1 AP
1- 5 FACCDA082WRE0 Power supply cord (Interchangeable) 1 AV
1- 6 FH-DZA088WRK0 High voltage rectifier assembly 1 AP

*

1- 7 RC-QZA173WRE0 High voltage capacitor 1 AX

*

1- 7 RC-QZA211WRE0 High voltage capacitor (Interchangeable) 1 AV

*

1- 8 RV-MZA288WRE0 Magnetron 1 BK

∆

*

1- 9 RMOTEA383WRE0 Fan motor 1 AV
1-10 QSOCLA021WRE0 Oven lamp socket 1 AH
1-11 RLMPTA068WRE0 Oven lamp 1 AG
1-11 RLMPTA030WRE0 Oven lamp (Interchangeable) 1 AE
1-12 RMOTDA161WRE0 Turntable motor 1 AU
1-12 RMOTDA211WRE0 Turntable motor (Interchangeable) 1 AS
1-13 RTHM-A080WRE0 Thermal cut-out 145 deg. 1 AP
1-14 RTRN-A580WRE0 Power transformer 1 BP

*

CABINET PARTS

2- 1 GCABUA690WRP0 Outer case cabinet 1 AZ
2- 2 GDAI-A316WRW0 Bottom plate 1 AX
2- 3 GLEGPA074WRE0 Foot 2 AC
2- 4 GLEGPA077WRF0 Leg 1 AH

CONTROL PANEL PARTS

3- 1 CPWBFA821WRK0 Power unit 1 BA
3- 1A QCNCMA446DRE0 2-pin connector (CN-A) 1 AC
3- 1B FW-VZA250DRE0 9pin wire harness (CN-C) 1 AW
3- 1C FW-VZA195DRE0 Switch harness A (SH-A) 1 AD
3- 1D FW-VZA197DRE0 Switch harness B (SH-B) 1 AD
C1 RC-EZA333DRE0 Capacitor 2200 uF 25V 1 AE
D1 RSRCDA013DRE0 Diode bridge (S1NB10) 1 AG
RY1-2 RRLY-A114DRE0 Relay (DU12D1-1P(M)-R) 2 AN
SP1 RALM-A014DRE0 Buzzer (PKM22EPT) 1 AG
T1 RTRNPA110DRE0 Transformer 1 AP
VRS1 RH-VZA032DRE0 Varistor (10G471K) 1 AE
3- 2 DPWBFB914WRK0 CPU unit 1 BA
3- 3 FPNLCB429WRK0 Control panel frame with key unit 1 BD
3- 3-1 FUNTKA929WRE0 Key unit 1 AY
3- 4 JBTN-B099WRF0 Open button 1 AF
3- 5 MSPRCA050WRE0 Open button spring 1 AB
3- 6 PSHEPA588WRE0 LED sheet 1 AE
3- 7 LHLD-A202WRF0 LCD holder 1 AK
3- 8 XEPSD30P08XS0 Screw; 3mm x 8mm 4 AA

OVEN PARTS

4- 1 PDUC-A724WRF0 Air separater 1 AU
4- 2 PPACGA084WRF0 TTM packing 1 AF
4- 3 PHOK-A114WRF0 Latch hook 1 AQ

∆

4- 4 LBNDKA099WRW0 Capacitor holder 1 AD
4- 5 NFANJA029WRE0 Fan blade 1 AL
4- 6 PDUC-A725WRP0 Fan duct 1 BA
4- 7 ************* Oven cavity (Not a replaceable part) 1--

∆

4- 8 LANGFA192WRP0 Chassis support 1 AX
4- 9 PCUSGA321WRP0 Cushion 1 AH
4-10 PCUSUA270WRP0 Cushion 1 AG
4-11 MLEVPA233WRF0 Switch lever 1 AG
4-12 NCPL-A045WRF0 Coupling 1 AH
4-13 PCUSUA511WRP0 Cushion 1 AC
4-14 PCOVPA349WRE0 Waveguide cover 1 AE
4-15 PCUSGA339WRP0 Cushion 1 AG
4-16 PCUSGA399WRE0 Cushion 1 AF
4-17 PCUSUA512WRP0 Cushion 1 AB
4-18 PCUSUA126WRE0 Cushion 1 AC

10

REF. NO. PART NO. DESCRIPTION Q'TY CODE

DOOR PARTS

5- 1 FDORFA332WRT0 Door panel 1 BD

∆

5- 2 PSHEPA382WRE0 Sealer film 1 AH
5- 3 GWAKPA610WRR0 Door frame 1 AX

∆

5- 4 HPNL-A716WRR0 Door screen 1 AQ
5- 5 LSTPPA188WRF0 Latch head 1 AG

∆

5- 6 MSPRTA187WRE0 Latch spring 1 AC
5- 7 XCPSD40P08000 Screw : 4mm x 8mm 4 AA
5- 8 PCUSUA504WRP0 Cushion 5 AB
5- 9 GCOVHA405WRF0 Choke cover 1 AS

MISCELLANEOUS

6- 1 FROLPA079WRK0 Turntable support 1 AQ
6- 2 NTNT-A079WRE0 Turntable tray 1 AR
6- 2 NTNT-A084WRE0 Turntable tray (Interchangeable) 1 AQ
6- 3 FW-VZB723WRE0 Main wire harness 1 AU
6- 4 QW-QZA150WRE0 High voltage wire B 1 AF

*

6- 5 PZET-A012WRE0 Terminal insulator 1 AB
6- 6 TCAUAA166WRR0 DHHS caution label 1 AC
6- 7 TCAUAA200WRR0 Monitor caution label 1 AB
6- 8 TINSEA791WRR0 Instruction book 1 AD
6- 9 TCAUAA240WRR0 Screw caution 1 AC

SCREWS,NUTS AND WASHERS

7- 1 XHPSD40P08K00 Screw : 4mm x 8mm 9 AA
7- 2 XHPSD30P06000 Screw : 3mm x 6mm 1 AA
7- 3 XHTSD40P08RV0 Screw : 4mm x 8mm 2 AA
7- 4 XHTSD40P12RV0 Screw : 4mm x 12mm 1 AA
7- 5 XOTSD40P12RV0 Screw : 4mm x 12mm 5 AA
7- 6 XOTSD40P12000 Screw : 4mm x 12mm 15 AA
7- 7 XOTSE40P08000 Screw : 4mm x 8mm 1 AA
7- 8 LX-CZA070WRE0 Special screw (Torx tamper proof screw) 2 AC

R-305CW

HOW TO ORDER REPLACEMENT PARTS

To have your order filled promptly and correctly, please furnish the following information.

1. MODEL NUMBER 2. REF. NO. 3. PART NO. 4. DESCRIPTION

Order Parts from the authorized SHARP parts Distributor for your area.
Defective parts requiring return should be returned as indicated in the Service Policy.

PACKING AND ACCESSORIES

DOOR PROTECTION SHEET
SPADPA204WRE0

6- 8 INSTRUCTION BOOK
& PRINTING MATTER

6- 2 TURNTABLE TRAY

6- 1 TURNTABLE SUPPORT

INTO THE
OVEN CAVITY

TRAY PACK
SPADFA451WRE0

TOP PAD ASSEMBLY
FPADBA395WRK0



PLASTIC BAG
SSAKHA034WRE0

BOTTOM PAD ASSEMBLY
FPADBA396WRK0

Not replaceable items.

11

PACKING CASE
SPAKCD229WRE0

R-305CW

1

OVEN AND CABINET PARTS

A

B

4-17

1-4

C

4-7

2

4-10

6-7

1-10

1-11

3

4-13

1-8

45

2-1

7-5

7-8

7-1

6-6

7-6

7-3

6-9

6

A

7-5

B

7-8

7-7

C

D

4-12

E

4-14

6-2

6-1

F

G

4-1

4-2

1-12

7-1

2-2

1-14

4-11

4-15

7-5

4-3

4-9

1-1

1-1

4-16

1-2

7-6

1-6

7-5

2-4

7-1

1-3

4-4

1-5

7-1

1-7

4-5

7-6

7-4

1-9

4-6

1-13

7-6

4-18

7-2

D

7-6

E

4-8

7-3

F

G

2-3

H

1

7-6

2-3

2

7-6

7-6

3

12

7-6

45

H

6

R-305CW

1

CONTROL PANEL PARTS

A

3-3

B

3-3-1

C

3-4

2

3-2

3-7

3-6

3

3-8

5-7

45

3-8

3-1

DOOR PARTS

5-9

6

A

B

C

D

E

5-3

F

5-4

G

3-5

5-8

5-8

5-1

5-8

5-2

5-8

5-7

D

5-7

E

5-7

F

5-5

5-6

G

H

Actual wire harness may be different from illustration.

1

6-3

MISCELLANEOUS

2

6-4

3

13

(CAPACITOR)

6-5

45

H

6

R-305CW

COPYRIGHT © 1999 BY SHARP CORPORATION

ALL RIGHTS RESERVED.

No part of this publication may be repro­duced, stored in retrieval systems, or trans­mitted in any form or by any means, elec­tronic, mechanical, photocopying, record­ing, or otherwise, without prior written per­mission of the publisher.

14

'99 SHARP CORP. (1S2.530E) Printed in U.S.A