SHARP R390AW, R-390AK Service Manual

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Page 1

R-390AW R-390AK

SUPPLEMENTAL SERVICE MANUAL

SX712R390APW/

MICROWAVE OVEN

Miltiple Choice

POPCORN

MINUTE PLUS STOP 

CLEAR

12345

678

INDEX

START

MODELS

R-390AW R-390AK

R-390AW

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.

This is a supplemental Service Manual for Models R-390AW and R-390AK. The R-390AW is quite similar to model R-

390AK, with color changing.

And also this supplemental service manual contains update information for the R-390AK. Use this supplemental manual together with the Base Model Service Manual (Refer No. is S5708R390APK/) for complete operation, service information, etc..

TABLE OF CONTENTS

Page PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICE TO

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

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

FOREWORD.....................................................................................................................INSIDE FRONT COVER

MICROWAVE MEASUREMENT PROCEDURE ...................................................................................................1

SCHEMATIC DIAGRAM ........................................................................................................................................ 2

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..................................................................3

CPU UNIT CIRCUIT ..............................................................................................................................................6

PRINTED WIRING BOARD OF DISPLAY UNIT ...................................................................................................7

PARTS LIST FOR R-390AW .................................................................................................................................8

INFORMATION OF PARTS CHANGING FOR R-390AK ....................................................................................10

SHARP CORPORATION

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

Page 2

R-390AW R-390AK

SERVICE MANUAL

MICROWAVE OVEN

R-390AW, R-390AK

FOREWORD

This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-390AW, R-390AK.

It is recommended that service personnel carefully study the entire text of this 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.

This supplemental service manual contains update information only. Please refer to base model service manual (Refer No. is S5708R390APK/) for complete service information.

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.

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 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.

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R-390Aw R-390AK

MICROWAVE MEASUREMENT PROCEDURE

A. Requirements:

1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm2 at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm2 at any point 5cm or more from the external surface of the oven.

2) Safety interlock switches Primary interlock relay and door sensing switch shall prevent microwave radiation emission in excess of the requirement as above mentioned, secondary interlock switch shall prevent microwave radiation emission in excess of 5 mW/cm2 at any point 5cm or more from the external surface of the oven.

B. Preparation for testing: Before beginning the actual measurement of leakage, proceed as follows:

1) Make sure that the actual instrument is operating normally as specified in its instruction booklet. Important:

Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard for microwave ovens, 21 CFR 1030.10(c)(3)(i), must be used for testing.

2) Place the oven tray in the oven cavity.

3) Place the load of 275±15 ml (9.8 oz) of tap water initially at 20±5˚C (68˚F) in the center of the oven cavity.

The water container shall be a low form of 600 ml (20 oz) beaker with an inside diameter of approx. 8.5 cm (3-1/2 in.) and made of an electrically nonconductive material such as glass or plastic. The placing of this standard load in the oven is important not only to protect the oven, but also to insure that any leakage is measured accurately.

4) Set the cooking control on Full Power Cooking Mode

5) Close the door and select a cook cycle of several minutes. If the water begins to boil before the survey is completed,

replace it with 275 ml of cool water.

C. Leakage test:

Closed-door leakage test (microwave measurement)

1) Grasp the probe of the survey instrument and hold it perpendicular to the gap between the door and the body of the oven.

2) Move the probe slowly, not faster than 1 in./sec. (2.5 cm/sec.) along the gap, watching for the maximum indication on the meter.

3) Check for leakage at the door screen, sheet metal seams and other accessible positions where the continuity of the metal has been breached (eg., around the switches, indicator, and vents). While testing for leakage around the door pull the door away from the front of the oven as far as is permitted by the closed latch assembly.

4) Measure carefully at the point of highest leakage and make sure that the highest leakage is no greater than 4mW/cm2, and that the secondary interlock switch does turn the oven OFF before any door movement.

NOTE: After servicing, record data on service invoice and microwave leakage report.

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R-390Aw R-390AK

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED.

2. HOME PAGE APPEARS ON DISPLAY.

THERMAL  CUT-OUT (OVEN)

CONTROL UNIT

120V AC 60 Hz

OUTER CASE SWITCH

MONITOR  FUSE

OL FM

OUTER CASE SWITCH

Figure O-1. Oven Schematic-Off Condition

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED.

2. COOKING TIME PROGRAMMED.

3. VARIABLE COOKING CONTROL "100%".

4. "START" PAD TOUCHED.

OVEN LAMP

SECONDARY INTERLOCK SWITCH

THERMAL  CUT-OUT (MG.)

(RY-1)

TTM

TURN- TABLE MOTOR

COM.

(RY-2)

FAN  MOTOR

BAA1

PRIMARY INTERLOCK RELAY

DOOR SENSING SWITCH

AH SENSOR

POWER  TRANSFORMER

CAPACITOR

0.94µF

RECTIFIER

MAGNETRON

N.O.

MONITOR  SWITCH

120V AC 60 Hz

OUTER CASE SWITCH

THERMAL  CUT-OUT (OVEN)

CONTROL UNIT

MONITOR  FUSE

OL FM

OVEN LAMP

SECONDARY INTERLOCK SWITCH

THERMAL  CUT-OUT (MG.)

(RY-1)

TTM

TURN- TABLE MOTOR

COM.

(RY-2)

FAN  MOTOR

PRIMARY INTERLOCK RELAY

DOOR SENSING SWITCH

N.O.

MONITOR  SWITCH

Figure O-2. Oven Schematic-Cooking Condition

AH SENSOR

POWER  TRANSFORMER

CAPACITOR

0.94µF

RECTIFIER

MAGNETRON

Page 5

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE.

DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING AFTER REMOVING OUTER CASE.

WARNING FOR WIRING

R-390Aw R-390AK

To prevent an electric shock, take the following manners.

1. Before wiring,

1) Disconnect the power supply.

2) Open the door and wedge the door open.

3) Discharge the high voltage capacitor and wait for 60 seconds.

2. Don’t let the wire leads touch to the following parts;

1) High voltage parts: Magnetron, High voltage transformer, High voltage capacitor and High voltage rectifier assembly.

2) Hot parts: Oven lamp, Magnetron, High voltage transformer and Oven cavity.

COOLING FAN MOTOR REMOVAL

REMOVAL

1. Disconnect oven from power supply and remove outer case.

2. Discharge high voltage capacitor.

3. Disconnect the wire leads from the fan motor.

4. Remove the magnetron from the waveguide flange, referring to "MAGNETRON REMOVAL".

5. Release the snap of the main wire harness from the fan duct.

6. Remove one (1) screw holding the fan duct assembly to oven cavity.

7. Release the main wire harness from the hole of the fan duct.

8. Release the fan duct from the waveguide flange.

9. Release the fan duct assembly from the oven cavity.

10.Remove the fan blade from the fan motor shaft according the following procedure.

1) Hold the edge of the rotor of the fan motor by using a pair of groove joint pliers.

CAUTION: * Make sure that any pieces do not enter the gap

between the rotor and the stator of the fan motor because the rotor is easily shaven by pliers and metal pieces may be produced.

* Do not touch the pliers to the coil of the fan motor

because the coil may be cut or injured.

* Do not disfigure the bracket by touching with the

pliers.

2) Remove the fan blade from the shaft of the fan motor by pulling and rotating the fan blade with your hand.

3) Now, the fan blade will be free.

CAUTION: * Do not reuse the removed fan blade because the

hole (for shaft) may be larger than normal.

3) Sharp edge: Bottom plate, Oven cavity, Waveguide flange, Chassis support and other metallic plate.

4) Movable parts (to prevent a fault) Fan blade, Fan motor, Switch, Switch lever, Open button.

3. Do not catch the wire leads in the outer case cabinet.

4. Insert the positive lock connector certainly until its pin is locked. And make sure that the wire leads should not come off even if the wire leads is pulled.

5. To prevent an error function, connect the wire leads correctly, referring to the Pictorial Diagram.

11.Remove the two (2) screws holding the fan motor to the fan duct.

12.Now, the fan motor is free.

INSTALLATION

1. Install the fan motor to the fan duct with the two (2) screws.

2. Install the fan blade to the fan motor shaft according the following procedure.

1) Hold the center of the bracket which supports the shaft of the fan motor on the flat table.

2) Apply the screw lock tight into the hole (for shaft) of the fan blade.

3) Install the fan blade to the shaft of fan motor by pushing the fan blade with a small, light weight, ball peen hammer or rubber mallet.

CAUTION: * Do not hit the fan blade strongly when installed

because the bracket may be disfigured.

* Make sure that the fan blade rotates smooth after

installation.

* Make sure that the axis of the shaft is not slanted.

3. Catch three holes of fan duct on three tabs of the waveguide flange.

4. Install the fan duct assembly to the oven cavity with the one (1) screw.

5. Insert the snap of the main wire harness to the hole of the fan duct and insert the main wire harness into the hole of the fan duct.

6. Install the magnetron and the chassis support to the oven cavity, referring to "Re-install of MAGNETRON REMOVAL".

7. Connect the wire leads to the fan motor, referring to the pictorial diagram.

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R-390Aw R-390AK

Coil

Groove joint pliers

Stator

Gap Bracket

Rotor

Shaft

Axis

Stator

Rotor

Side ViewRear View

DOOR REPLACEMENT

REMOVAL

1. Disconnect oven from power supply.

2. Push the open button and open the door slightly.

3. Insert an putty knife (thickness of about 0.5mm) into the gap between the choke cover and door frame as shown in Figure C-7 to free engaging parts.

4. Pry the principles of the lever and lift up the choke cover by inserting a putty knife as shown Figure C-7.

5. Release choke cover from door panel.

6. Now choke cover is free.

7. Release two (2) pins of door panel from two (2) holes of upper and lower oven hinges by lifting up.

8. Now, door assembly is free from oven cavity.

Choke Cover

Figure C-7. Door Disassembly

9. Release door panel from seven (7) tabs of door frame by sliding door panel downward.

10.Now, door panel with sealer film is free.

11.Tear sealer film from door panel.

12.Now, door panel is free.

13.Slide latch head upward and remove it from door frame with releasing latch spring from door frame and latch head.

14.Now, latch head and latch spring are free.

15.Remove door screen from door frame by releasing two (2) tabs.

16.Now, door screen is free.

RE-INSTALL

1. Re-install door screen to door frame by fitting two (2) tabs of door frame to two (2) holes of door screen.

Door Frame

Putty Knife

Shaft

These are the position where should be pinched with pliers

Table

Center of bracket

2. Re-install the latch spring to the latch head. Re-install the latch spring to the door frame. Re-install latch head to door frame.

3. Re-install door panel to door frame by fitting seven (7) tabs of door frame to seven (7) holes of door panel.

4. Hold the door panel to the door frame by sliding the door panel upward.

5. Put sealer film on door panel. Refer to "Sealer Film" about how to handle new one.

6. Catch two (2) pins of door panel on two (2) hole of upper and lower oven hinges.

7. Re-install choke cover to door panel by pushing.

Note: After any service to the door; (A) Make sure that door sensing switch and secondary

interlock switch are operating properly. (Refer to chapter "Test Procedures".).

(B) An approved microwave survey meter should be

used to assure compliance with proper microwave radiation emission limitation standards.

After any service, make sure of the following :

1. Door latch heads smoothly catch latch hook through latch holes and that latch head goes through center of latch hole.

2. Deviation of door alignment from horizontal line of cavity face plate is to be less than 1.0mm.

3. Door is positioned with its face pressed toward cavity face plate.

4. Check for microwave leakage around door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

Note: The door on a microwave oven is designed to act as

an electronic seal preventing the leakage of microwave energy from oven cavity during cook cycle. This function does not require that door be airtight, moisture (condensation)-tight or light-tight. Therefore, occasional appearance of moisture, light or sensing of gentle warm air movement around oven door is not abnormal and do not of themselves, indicate a leakage of microwave energy from oven cavity.

Page 7

R-390Aw

LCD vessel tab

IC2

IC1

C11

LCD vessel tab

R-390AK

Door assemby

Figure C-8. Door Replacement

Lower  oven hinge

Upper oven hinge

Lower oven hinge

Choke cover

Installation

1. Put the adhesive tape on the backing film of the sealer film as shown in Fig. C-9.

2. Tear the backing film by pulling the adhesive tape.

3. Put the pasted side of the sealer film on the door panel

DISPLAY UNIT LAMPS REMOVAL

SEALER FILM

Sealer film

Backing film

Adhesive tape

Figure C-9. Sealer film

1. Disconnect oven from power supply and remove outer case.

2. Discharge high voltage capacitor.

3. Remove the control panel assembly from the oven, referring to "CONTROL PANEL ASSEMBLY REMOVAL".

4. Remove the five (5) screws holding the display unit and the power unit to the control panel frame.

5. Remove the display unit and the power unit from the control panel frame.

6. Remove the solder holding the tab (near capacitor C11) of LCD vessel to the printed wiring board.

7. Make the four (4) tabs of LCD vessel straight.

8. Release the LCD vessel from the printed wiring board.

9. Now, the two (2) lamps LMP1 and LMP2 can be found.

10.Remove the solder holding the lamps LMP1 and LMP2 to the printed wiring board.

11.Now, the lamps LMP1 and LMP2 are free.

Figure C-10. Back side view of display unit

Page 8

R-390Aw R-390AK

AC120V 60Hz

A 3

VRS1

(J1)



RY1

D1-D4 11ES1

C 9

C 8

+ –

C1 0.1µ/50v

ZD2

R3 1.3k

ZD1

C2 1000µ/35v

R1 2.4k

2SB1238

R2 82 1w

HZ20-2

2SB1238

R6 82 1w

HZ16-3

C3 0.1µ/50v

SP1

+ –

C 7

C4 10µ/35v

– +

C5

10µ/35v

C 2

C 1

TURNTABLE MOTOR OVEN LAMP FAN MOTOR

MICRO

A 1

N.O.

COM

RY2

R4 1.3k

R5 3.3k

C 3 C 6

C10

C 4

C 5

Figure S-4. Display Unit Circuit

C11

Q3 KRC243M or DTD143ES

C6 10µ/35v

–

SH-B

SH-A



NOTE

: IF NOT SPECIFIED, 1/4w ± 5% : IF NOT SPECIFIED, 1SS270A

Figure S-2. Power Unit Circuit

Page 9

R-390Aw R-390AK

C134

C133

C132

C131

C130

0.1µ/25v x 5

2k R130

2k R131

R136 10kF

Q141

4.7k R142

2SA1036K

LMP1LMP2

R141 2.2k

LD1

LD2

KRA101S



Q140

50v

0.01µ C12

CF1

CSTCS12.00MT

C16 0.1µ/25v

VSS

IC5

M51953A

VCC

NC NC NC 148

C11 47µ/16v

–

C10 0.01µ/50v

HZM5.6NB 2 ZD10

Q1

2SB1238

R10 4.7k

C17 0.1µ/50v

C14 0.1µ/50v

6.2k

R133

R132

R138 22kF

5G39B332J

TH1

LD3

LD4

4.7k x 4

(J17) (J15) (J13) (J11)

R11 470 1/2w

Q12

KRA101S

R135

R134

43kF R137

1C4 (1/2) 

NJM062M

1/4w 750

(J18)

4.7k (J19)

R140



0.1µ/25v C135

LD5

0.01µ/50v C13

R12 4.7k

LD6

(J16) (J14)

(J12) (J10)

0.1µ/25v C18

V6R

VEE2

VMH2

VMH3

VMIL3

VMIL2

C15

0.1µ/25v

C52-C53 0.01µ/50v x 2

D50

1SS181

R62-R64 120 1/2w x 3

R62

R63 R64

HD6610B(LCD Driver)

M/S

V1R

DB0

DB1

DB2

DB3

DB4

DB5

VCC4

VCC3

A 8

A18

A17

A14

A13

VCC

A 7

A 6

A16

A15

A12

OE1 1

A 9

A 8

A 7

A 6

A11

A10

VSS A12 A13 A14 A15 A16 A17 A18 A19 VSS

WAIT P61 P62

STBY BES NMI VSS

EXTAL



XTAL VCC P63

HWR P66 MD0 MD1 MD2

AVCC

VREF AN0

AN1

AN2

AN3

AN4

AN5

AN6

DA1

C53

C52

0.015µ/50v



C51

IC4

0.1µ/25v C50

3.57kD R61

R54

3.32kD

C30 0.01µ/50v

R30 4.7k

DB6

DB7

A 9

A11

A 5

A 4

A 3

A 5

A 4

A 3

IC1

IRQ0

IRQ1

AVSS

R53

47k

R52

10k

IC4 (1/2)

R50 1.8kG

FLM

D 7

D 6

D 5

A10

 IC1 IZA807DR

A 2

A 1

A 0

D 0

D 1

A 2

A 1

A 0

D15

VCC

IZA806DR



PA0

CS1

CS0

VSS

IRQ2

R56 620kJ

R55 47k

R51 360kG

NJM062M

R31

15k

CL1

0.1µ/25v

C122

D 4

D 3

16 17

D 2

GND

D14

D13

D12

PA1

PA2

PA3

R57 300kG

R58 150kF

R59 75kF

(100 x 65 DOTS)

LCD A057DR

V1L

V6L

VEE1

VML1

VCC2

VCC1

OSC2

OSC1

GND3

GND2

GND1

D 9 D 8 D 7 D 6 D 5 P44 VSS P43 P42 P41 P40 P95 P94 P93 P92 P91 P90 VSS

RES0 P87 P86 P85 P84 P83

VCC A20 PA6

TIOCA4

TIOCD3

TIOCA3

1 30

VMH1

C121 0.1µ/25v

C120 0.1µ/25v

R120 4.7k

50v

0.01µ C110

4.7k R110

Q160

KRA101S

A 2

A 1

SCL

TEST

R101 4.7k

R84 15k

Q40

KRA101S

A 0 1

VCC

SELECT 2

R85 15k

C20

R102 4.7k

SELECT 1

(TOP)

0.1µ/25v

Q20

KRA101S

CHECKER

–

C100 0.01µ/50v

SELECT 4

(BOTTOM)

SELECT 3

Q41

KRC101S

C101 10µ/35v

BOOKMARK

SW18 SW19SW16 SW17

SW20 SW21

R79 15k R78 15k

R77 15k R76 15k R75 15k R74 15k R73 15k R72 15k

R160 4.7k

1C3

CAT24C01J or CAT24C02J

GND VSS

R100 4.7k

R81 100k

R82 100k

R83 100k

R80 100k

Q42

KRA101S

TEST2

TEST1

RESET

C123 0.1µ/50v

D11

D10

PA4

PA5

R60 37.4kF

100

R103 150 1/2w

(FORWARD)

BOOKMARK

(BACK)

D20

1SS181

: IF NOT SPECIFIED, 1/16w ± 5%

NOTE

G 1 G 2 G 3 G 4 G 5

 CN-G

G 6 G 7 G 8

C22 0.01µ/50v

Q22

KRA105S

C 8

GND

C 7

C 6

INT

C10

BACK

LIGHT

AH

SENSOR

F 1

F 2

F 3

CN-F

C 2

BUZZER

(EN.)

C 1

BUZZER



C 3

OVEN LAMP

FAN MOTOR

TURNTABLE

MOTOR

C 4

MICRO

C11

DOOR

C 5

C 9

(BROWNER)

N.C

Page 10

R-390Aw R-390AK

SW16

LD1

LMP1

LD2

C123

LD3

2 5 4

R140

11 1

R143

LMP2

TH1

ZD10

Q141

R10

R142 R141

R11

C17

LD6

LD5

LD4

CN-C

SW17

2 5 4

C18

SW19 1 3

SW21

SW20

2 5 4

2 5 43

2 5 4

SW18

245

J14 J15 J17 J16 C52

R53

R51R52

C135

D50

R54 R55 R56 R58 R60

R62

R63

R64

C50 R50

IC4

C51 R61

TP15

C11

Q42

TP21

TP22

Q41

TP20

Front side

J12 J13 J11 J10

R137

R138

81 50

C53

R57

100

R59

C30

R31

Q40

TP23

CN-F

R136

Q20

TP14

R30

C10

C15

C20

Q160

TP36

C121

CF1

TP35

Q1 1

IC5

C120

R65

R160

CN-C

R120

TP16

R64

R73

TP6

R72

TP7 C13 R12

CEB

TP29

R75

Q12

R100 R101

R74

TP24

C16

TP25

R13 C12

R135

LCD

R110 C110 TP34

TP9

J19

Q140

J18

C122

R133 R132 R131 R130

R134

C134 C133 C132 C131 C130

D20

C101

C100

TP18 Q22Q23

161

TP13

R103

TP19

C22

C23

TP8

CN-G

R79

C14

R93 R92 R78 R77 R91 R90 R76 

TP11

TP1

TP31

TP28

TP10

TP17

TP26

IC1

TP27

R102

IC3

TP33

TP32

TP12

TP30 11

IC2

TP5

Back side

Figure S-6. Printed Wiring Board of Display Unit

Page 11

R-390Aw R-390AK

PARTS LIST FOR R-390AW

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

ELECTRIC PARTS

1- 1 QSW-MA110WRE0 1- 2 QFSHDA009WRE0 Fuse holder 1 AH 1- 3 FFS-BA012WRK0 Monitor fuse and monitor switch assembly 1 AH 1- 4 RTHM-A078WRE0 Thermal cut-out 125 deg. 1 AL 1- 5 FACCDA075WRE0 Power supply cord 1 AN 1- 6 FH-DZA075WRK0 High voltage rectifier assembly 1 AS 1- 7 RC-QZA211WRE0 High voltage capacitor 1 AW 1- 8 RV-MZA267WRE0 Magnetron 1 BL 1- 8 RV-MZA197WRE0 Magnetron (Interchangeable) 1 BN 1- 8 RV-MZA271WRE0 Magnetron (Interchangeable) 1 BL 1- 9 RMOTEA338WRE0 Fan motor 1 AV 1- 9 RMOTEA277WRE0 Fan motor (Interchangeable) 1 AX 1-10 QSOCLA021WRE0 Oven lamp socket 1 AH 1-11 RLMPTA030WRE0 Oven lamp 1 AF 1-12 RMOTDA161WRE0 Turntable motor 1 AU 1-13 RTHM-A079WRE0 Thermal cut-out 95 deg. 1 AL 1-14 RTRN-A512WRE0 Power transformer 1 BM 1-14 RTRN-A525WRE0 Power transformer (Interchangeable) 1 BM 1-15 FDTCTA176WRK0 AH. sensor assembly 1 AV

2- 1 GCABUA620WRP0 Outer case cabinet 1 AZ 2- 2 GDAI-A261WRW0 Bottom plate left 1 AP 2- 3 GDAI-A286WRW0 Bottom plate right 1 AN 2- 4 GLEGPA019WRE0 Foot 2 AD 2- 5 GLEGPA067WRF0 Leg 1 AE

3- 1 CPWBFA742WRK0 Power unit 1 BE 3- 1A QCNCMA394DRE0 2-pin connector (CN-A) 1 AD 3- 1B QCNCMA432DRE0 11-pin connector (CN-C) 1 AF 3- 1C FW-VZA195DRE0 Switch harness A (SN-A) 1 AD 3- 1D FW-VZA197DRE0 Switch harness B (SN-B) 1 AD C1 RC-KZA087DRE0 Capacitor 0.1uF 50V 1 AB C2 VCEAB31VW108M Capacitor 1000uF 35V 1 AF C3 RC-KZA087DRE0 Capacitor 0.1uF 50V 1 AB C4-6 VCEAB31VW106M Capacitor 10uF 35V 3 AA D1-4 VHD11ES1///-1 Diode (11ES1) 4 AB D7-8 VHD1SS270A/-1 Diode (1SS270ATA) 2 AA Q1-2 VS2SB1238//-3 Transistor (2SB1238) 2 AA Q3 VSKRC243M//-3 Transistor (KRC243M) 1 AB R1 VRD-B12EF242J Resistor 2.4k ohm 1/4W 1 AA R2 VRS-B13AA820J Resistor 82 ohm 1W 1 AA R3-4 VRD-B12EF132J Resistor 1.3k ohm 1/4W 2 AA R5 VRD-B12EF332J Resistor 3.3k ohm 1/4W 1 AA R6 VRS-B13AA820J Resistor 82 ohm 1W 1 AA RY1 RRLY-A080DRE0 Relay (OJ-SH-124LM) 1 AG RY2 RRLY-A076DRE0 Relay (OMIF-S-124LM) 1 AK SP1 RALM-A014DRE0 Buzzer (PKM22EPT-THAI) 1 AG T1 RTRNPA113DRE0 Transformer 1 AT VRS1 RH-VZA032DRE0 Varistor (10G471K) 1 AE ZD1 VHEHZ163///-1 Zener diode (HZ16-3) 1 AC ZD2 VHEHZ202///-1 Zener diode (HZ20-2) 1 AB 3- 2 DPWBFB691WRK0 Display unit 1 BW 3- 2- 1 RH-HZA012DRE0 Thermistor TH1 1 AL 3- 2- 2 RH-TZA120DRE0 Transistor (KRA101S). Q12,Q20,Q40,Q42,Q140,Q160 6 AE 3- 2- 3 RH-TZA119DRE0 Transistor (KRC101S). Q41 1 AE 3- 2- 4 RH-TZA127DRE0 Transistor (KRA105S). Q22 1 AE 3- 2- 5 RH-DZA074DRE0 Diode (1SS181). D20,D50 2 AE 3- 2- 6 RH-DZA076DRE0 Zener diode (HZM5.6NB2). ZD10 1 AE 3- 2- 7 RLMPHA046DRE0 Lamp (LMP1,LMP2) 2 AM 3- 2- 8 RH-TZA130DRE0 Transistor (2SA1036K). Q141 1 AH 3- 2- 9 QSW-PA027DRE0 Tact switch (SW16-SW21) 6 AG 3- 3 DPWBFB688WRU0 Switch unit 1 AP 3- 3- 1 FW-VZA219DRE0 Lead wire harness (CN-G) 1 AK 3- 3- 2 QSW-PA016DRE0 Tact switch (SW1-SW15) 15 AB 3- 4 GMADIA108WRR0 Display window 1 AF 3- 5 HPNLCB416WRR0 Control panel frame 1 AV 3- 6 JBTN-B029WRF0 Open button 1 AG

2nd interlock switch, door sensing switch and outer case switches

4AK

CABINET PARTS

CONTROL PANEL PARTS

Page 12

R-390Aw R-390AK

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

3- 7 JBTN-B081WRF0 Book mark button 1 AF 3- 8 JBTN-B080WRF0 Page button 1 AF 3- 9 JBTN-B079WRF0 Select button 1 AF 3- 10 JBTN-B078WRF0 Start button 1 AF 3- 11 MSPRCA050WRE0 Open button spring 1 AB 3- 12 MSPRCA104WRE0 Select button spring 1 AD 3- 13 XEPSD30P08XS0 Screw: 3mm x 8mm 9 AA

OVEN PARTS

4- 1 MLEVFA082WRE0 Actuator 1 AD 4- 2 PHOK-A104WRF0 Switch holder 1 AF 4- 3 PHOK-A095WRF0 Latch hook 1 AN 4- 4 LBNDKA099WRW0 Capacitor holder 1 AD 4- 5 NFANJA029WRE0 Fan blade 1 AL 4- 6 PDUC-A652WRP0 Fan duct 1 AU 4- 7 ************* Oven cavity (Not a replaceable part) 1BC 4- 8 LANGFA175WRP0 Chassis support 1 AX 4- 9 LANGQA452WRP0 Partition angle 1 AK 4-10 LANGQA454WRP0 MG thermo angle 1 AH 4-11 MLEVPA194WRF0 Switch lever 1 AG 4-12 NCPL-A045WRF0 Coupling 1 AH 4-13 PCUSGA385WRP0 Cushion 1 AK 4-14 PCOVPA275WRE0 Waveguide cover 1 AR 4-15 PCUSGA339WRP0 Cushion 1 AG 4-16 PCUSUA212WRP0 Cushion 1 AB 4-18 PCUSUA376WRP0 Cushion 1 AG 4-19 PCUSUA192WRP0 Cushion 1 AD 4-20 PCUSUA329WRP0 Cushion 1 AC 4-21 PCUSGA399WRE0 Cushion 1 AG 4-22 PPACGA084WRF0 TTM packing 1 AF 4-23 LANGTA338WRP0 Sensor mounting angle 1 AN

DOOR PARTS

5- 1 FDORFA318WRT0 Door panel 1 BE 5- 2 PSHEPA382WRE0 Sealer film 1 AH 5- 3 GWAKPA531WRR0 Door frame 1 AT 5- 4 HPNL-A663WRR0 Door screen 1 AL 5- 5 GCOVHA385WRF0 Choke cover 1 AG 5- 6 LSTPPA139WRF0 Latch head 1 AF 5- 7 MSPRTA084WRE0 Latch spring 1 AB 5- 8 PCUSUA481WRP0 Cushion 1 AB 5- 9 PCUSUA452WRP0 Cushion 1 AB 5-10 XCPSD40P08000 Screw : 4mm x 8mm 1 AA 5-11 XCPSD40P08WN2 Screw : 4mm x 8mm 1 AC

MISCELLANEOUS

6- 1 FROLPA079WRK0 Turntable support 1 AQ 6- 2 NTNT-A079WRE0 Turntable tray 1 AR 6- 3 FW-VZB572WRE0 Main wire harness 1 BC 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 TCADCA655WRR0 Instruction book 1 AY 6- 9 TLABMA550WRR0 Copyright label 1 AD

SCREWS,NUTS AND WASHERS

7- 1 XFPSD40P08K00 Screw : 4mm x 8mm 7 AA 7- 2 XFPSD30P06000 Screw : 3mm x 6mm 3 AA 7- 3 XHTSD40P08RV0 Screw : 4mm x 8mm 3 AA 7- 4 XHTSD40P12RV0 Screw : 4mm x 12mm 1 AA 7- 5 XOTSD40P12RV0 Screw : 4mm x 12mm 8 AA 7- 6 XOTSD40P12000 Screw : 4mm x 12mm 14 AA 7- 7 XOTSE40P08000 Screw : 4mm x 8mm 1 AA 7- 8 XOTSD40P14000 Screw : 4mm x 14mm 1 AA

Page 13

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 authrized SHARP parts Distributor for your area. Defective parts required return should be returned as indicated in the Service Policy.

INFORMATION OF PARTS CHANGE FOR MODEL R-390AK

The following parts have been changed for the Base model R-390AK.

Interchangeability

A. OLD NEW B. OLD NEW C. OLD NEW D. OLD NEW

R-390Aw R-390AK

REPLACEMENT PART NO.

REF.NO. DESCRIPTION

1- 5 Power supply cord FACCDA048WRE0 1 FACCDA075WRE0 1 A Sep./'97 AN 3- 2- 1 Thermistor TH1 Not listed RH-HZA012DRE0 1 C Nov./'97 AL 3- 2- 2 Transistor (KRA101S) Not listed RH-TZA120DRE0 6 C Nov./'97 AE

Q12,Q20,Q40,Q42,Q140,Q160

3- 2- 3 Transistor (KRC101S) Not listed RH-TZA119DRE0 1 C Nov./'97 AE

Q41

3- 2- 4 Transistor (KRA105S) Not listed RH-TZA127DRE0 1 C Nov./'97 AE

Q22

3- 2- 5 Diode (1SS181) Not listed RH-DZA074DRE0 2 C Nov./'97 AE

D20,D50

3- 2- 6 Zener diode (HZM5.6NB2) Not listed RH-DZA076DRE0 1 C Nov./'97 AE

ZD10

3- 2- 7 Lamp LMP1,LMP2 Not listed RLMPHA046DRE0 2 C Nov./'97 AM 3- 2- 8 Transistor (2SA1036K) Not listed RH-TZA130DRE0 1 C Nov./'97 AH

Q141

3- 2- 9 Tact switch Not listed QSW-PA027DRE0 6 C Nov./'97 AG

SW16-SW21

3- 3 Switch unit DPWBFB688WRK0 1 DPWBFB688WRU0 1 Misprint AP 4- 2 Switch holder PHOK-A098WRF0 1 PHOK-A104WRF0 1 A Jul./'97 AF 4- 17 Door stopper LSTPPA162WRF0 1 Deleted 0 D Sep./'97 5 Door assembly CDORFA772WRK0 1 Deleted 0 D Sep./'97 5- 1 Door panel FDORFA303WRT0 1 FDORFA318WRT0 1 D Sep./'97 BE 5- 5 Choke cover GCOVHA370WRF0 1 GCOVHA385WRF0 1 D Sep./'97 AG 6- 8 Instruction book TCADCA639WRR0 1 TCADCA655WRR0 1 C Nov./'97 AY 7- 5 Screw: 4mm X 12mm XOTSD40P12RV0 9 XOTSD40P12RV0 8 A Jun./'97 AA 7- 8 Screw: 4mm X 14mm Not listed XOTSD40P14000 1 C Jun./'97 AA

OLD No.

Q'ty NEW No.

Interchangeability

Q'ty

EFFECTIVE FROM CODE

INFORMATION OF PARTS CHANGE FOR BOTH MODELS R-390AK AND R-390AW

The following parts will be changed for the both models R-390AK and R-390AW.

Q3 Transistor VSKRC243M//-3 1 VSDTD143ES/-3 1 A Dec./'97 AC 3- 2- 6 Zener diode ZD10 RH-DZA076DRE0 1 RH-DZA077DRE0 1 A Nov./'97 7- 2 Screw: 3mm X 6mm XFPSD30P06000 3 XHPSD30P06000 3 A Dec./'97 AA

Page 14

R-390Aw R-390AK

OVEN AND CABINET PARTS

4-19

1-15

7-2

4-23

4-18

1-11

4-9

1-10

1-4

6-7

7-5

2-1

7-5

7-3

4-10

1-13

7-2

7-1

6-9

1-8

6-6

4-16

7-5

7-8

7-7

4-7

4-20

4-12

4-14

7-6

2-4

2-2

1-12

4-22

7-1

4-11

7-5

4-15

4-3

4-13

1-1

1-14

1-2

1-1

1-3

4-21

7-6

1-1

7-6

1-9

7-5

7-3

1-5

7-1

4-1

4-4

4-2

7-4

4-6

4-5

1-7

1-6

7-1

7-6

4-8

6-2

7-3

7-6

2-5

7-6

2-4

2-3

6-1

7-6

Page 15

R-390Aw R-390AK

CONTROL PANEL, DOOR AND MISCELLANEOUS PARTS

3 - 5

3 - 4

3 - 8

3 - 7

3-12

3 - 6

3-11

3-10

3-3-1

3-3-2

3 - 9

3 - 2

3-2-7

3 - 1

3 - 3

3-13

3-2-9

3-13

5-3

5-4

5-8

5-1

5-7

5-9

5-11

5-2

5-5

5-10

5-6

Actual wire harness may be different from illustration.

6-3

(HIGH VOLTAGE TRANSFORMER)

6-4

6-5

(CAPACITOR)

Page 16

R-390Aw R-390AK

PACKING AND ACCESSORIES

INTO THE

OVEN CAVITY

DOOR PROTECTION SHEET SPADPA204WRE0

6- 8 INSTRUCTION BOOK & PRINTING MATTER

6- 2 TURNTABLE TRAY

6- 1 TURNTABLE SUPPORT

TRAY PACK SPADFA397WRE0

CABINET COVER (R-390AK only) SPAKHA003WRE0

PLASTIC BAG SSAKHA034WRE0

TOP PAD ASSEMBLY FPADBA341WRK0

BOTTOM PAD ASSEMBLY FPADBA342WRK0

Not replaceable items.

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

PACKING CASE R-390AW: SPAKCC995WRE0  R-390AK: SPAKCC927WRE0

'97 SHARP CORP. (5K2.770E) Printed in U.S.A