manualshive.com logo in svg

Sharp R-203CW, Service Manual

The Sharp R-203CW Service Manual is a comprehensive guide for owners of this exceptional product. With step-by-step instructions and detailed diagrams, this manual offers invaluable assistance in understanding and troubleshooting your device. Download it for free from manualshive.com to ensure you make the most of your Sharp R-203CW experience.

Share
Download
background image

30

R-203CW

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-MA131WRE0

Secondary interlock switch & door sensing switch

 2

AG

1- 2

FFS-BA020WRK0

C/T fuse & monitor switch assembly

 1

AP

1- 3

FACCDA079WRE0

Power supply cord

 1

AF

1- 4

QSOCLA021WRE0

Oven lamp socket

 1

AH

1- 5

FH-DZA081WRK0

High voltage rectifier

 1

AQ

1- 6

RC-QZA200WRE0

High voltage capacitor

 1

AV

1- 6

RC-QZA201WRE0

High voltage capacitor (Interchangeable)

 1

AW

1- 7

RMOTEA338WRE0

Fan motor

1

AV

1- 7

RMOTEA355WRE0

Fan motor (Interchangeable)

 1

AU

1- 8

RV-MZA226WRE0

Magnetron

1

BE

1- 8

RV-MZA282WRE0

Magnetron (Interchangeable)

1

BP

1- 9

RLMPTA030WRE0

Oven lamp

 1

AF

1-10

RMOTDA211WRE0

Turntable motor

 1

AS

1-10

RMOTDA186WRE0

Turntable motor (Interchangeable)

 1

AW

1-11

RTHM-A078WRE0

Thermal cut-out 125˚C

 1

AK

1-12

RTRN-A561WRE0

Power transformer

 1

BM

CABINET PARTS

2- 1

GCABUA696WRP0

Outer case cabinet

 1

AF

2- 2

FDAI-A203WRY0

Bottom plate

 1

BB

2- 3

GLEGPA074WRE0

Foot

 2

AC

CONTROL PANEL PARTS

3- 1

CPWBFA773WRK0

Control unit

1

BL

3- 1A

QCNCMA431DRE0

2-pin connector (A)

1

AC

3- 1B

QCNCMA275DRE0

2-pin connector (B)

1

AB

C1

RC-KZA087DRE0

Capacitor     0.1 uF    50V

1

AA

C2

VCEAB31EW477M

Capacitor     470 uF    25V

1

AC

C3

VCKYD11CY103N

Capacitor    0.01 uF    16V

1

AA

C4

VCEAB31CW476M

Capacitor      47 uF    16V

1

AA

C5

RC-KZA087DRE0

Capacitor     0.1 uF    50V

1

AA

C6

VCKYD11CY103N

Capacitor    0.01 uF    16V

1

AA

C20

VCEAB31HW104M

Capacitor     0.1 uF    50V

1

AM

C21

VCEAB31VW106M

Capacitor      10 uF    35V

1

AA

C40

VCKYD11CY103N

Capacitor    0.01 uF    16V

1

AA

C61-64

VCKYD11HB331K

Capacitor     330 pF    50V

4

AA

C70

VCKYD11CY103N

Capacitor    0.01 uF    16V

1

AA

C71

VCCCF61HH330J

Capacitor      33 pF    50V

1

AB

D1-4

VHD11ES1///-1

Diode (11ES1)

4

AB

D5

VHD1SS270A/-1

Diode (1SS270A)

1

AA

D20-22

VHD1SS270A/-1

Diode (1SS270A)

3

AA

D40

VHD1SS270A/-1

Diode (1SS270A)

1

AA

IC1

RH-IZA868DRE0

LSI

1

AN

Q1

VS2SA933S//-3

Transistor (2SA933)

1

AB

Q20

VSKRA101M//-3

Transistor (KRA101M)

1

AB

Q21

VSKRC243M//-3

Transistor (KRC243M)

1

AB

Q22

VSDTA143ES/1B

Transistor (DTA143ES)

1

AA

Q30

VSKRA101M//-3

Transistor (KRA101M)

1

AB

R1

VRD-B12HF911J

Resistor       910 ohm   1/2W

1

AA

R2

VRD-B12EF102J

Resistor      1.0k ohm   1/4W

1

AA

R3-5

VRD-B12EF153J

Resistor       15k ohm   1/4W

3

AA

R20

VRD-B12EF153J

Resistor       15k ohm   1/4W

1

AA

R30

VRD-B12EF332J

Resistor      3.3k ohm   1/4W

1

AA

R40

VRD-B12EF153J

Resistor       15k ohm   1/4W

1

AA

R41

VRD-B12EF472J

Resistor      4.7k ohm   1/4W

1

AA

R50-55

VRD-B12EF153J

Resistor       15k ohm   1/4W

6

AA

R57-60

VRD-B12EF153J

Resistor       15k ohm   1/4W

4

AA

R61-64

VRD-B12EF224J

Resistor      220k ohm   1/4W

4

AA

R70

VRN-B12EK103F

Resistor       10k ohm   1/4W

1

AA

R80

VRD-B12EF153J

Resistor       15k ohm   1/4W

1

AA

(J6)

VRD-B12EF332J

Resistor      3.3k ohm   1/4W

1

AA

(J7)

VRD-B12EF472J

Resistor      4.7k ohm   1/4W

1

AA

RY1

RRLY-A111DRE0

Relay (JV12S-KT)

1

AL

RY2

RRLY-A094DRE0

Relay (OMIF-S-112LM)

1

AN

SP30

RALM-A014DRE0

Buzzer (PKM22EPT-CA)

1

AG

T1

RTRNPA110DRE0

Transformer

1

AP

VRS1

RH-VZA032DRE0

Varistor (10G471K)

1

AE

ZD1

VHEHZ4C3///-1

Zener diode (HZ4C-3)

1

AA

3- 2

FPNLCB426WRK0

Control panel frame with key unit and LCD

1

BE

*
*
*

*

∆

*

∆

*

Summary of Contents for R-203CW

Page 1: ...INSIDE FRONT COVER WARNING TO SERVICE PERSONNEL 1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 4 OPERATION 6 TROUBLESHOOTING GUIDE 8 TEST PROCEDURE 10 TOUCH CONTROL PANEL 17 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 21 PICTORIAL DIAGRAM 27 CONTROL PANEL CIRCUIT 28 PRINTED WIRING BOARD 29 PARTS LIST 30 PACKING AND ACCESSORIES 34 S2902R20...

Page 2: ... 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 Microwa...

Page 3: ...acitor 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 Reconnec...

Page 4: ...e 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 Mo...

Page 5: ...amaged 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 Certaininitialpartsareintentionallynotgroundedandpresent a risk of electrical shock only during servicing Service personnel Do not contact the following parts while the appliance is energized HighVoltageCapacitor PowerTr...

Page 6: ...uency 2450 MHz Case Dimensions Width 18 1 8 Height 11 3 8 Depth 14 5 8 Cooking Cavity Dimensions Width 12 3 8 0 7 Cubic feet Height 7 7 8 Depth 12 5 8 Control Complement Touch Control System Clock 1 00 12 59 Timer 0 99 minutes 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 ap...

Page 7: ...3 wire 15 amp or higher rated cord Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally 3 Pronged Plug Grounded Receptacle Box Grounding Pin 3 Pronged Receptacle OVEN DIAGRAM 1 Oven door with see through window 2 Safety door latches 3 Door hinges 4 Door seals and sealing surfaces 5 Turntable motor shaft 6 Removable turntable support 7 Removable...

Page 8: ...th the following results The circuits to the oven lamp turntable motor the cooling fan motor and the high voltage components are de energized and the digital read out displays the time still remaining in the cook cycle when the door was opened 7 Themonitorswitchiselectricallymonitoringtheoperation of the secondary interlock switch and primary interlock relay RY2 and is mechanically associated with...

Page 9: ...T OUT A1 DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM The door is opened by pulling the door refer to the Figure D 1 Latch Heads Latch Hook Door Door Sensing Switch Monitor Switch Secondary Interlock Switch Figure D 1 Door Open Mechanism DOOR SENSING AND SECONDARY INTERLOCK SWITCHES The secondary interlock switch is mounted in the lower position of the latch hook and the door sensing...

Page 10: ...e etc Undernormaloperation thethermalcut outremainsclosed However when abnormally high temperatures are reached within the magnetron the thermal cut out will open at 257 F 125 C causing the oven to shut down C T FUSE 1 The C T fuse blows when the contacts COM NO of the primary interlock relay RY2 and secondary interlock switch remain closed with the oven door open and when the monitor switch close...

Page 11: ...PATTERN ON PWB Home fuse blows when power cord is plugged into wall receptacle C T fuse blows when power cord is plugged into wall receptacle All letters and indicators do not ap pear in display when power cord is first plugged into wall outlet Display does not operate properly when STOP CLEAR key is touched Buzzer should sound and time of day should appear in display C T fuse blows when the door ...

Page 12: ...Power output of the magnetron can be measured by performing a water temperature rise test This test shouldonlybeusedifabovetestsdonotindicateafaultymagnetronandthereisnodefectinthefollowing componentsorwiring siliconrectifier highvoltagecapacitorandpowertransformer Thistestwillrequire a 16 ounce 453cc measuring cup and an accurate mercury thermometer or thermocouple type temperature tester For acc...

Page 13: ...ns An open thermal cut out indicates overheating of the magnetron Check for restricted air flow to the magnetron especially the cooling fan air guide 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions CAUTION IFTHETHERMALCUT OUTINDICATESANOPENCIRCU...

Page 14: ... removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions PRIMARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCH 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 Isolatetheswitchandconnecttheohmmet...

Page 15: ...ERATURE REPLACE THE C T FUSE 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions The touch control panel consists of circuits including semiconductors such as LSI ICs etc Therefore unlike conventional microwave ovens proper maintenance cannot be per...

Page 16: ... Discharge high voltage capacitor 4 Reconnect all leads removed from components during testing 5 Re install the outer case cabinet 6 Reconnect the power supply cord after the outer case is installed 7 Run the oven and check all functions TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST J KEY UNIT TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 ...

Page 17: ...and the common terminal of the relay RY2 on the control unit with an A C voltmeter The meter should indicate 120 volts if not check oven circuit RY1 and RY2 Relay Test These relays are operated by D C voltage Check voltage at the relay coil with a D C voltmeter during the microwave cooking operation DC voltage indicated Defective relay DC voltage not indicated Check diode which is connected to the...

Page 18: ...oubleshooting guide given below if indicator does not light up after above check and repairs are finished 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 these leads remain isolated from other components and oven chassis by using insulation...

Page 19: ...en power is supplied 2 Indicator Circuit This circuit consists of 4 digits 12 segments and 3 common electrodes using a Liquid Crystal Display TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 3 Power Source Circuit This circuit generates voltage necessary in the control unitfromtheAClinevoltage Inaddition thesynchronizing signal is available in order to compose a basic standard time in t...

Page 20: ... a corresponding signal will be input into R60 16 R63 IN Signal similar to R60 When either G7 line on key matrix is touched a corresponding signal will be input into R60 17 AIN0 IN To input signal which communicates the door open close information to LSI Door close H level signal 0V Door open L level 5V 18 20 AIN1 AIN3 IN Terminal to change functions according to the Model By using the A D convert...

Page 21: ...minal while one of G2 line keys on key matrix is touched 32 R92 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to R60 R63 terminal while one of G1 line keys on key matrix is touched 33 XIN IN Internal clock oscillation frequency setting input The internal clock frequency is set by inserting the capacitor resistor oscillation circuit with respect to XOUT terminal ...

Page 22: ...ntrol unit being sure that the lead wires are not twisted 3 After aluminium foil is removed be careful that abnormal voltage due to static electricity etc is not applied to the input or output terminals 4 Attach connectors electrolytic capacitors etc to PWB making sure that all connections are tight 5 Be sure to use specified components where high precision is required 1 Precautions for Handling E...

Page 23: ...and High voltage rectifier assembly 2 Hot parts Oven lamp Magnetron High voltage transformer and Oven cavity WARNING FOR WIRING 1 Disconnect the power supply cord 2 Visuallycheckthedoorandcavityfaceplatefordamage dents cracks signs of arcing etc Carry out any remedial work that is necessary before operating the oven Do not operate the oven if any of the following conditions exist 1 Door does not c...

Page 24: ...ER WHEN REPLACING IT RE PLACE HIGH VOLTAGE RECTIFIER ASSEM BLY HIGH VOLTAGE COMPONENTS REMOVAL HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY POWER TRANSFORMER REMOVAL 1 Disconnect the power supply cord and remove outer case 2 Open the oven door and block it open 3 Discharge high voltage capacitor 4 Disconnect the wire leads main wire harness and H V wire from power transformer 5 Disco...

Page 25: ...ng the turntable motor cover to the bottom plate with the cutting pliers as shown in Figure C 3 CAUTION DO NOT DROP THE TURNTABLE MOTOR COVER INTO THE OVEN AFTER CUTTING THE BRIDGES BECAUSE IT WILL DAMAGE THE WIRE LEADS OF THE MOTOR AND IT IS DIFFICULT TO REMOVE IT OUT OF THE OVEN 5 Remove the turntable motor cover from the bottom plate 6 Disconnect the wire leads from the turntable motor 7 Remove...

Page 26: ...lock tight into the hole for shaft of the fan blade 5 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 hard when installing because the bracket may become disfigured Make sure that the fan blade rotates smoothly after installation Make sure that the axis of the shaft is not slanted ...

Page 27: ... sensing switch and secondary interlock switch open within 1 6mm gap between right side of cavity face plate and door when door is open 5 Re install outer case and check for microwave leakage around the door with an approved microwave survey meter Refer to Microwave Measurement Procedure 8 2 Thenpullouttheswitchwhilepushingtheplungerofthe switch again 8 3 Now the secondary interlock switch is free...

Page 28: ... 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 p...

Page 29: ...rounding conductor of the power supply cord has been grounded by power supply cord fixing screw The screw must allways be kept tight NOTE The neutral WHT wire must be connected to the terminal with N mark on the power supply cord RED WHT DOOR SENSING SWITCH GRY RED POWER TRANSFORMER HIGH VOLTAGE WIRE B BLK Blue Mark NOTE Hot RED wire must be connected to the terminal with blue mark on the oven lig...

Page 30: ...k R60 15k R64 220k R63 220k R62 220k R61 220k C64 C63 C62 C61 C61 C64 330pF 50v x 4 G10 G 9 G 8 G 7 G 6 G 5 G 4 G 3 G 2 G 1 R55 15k R54 15k R53 15k R52 15k R51 15k R50 15k R80 15k 0 9 7 8 5 6 1 2 4 3 START Minute Plus COMPU DEFROST Power Level Stop Clear Timer Clock POPCORN BEVERAGE BAKED POTATO DINNER PLATE FRESH VEGETABLES ROLL MUFFIN IC1 IZA868DR 1 42 40 22 25 30 35 10 5 15 21 SEG 0 SEG 1 SEG 2...

Page 31: ...1 3 2 2 4 S P B Q1 Q22 D22 Q30 R59 R60 R58 R57 R40 R4 C40 D3 D20 D40 CN B AC N FM TTM OL RY1 DOOR SW C4 C6 C71 D5 C3 ZD1 R1 R30 SP30 C5 R70 C70 CF1 R41 R51 R50 R52 R54 R53 R55 DIP 22 B B Q20 Q21 VRS1 C21 D1 D4 D2 C2 C1 T1 C20 R20 R5 RY2 D21 10 E E 6 42 1 IC1 4 21 9 3 1 R61 R62 R63 R64 C61 C63 C64 C62 2 F 11 J7 J5 J3 J6 J4 J2 J1 8 R ...

Page 32: ...103N Capacitor 0 01 uF 16V 1 AA C20 VCEAB31HW104M Capacitor 0 1 uF 50V 1 AM C21 VCEAB31VW106M Capacitor 10 uF 35V 1 AA C40 VCKYD11CY103N Capacitor 0 01 uF 16V 1 AA C61 64 VCKYD11HB331K Capacitor 330 pF 50V 4 AA C70 VCKYD11CY103N Capacitor 0 01 uF 16V 1 AA C71 VCCCF61HH330J Capacitor 33 pF 50V 1 AB D1 4 VHD11ES1 1 Diode 11ES1 4 AB D5 VHD1SS270A 1 Diode 1SS270A 1 AA D20 22 VHD1SS270A 1 Diode 1SS270A...

Page 33: ...8000 Screw 4mm x 8mm 4 AA MISCELLANEOUS 6 1 FROLPA089WRK0 Turntable support 1 AP 6 2 NTNT A094WRE0 Turntable 1 AN 6 3 TINSEA794WRR0 Instruction book 1 AD 6 4 FW VZB657WRE0 Switch harness 1 AH 6 5 FW VZB658WRE0 Main wire harness 1 AV 6 6 QW QZA150WRE0 High voltage wire B 1 AF 6 7 TCAUAA166WRR0 DHHS caution label 1 AC 6 8 TCAUAA156WRR0 User caution label 1 AF 6 9 TCAUAA239WRR0 Monitor caution 1 AC 6...

Page 34: ...TS 7 11 2 1 7 11 7 10 7 10 7 9 7 5 4 6 4 4 4 9 7 1 7 8 7 7 4 10 7 1 1 12 7 4 7 8 7 4 4 1 2 2 2 3 7 8 7 8 4 13 2 3 7 2 4 16 7 3 1 10 6 11 1 11 7 5 7 12 1 3 1 7 7 6 1 1 1 1 1 2 1 6 1 5 7 9 7 1 1 8 6 10 6 10 4 7 4 11 6 2 6 1 4 15 4 8 6 7 4 5 4 12 6 9 7 8 1 9 1 4 4 3 4 2 4 14 1 2 4 17 7 5 A A ...

Page 35: ...S CONTROL PANEL PARTS DOOR PARTS 5 3 6 5 6 4 5 5 5 2 5 4 5 8 5 8 5 6 5 7 5 1 Actual wire harness may be different than illustration 6 6 3 2 6 8 3 2 2 3 2 1 3 3 3 1 3 4 3 4 3 4 Befor attaching Control unit to Control panel foil side of Control unit must be cleaned by ethyl alcohol ...

Page 36: ...ronic mechanical photocopying recording orotherwise withoutprior written permission of the publisher PACKING AND ACCESSORIES 6 2 TURNTABLE TRAY 6 3 INSTRUCTION BOOK 6 1 TURNRABLE SUPPORT INTO THE OVEN CAVITY Not replaceable items TRAY PAD ASSY CPADBA244WRK0 PACKING CASE MICROWAVE OVEN TOP PAD ASSEMBLY FPADBA387WRK0 POLYETHYLENG BAG SSAKHA014WRE0 DOOR PROTECTION SHEET SPADPA580WRE0 SPAKCD209WRE0 BO...

Reviews:

No comments

Related manuals for R-203CW

Haier HCW3460AES User Manual preview
HCW3460AES
Brand: Haier Pages: 124
V-ZUG Miwell-Combi XSL Operating Instructions Manual preview
Miwell-Combi XSL
Brand: V-ZUG Pages: 64
Taurus HORIZON 9 Instruction preview
HORIZON 9
Brand: Taurus Pages: 36
Panasonic Inverter NN-A775 Cookery Book preview
Inverter NN-A775
Brand: Panasonic Pages: 83
Gaggenau BO 471 2 Series Instruction Manual preview
BO 471 2 Series
Brand: Gaggenau Pages: 60
Oster OGJ41010 Instruction Manual preview
OGJ41010
Brand: Oster Pages: 36
Jenn-Air JJW9330DDB Installation Instructions Manual preview
JJW9330DDB
Brand: Jenn-Air Pages: 16
Blomberg BWOS 30100 Use & Care Manual preview
BWOS 30100
Brand: Blomberg Pages: 96
DAEWOO ELECTRONICS KOR-6L65 Operating Instructions & Cook Book preview
KOR-6L65
Brand: DAEWOO ELECTRONICS Pages: 21
Magic Chef KOT-172S Use And Care Manual preview
KOT-172S
Brand: Magic Chef Pages: 24
Burco CTMW01 User Manual preview
CTMW01
Brand: Burco Pages: 16
saco MWBIC90029 Operating Instructions preview
MWBIC90029
Brand: saco Pages: 2
Hyundai H-MW2317 Instruction Manual preview
H-MW2317
Brand: Hyundai Pages: 26
Amica 10153.3ETtsDpHbQX Instruction Manual preview
10153.3ETtsDpHbQX
Brand: Amica Pages: 54
Godrej GMX 20GA5 WKM User Manual preview
GMX 20GA5 WKM
Brand: Godrej Pages: 14
Montgomery Ward FC950B Instruction Manual preview
FC950B
Brand: Montgomery Ward Pages: 10
CANDY HOOVER I-Turn 6 Series User Instructions preview
I-Turn 6 Series
Brand: CANDY HOOVER Pages: 53
NEFF U1428C2GB How To Connect preview
U1428C2GB
Brand: NEFF Pages: 24

Brands by name

Popular brands

Load more brands