Sharp R-402JW Service Manual

PRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLE EXPO-SURE TO EXCESSIVE MICROWAVE ENERGYCHAPTER 1. WARNING TO SERVICE PERSONNEL

R402JWT6 – 1R402JWTService Manual CHAPTER 6. OPERATION[1] DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions duri

R402JWT6 – 2[2] OVEN SCHEMATIC1. Off Condition Figure O-1. Oven Schematic

R402JWT6 – 3[3] DESCRIPTION AND FUNCTION OF COMPONENTS1. DOOR OPEN MECHANISMThe door is opened by pushing the open button on the control panel,refer t

R402JWT7 – 1R402JWTService Manual CHAPTER 7. TROUBLESHOOTING GUIDE When troubleshooting the microwave oven, it is helpful to follow the Sequence of Op

R402JWT8 – 1R402JWTService Manual CHAPTER 8. TEST PROCEDURES[1] Procedure A: MAGNETRON ASSEMBLY TEST1. Disconnect the power supply cord, and then remo

R402JWT8 – 25. Reconnect all leads removed from components during testing.6. Reinstall the outer case (cabinet).7. Reconnect the power supply cord aft

R402JWT8 – 3[7] Procedure F: SECONDARY INTERLOCK SYSTEM TEST1. DOOR SENSING SWITCH1. Disconnect the power supply cord, and then remove outer case.2. O

R402JWT8 – 43. Discharge high voltage capacitor.4. If the monitor fuse is blown when the door is opened, check the primary interlock switch, secondary

R402JWT8 – 5b) When touching the pads, no pads produce a signal.2) In connection with indicatorsa) At a certain digit, all or some segments do not lig

R402JWT8 – 6[13] Procedure L: RELAY TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Discharg

CONTENTSPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLE EXPO-SURE TO EXCESSIVE MICROWAVE ENERGYBEFORE SERVICINGCHAPTER 1. WARN

R402JWT8 – 75) Make a visual inspection of the varistor. Check for burned damage and examine thetransformer with a tester for the presence of layer sh

R402JWT9 – 1R402JWTService Manual CHAPTER 9. TOUCH CONTROL PANEL ASSEMBLY[1] OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the

R402JWT9 – 218 P50 OUTMagnetron high-voltage circuit driving signal.To turn on and off the cook relay (RY2). The signals holds “L” level during microw

R402JWT9 – 356-72 SEG16-SEG0 OUTSegment data signal.Connected to LCD. The relation between signals are as follows:LSI signal (Pin No.) LCD (seg

R402JWT9 – 4[3] SERVICING FOR TOUCH CONTROL PANEL1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of the

R402JWT10 – 1R402JWTService Manual CHAPTER 10. PRECAUTIONS FOR USING LEAD-FREE SOLDER[1] Employing lead-free solderThe “Main PWB” of this model employ

R402JWT11 – 1R402JWTService Manual CHAPTER 11. COMPONENT REPLACEMENT AND ADJUSTMENT PROCE-DURE[1] WARNINGSPlease refer to “OVEN PARTS, CABINET PARTS,

R402JWT11 – 2[2] OUTER CASE REMOVALTo remove the outer case, procedure as follows.1. Disconnect the power supply cord.2. Open the oven door and block

R402JWT11 – 33. Hold the chassis support to the oven cavity front plate and the mag-netron with the two (2) screws.4. Reconnect the wire leads to the

R402JWT11 – 4 Back light PWB installationCAUTION: When the back light PWB is installed into the square holeof the c

R402JWTiR402JWTService Manual PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOIDPOSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGYBEFOR SERV

R402JWT11 – 5[12] DOOR SENSING SWITCH/PRIMARY INTERLOCK SWITCH AND MONITOR SWITCHREMOVAL1. REMOVAL1. Disconnect the power supply cord and remove outer

R402JWT11 – 63. Insert a putty knife (thickness of about 0.5mm) into the gapbetween the door stopper and the choke cover to free engagingparts as show

R402JWT12 – 1R402JWTService Manual CHAPTER 12. CIRCUIT DIAGRAMS[1] Pictorial Diagram (Figure S-1)Figure S-1. Pictorial DiagramHIGHVOLTAGECAPACITORH.V.

R402JWT12 – 2[2] Control Panel Circuit (Figure S-2)Figure S-2. Control Panel Circuit LCD (RLCDSA155DR ZZ)R6815KR6915KR7015K15KR7215KR74㨪R78:270Kx5C60㨪

R402JWT12 – 3[3] Printed Wiring Board (Figure S-3)Figure S-3. Printed Wiring Board

PARTS LISTSHARP CORPORATIONThis document has been published to be usedfor after sales service only.The contents are subject to change without notice.R

R402JWT 2[1] OVEN PARTS2-11-64-156-34-134-116-41-104-34-54-76-26-12-27-11-124-107-37-34-11-137-97-57-67-87-84-47-101-54-87-71-41-44-67-84-21-91-82-32-

R402JWT3NO. PARTS CODEPRICE RANKNEW MARKPART RANKDESCRIPTION[1] OVEN PARTSELECTRIC PARTS1-1 FPWBFA417WRKZ AYNoise filter assembly1-1 FPWBFA389WRKZ AWN

R402JWT 4[2] DOOR & CONTROL PANEL PARTSActual wire harness may be different from illustration.6-66-55-65-75-35-43-56-73-43-33-25-15-25-55-83-13-1-

R402JWT5NO. PARTS CODEPRICE RANKNEW MARKPART RANKDESCRIPTION[2] DOOR & CONTROL PANEL PARTSCONTROL PANEL PARTS3-1 FPNLCB902WRKZ BAPanel sub assembl

R402JWT1 – 1R402JWTService Manual CHAPTER 1. WARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of producing very high voltage and

R402JWT6INDEXPARTS CODE No.PRICE RANKNEW MARKPART RANK[ D ]DPWBFC531WRKZ 2-3-4 BK[ F ]FACCDA083WRE0 1-1-7 AQFACCDA085WREZ 1-1-7 AQFACCDA103WREZ 1-1-7

R402JWT2 – 1R402JWTService Manual CHAPTER 2. MICROWAVE MEASUREMENT PROCEDURE[1] Requirements:1. Microwave leakage limit (Power density limit): The pow

R402JWT3 – 1R402JWTService Manual CHAPTER 3. FOREWORD AND WARNING[1] FOREWORDThis Manual has been prepared to provide Sharp Electronics Corp. Service

R402JWT4 – 1R402JWTService Manual CHAPTER 4. PRODUCT DESCRIPTION[1] SPECIFICATIONSITEM DESCRIPTIONPower Requirements120 Volts 60 HertzSingle phase, 3

R402JWT5 – 1R402JWTService Manual CHAPTER 5. GENERAL INFORMATION[1] GROUNDING INSTRUCTIONSThis oven is equipped with a three prong grounding plug. It

R402JWT5 – 22. TOUCH CONTROL PANELNOTE: Some one-touch cooking features such as “MINUTE PLUS” are disabled after three minutes when the oven is not in