Sharp R-671 Service Manual

TABLE OF CONTENTSREF No PART CODE DESCRIPTION QTY CODE3-2 HPNLCW076

R-671 - 9OPERATION SEQUENCEOFF CONDITIONClosing the door activates the primary latch switch and thestop switch.IMPORTANT:When the oven door is close

R-671 - 10TOP GRILL MODEIn this mode, the food is cooked by the grill heatingelement (top grill). Select the TOP GRILL mode with theCOOKING MODE sel

R-671 - 11PIZZA COOKINGPIZZA automatically works out the correct cooking modeand time for cooking. Chose menu with the PIZZA buttonand enter the wei

R-671 - 12SPECIAL FUSE F1 15AIf the wire harness or electrical components are short-circuited, this fuse F1 blows to prevent an electric shock offir

R-671 - 13TROUBLESHOOTING GUIDE CONT...CONDITIONPROBLEMMAGNETRONHIGH VOLTAGE TRANSFORMERH.V. RECTIFIERHIGH VOLTAGE CAPACITORPRIMARY LATCH SWIT

R-671 - 14A MAGNETRON TESTPROCEDURELETTERCOMPONENT TESTCARRY OUT 3D CHECKS.Isolate the magnetron from high voltage circuit by removing all leads con

R-671 - 15PROCEDURELETTERTEST PROCEDURES CONT...COMPONENT TESTInitial temperature ...

R-671 - 16PROCEDURELETTERCOMPONENT TESTD. A short-circuited capacitor shows continuity all the time.E. An open capacitor constantly shows a resistan

R-671 - 17PROCEDURELETTERCOMPONENT TESTIf the fuse F8A (F2) is blown by incorrect door switching replace the defective switch(es) and the fuseF8A

R-671 - 18PROCEDURELETTERCOMPONENT TESTThe touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore,unlike

R-671 - 1TABLE OF CONTENTSPageCAUTION, MICROWAVE RADIATION...

R-671 - 19PROCEDURELETTERCOMPONENT TESTTo protect the electronic circuits, this model is provided with a fine foil pattern added to the primary onth

R-671 - 20LSI(IZA909DR)The I/O signal of the LSI(IZA909DR) are detailed in the following table.Pin No. Signal I/O Description1-2 VL2-VL1 IN Power so

R-671 - 2112 P56 OUT Oven lamp and turntable motor driving signal(Square Waveform : 50Hz).To turn on and off shut-off relay (RY1).The square wavefor

R-671 - 2227 RESET IN Auto clear terminal.Signal is input to reset the LSI to the initial state when power is applied. Temporarilyset to "L&quo

R-671 - 231. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling these parts, t

R-671 - 246. Discharge the H.V. capacitor before carrying out anyfurther work.7. Do not operate the oven with the outer case removed.N.B.; Step 1, 2

R-671 - 25HIGH VOLTAGE TRANSFORMER REMOVAL1. CARRY OUT 3D CHECKS.2. Disconnect the filament leads of high voltage trans-former from high voltage cap

R-671 - 26REMOVAL1. CARRY OUT 3D CHECKS.2. Disconnect the wire leads from the fan motor.3. Remove the two (2) screws holding the fan motor to thepow

R-671 - 27Removal1. CARRY OUT 3D CHECKS.2. Remove the one (1) screw holding the green/yellowwire to the power angle.3. Disconnect the leads of the p

R-671 - 28If the primary latch switch, stop switch and monitor switchdo not operate properly due to a mis-adjustment, thefollowing adjustment shoul

R-671 - 2CAUTIONMICROWAVE RADIATIONPersonnel should not be exposed to the microwave energy which may radiate from themagnetron or other microwave ge

R-671 - 295. Catch two (2) pins of door panel on two (2) hole of upperand lower oven hinges.6. Re-install choke cover to door panel by pushing.Note

R-671 - 30MICROWAVE MEASUREMENTAfter adjustment of door latch switches, monitor switchand door are completed individually or collectively, thefollow

R-671 - 31TEST DATA AT A GLANCEPARTS SYMBOL VALUE / DATASpecial fuse F1 15A / 250VFuse F2 F 8AThermal cut-out (HVT) TC1 145°C Off / 115˚C OnThermal

R-671 - 32Note:AC CORD CONNECTIONBRN : BROWNBLU : BLUEG-Y : GREEN AND YELLOW STRIPE/15 : SECTIONAL AREA OF 1.5mm2 MIN." " Indicates compon

R-671 - 33Figure O-3(b) Oven Schematic-Grill cooking Condition (BOTTOM GRILL mode)Figure O-2 Oven Schematic-Microwave cooking ConditionFigure O-3(a)

R-671 - 34Figure O-4(b) Oven Schematic-Dual cooking Condition (Microwave and Bottom Grill mode)SCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED.2. TOP

R-671 - 35Figure S-1. Pictrorial DiagramCIRCUIT DIAGRAMS CONT...BLUWHTYLWWHTBRNTC2:THERMAL CUT-OUT(OVEN)TC1:THERMAL CUT-OUT(HVT)OL: OVEN LAMP 

R-671 - 36Figure S-2. Control Panel Circuit+–+–+–+–A 1LD1T1CN-ACN-CWH-B14abcd86Back LightD1D1-411ES1Q42SB1238Q40DTA143ESQ2DTA143ESQ20 DTA143ESQ2

R-671 - 37Figure S-3. Printed Wiring BoardLD5R51DCUTSW6SW4SW92423222120C51R50R53R52SW1SW7VR11ABC23C50WH - BSW8SW5( KEY AND JOG UNIT )LD5R51DCUTSW6SW

R-671 - 38CONTROL PANEL PARTS3- 1 DPWBFB840WRK0 U Control unit 1 BL3- 1A QCNCMA453DRE0 U 5-pin connector (CN-A) 1 AC3- 1B QCNCMA414DRE0 U 2-pin conn

R-671 - 3WARNINGNever operate the oven until the following points are ensured.(A) The door is tightly closed.(B) The door brackets and hinges are no

R-671 - 39∆∆∆∆CONTROL PANEL PARTS CONT...REF. NO. PART NO. § DESCRIPTION Q'TY CODER1-2 VRS-B13AA511J U Resistor 510 ohm 1W 2 ABR4-5 VRD

R-671 - 40OVEN PARTS CONT...REF. NO. PART NO. § DESCRIPTION Q'TY CODE4-12 LANGQA007URP0 U Air duct angle 1 AG4-13 LANGQA008URP0 U Grill heater

R-671 - 41OVEN PARTSNOTE:In the event of removing the turntablemotor cover, this part should be refit-ted using screw connection:LX-CZS030WRE0 (Ref.

R-671 - 42DOOR PARTSCONTROL PANEL PARTSCONTROL PANEL/DOOR PARTS4-275-75-85-85-85-85-35-45-55-15-25-63-93-73-103-43-33-133-113-123-63-23-53-83-14x 63

R-671 - 43PACKING AND ACCESSORIESTURNTABLE TRAYRACKPRINTED MATTERACCESSORY HOLDER(SPADPA010URE0)TOP PAD ASSEMBLY(FPADBA008URK0)BOTTOM PAD ASSEMBLY

R-671 - 44®'98 SHARP CORP. (7S1.31E) Printed in U.K.

R-671 - 4REMEMBER TO CHECK 3D1) Disconnect the supply.2) Door opened, and wedged open.3) Discharge high voltage capacitor.WARNING: AGAINST THE CHARG

R-671 - 5E Los hornos de microondas contienen circuitos eléctricos capaces de producir voltajes de alta tensión y descargaseléctricas. Para evitar e

R-671 - 6II forni a microonde contengono un circuito elettrico in grado di generare tensioni e correnti estremamente elevate.L’eventuale contatto co

R-671 - 7SPECIFICATIONITEM DESCRIPTIONPower Requirements 230 Volts50 HertzSingle phase, 3 wire earthedPower Consumption Microwave cooking 1.3 kW Ap

R-671 - 8OVEN9. Door seals and sealing surfaces10.Ventilation openings11.Outer cabinet12.Power supply cord13.Turntable14.Rack1. Control panel2. Oven