ESP 39428 Manuale di Servizio

R-930CSIn the interest of user-safety the oven should be restored to its originalcondition and only parts identical to those specified should be used.

8R-930CSCONVECTIONMOTORTHERMISTORSensing VoltageONOFFONOFFONOFF0 2 24 30 64 (sec.)3 sec.Sensing the voltage across the temperature measurement circu

9R-930CSFigure O-2. Oven Schematic-Microwave Cooking ConditionSCHEMATIC1. DOOR CLOSED.2. COOKING TIME PROGRAMMED.3. “START” PAD TOUCHED.Figure O-1. Ov

10R-930CSDESCRIPTION AND FUNCTION OF COMPONENTSSCHEMATIC1. DOOR CLOSED.2. CONVECTION PAD TOUCHED.3. DESIRED TEMP. TOUCHED.4. COOKING TIME PROGRAMMED.5

11R-930CScondition develops in the magnetron due to cooling fanfailure, obstructed air guide, dirty or blocked air intake, etc.Under normal operation,

12R-930CSair is channelled through the cavity to remove steam andvapors given off from the heating foods. It is then exhaustedat the top of the oven c

13R-930CSA MAGNETRONB POWER TRANSFORMERC H.V. RECTIFIER ASSEMBLYD HIGH VOLTAGE CAPACITORE SECONDARY INTERLOCK SWITCHF PRIMARY INTERLOCK SYSTEMG MONITO

14R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it ope

15R-930CSC HIGH VOLTAGE RECTIFIER TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Discharge

16R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST5. Reconnect all leads removed from components during testing.6. Reinstall the outer case (cabine

17R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTI MAGNETRON TEMPERATURE FUSE TEST1. Disconnect the power supply cord, and then remove outer case.

R-930CSPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY(a) Do not operate or allow the ove

18R-930CS1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Discharge high voltage capacitor.4. Dis

19R-930CSP TOUCH CONTROL PANEL ASSEMBLY TESTThe touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore,unl

20R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST2. Control UnitThe following symptoms indicate a defective control unit. Before replacing the c

21R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it ope

22R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST3) Discharge high voltage capacitor.4) Follow the troubleshooting guide given below for repair.ST

23R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTpermit adequate ventilation, be sure to install so as not to block these vents. There should be s

24R-930CSTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST(8) After that procedure, re-connect the power supply cord.(9) Check the sensor cook operation pr

25R-930CSThe touch control section consists of the following unitsas shown in the touch control panel circuit.(1) Key Unit(2) Control UnitThe principa

26R-930CSVARI MODE ON TIME OFF TIMEP-HI (100% power) 32 sec. 0 sec.P-90 (approx. 90% power) 30 sec. 2 sec.P-80 (approx. 80% power) 26 sec. 6 sec.P-70

27R-930CSPin No. Signal I/O Description18 P50 OUT Damper motor relay driving signal.To turn on and off shut-off relay(RY4).19 P47 OUT Heating element

1R-930CSWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowing parts

28R-930CSPin No. Signal I/O Description37 P23 OUT Segment data signals.The relation between signals and indicators are as follows:Signal Segment Signa

29R-930CS(1) Structure of Absolute Humidity SensorThe absolute humidity sensor includes two thermistorsas shown in the illustration. One thermistor is

30R-930CS1. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of the circuits.When handling these parts, the

31R-930CSTo remove the outer case, proceed as follows.1. Disconnect the power supply cord.2. Open the oven door and block it open.3. Remove the two (2

32R-930CS1. Disconnect the power supply cord and then removeouter case.2. Open the oven door and block it open.3. Discharge high voltage capacitor.4.

33R-930CS1. Disconnect the power supply cord.2. Remove the turntable tray, and the turntable support outof the oven cavity.3. Turn the oven upside dow

34R-930CSCONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVALTo remove the control panel, procedure as follows:1. Disconnect the power supply cord and then

35R-930CSDOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL1. Disconnect the power supply cord and then removeouter case.2. Ope

36R-930CSRE-INSTALLRE-INSTALLLOWER OVEN HINGEUPPER OVEN HINGEDOOR ASSEMBLYLATCHHEADSDOOR REPLACEMENT AND ADJUSTMENTREMOVAL1. Disconnect the power sup

37R-930CSRemove door assembly, refer to "Door Replacement".Replacement of door components are as follows:CHOKE COVER1. Place door assembly o

2R-930CSMICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave radiation emit

38R-930CS645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramTURNTABLE MOTORGRYBRNORGGRNREDBLKDAMPER MOTORCOOLINGFAN MOTORREDBLKOVENTHERMAL

39R-930CS645123645123ABCDEFGHABCDEFGHFigure S-2. Control Panel Circuit+–+–+–+–+–+–A 9A 7A 1A 3A 5E 1 E 2 E 5 E 6 E 3 E 4 F 1 F 2 F 3G 1G 2G 3G 4G 5 G

40R-930CS645123645123ABCDEFGHABCDEFGHFigure S-3. Printed Wiring BoardRR0 121311111165432111357 945 783314581212123233 64346913CONVHEATERCOMRED BRNORG

41R-930CSPARTS LISTELECTRICAL PARTS1- 1 FACCDA075WRE0 Power supply cord 1 AN1- 1 FACCDA048WRE0 Power supply cord (Interchangeable) 1 AT1- 2 FFS-BA012W

42R-930CSREF. NO. PART NO. DESCRIPTION Q'TY CODED20-26 VHD1SS270A/-1 Diode (1SS270ATA) 7 AAD30-31 VHD1SS270A/-1 Diode (1SS270ATA) 2 AAD70-77 VHD1

43R-930CSREF. NO. PART NO. DESCRIPTION Q'TY CODE4-22 NCPL-A021WRF0 Turntable coupling 1 AE4-23 PCOVPA301WRE0 Waveguide cover 1 AE4-24 PCUSUA197WR

44R-930CS7-24 XOTSD40P12000 Screw; 4mm x 12mm 16 AA7-25 XHPSD30P08000 Screw; 3mm x 8mm 2 AA7-26 XNESD40-32000 Nut; 4mm x 3.2mm 2 AA7-27 XNEUW40-32000

45R-930CS645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS1-101-117-242-17-242-67-127-16A7-47-241-197-244-327-194-334-414-157-261-147-10TO OVEN BASE

46R-930CS'99 SHARP CORP. (9S2.530E) Printed in U.S.A645123645123ABCDEFGHABCDEFGH5-35-125-15Actual wire harness may be different than illustration

26R-930CS'99 SHARP CORP. (5S2.530E) Printed in U.S.ACOPYRIGHT © 1999 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be r

3R-930CSPRODUCT DESCRIPTIONGENERAL INFORMATIONOPERATIONTROUBLESHOOTING GUIDEAND TEST PROCEDURETOUCH CONTROL PANELCOMPONENT REPLACEMENT ANDADJUSTMENT P

4R-930CSSPECIFICATIONITEM DESCRIPTIONPower Requirements 120 Volts13.0 Amperes (Microwave) / 13.0 Amperes (Convection)60 Hertz / Single phase, 3 wire

5R-930CSElectrical RequirementsThe electrical requirements are a 115 -120 volt 60 Hz, AC only,15 or 20 amp. fused electrical supply. It is recommended

6R-930CSOPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functions duringoven operation.OFF CONDITIONClosing the

7R-930CSmotor and convection motor are turned on.2. The coil of relay (RY4) is energized by the control unit.The damper is moved to the closed positio