Sharp R-8320E Service Manual Download Page 76

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POWER SOURCE CIRCUIT

Power Source Circuit on Relay Unit

AC is applied to the primary of the

) through a filter circuit consisting of

and

The secondary output of

is full-wave rectified by a

bridge circuit of D3 to D6 and smoothed by an electrolytic
capacitor C2 to DC voltage

DC-DC Converter Circuit
By switching on power supply, the starting base current

BS) flows to transistor

through resistor R3 and the

collector currnet (IC) of

begins to flow through the

primary winding

of the DC-DC converter transformer

The current (IC) varies the magnetic flux of the transformer
core and induces voltage in the base winding 3-8.
The induced voltage is positive

and produces the

base current

through resistor

and the total

current is I B = I BS + I BF.
Therefore, if the current amplification factor is

the

collector current

increases with time until it

reaches

x lg. When the collector current (I,) reaches

x IB, IC is saturated and the base winding voltage

induced by the variation of core magnetic flux turns to zero

and accordingly turns to zero.
Thus the transistor

is rapidly turned off. While

on, the diodes

and D8 on the secondary output circuit

are in reverse polarity and turned off. When

is turned

off, the magnetic flux stored in the core begins to reduce
and induces voltage on the secondary output terminals.
At the time, the base winding retains the

and

remains in the “OFF” position.

R E L A Y U N I T

4 0

Power source circuit

When variation of magnetic flux turns to zero, the above
steps are repeated and the collector waveform will be as

illustrated in Fig. 19.
As a result, when the VDD voltage increases larger than the

sum of

and

these are turned on and the base

current runs through

and

By the above, bias of

is changed and ON-time of

controlled, thereby stabilizing the output voltage.
C8 and

Voltage smoothing capacitors

C7 and

Noise by-pass capacitors

Figure 19. Normal Waveform

C O N T R O L U N I T

V G I - 3 O V l

DC-DC Converter circuit

Figure 18.

Power Source Circuit and DC-DC Converter Circuit

Summary of Contents for R-8320E

Page 1: ...AL 9 KASMY82101 R J M SHARP CONVECTION MICROWAVE OVEN R 8320E In the interest of user safety the set should be restored to its original condition and only parts identical to those specified be used SHARP CORPORATIOltl l ...

Page 2: ...N Personnel should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating devices if it is improperly used or connected All input and output microwave connections waveguides flanges and gaskets must be secured Never operate the device without a microwave energy absorbing load attached Never look into an open waveguide or antenna while the device i...

Page 3: ... Start Cooking 27 Operation for Memory Cooking 29 CHAPTER Ill OPERATION 31 Normal Cooking Sequence 31 Description of Operating Sequence Australia Model 31 OffCondition 31 Microwave Cooking Condition 32 HighCooking 32 Medium High Medium or Medium Low Defrost Cooking 32 Convection Cooking Condition 33 Preheating Condition 33 Convection Cooking Condition 33 Automatic Mix Cooking Condition 34 Descript...

Page 4: ...tch Test 56 MonitorSwitchTest 5 6 BlownFuse 5 7 Magnetron Therm0 Cut out Test 57 Cook Relay or Heater Relay Test 57 StopSwitchTest 5 7 Touch Control Panel Assembly Test 57 Heating Element Test 58 ThermistorTest 5 8 Damper Motor Test _ 58 Damper Switch Test 58 RelayUnitTest 5 9 CHAPTER V TOUCH CONTROL PANEL ASSEMBLY 60 Outline of Touch Control Panel 60 KeyUnit 6 0 ControlUnit 6 0 Description of LSI...

Page 5: ...h Switch and Monitor Switch Australia Model Removal 106 Lower Latch Switch Removal 106 Upper Latch Switch Lower Latch Switch and Monitor Switch Australia Model Adjustment I0 7 Control Panel Assembly and Components Removal 108 Door Replacement and Adjustment 110 MICROWAVE MEASUREMENT PROCEDURE _ I1 1 SCHEMATIC DIAGRAM Australia Model I12 PICTORIAL DIAGRAM Australia Model I13 PICTORIAL DIAGRAM South...

Page 6: ...cy of 2 450 Megahertz enters the food the molecules align themselves with the energy However cooking by microwave energy only produces no brown ing or searing unless cooking a roast of sufficient thick ness This microwave oven is therefore equipped with a sheath heater to provide browning of the food The combination of the heater plus high speed circulation of air by a circulating fan around the f...

Page 7: ...s for using the Auto Touch control system Please use these instructions and practice programming the oven step by step until you are thoroughly familiar with its operation In giving directions examples of foods have been used so that you may become familiar with the practical uses for these features However we suggest that yocr first practice operating the oven with one cup of water in a glass mea...

Page 8: ...art Clock Memory Entry and Memory Recall N U M B E R A N D T E M P E R A T U R E S E L E C TION CONVECTION PADS Touch to enter cooking times clock time or convection temperature convection FUNCTIONS PADS Touch to select microwave varibale power settings and automatic convection micro wave setting If no function pad is touched HIGH is automatically selected TIMER P A D Touch to set minute timer CLE...

Page 9: ...e the oven cavity When the door is opened the oven light comes on automatically 2 Close door securely Oven light will go out 3 Program the oven to preheat to 70 C Touch CONVECTION pad followed by 70 C pad 4 Touch COOK pad The red Convection Fan Symbol in the display will flash on and off and the display will show ICI The oven light and fan will come on the turntable will begin rotating and preheat...

Page 10: ...bers in sequence 3 1 Touch CLOCK pad again 1 m 1 11 The clock is now set and will keep the time of day If power to the unit is interrupted the display will intermittently show im after the power is reinstated To reset the clock touch CLEAR pad and then repeat the steps above NOTE This is a 12 hour clock 1 1 will appear in the readout if you attempt to enter an in correct clock time For example if ...

Page 11: ...lly cook at HIGH Each recipe in your cookbook gives instructions for the setting best suited for that particular food category As you become more familiar with the use of the Variable Cooking Control and microwave cooking you will be able to judge which power level to use for various foods 5 If food does not seem to be heating properly check the indicator immediately above the lighted digital disp...

Page 12: ...ng Control Suppose you want to heat soup for 2 minutes 15 seconds at MED HIGH Step Procedure Pad Order Display 1 Enter desired cooking time 2 Select desired Variable Cooking Control setting 3 Touch the COOK pad The cooking time will count down to zero When the timer reaches zero all indicators will go out and an audible signal will sound The time of day will reappear on the display NOTE If you acc...

Page 13: ...r Display 1 Enter desired time for first cook ing sequence 2 Select first Variable Cooking Con trol setting 3 Enter desired time for second cooking sequence 4 Select second Variable Cooking Control setting 5 Touch the COOK pad The timer begins to count down When it reaches zero When the timer reaches zero all indicator lights will go out and an audible signal will sound The time of day will reappe...

Page 14: ...The racks are for convection or combination cooking only do not use for microwave cooking alone Do not substitute similar types of racks for these specially designed ones Baking Rack Broiling Trivet This rack is used for two levels cooking Used for roasting or broiling to allow such as layer cakes muffins cookies etc juices to drain away from food CONVECTION HEATING Some foods are best when cooked...

Page 15: ...en 10 minutes at 250 C 2 Prepare and season meat on both sides as desired 3 Place meat on broiling trivet or turntable 4 Consult broiling chart in your Sharp Carousel Convection Microwave Cookbook set timer for correct cooking time 5 Turning meat over is not necessary 6 Test for doneness slit center of meat check for desired color red rare pink medium gray well done jHelpfulHints 1 Do not cover br...

Page 16: ...desired doneness using a meat thermometer If desired a dual safe microwave conven tional thermometer may be inserted in the meat at the beginning of cooktime 6 Let meat stand tented with to 15 10 minutes before slicing A dual safe thermometer is specially designed to withstand high temperature and can safely be used with heat or microwaves Do not use conventional meat thermometers for mix cooking ...

Page 17: ... completely done let stand few minutes to complete cooking in oven a I Recommended Baking Utensils Sharp Carousel metal turntable Baking rack Broiling trivet Metal baking pans Paper board containers usable in oven Aluminum foil containers Heat resistant glass Corning Ware El Note During mix baking some metal baking utensils may cause arcing when they come in contact with the turntable oven walls o...

Page 18: ...preheat to 150 C Step Procedure Pad Order Display 1 Touch the CONVECTION pad riii Aq I 2 Enter the desired preheating tem peratu re 11 3 Touch COOK pad r j t tur Convection Fan Symbol will flash on and off When oven temperature rises above 4O C the actual oven temperature will appear on display When the oven reaches the programmed temperature the Convection Fan Symbol will stop flashing and begin ...

Page 19: ...emperature 4 Touch COOK pad If you wish to check the tem perature you set at any time during cooking touch CON VECTION pad Convection Fan Symbol will rotate and the cooking time will count down to zero The oven temperature will appear on the display as long as the CONVECTION pad is touched The oven will continue to count down to zero during this time When timer reaches zero an audible signal will ...

Page 20: ...and off When the oven reaches the programmed temperature the Convection Fan Symbol will stop flashing and begin rotating and an audible signal will sound 4 times The oven will then begin temperature holding operation The oven will automatically hold at the desired temperature for 15 minutes This will allow time to finish preparing the food to be cooked You may open the door anytime during this hol...

Page 21: ...tion Fan Symbol will stop flashing and begin rotating and an audible signal will sound 4 times The oven will then begin temperature holding operation The oven will automatically hold at the desired temp erature for 15 minutes This will allow time to finish preparing the food to be cooked YOU may open the door anytime during this holding time 7 Push the Door Open button FJ j 8 Place food in oven Cl...

Page 22: ...variety of foods information See your Sharp Carousel Convection Microwave Cookbook for complete cooking To Cook by Mix Settings Suppose you want to roast lamb for 50 minutes on HIGH MIX ROAST Step 1 2 Procedure Enter desired cooking time Touch HIGH MIX ROAST pad 3 Touch COOK pad Pad Order 11 p fggq jl I COOK I Display 11 I l II I7 1 I l I 1 1 t x 1 1 l 1 l I 1 1 t COOK MIX Convection Fan Symbol wi...

Page 23: ...uch 180 C pad 1 I 4 Touch COOK pad I 11 COOK Convection Fan Symbol will rotate and the cooking time If you wish to check the temper will count down to zero ature you set at any time during cooking touch CONVECTION pad FCONVfCTlDN yr gl The oven temperature will appear on the display as long as CONVECTION pad is touched The oven will continue to count down to zero during this time When the timer re...

Page 24: ...lash on and off When the oven reaches the programmed temperature Convection Fan Symbol will stop flashing and begin rotating and an audible signal will sound 4 times The oven will then begin temperature holding operation The oven will automatically hold at the desired temperature for 15 minutes This will allow time to finish preparing the food to be cooked You may open the door anytime during this...

Page 25: ...ng and an audible signal will sound 4 times Oven will maintain 250 C for 15 minutes after signal sounds and Convection Fan Symbol begins to rotate If the oven door is not opened within 15 minutes the oven will automatically turn off 4 Open the door and place food in oven Usually food is placed on the broiling trivet 5 Close oven door and touch COOK pad Convection FanSymbolwilI rotate The cooking t...

Page 26: ...n Fan Symbol will begin to rotate Alter 4 hours an audible signal will sound Suppose you want to change oven temperature to any of 4O C 70 C 110 C and 130 C e Step Procedure Display 1 I Touch SLOW COOK pad I CoNV 3 s E I I Enter desired oven temperature if you want to change from 130 C j 3 Touch COOK pad Convection Fan Symbol will begin to rotate After 4 hours an audible signal will sound If the o...

Page 27: ...ased bowl or loaf pan cover with damp cloth Place dough in oven Close door Touch PROOF pad Touch COOK pad Pad Order Display CONV if I i I ri f 1 r l I t B 4 Fan Symbol will begin rotating The cooking time will count down to zero When the timer reaches zero all indicators will go out and an audible signal will sound The time of day will reappear on the display The fan will remain on until the oven ...

Page 28: ...owing the correct time of day Step Procedure Pad Order Display 1 Enter the desired start time 2 Touch AUTO START pad 3 Enter the desired cooking time The colon will flash on and off 4 Select desired HIGH MIX ROAST setting 5 Touch COOK pad Suppose you are setting at 1 OO p m It comes at 4 30 p m Convection Fan Symbol will rotate The cooking time will count down to zero When the timer reaches zero a...

Page 29: ...ad iq I The colon will flash on and off Checking the Auto Start time will not interfere with the operation of the oven The oven will still start at the designated time of day and perform the cooking sequences you have programmed To cancel Auto Start simply touch STOP pad and then CLEAR pad Minute Timer 1 The Auto Touch control panel can be used as a timer for timing up to 99 minutes 99 seconds The...

Page 30: ...nstruc tions Suppose you prepare two scrambled eggs every morning If two scrambled eggs cooked for 2 minutes 20 seconds at MED HIGH are exactly as you like them Step Procedure Pad Order Display 1 Enter desired cooking time 2 Select desired Variable Cooking setting 3 When you are touching MEMORY ENTRY pad The time of day will reappear on the display and MEMORY indicator will go out That information...

Page 31: ...g MEMORY RECALL pad It is not necessary to wait for the memorized cooking program to be reviewed before touching COOK pad The Memory can be used for any of the programs described on the previous pages including 1 cooking by time using the Variable Cooking Control 2 one to four step cooking up to four sequences 3 defrosting 4 convection cooking At times you may forget exactly what information is st...

Page 32: ...t be touched again 4 A beep will sound four times to signal when oven temperature has reached 70 C and the Convection Fan Symbol will stop flashing and begin to rotate 5 Place the food to be cooked in the oven and close the door firmly 6 Set the convection cooking time by touching the NUMBER pads and touching the CONVECTION and 7O C pads and COOK pad must be touched again The convection cooking ti...

Page 33: ...d de energizing the oven lamps and the turntable motor B The shut off relay RY3 will be de ener gized de energizing the cooling fan motor C The cook relay will be de energized opening the circuit to the power transformer stop ping the generation of microwave energy by the magnetron D The COOK and HIGH indicators will go out and the time of day will reappear E The end of cooking signal will sound a...

Page 34: ...preheat temperature The oven will shut down completely after 15 minutes CONVECTION COOKING CONDITION When the preheat temperature is reached a beep signal will sound four times indicating that the holding tempe rature has been reached in the oven cavity open the door and place the food to be cooked in the oven Then program desired cooking time and convection tem perature by touching the NUMBER pad...

Page 35: ...ed temperature the following operations occur 6 l The 240 volts A C is supplied to the heating element and power transformer alternately 6 2 The heating element operates through the heater relay contacts and the power transformer operates through the cook relay contacts 6 3 These are operated by the control unit within a 32 second time base The relationship between the convection and microwave pow...

Page 36: ... 1 I MOTOR STOP I SWITCH I I DAMPER 1 MOTOR i HEATER iCOOK RELAY IRELAY I I ZOOLING I I I I I I I I I I FAN MOTOR I I I I I I IEATING LEMENT H E A T E R R E L A Y J CONTACTS L m I 1 FUSE MlOA 1 LOWER LATCH SWITCH MAGNETRON THERM0 CUT OUT COOK RELAY CONTACTS I I I POWER TRANSFORMEF HIGH FECTIFIER VOLTAGE h L JJ MAGNETRON Figure 1 Oven Schematic Off Condition Australia Model 35 ...

Page 37: ... lOTOR STOP J Ok Rr V b 0 f c1y c2t I DAMP J 1 SWITCH I I DAMPER I MOTOR s m iHEATER iCOOK RELAY IRELAY 1 1 ELEMENT HEATER RELAY 1 CONTACTS L __ RECTIFIER VOLTAGE RECTIFIER VOLTAGE FUSE MlOA LOWER LJTCH SWITCH MAGNETRON THERM0 CUT OUT COOK RELAY CONTACTS POWER TRANSFORMER L I t MAGNETRON Figure 2 Oven Schematic Microwave Cooking Condition Australia Model 36 ...

Page 38: ...D TOUCHED 4 COOK PAD TOUCHED I I I r 1 T U R N TABLE MOTOR STOP I L J I SWITCH II I s I I iLEMENT HEATER RELAY 1 CONTACTS L _ _ _ mFUSE MlOA LOWER LATCH SWITCH y MAGNETRON THERM0 b CUT OUT COOK I RELAY Y CONTACTS 1 POWER TRANSFORMEf MAGNETRON Figure 3 Oven Schematic Convection Cooking Condition Australia Model 37 ...

Page 39: ...is energized by the con trol unit and relay unit The relay contacts close to provide a current path to the power transformer l 5 The 220 volts A C is supplied to the primary winding of the power transformer and is con verted to 3 15 volts A C output on the filament winding l 6 The 3 15 volts A C output from filament wind ing heats the magnetron filament 1 7 The 2400 volts A C output from the high ...

Page 40: ...ature circuit and thermistor open ning the circuit to the heating element 10 3 A beep signal will sound four times The preheat temperature has been reached 10 4 The oven will continue to function minutes turning on and off as needed tain the selected preheat temperature The oven will shut down completely minutes CONVECTION COOKING CONDITION for 15 to main after 15 When the preheat temperature is r...

Page 41: ...lement 5 Now the oven is in the convection cooking condition 6 When the oven temperature reaches the selected temperature the following operations occur 6 1 The 220 volts A C is supplied to the heating element and power transformer alternately 6 2 The heating element operates through the heater relay contacts and the power transformer operates through the cook relay contacts 6 3 These are operated...

Page 42: ...zL I SWITCH I I DAMPER IHEATER iCOOK RELAY IRELAY I 1 I I I I I f I I i I I I ___ I I ELEMENT H E A T E R R E L A Y 1 CONTACTS L L L T A A MAGNETRON MAGNETRON Figure 4 Oven Schematic Off Condition Figure 4 Oven Schematic Off Condition South Africa Model South Africa Model 3 FUSE MIOA FJiss h CAPACITOR LOWER LATCH SWITCH MAGNETRON THERM0 CUT OUT COOK RELAY CONTACTS POWER TRANSFORMER 41 ...

Page 43: ...O vMAGNETRON THERM0 b CUT OUT IDAMP J I SW ITCH SCHEMATIC LEMENT H E A T E R R E L A Y I CONTACTS i _ NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 COOKING TIME PROGRAMMED 3 VARIABLE COOKING CONTROL HIGH 4 COOK PAD TOUCHED COOK RELAY CONTACTS I I POWER TRANSFORMER i I HIGH RECTIFIER VOLTAGE I L I MAGNETRON Figure 5 Oven Schematic Microwave Cooking Condition South Africa Model 42 ...

Page 44: ...1 TURNTABLE I I SWITCH H2 1 TH l I I I I I 4 i IKT I llK TAY I 1 1 1 1 DAMP L J 1 SWITCH I iLEMENT HEATER RELAY 1 CONTACTS L w m __ POWER TRANSFORMEI I FUSE MlOA IL LINE A BYPASS CAPACITOR LOWER LATCH SWITCH MAGNETRON THERM0 CUT OUT COOK RELAY CONTACTS HIGH 1 Y II I RECTIFIER VOLTAGE 7 4 MAGNETRON Figure 6 Oven Schematic Convection Cooking Condition South Africa Model 43 ...

Page 45: ...owever when abnormally high temperature within the magnetron approaches a critical level the therm0 cut out will interrupt the circuit to the power trans former and will interrupt the cook cycle When the magnetron has cooled to safe operating temperature the therm0 cut out closes and the cook cycle will resume COOK RELAY The cook relay is mounted on the front portion of the relay chassis The coil ...

Page 46: ...ed and the convection fan stops operating Although the damper will open and the cooling fan motor normally turn off when the convection time reaches 0 if the temperature of oven has reached approximately 120 C or higher at that time or later the cooling fan motor will continue to operate cooling the oven Pushing in ambient air through the vent holes in the damper section the cooling fan motor circ...

Page 47: ... is fed to the voltage doubler circuit VOLTAGE DOUBLER CIRCUIT The voltage doubler circuit consists of a rectifier and a capacitor The 2400 volts A C from the high voltage wind ing of the power transformer is applied to the voltage doubler circuit where it is rectified and converted to approximately 4000 volts negative D C needed for magnetron operation Rectifier The rectifier is solid state devic...

Page 48: ... Motor J Mounting Bracket 11 Figure 12 Damper Operation l 2 Contacts of shut off relay RY4 close and supljly 220 240 volts A C to the damper motor The damper motor is energized opening the damper door l 3 When damper is moved to the open position by the motor cam and arm lever damper switch is closed ON position l 4 The signal of damper switch is re sensed in the control unit and shut off relay RY...

Page 49: ...nd RY3 are energized The components which are connected to the relay contacts are energized Also the heater relay is energized Relationship between pin Nos and Connections CONNECTOR CONNECTOR D Pin No I O Pin No I O DESCRiPTlON C l IN Input the A C Line voltage 220 24OV 50Hz c 2 IN 1 These terminals are connected to the transformer 2 The transformer coverts 22OV 24OV A C to 17 4 volts A C output o...

Page 50: ...higher than set temperature Shut off relay RYl driving signal To turn on the shut off relay RYl One circuit of the driver IC I R 2403 is closed ON and supplies the D 3 OUT voltage to the shut off relay RYl energizing the relay and turning on the convection fan motor Shut off relay RY2 driving signal To turn on the shut off relay RY2 One circuit of the driver IC IR 2403 is closed ON and supplies th...

Page 51: ...of display tube POWER SUPPLY 220 240 50Hz I I 1 1 3 lR2403 Kl Dl D3 DO LSI l l D2 D4 D5 C F H R RYI A l R21 8 2K 797 Q20 I RY2 A683f 3 TURNTABLE MOTOR L I I 747 I I f f I 37 I 39 I I 84 MOTOR DAMPER 1 I RELAY UNIT CONTROL UNIT Figure 14 50 ...

Page 52: ...ed wire in power cord or wire harness Defective monitor switch Australia Model Replace power cord or check and repair wire harness Procedure G 88 88 does not appear in display 1 No power at outlet Check home fuse I when power cord is first plugged into wall outlet Blown fuse Procedure H Open wire in power cord wiring harnes or wiring between control panel assembly units Replace or repair wiring I ...

Page 53: ...ot go into a cook cycle when COOK key is touched Primary and or secondary interlock switches defective or out of adjustment Procedures E and F I Defective magnetron therm0 cut out 1 Procedure I Defective cook relay Defective control unit Procedure J Procedure L Defective key unit Procedure L Defective relay unit Open or loose wiring to above components Procedure Q Check and repair wiring Oven seem...

Page 54: ...lement does not heat Temperature in the oven cavity is lower or higher than preset Defective key unit Procedure L Defective thermistor Procedure N Open wiring in circuit to above Check wiring components Defective heating element Procedure M Defective heater relay Procedure J Defective relay unit Procedure 0 Defective control unit Procedure L Open or loose wire connection to the above components Ch...

Page 55: ...bsorbed by the water load To measure the microwave output power in the microwave oven the relation of calorie and watt is used When P W heating works for t second approximately P t 4 2 calorie is generated On the other hand if the temperature of the water with V ml rises AT C during this microwave heating period the calorie of the water is V AT The formular is as follows I p _ 4 2 V AT WI Our cond...

Page 56: ...Power supply voltage should be 220 240 volts POWER TRANSFORMER TEST DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING Disconnect the primary input terminals and measure the resistance of the transformer with an ohm meter Check for the continuity of the coils with the ohmmeter On the RX1 scale the resistance of the primary coil should be less than 1 1 ohm 22OV 1 2 o...

Page 57: ...LATCH SWITCH TEST Isolate the switch and connect the ohmmeter leads to the common COM and normally open NO terminals of the switch The meter should indicate an open circuit with the door opened and a closed circuit with the door closed W th the meter leads connected to the common COM and normally closed NC terminals of the switch it should indicate a closed circuit with the door opened and an open...

Page 58: ...estricted air flow to the magnetron through the opening in the chassis especially the cooling duct J COOK RELAY OR HEATER RELAY TEST Disconnect the wire leads from relay coil terminals A continuity check of the cook relay coil should indicate approximately 160 ohms Supply the 12 volts D C to the relay coil terminals and then check if there is a continuity between the contacts of relay K STOP SWITC...

Page 59: ...0 240 volts A C is supplied to the damper motor and the motor operates until the damper is opened and the damper switch closes Then the damper motor stops operating If the damper motor does not operate check for input voltage by A C volt meter at the motor 1 Disconnect the power cord from the wall receptacle 2 Disconnect the 2 pin connector of motor and connect the meter leads to the 2 pin connect...

Page 60: ... Cooling fan motor does not rotate Check voltage between pin Nos C l and B 4 with an A C voltmeter 220 240 volts A C indicated Defective oven components 220 240 volts A C not indicated Defective shut off relay RY 3 Shut off relay RY 3 does not operate See shut off relay test or control uinit 3 Damper motor does not rotate Check voltage between Pin Nos C l and B l with an A C voltmeter 220 240 volt...

Page 61: ...t The p signal is available in order to compose a basic standard time in the clock circuit It accompanies a very small error because it works on the commercial frequency 5 ACL Circuit The circuit to generate signals resetting the LSls IX2107YA IX2075YA to the initial state when power is supplied 6 Buzzer Circuit The part responsive to signals from the LSI IX2075YA to emit audible sounds key touch ...

Page 62: ..._ u j I D D l j c kJlT 1 COOK RELAY E l IMGJ E 2 D C LINE GNDI F 2 HEATER RELAY F l HEATER a I A l CONVECTION A 2 MOTOR fti FAN TURNTABLE MOTOR TTMI B 2 OVEN LAMP a 3 0 L COOLING a 4 FAN MOTOR COOLING FANI I 1 IX2107YA M58841 924SP DAMPER B 1 MOTOR DAMPER THERMISTOR DAMPER STOP SWITCH SWITCH Figure 15 Block Diagram 61 ...

Page 63: ... I I I II r l I I I I I I I KEY UNIT z G l 1 MED LOW I BROIL MED COOK MED DEFROST HIGH HIGH CLEAR G 9 A TlMER J PROOF STOP r j j IG aI I I HIGH MIXi MEMORYIMEMORY I 1 SLOW LOW MIX COOK BAKE ENTRY G 4 G l G 2 I I 7b I IX2107YA M5884i 024w f lIl I I I I I I I J I I I J 1 J 5 Block Diagram 62 ...

Page 64: ... IX2107YA are detailed in the following tables D8 421 D7 K13 K9 K5 Kl KO K4 K8 K12 Kll K3 K7 K2 K6 KlO LSI I 1 IX2107YA M58841 024SP D6 05 D4 03 02 Dl DO XIN XOUT s7 s3 S6 s2 s5 Sl s4 so VDD CNVss Figure 16 Relationship between pin Nos and Signals LSI lX2107YA 63 ...

Page 65: ... the A D converter in which LSI IX2107YA is built in The following is the relationship between signals and detected temperatures K13 Low temperature measurement 40 C 70 C K 9 High temperature measurement l 10 C 130 C 150 C 180 C 200 C 220 C 230 C 250 C 8 K5 IN Signal coming from touch key When either one of I 151 1 or 1 1 key is touched a corresponding signal out of S7 S4 will be input into KS Whe...

Page 66: ...is input to reset the LSI to the initial state when power is supplied Temporarily set to H level the moment power is supplied in this time the LSI is reset Thereafter set L level 15V 21 22 23 24 25 26 27 28 29 vss INT CNVss V D D so 1 s4 Sl s5 s2 IN Connected to GND IN Terminal not used Connected to GND IN Terminal not used Connected to GND IN Power source voltage 15V _ Voltage of power source cir...

Page 67: ...cillation input of XIN I I XIN IN Internal clock oscillation frequency setting input The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to X0 UT terminal Do OUT CONVECTION MOTOR driving signal To turn on and off the shut off relay RYI H level during CONVECTION COOK L level otherwise J G j 1J 36 DI OUT Magnetron high voltage circuit driving signal T...

Page 68: ... cooking A If oven temperature has reached approx 1 20 C or higher the signal holds H level until the oven temperature below than approx 80 C B When oven temperature has been lowered to approx 8O C the signal holds L level 40 D5 OUT Damper motor driving signal To turn on and off the shut off relay RY4 H level when cooking condition is changed from convection to microwave or from microwave to conve...

Page 69: ...iption Magnetron high voltage circuit and heating element driving signal To turn on and off the cook relay by D1 signal and the heater relay by D3 signal H level during cooking condition L level otherwise D3 26 sec L I 1 1 Dl HIGH MIX e ROAST 68 ...

Page 70: ...following tables D3 D4 D5 D6 07 08 D9 DlO Dll 012 D13 014 D15 LSI I 2 IX2075YA HD38755A50 I VDISP k VDD 17 OSCl 1 8 osc2 1 9 02 Dl DO R33 R32 R31 R30 R23 R22 R21 R20 INTl INTO R13 R12 Rll RlO R03 R02 1221 ROO Figure 17 Relationship between pin Nos and Signals LSI IX2075YA 69 ...

Page 71: ...n H level during convection condition L level otherwise _ 2 Convection Fan Symbol flashes on and off until the oven temperature is reached set temperature Signal turns to H level and L level in rapid sequence 3 Convection Fan Symbol rotates when oven temperature reached at set temperature Signal turns to H level and L level in rapid sequence GND D3 160 msec 80 msec t e l _ _________ _ 25 8 DIO Not...

Page 72: ...nal and digit are as follows Digit Signal Dight DI1 Colon D12 1 D13 2 D14 3 D1s 4 Usually one pulse is output in every p period and input into the grid of Fluorescent Display P 13 2 msec 7 G N D GND Dll 44 I 1 2 1 4 msec I D12 0 14 msec D13 1 014 D 1 46 msec D15 0 14 msec s ___ GND 3ov 71 ...

Page 73: ...SI is reset Thereafter set L level 15V 16 VBB 17 VDD 18 OSCl IN IN IN Power source voltage 1 OV 10 volt of converter circuit is input Internal clock oscillation frequency setting input The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to OS terminal 19 OS OUT Internal clock oscillation frequency control output Output to control oscillation input o...

Page 74: ...I l 2 IX2075YA By connecting this terminal to the GND count up is performed regardless of signal from l l lX2107YA 30 INTO 31 lNTl 32 R20 IN Not used Connected to GND IN I OUT Output signal to be used for data supplying with respect to D7 terminal of LSI l l lX2107YA 33 R21 OUT Segment data signals 34 R22 OUT The relation between signals and segments are as follows 35 R OUT Signal Segment 23 R33 a...

Page 75: ...Signal synchronized with commercial power source frequency This is the basic timing for all time processing i g GND 5v 13 2 msec 42 1 D2 OUT Signal to sound buzzer A Key touch sound B Completion sound C End of preheating or hold temperature sound 0 1 sec A K 2 sec B 1 sec 1 sec GND c 1 5 v 15Opsec 250psec 1 T L 1 1 f 2 5 kHz T 400x 1o 6 74 ...

Page 76: ...se winding voltage induced by the variation of core magnetic flux turns to zero and accordingly Ig turns to zero Thus the transistor Ql is rapidly turned off While Ql is on the diodes 07 and D8 on the secondary output circuit are in reverse polarity and turned off When Ql is turned off the magnetic flux stored in the core begins to reduce and induces voltage on the secondary output terminals At th...

Page 77: ...of ZDSO ZD5 o is turned on and the current iz flows Thus the base current i3 flows through the transistor Q50 to turn on 050 By the turning on of 050 a reset signal is obtained from the collector R50 zx D50 RESET ZD50 R51 t J iJ w 3 050 v c50 R52 i3 VDD 34 msec Figure 21 ACL Circuit BUZZER CIRCUIT The square waveform developed from D2 terminal of LSI l 2 is applied to the base of 060 to turn on an...

Page 78: ...R30 Temperatures 40 C through 1 10 C are detected by the low and ZD30 side of the thermistor and 130 C through 250 C by the high side R33 and VR30 are provided for compensation and fine adjustment of THERMISTOR LOW and R34 Rss and The following is the relationship between temperatures and VRs I are provided for compensation and fine adjustment DC voltages at the input terminal of LSI fX2167YA of T...

Page 79: ...dy If the anode or grid voltage is zero or negative against the filament thermo electrons can not reach the anode hence the fluorescent body is not luminescent R21 R22 R23 R30 R31 Pi Ei D5 D4 D3 DZ LSI lIX2075YA1 D15 014 011 D13 312 CIRCUIT In this model the Fluorescent Display g digits 7 segments are used for displaying figures 6 segments are used for Convection Fan Symbol and letters The Fluores...

Page 80: ...ounding high voltage power source static electricity charged in clothes etc and sometimes it is not fully protected by the built in protection circuit 1 n order to protect CMOS IC s and CMOS LSl s 1 When storing and transporting thoroughly wrap them in aluminum foil Also wrap PW boards containing them in aluminum foil 2 When soldering ground the technician as shown in the figure and use grounded s...

Page 81: ...he New control unit 2 Connect the 5 pin connector for damper switch and thermistor to the New control unit 3 Connect the 5 pin connector to the de fective relay unit 4 Connect the 1 l pin connector of defective relay unit to the New control unit Table 1 shows the relation between the indicator lamps of the checker energized relays of the relay unit and LSI I 1 signals Table 1 INDICATOR OPERATIONAL...

Page 82: ...0 CA Control Panel Assembly Defective Relay Unit Figure 25 Connectiorr Meted External of Checker t CHECKER FOR R 8320E 1 0 5 PIN CONNECTOR 0 I J I QQQQ8QOI 1 l PIN CONNECTOR EL II Ad DN CLOSEDJ DN I Go 5 PIN CONNECTOR OFF OFF K OVEN TURN COOLING CONVEC HEATER COOK DAMPER LAMP TABLE FAN TION MOTOR MOTOR MOTOR _ SENSOR REG 0 P L I A C 220124OV Figure 26 External of Checker 81 ...

Page 83: ...K I 860 HEATER CONVECTION MOTOR TURNTABLE MOTOR I r COOLING FAN MOTOR DAMPER MOTOR I i c f r I L I r 1 I c I I SWITCH 1 5K DAMPER SENSOR R EGU LATOR SWITCH SENSOR DUMMY RESISTANCE A 2 HIGH R7 R4 R2 Rl STOP SWITCH Figure 27 Checker Circuit Diagram 82 ...

Page 84: ...r CONV M LOW MED M HIGH HIGH b 1 2 3 4 5 6 7i 0 Key touch sound T 0 D Time of day 69 Completion sound 0 Light 0 Completion sound Flashing for preheat temp Rotating CHECKER SENSOR KEY AND REG CHECKER r r CHECK ITEM SWITCH OPERATION DISPLAY COPEM STOP SWITCH ON I I MAIN SWITCH ON 8 8 8 8 8 I 0 I I I I I fiL 4 _ I I j j 1 i r lLl31 I I wzG 1 i I After 13 sec MEMORY RECALL 0 I I j 0 I I C O N V E C T ...

Page 85: ...e COOK 43 C CONV 19 STOP 0 2 5 0 c CONV 20 COOK 0 t 4 3Coeeee COOK CONV 2 1 147OC 14 7Ceeeee l Check temperature COOK 14722 C CONV 0 Cooling fan motor lamp 22 STOP 0 2 5 0 c l l lights when oven tempe rature has reached approx CONV 120 C or higher 23 COOK 0 14 7Ceeeee COOK CONV l Convection fan symbol is 24 25O C 0 2 5 OCeeee rotating when setting COOK temperature is reached 25 STOP 0 26 346 0 T 0...

Page 86: ...FROST l 151 I M LOW COOK 0 COUNT DOWN l 4IGH MIX ROAST 2 0 0 c MIX 42 13 14 LOW MI BAKE 15 200 C yT i G G 0 0 CHECKER I z 5 CHECK ITEM ITEM g E a a i 2 F if 0 z E 8 8 I4 8 d 0 Check microwave cooking 0 0 I I I I Check microwave cooking 0 c 0 0 1 5 0 c MIX I 0 I 1 MlY 5 nfil nn o4 I lel 1 1 i 16 1 11 ILI 7 T 0 D l l 17 0 0 CONV 8 BROIL 0 2 19 CLEAR i0 SLOW c 17 CLEAR 0 0 0 l 5 0 c 0 l 0 T 0 D l l C...

Page 87: ...8 2 I 1 I I I I t I 1 lej 1 1 jel SENSOR KEY AND REG CHECKER SWITCH OPERATION CHECK ITEM DISPLAY W 9 L TIMER T 0 D 1 l l l le le l I Cl EAR 0 I I 3 0 0 3 I 0 3 1 I I I l 2 e t l t l l rl l M w l Timer function is operated on relation to stop switch 0 1 T 0 D STOP SWITCH ON Check memory bank MEMORY RECALL 00 0 5 MIX MEM I I I I I I I I I I I I I I II BLANK 4 0 c MIX MEM I 1 l 1 I IelI l l l t t l l...

Page 88: ...he control unit by fingers to check if the soldering is poor 3 Check other connectors for poor soldering 1 g8 8g does not flash A Check converter circuit B Check fl circuit 2 All keys fail to transmit input 3 Special matrix group keys fail to transmit input 4 Cook does not start C Check damper circuit 5 Shut off relay RYI RYq cook relay or heater relay does not operate 6 Buzzer does not sound 7 Fa...

Page 89: ...scent display At the time don t No Opened filament 3 Replace Flourescend Display A apply excessive glass tube root force to pin terminal Test Pin No Defective p circuit Yes l See B Check 3 circuit Page 90 No Check and replace A 203 c No Defective LSI l 2 CF70 To page 89 ...

Page 90: ... T2 l See Table 1 Yes Is C5 faulty or Correct soldering Replace C5 No Is ZDl or ZD2 shot t circuited Replace l ZDl ZD2 Replace C8 l Cl0 Cll No Are resistances across l See Table 2 Table 1 Terminal 1 z Replace Ql 1 3 6 2 1 89 ...

Page 91: ...oor soldering of R42 R45 R46 and R48 Yes 1 No l Defective 041 applied to Q42 base l Poor soldering of R43 and R47 t Yes w l Defective Q42 l Poor R44 soldering 2 ALL KEYS FAIL TO TRANSMIT INPUT No 3 Correct soldering No Yes w No l Defective l Connector H 0 2 pin wire connector l stop switch 90 ...

Page 92: ... R115 group keys l C l 0 0 l R105 l RlO l R109 l RllO l R l l l l R112 Parts related l R115 R115 l R115 l R115 l R115 l R115 to horizonta Cl00 l C l 0 0 l Cl00 l c1oo Cl00 Cl00 group keys 4 Pin Nos BROIL MED MED LOW related to DEFROST COOK HIGH MED HIGH CLEAR l RlOO each keys 7 ll 6 11 5 ll 4 ll 3 11 2 11 1 ll Pin Nos related to I E I I I l R 1 0 1 each keys 7 10 6 10 5 10 4 lO 3 10 2 10 1 lO Pin ...

Page 93: ...s _ l Damper circuit l Damper motor l Shut off relay RY4 No 0 See C Check Damper circuit Next page No No motor rotate when cooking is started No Defective 9 shut off relay RY 2 Yes I No I No Defective LSI I 1 Yes D3 and 05 oppened or Replace D3 and D5 or correct soldering 92 ...

Page 94: ...heck damper switch or poor contact of damper switch connector Check and replace damper motor Is normal voltage applied to each relay coil Yes Defective Relay No to each relay in parallel Yes Replace Diode IYes Replace D3 and D5 or correct soldering 93 ...

Page 95: ...m 2 5KHz applied across pin No 1 and 5 of relay unit connector DI Yes No No Is normal waveform 2 5KHzI applied across pin No 42 D 1 of LSI l 2 and GND Yes Replace Buzzer St 1 1 l Defective 050 0 Wrong constant of R51 R52 R53 l Poor soldering 94 ...

Page 96: ...egments of all degits A Fluorescent Display Poor soldering No Yes No Are all segments of Yes Is digit signal of Yes No specific digit not lit up Yes Defective l Fluorescent Display 0 LSI l 2 9 FAULTY CONVECTION OPERATION 2 Replace Thermistor if To page 96 95 ...

Page 97: ...From page 95 No _ l Defective ZD30 l Poor soldering I Yes No l Defective VR30 VR31 l Poor soldering l Wrong constant of R31 R32 R33 R34 R35 Adjustment 96 ...

Page 98: ...43C L C 4 Turn on the power Main switch ON and stop switch ON 5 Touch CONVECTION 250 C and COOK pads Then the temperature will be displayed 6 Rotate the volume VR30 until the indication turns to 43C z z 2 o C 7 Set the rotary switch of checker to 147C f 2C If 147C k2C is not indicated rotate the volume VR31 until the indication turns to 147C 2C 8 Make sure to indicated LO C when set the rotary swi...

Page 99: ...h door or microwave generating and transmission switches assembly 2 Check visually the door seal for arcing and damage B Do not operate the oven until after repair if any of the following conditions exist 1 Door does not close firmly against the front of appliance 6 There is any other visible damage to the oven C Do not operate the oven 1 Without the RF gasket 2 If the waveguide and oven cavity ar...

Page 100: ...e 2 Discharge the high voltage capacitor 3 Disconnect the wire leads from the power transformer 4 Disconnect the filament leads from the magnetron and high voltage capacitor 5 Remove the two 2 screws holding the transformer to the base cabinet A 6 Remove the transformer RELAY UNIT CQOK RELAY OR HEATER RELAY REMOVAL 1 Disconnect the oven from power supply and remove the outer case Relay Unit 2 Disc...

Page 101: ...TRON BE SURE THE R F GASKET IS IN PLACE AND THE MAGNETRON MOUNTING NUTS ARE TIGHTENED SECURELY COOLING FAN MOTOR REMOVAL 1 Disconnect the oven from the power supply and remove the outer case 2 Discharge the high voltage capacitor 3 Disconnect the wire leads from the cooling fan motor 4 Release the wire leads from surround the cooling duct A 5 Remove the four 4 screws holding the chassis support to...

Page 102: ...A TURNTABLE COUPeG ASSEMBLY I C O N V E C T I O N F A N MOTOR SPACER TURNTABLE MOTOR MOUNTING BRACKET CONVECTION FAN BEI HEATING ELEMENT T UPPER PLATE 8 I SECONDARY Ih SWITCH I T A CD TURNTABLE MOTOR I FL7 THERMAL PROTECTION PLATE C Figure 30 Oven Cavity Components 101 ...

Page 103: ... ANGLE SECTION AN fMENT MAGNETRON ASSEMBLY 4 i l ha UPPER LATkH I MAGNETRON THERM0 CUT OUT COOLING a D UC T B _ CHASSIS SUPPO I MAGNETRON COOLING DUCT A RT I PRIMARY INTERLOCK SWITCH SECONDARY INTERLOCK SWITCH H HOOK Cavity Components Part I 102 ...

Page 104: ...OVEN OVEN LAMk SOCKET OVEN LAMP SCREEN GLASS THERMAL PROTECTION PLATE A STEAM DUCT E STEAM DUCT D STEAM DUCT Cl 6 o 1 IT L Figure 31 Oven Cavity C 103 ...

Page 105: ...AIR GUIDE DUCT B m D 4 T B 1 THERMAL PROTECTION PLATE D re 31 Oven Cavity Components Part II 104 ...

Page 106: ...flange Figure 32 Re installing for Damper Motor Assembly HEATING ELEMENT OR CONVECTION FAN REMOVAL 1 Disconnect the oven from the power supply and remove the outer case 2 Discharge the high voltage capacitor 3 Remove the cooling fan motor assembly and convec tion motor assembly refer to Cooling Fan Motor Removal and Convection Motor Removal 4 Disconnect the wire leads from the heating element and ...

Page 107: ...mbly and component removal 7 To remove the individual switch from the upper latch 4 Disconnect the wire leads from the switches hook push outward the two 2 retaining tabs holding the switch in place the switch in place LOWER LATCH SWITCH REMOVAL 1 Disconnect the oven from the power supply and remove 5 Remove the lower latch hook from the flange by mov the outer case ing it downward 2 Discharge the...

Page 108: ... firmly 4 Now make sure the upper latch switch operation If the upper latch switch has not activated with the door closed loosen the single 1 screw holding the upper latch hook to the oven cavity front flange and adjust the upper latch hook position After the adjustment make sure of the following points 1 The in and out play of the door remains less than 0 5mm at latched position First check the u...

Page 109: ...ew holding the control panel to the oven cavity front flange 7 Pull the control panel forward Replacement of individual component is as follows CONTROL UNIT AND KEY UNIT 1 Disconnect the 2 pin connector from the control unit 2 Take off the 1 l pin connector of key unit from the control unit 3 Remove the seven 7 screws holding the control panel and key unit angle to the back plate 4 Separate the ba...

Page 110: ...ORESCENT DISPLAY lISPLAY FILTER V KEY 0 1 l PIN y i CONNECTOR STOP SW I TCH OPEN DEVICE ASSEMBLY OPEN BUTTON CONNECTOR CONTROL PANEL BACK PLATE UNIT ANGLE 2 PIN 5 PiN CONNECTOR WIRE CONNECTOR Figure 34 Control Panel and Components 109 ...

Page 111: ...oor replacement the following adjustment criteria are taken Door is adjusted to meet the following three conditions before tightening the hinge screws 1 Adjust door latch heads at a position where they smoothly catch the latch hooks through the latch holes Refer to upper and lower latch switches adjustment 2 Deviation of the door alignment from the horizontal line of cavity face to be less than 1 ...

Page 112: ...s must be used for testing Recommended instruments are NARDA 8100 NARDA 8200 HOLADAY HI 1500 SIMPSON 380M 2 Place the turntable tray into the oven cavity 3 Place the load of 275 f 15ml of water with the addition of one I percent by weight of sodium chloride in solu tion initialy at 20 f 5 C in the centre of the oven tray The water container should be a low form of 600ml beaker with inside diameter...

Page 113: ...CTIONAL AREA OF 0 75mm2 NO INDICATION SHOWS 0 5mmz 0 QUICK CONNECT TERMINAL SOLDER OR CLINCH TERMINAL q CONNECTOR 3 WHTll8 22OV 50Hz G BLU118 f BRNIIS NHT118 RED t c E TPOARSI 3 l L L OVEN LAMP yA yp g OR I SW STOP SWITCH x d II L t 3E SW GRY I I I 118 CAPACITOR D RECTIFIER F FUSE MlOA RED 18 RED118 SW LOWER LATCH SWITCH 3RGl18 TC MAGNETRON THERM0 CUT OUT IRGl18 Figure 37 Schematic Diagram Austral...

Page 114: ...COM THERMISTOR MONITOR z SWITCH _ NC It I L CONTROL UNIT 0 CONTROL PANEL ASS Y Figure 38 Pictorial Diagram Australia Model 113 ...

Page 115: ...ON CONVECTION MOTOR MOTOR DAMPER MOTOR DAMPER MOTOR i I 1 RED _ CJ MAGNETRON 1 4 ml L j j FAN MOTOR MAGNETRON THERM0 CUT OUT J nTURNTABLE MOTOR RECTIFIER TRANSFORMER HIGH VOLTAGE CAPACITOR L Diagram 1Model 114 ...

Page 116: ...lol Ii THERMISTOR T 1 CONTROL UNIT 0 0 0 0 0 0 0 r RY 1 El RY 4 I l R 0 w G I CONTROL PANEL ASS Y Figure 39 Pictorial Diagram Aouth Africa Model 115 ...

Page 117: ...R DAMPER MOTOR f3 MAGNETRON 1 4 MAGNETRON THERM0 CUT OUT FAN MOTOR RED R LINE BYPASS CAPACITOR nTURNTABLE MOTOR i t l Y w 44 y RED I ri I 1 P q POW TRANSFORMER RECTIFIER 11 ml ER HIGH CAPACITOR iagram aModel 116 ...

Page 118: ...WS 0 5mmz 0 QUICK CONNECT TERMINAL SOLDER OR CLINCH TERMINAL 0 CONNECTOR WH r l8 WHT Ll L2 OVEN LAMP SW MONITOR SWITCH RED I RED I18 M TURNTABLE MOTOR GRY o Gb f BRN 8 I I I ORG Iv STOP SWITCH f hf c L HEATEkfhL COOK RELAY RELAY BLI I I M CONVECTION MOTOR I I I I 240V 50Hz I F FUSE MlOA RED l8 SW LOWER LATCH SWITCH 3RGI18 NK TC 1T POWER TRANSFORMER CAPACITOR T I 1 MG MAGNETRON Figure 40 Schematic ...

Page 119: ...PRINTED WIRING BOARD CONTROL UNIT P M 0 3 12 1 I To 12 n 118 ...

Page 120: ...R IOAMPERI t t H i I B 1 11 1 9 j 1 7 1 5 3 El K E 333 13 I D3l 06 93 14 ATER CtRCUlTt ___ i i j 1 1 T IIF 8 r l I I I r I F6c l i R1 31 DD I EC 060 2SC2021 1 I U ER CIRCU TXI i j J I 68K IL I I I CONTROL PANEL AND RELAY LOW1 1 _ _ IHIGHI VP I i THERMISTOR DAMPER SWITCH STOP SWITCH I w LEVEL DAMPER OPEN Figure 41 Control Panel and Relay Unit Circuit 119 ...

Page 121: ...IEL AND RELAY UNIT CIRCUIT i iiiitiii r 1 I I I I I I t L J Cl00 3300 x 7 H Z J STOP SWTCH 120 ...

Page 122: ...PRINTED WIRING BOARD RELAY UNIT t 121 ...

Page 123: ...PACKING AND ACCESSORIES PACKING ADD KIT CPADB0169WRKO TRAY HOLDER DOOR PROTECTION SHEET ISPAQPQOO7YBPOJ TRAY PACKING FOAM tSPADP0235r I I 122 ...

Page 124: ...et 2 AH 1 16 QACCA0018WREO Mains supply cord Aus ralia 1 AS FACC 0 0 19WRK 0 Mains supply cord South Africa 1 AX 1 17 R R L Y O 1 0 9WR E 0 Cook relay and heater relay 2 AP 1 18 RH ET O 0 4 5WR E 0 Heating element 240V 1 BA RH ET O 0 4 4WR E 0 Heating element 220V 1 BA 1 19 F H H Z 0 0 18 WR E 0 Thermistor 1 4 l 20 QSW MO 1 1 1WR E 0 Damper switch 1 AK 1 21 RMaTD0061WREO Damper motor 1 AW l 22 F P...

Page 125: ...EO MSPRT0082WREO P S P A 0 0 9 3 W R F O Relay RYl RY3 RY4 Relay RY2 Buzzer SPl Transistor 420 Varister VRSl Noise filter 22pH Ll Diode ERB1201 DZ 6 Diode lS2473 D20 25 Capacitor 2200 u F 35v c2 C a p a c i t o r 0 047pF 5 o v Cl4 Resistor 1 4w 8 2Ka R21 Resistor 1 4w 6 8KQ R22 Resistor 1 4w 56KQ R 4 0 Resistor 1 4w 1 8Kfi R 6 2 Line bypass capacitor South Africa only I 3 1 1 1 1 1 5 6 1 1 1 1 1 1...

Page 126: ... MZ033YAZZ Volume 1OKn R V R M 2 0 3 4 Y A Z Z Volume 4 7Ka RH iX21077AZZ LS I M58841 024SP R H i X 2 0 7 5 Y A Z Z LS I H D38755A50 R H i X O l 6 4 P A Z Z VS ZSA7 4 8 Q 1 IC lR2403 Transistor 2SA748 VS2SA733 Q l Transistor 2SA733 vs2sc2021 1 Transistor 2SC2021 VHDlODFZ 1 Diode lODF2 VHDlS2473 1 Diode lS2473 HDlS2075K 1 Diode lS2075K qHEHZ7B3 1A Zener diode HZ7B3 dHEXZ 10 O l Zener diode XZ 100 1...

Page 127: ...V C 7 2 3 1BO VCCSPRlH6121J C a p a c i t o r 12OpF 5 0 V C80 C 8 1 3 1B P VCSACUlEE475M C a p a c i t o r 4 7 uF 25V C82 3 1BQ VCQYBUlHW684J C a p a c i t o r 0 68 fF 50V Cl32 3 1 B R RMPT E 2 0 0 7 Y AZ Z C a p a c i t o r 33OpFX 7 aray Cl00 3 1BS VRD STZEF272J R e s i s t o r 2 7Ka 1 4W Rl 3 1B T VRD STZEF 150 J Resistor 150 1 4W R2 3 1B U VRD STZEF332 J R e s i s t o r 3 3KQ 1 4W R 3 R 4 R90 3...

Page 128: ...VZ0697WREO Z pin connector 3 7 J B T N 0 0 7 1 W R V C Open button 3 8 LANGT0290WRWO Key unit angle 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 12 4 12 A 4 13 4 14 OVEN PARTS 1 2 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 f G VN 0 l 6 8WR L O Oven cavity 1 F RGLMO 0 0 1 Y BY 0 Turntable roller assembly 3 FCP L O 0 2 4WR K 0 Turntable coupling assembly 1 FTNT 0 0 19WRgA RhrTI ml WI GC Turntable tray 1...

Page 129: ...WO LANGQ0260WREO Upper latch hook Monitor switch lever Aust talia only Lower latch hook Air guide cushion Steam ducf A Steam duct B Steam duct C Steam duct 0 Steam duct E Air guide duct A Air guide duct B Thermal protection plate A Thermal protection plate B Thermal protection plate 0 Thermal protection plate D Thermal protection plate E Thermal protection cover Thermal protection sheet A Thermal ...

Page 130: ...ead 1 AC LSTPP0036WRFO Lower latch head 1 AC MSPRTO 0 5 9WREO Latch spring 1 AC PCGVPO 2 3 8WR FA Latch cover 1 AM LX B Z 0 14 3 WR E 0 Screw tom latch cover mtg 3 AA MISCELLANEOUS 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 QW HZ 0 0 5 9WR E 0 High A voltage wire QW HZ0 0 6 OWR E 0 High voltage wire B QW V Z 0 6 6 OWR E 0 Fuse wire QW VZO641WREO Earth wire FW VZ 0 4 9 8WR E 0 Main wire harne...

Page 131: ... AA insulator mtg X B S SD4 0 P 1 2 0 0 0 Serew hinge mounting plate mtg 4 AA XBTU F 4 0 P 0 8 0 0 0 Screw convection air A g u i d e m t g 6 AA XBTUW40P08000 S c r e w shaft mounting plate A oven lamp socket 15 AA mounting plate convection air gulde B turntable motor mounting plate and damper angle mtg X BTUW4 0 P 1 0 0 0 0 Screw heating element mtg 2 AA XCPSD30P08XOO S c r e w cook relay heater ...

Page 132: ...XWH SD 5 O O 8 0 0 0 Washer door swing stop lever mtg 1 AA XWH SD 8 O l 2 0 0 0 Washer door swing stop lever mtg 1 AA XWHUW3 O O 5 0 0 0 Washer heating element holder and heating element 4 AA insulator mtg XWSSD4 O l 0 0 0 0 Washer earth wire mtg 1 AA XWWSD6 O O 8 0 0 0 W a s h e r t r a n s f o r m e r m t g power 1 AA XPNSC8 o 0 0 0 Pin convection fan and pulley A mtg 2 AA XPNSDG O O 0 0 Pin pul...

Page 133: ...CABINET PARTS 0 7 2 132 ...

Page 134: ...0 4 4 0 4 l 133 ...

Page 135: ...134 ...

Page 136: ...OVEN PARTS II I k5 rI f 135 ...

Page 137: ...136 ...

Page 138: ...CONTROL PANEL PARTS 3 3 P 0 0 J I I f I I I I II II I 3 l 0P 0 7 i J a 81 J Y0 3 5 137 ...

Page 139: ...DOOR ASSEMBLY I MISCELLANEOUS Tra Capa Mag 138 ...

Page 140: ... be fixed correctly and firmly Content 1 The cord anchorage which is used to secure the mains supply cord can be fixed in two different ways 2 If you fix them as shown in Figure 2 the mains supply cord will not be secured firmly 3 Therefore make sure to fix them as shown in figure 1 MAINS SUPPLY CORD 5mm CORD ANCHORAGE UPPER LSTPPOOO8YBFO 3 I rrwua I rst v X XIFfE KHORAGE Figure 1 Correct Fixing F...

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Summary of Contents for R-8320E

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Sharp R-8320E, Service Manual, Page: 76 / 140

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Summary of Contents for R-8320E

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