Sharp R-211(W)M Bedienungsanleitung

211M -

S1892R211M///

SHARP CORPORATION

SERVICE MANUAL

TABLE OF CONTENTS Page

SERVICING ...................................................................................................................................... 2

CAUTION, MICROWAVE RADIATION............................................................................................. 3

WARNING......................................................................................................................................... 3

PRODUCT DESCRIPTION............................................................................................................... 3

OPERATING SEQUENCE................................................................................................................ 4

DOOR SWITCHES ........................................................................................................................... 4

OUTPUT POWER TEST PROCEDURE........................................................................................... 5

TEST PROCEDURES....................................................................................................................... 6

DIGITAL ANALOGUE CONTROL PANEL ASSEMBLY ................................................................... 8

COMPONENT REPLACEMENT....................................................................................................... 12

SCHEMATIC DIAGRAM ................................................................................................................... 13

WIRING DIAGRAM ........................................................................................................................... 14

PARTS LIST...................................................................................................................................... 17

EXPLODED ILLUSTRATION............................................................................................................ 20

MICROWAVE OVEN

MODEL

R-211(W)/(BL)M

R-211(G)M

R-211(B)M

In the interests of user-safety the oven should be restored

to its original condition and only parts identical to those

specified should be used.

R-211

145

ILLUMINATED

TIMER

COOKING CONTROL

WITH COOK & DEFROST GUIDE

0.7

1.0

(KG)

2.0

211M -

Microwave ovens should not be used without a load. To test for the presence of microwave energy within a cavity,

place a cup of cold water on the oven turntable, close the door and set the microwave timer for one (1) minute, set the

powerleveltoHIGH(100%)andpushthestartkey.Whentheone(1)minutehaselapsed(timeratzero)carefullycheck

that the water is now hot.

AFTER REPAIR REMEMBER TO CHECK 4R

1) Reconnect all leads removed from components during testing.

2) Replace the outer case (cabinet).

3) Reconnect the supply.

4) Run the oven. Check all functions.

When all service work is completed, and the oven is fully assembled, the microwave power output should be checked

and microwave leakage test carried out.

IMPORTANT: If the oven becomes inoperative because of a blown fuse F8A in the 1st latch switch - monitor switch

circuit, check the 1st latch switch and monitor switch before replacing the fuse F1.

Sharp recommend that wherever possible, fault-finding is carried out with the supply disconnected. In some

cases, it may be necessary to connect the supply with the cover removed to carry out fault investigation in the

control circuitry. In such cases, the high voltage circuit should be disabled as described below to reduce the

hazards:-

• Carry out 3D checks (see above).

• Disconnect the supply leads from the high voltage transformer, making a note of the polarity. Insulate the

connectors, ensuring they are positioned away from the transformer and fastened there.

• Connect any relevant test equipment e.g. voltmeter.

• Reconnect the oven to the supply, then close the door.

• Note the results of the test, taking care to keep clear of the operational oven.

• Carry out 3D checks (see above).

• Reconnect the leads to the transformer. Take care to observe correct polarity.

• Carry out 4R checks (see below).

WARNING TO SERVICE PERSONNEL

SERVICING

Microwaveovenscontaincircuitrycapableofproducingveryhighvoltageandcurrent.Contactwithfollowingparts

will result in electrocution:-

High voltage capacitor, High voltage transformer, Magnetron, High voltage rectifier, High voltage harness.

REMEMBER TO CHECK 3D

1) Disconnect the supply.

2) Door opened, and wedged open.

3) Discharge high voltage capacitor.

WARNING AGAINST THE CHARGE OF THE HIGH-VOLTAGE CAPACITOR

The high-voltage capacitor remains charged about 60 seconds after the oven has been switched off. Wait for 60

seconds and then short-circuit the connection of the high-voltage capacitor (that is, of the connecting lead of the

high-voltage rectifier) against the chassis using a screwdriver with an insulated handle.

211M -

WARNING

Servicing and repair work must be carried out only by

trained service engineers.

The parts marked '*' on the parts list and schematic

diagram have voltages in excess of 250V.

Removal of the outer wrap gives access to potential

above 250V.

All the parts marked "∆" on the parts list may cause

undue microwave exposure, by themselves, or when

they are damaged, loosened or removed.

CAUTION

MICROWAVE RADIATION

Do not become exposed to radiation from the

magnetron or other parts conducting microwave en-

ergy. All input and output microwave connections,

waveguides, flanges and gaskets must be secured.

Never operate the device without a microwave en-

ergy absorbing load attached. Never look into an

openwaveguideorantennawhilethedeviceisener-

gized.

SPECIFICATION

Power Requirements 230-240 Volts 50 Hertz Single phase, 3 wire grounded

Power Consumption 1.24kW

Power Output 800 watts nominal of RF microwave energy (measured by way of IEC 705)

Operating frequency of 2450 MHz

Case Dimensions Width 449 mm Height 282 mm including foot Depth 369 mm

Cooking Cavity Dimensions Width 290 mm Height 194 mm Depth 313 mm

Turntable diameter 272 mm

Control Complement DIGI/ANA

Microwave Power for Variable Cooking

Repetition Rate :

HIGH .................... Full power throughout the cooking time

MEDIUM HIGH..... approx. 70% of Full Power

MEDIUM............... approx. 50% of Full Power

MEDIUM LOW ..... approx. 30% of Full Power

LOW ..................... approx. 10% of Full Power

Set Weight Approx. 13.3 kg

PRODUCT DESCRIPTION

WARNING

THIS APPLIANCE MUST BE EARTHED. THE WIRES IN THIS MAINS LEAD ARE COLOURED IN

ACCORDANCE WITH THE FOLLOWING CODE:

GREEN-AND-YELLOW : EARTH BLUE : NEUTRAL BROWN : LIVE

If the mains lead is replaced, only part number QACCBA030WRE2 should be used

CAUTION / WARNING

211M -

OFF CONDITION

Closingthedooractivatesalldoorinterlockswitches(moni-

tored latch switch and latch switch).

IMPORTANT

When the timer knob is at "0" the oven is in the OFF

condition.

Approx. 10% = 80 Watts

26 sec. ON

4 sec. ON

8 sec. ON

14 sec. ON

20 sec. ON

22 sec. OFF

18 sec. OFF

12 sec. OFF

6 sec. OFF

LOW

MEDIUM HIGH

MEDIUM

MEDIUM LOW

HIGH

Approx. 70% = 560 Watts

Approx. 50% = 400 Watts

Approx. 30% = 240 Watts

Approx. 100% = 800 Watts

HIGH, MEDIUM HIGH, MEDIUM, MEDIUM

LOW, LOW COOKING

When the microwave oven is preset for variable cooking

power,thelinevoltageissuppliedtothepowertransformer

intermittently within a 26-second time base through the

relaycontactwhichiscoupledwiththecurrent-limitingrelay

(RY2). The following levels of microwave power are given.

SETTING

NOTE: TheON/OFFtimeratiodoesnotexactlycorrespond

to the percentage of microwave power, because

approx. 3 seconds are needed for heating up the

magnetron filament.

DOOR OPEN MECHANISM

Figure D-1. Door Open Mechanism

MONITORED LATCH SWITCH (SW1)

STOP SWITCH (SW3)

1. Whentheovendoorisclosed,thecontacts(COM-NO)

must be closed.

2. When the oven door is opened, the contacts (COM -

NO) must be opened.

MONITOR SWITCH (SW2)

1. Whentheovendoorisclosed,thecontacts(COM-NC)

must be opened.

2. When the oven door is opened, the contacts (COM -

NC) must be closed.

3. Iftheovendoorisopenedandthecontacts(COM-NO)

ofthemonitoredlatchswitch(SW1)failtoopen,thefuse

F8A blows simultaneously with closing the contacts

(COM - NC) of the monitor switch (SW2).

CAUTION: BEFORE REPLACING A BLOWN FUSE (F1)

TEST THE MONITORED LATCH SWITCH

(SW1), + MONITOR SWITCH (SW2) FOR

PROPER OPERATION.

OPERATING SEQUENCE

DOOR SWITCHES

LATCH HOOK

SW3: STOP SWITCH

SW1: MONITORED

LATCH SWITCH

SW2: MONITOR

SWITCH

LATCH

HEADS

OPEN LEVER

DOOR OPEN BUTTON

DOOR

211M -

MICROWAVE OUTPUT POWER (IEC-705)

The power output of this oven is rated using the method specified by IEC-705. Full details of how to carry out this

procedure can be found in the Sharp Technical Training notes which is available from Sharp Parts Centre

(part number SERV-LITMW01).

Using this procedure, the heating time to raise 1000g of water by 10°C is approximately 50 seconds.

The IEC-705 procedure must be carried out using laboratory-type procedures and equipment. These requirements

make the procedure unsuitable for routing performance checks. An indication of the power being produced by the oven

can however be obtained using the procedure given below.

Alternative simplified method:

1. Place 2 litres of cold water (between 12°C and 20°C) in a suitable container.

2. Stir the water and measure the temperature in °C. Note temperature as T1.

3. Place the container in the microwave and heat the water for 2 minutes on full power.

4. When the 2 minutes is completed, remove the container and stir the water. Note the water temperature as T2.

5. Calculate the output power using the following formula:

R.F. Power Output = (T2 - T1) x 70.

Note: The result from this test should be within 10% of the power rating stated on the rating label.

MICROWAVE LEAKAGE TEST

This oven should be tested for microwave leakage on completion of any repair or adjustment, following the procedure

described in the Sharp Technical Training notes (part number SERV-LITMW01). The maximum leakage permitted in

BS EN 60335-2-25 is 50W/m2 (equivalent to 5mW/cm2), however it is not normal to detect any significant leakage,

therefore, any leakage which is detected should be investigated.

It is essential that only leakage detectors with current calibration traceable to the National Physical Laboratories are used.

Suitable leakage detectors : CELTEC A100

APOLLO X1

OUTPUT POWER TEST PROCEDURE

211M -

TEST PROCEDURES

COMPONENT TEST

CONTROL PANEL ASSEMBLY TEST

The control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike conventional

microwave ovens, proper maintenance can not be performed with only a voltmeter and ohmmeter.

In this service manual, troubleshooting by replacement is described according to the symptoms indicated.

1. Control Panel

The following symptoms indicate a defective control unit.

1-1 In connection with LEDs

a) At a certain LED, all or some LEDs do not light up.

b) At a certain LED, brightness is low.

c) Only one LED does not light up.

d) All or some LEDs continue to light up.

e) A certain group of LEDs do not light up.

f) The LEDs flicker.

1-2 Other possible troubles caused by defective control unit.

a) Buzzer does not sound or continues to sound.

b) Cooking is not possible.

c) Cooking time can not be set.

d) Power level can not be set.

RELAY TEST

CARRY OUT 3D CHECKS.

Remove the outer case and check voltage between Pin Nos. 3 and 5 of the 3 pin connector (A) on the control unit with an

A.C. voltmeter.

The meter should indicate 230-240 volts, if not check oven circuit.

Relay Test

Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation. convection cooking operation

or grill operation.

DC. voltage indicated.............Defective relay.

DC. voltage not indicated.......Checkdiodewhich isconnectedto the relaycoil.If diodeisgood, controlunitisdefective.

RELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTS

RY1 Approx. 12.0V D.C. Oven lamp / Turntable motor / Fan motor

RY2 Approx. 12.0V D.C. High voltage transformer

CARRY OUT 4R CHECKS.

211M -

TEST PROCEDURES

COMPONENT TEST

PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD (PWB) IS OPEN.

To protect the electronic circuits, this model is provided with a fine foil pattern added to the input circuit on the PWB, this foil

pattern acts as a fuse. If the foil pattern is open, follow the troubleshooting guide given below for repair.

Problem: POWER ON, indicator does not light up.

CARRY OUT 3D CHECKS.

STEPS OCCURRENCE CAUSE OR CORRECTION

1 The rated AC voltage is not present at Check supply voltage and oven power cord.

Power terminal of CPU connector (CN-A).

2 The rated AC voltage is present at primary Low voltage transformer or secondary circuit defective.

side of low voltage transformer. Check and repair.

3 Only pattern at "a" is broken. *Insert jumper wire J1 and solder.

(CARRY OUT 3D CHECKS BEFORE REPAIR)

4 Pattern at "a" and "b" are broken. *Insert the coil RCILF2003YAZZ between "c" and "d".

(CARRY OUT 3D CHECKS BEFORE REPAIR)

NOTE: *At the time of these repairs, make a

visual inspection of the varistor for burn-

ingdamageandexaminethetransformer

withtester forthepresence oflayershort

circuit (check primary coil resistance).

If any abnormal condition is detected,

replace the defective parts.

CARRY OUT 4R CHECKS.

(J1)

VRS1

CN - A

211M -

DIGITAL ANALOGUE CONTROL PANEL

Control Unit

Control unit consists of LSI, power source circuit, synchro-

nizing signal circuit, ACL circuit, buzzer circuit, encoder

circuit, indicator circuit and potentiometer circuit.

1) LSI

This LSI controls the encoder signal, potentiometer

signal, relay driving signal for oven function, buzzer

signal and LED signal.

2) Power Source Circuit

This circuit generates voltage necessary in the control

unit.

Symbol Voltage Application

VC -5.0V LSI(I-1)

VR -12.0V RELAY(RY1,2)

3) Synchronizing Signal Circuit

The power source synchronizing 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 commercial frequency.

4) ACL

A circuit to generate a signals which resets the LSI to

the initial state when power is supplied.

5) Buzzer Circuit

The buzzer is responsive to signals from the LSI to

emit audible sounds (key touch sound and

completion sound).

6) Door Sensing Switch (Stop Switch)

A switch to "tell" the LSI if the door is open or closed.

7) Relay Circuit

To drive the magnetron, heating element, fan motor,

turntable motor and light the oven lamp.

8) Encoder

The encoder generates the pulse signal, and the

pulse signal is sent to the LSI.

9) Indicator Circuit

Indicator elements are the Light-emitting diodes

(LD1-LD24).

10) Potentiometer Circuit

The circuit makes setting of the power level by

variable resistance.

OUTLINE OF CONTROL PANEL

211M -

1 RST IN Auto clear terminal.

Signal is input to reset the LSI to the initial state when power is applied.

Temporarily set to "L" level the moment power is applied, at this time the LSI is

reset. Thereafter set at "H" level.

2 INT IN Signal coming from encoder.

When the encoder is turned, the contacts of encoder make pulse signals. And

pulse signals are input into INT.

3 AVSS IN A/D converter power source voltage.

The power source voltage to drive the A/D converter in the LSI. Connected to

VC.

4 VREF IN Reference voltage input terminal.

A reference voltage is applied to the A/D converter in the LSI.

5K0INSignal coming from potentiometer.

ByinputtingDCvoltagecorrespondingtothepowerlevelsetbythepotentiometer,

thisinputisconvertedintothepowerlevelbytheA/DconverterbuiltintotheLSI.

6K1INTerminal to change functions according to the model.

Signalinaccordancewiththemodelinoperationisappliedtosetupitsfunction.

7 AVDD IN A/D converter power source voltage.

The power source voltage to drive the A/D converter in the LSI.

8 NC No connection terminal.

9 S0 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD19 - LD24).

10 S1 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD13 - LD18).

11 S2 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD7 - LD12).

12 S3 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD1 - LD6).

13-14 NC No connection terminal.

15 D0 OUT Segment data signal.

Signalisinput tothecathodesofthelight-emittingdiodes(LD1,LD7,LD13and

LD19).

16 D1 OUT Segment data signal.

Signalisinput tothecathodesofthelight-emittingdiodes(LD2,LD8,LD14and

LD20).

17 CNVS IN Reference voltage input terminal.

AreferencevoltageisappliedtotheA/DconverterintheLSI.ConnectedtoVC.

18 VSS IN Power source voltage: -5V.

The power source voltage to drive the LSI is input to VSS terminal. Connected

to VC.

19 D2 OUT Segment data signal.

Signalisinput tothecathodesofthelight-emittingdiodes(LD3,LD9,LD15and

LD21).

20 D3 OUT Segment data signal.

Signalisinputtothecathodesofthelight-emittingdiodes(LD4,LD10,LD16and

LD22).

21 D4 OUT Segment data signal.

Signalisinputtothecathodesofthelight-emittingdiodes(LD5,LD11,LD17and

LD23).

22 D5 OUT Segment data signal.

Signalisinputtothecathodesofthelight-emittingdiodes(LD6,LD12,LD18and

LD24).

DESCRIPTION OF LSI

LSI(IZA882DR)

The I/O signal of the LSI(IZA882DR) are detailed in the following table.

Pin No. Signal I/O Description

DIGITAL ANALOGUE CONTROL PANEL

211M -

Pin No. Signal I/O Description ON/OFFtimeratioinMicro

cooking

(a. 32second time base)

MICRO ON OFF

COOK

100% 32sec. 0sec.

70% 24sec. 8sec.

50% 18sec. 14sec.

30% 12sec. 20sec.

10% 6sec. 26sec.

23 D6 OUT Magnetron high-voltage circuit driving signal.

Toturnonandoffthecookrelay(RY2).

In 100% POWER operation, the sig-

nals hold "L" level during microwave

cooking and "H" level while not cook-

ing.Inothercookingmodes(70%,50%,

30%, 10%) the signal turns to "H" level

and "L" level in repetition according to

the power level.

24 D7 IN/OUT Terminal not used.

25 D8 OUT Oven lamp, turntable motor and fan motor driving signal(Square Wave-

form : 50Hz).

To turn on and off shut-off relay

(RY1). The square waveform

voltage is delivered to the relay

(RY1) driving circuit and

relay(RY2) control circuit.

26 NC No connection terminal.

27 F0 IN Inputsignalwhichcommunicatesthedooropen/closeinformationtoLSI.

Door closed; "H" level signal.

Door opened; "L" level signal.

28 F1 Terminal not used.

29 F2 IN Signal to synchronize LSI with commercial power source frequency.

This is basic timing for all real time

processing of LSI.

30 F3 IN Signal coming from encoder.

Signal similar to INT. Pulse signals are input into F3.

31-32 NC No connection terminal.

33 XOUT OUT Internal clock oscillation frequency control output.

Output to control oscillation input of XOUT.

34 XIN IN Internal clock oscillation frequency input setting.

The internal clock frequency is set by inserting the ceramic filter oscillation

circuit with respect to XIN terminal.

35 CNTR OUT Signal to sound buzzer.

A: key touch sound.

B: Completion sound.

36 VDD IN Power source voltage: 0V.

The power source voltage to drive the LSI is input to VDD terminal.

20 msec

During cooking

20 msec

H : GND

L (-5V)

BH: GND

L: -5V

0.12 sec

2.4 sec

DIGITAL ANALOGUE CONTROL PANEL

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Sharp Mikrowellenofen Handbücher

Sharp

Sharp RK-J32W Bedienungsanleitung

Sharp

Sharp Carousel R-930CS Bedienungsanleitung

Sharp

Sharp AX-1100 Bedienungsanleitung

Sharp

Sharp R-360 Bedienungsanleitung

Sharp

Sharp R-403HW Bedienungsanleitung

Sharp

Sharp SMC1162HS Bedienungsanleitung

Sharp

Sharp YC-PC254A Bedienungsanleitung

Sharp

Sharp R-G271VN-W Bedienungsanleitung

Sharp

Sharp R-770 Bedienungsanleitung

Sharp

Sharp Carousel R-398N Bedienungsanleitung

Sharp

Sharp R842SLM Bedienungsanleitung

Sharp

Sharp R-956W Bedienungsanleitung

Sharp

Sharp R-28A0(B) Bedienungsanleitung

Sharp

Sharp SMC1843CM Bedienungsanleitung

Sharp

Sharp R-383M Bedienungsanleitung

Sharp

Sharp R-657 Bedienungsanleitung

Sharp

Sharp R-26ST-A Bedienungsanleitung

Sharp

Sharp R-410FW Bedienungsanleitung

Sharp

Sharp R-937 Bedienungsanleitung

Sharp

Sharp R-895(AL)M Bedienungsanleitung

Sharp

Sharp R-323T Bedienungsanleitung

Sharp

Sharp YC-MS01E-S Bedienungsanleitung

Sharp

Sharp R-403KK Bedienungsanleitung

Sharp

Sharp R-34SI Bedienungsanleitung

Beliebte Mikrowellenofen Handbücher anderer Marken

Daewoo

Daewoo KOG-574R0S Bedienungsanleitung

LG MH7040SS Bedienungsanleitung

Dometic

Dometic DOTRM13W Bedienungsanleitung

Sanyo

Sanyo EM-X680 Bedienungsanleitung

KitchenAid

KitchenAid KMCX4510 Montageanleitung

Smeg

Smeg S45MCX1 Bedienungsanleitung

Russell Hobbs

Russell Hobbs RHM2044 Bedienungsanleitung

Sunbeam

Sunbeam SMW759 Bedienungsanleitung

Bosch

Bosch CEG732X.1B Bedienungsanleitung

Dometic

Dometic Roadmate 230 Bedienungsanleitung

Samsung

Samsung SJ0396W Bedienungsanleitung

Sanyo

Sanyo EM-P494WS Bedienungsanleitung

Electrolux

Electrolux EMS2840 Bedienungsanleitung

Daewoo

Daewoo KOC-984T2S13 Bedienungsanleitung

Impecca

Impecca CM07M2 Bedienungsanleitung

Sanyo

Sanyo EM-G5596V UK2 Bedienungsanleitung

Samsung

Samsung CE2927 Bedienungsanleitung

Cafe

Cafe CVM517P Bedienungsanleitung