Sharp R-9320, R-9450 Service Manual

SHARP SERVICE MANUAL

S8404R9320J//

MICROWAVE OVEN

R19320

MODELS R-9450

in the interests of user-safety the set shouid be restored to its originai

condition and only parts identical to those specified be used.

/

TABLE OF CONTENTS

\

page

FOREWORD

.......................................................................

..t

CAUTION, MICROWAVE RADIATION. ..................................................... .l

THUMB INDEX

.....................................................................

..l

PRODUCT DESCRIPTION

..............................................................

..Z

OPERATING INSTRUCTIONS.

.......................................................

.3 y 19

OPERATlON....................................................................20~2 7

SERVICING

.....................................................................

28-35 TOUCH CONTROLPANELASSEMBLY

.................................................

36 w 51

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURES .............................

52 h 60

MICROWAVE MEASUREMENT

..........................................................

.61

SCHEMATIC DIAGRAM (R-9320)

.......................................................

62

PICTORIAL DIAGRAM (R-9320)

......................................................

6364

CONTROL PANEL CIRCUIT (R-9320)

..................................................

6566

PRINTED WIRING BOARD ............................................................

67

SCHEMATIC DIAGRAM (R-9450)

.......................................................

68

PICTORIAL DIAGRAM (R-9450)

......................................................

69,70

CONTROL PANEL CIRCUIT (R-9450)

..................................................

71,72

PACKING AND ACCESSORIES ......................................................... 73

PARTS LIST

.................................................................

..74-8 4

SHARP CORPORATION

R-9320 R-945Q

SERVICE MANUAL

SHARP

R-9320/R-9450

FOREWORD

This Manual has been prepared to provide Sharp Service Personnel with complete Operation and Service Information for the Sharp Microwave Ovens, R-9320/ R-9450.

It is recommended that service personnei carefully study the entire text of this Manual so they will be qualified to render satisfactory customer service.

CAUTION

MICROWAVE RADIATION

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 is energized.

SHARP CORPORATION

OSAKA, JAPAN

R-9320 R-94!5C

PRODUCT DESCRIPTION

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INSTRUCTIONS

* SERVICING

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TOUCH CONTROL PANEL ASSEMBLY

*COMPONENT REPLACEMENT

AND ADJUSTMENT PROCEDURE-;

MICROWAVE MEASUREMENT

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PRODUCT DESCRIPTION

EXPLANATION OF MICROWAVE COOKING

The Sharp Microwave Oven uses microwave energy to Materials with a high moisture content, like most foods, produce heat

in the food to be cooked.

Unlike

will absorb microwave energy. As the microwave energy conventional ovens microwave energy will cook foods at a frequency of 2450 Megahertz enters the food, the without applying external heat.

molecules align themselves with the energy. Because the

microwaves are changing polarity every half cycle, the food Microwaves, which are short electromagnetic waves of

molecules are changing direction every half cycle or oscil-

RF (radio .frequency) energy, pass through materials

lating back and forth 4,900,000,000 times per second. This such as glass, paper,

china and most plastics. Materials high speed oscillation causes friction between the molesuch as metal and aluminum foil tend to reflect micro- cules, thereby converting the microwave energy to heat. waves and may be used only as recommended in the cook-

ing instructions.

SPECIFICATIONS

Power requirements

Power consumption

Microwave output power

Case dimensions

Width Height

Depth

Cooking cavity dimensions

Width

Height Depth

Turntable diameter

Control complement

Weight

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240V

50Hz Single phase, 3 wire earthed

1.3kW

650W (2 litre water load)

627mm 400mm 458mm

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1

395mm 260mm 422mm

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385mm

Start Pad, Stop Pad and Clear Pad

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Ciock (1:OO - 12:59) Minute Timer (0 - 99 minutes 99 seconds) Temperature Control: 30 - 93°C (R-9450 only)

1

Variable Cooking Mode Selector

/ /

Repetition Rate :

HIGH...........

Full power throughout the cooking time

MED HIGH.. . . ,

.24 sec. ON, 8 sec. OFF, approx. 70% of full power

I

MED . . . . . . . . . . . .

18 sec. ON, 14 sec. OFF, approx. 50% of full power

MED LOW DEFROST ” ” ’

. .12 sec. ON, 20 sec. OFF, approx. 30% of full power

LOW . . . . . . . . . . . . .6 sec. ON, 26 sec. OFF, approx. 10% of full power

I

Auto Start Cooking

/

Sensor Temp. Cooking

/

Approx. 28kg (R-93201 Approx. 29kg (R-9450)

-

R-9320 R-9450

OPERATING INSTRUCTIONS

..- _____

-.- _____ - --- _-- ~~~ -.

OPERATION OF AUTO-TOUCHTM CONTROL PANEL

___-----

-. -_ .___ _ ---_.____ _~---_---~ -. - -

This new Auto-Touch microwave oven uses a microprocessor, the electronic brain that provides the

wide variety of cooking programs which could not be achieved by conventional control methods. The operation of the oven is controlled by touching the appropriate pads arranged on the surface of the control panel. The lighted digital readout will display the cooking time, time of day or minute timer, etc.

Indicators show the variable cooking setting or cooking function you have programmed.

An entry signal tone should be heard each time you touch the control panel to make a correct entry.

If you do not hear this sound,

1) You have not used enough pressure in touching the pad,

2) You have made more entries than the control panel will accept,

3) You have made an incorrect entry.

In addition to the entry signal tone, an audible signal will sound

for approximately 2 seconds at the

end of the cooking cycle.

* You cannot program the oven if the door is not closed tightly.

* During cooking, the program cannot be changed until CLEAR pad is touched twice. All functions

are locked in to prevent accidental changes.

Auto-Toucti”Control Panel (R-9320)

p.__-__--___ --

compu defrost, auto start, cook and kg.

Shows readout of cooking time, compu defrost operation or time of day.

COMPU DEFROST PADS

Touch to select compu defrost setting.

NUMBERING PADS

Touch to enter cooking times, clock time or weights of food.

PROGRAM SELECTOR PADS

Touch to set clock, auto start or timer.

VARIABLE COOKING CONTROL PADS

. If not touched, HIGH is automatically selected.

en during cooking.

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Touch to erase during programming.

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-START PAD

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Touch to start oven.

LmeoIp

INSTANT COOK PAD

Touch to cook for 1 minute at HIGH or increase 1 minute at variable cooking

during cooking.

PUSH -0 OPFY 3ooFI

COMPU

DEFROST CHART

.-

Foods cooked with compu defrost settings.

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! Auto-Touch’“Contro1 Panel ,(R-9450)

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---‘““:::“,“, start, ,,,k a”d kg.

lndrcator lrghts for variable cooking, temp, sensor temp, compu

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COYU

YED LOW YE0 H&W

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LIGHTED DIGITAL DISPLAY

Shows readout of cooking time, temperature, sensor temp setting,

COOK

AUTO

rr

compu defrost operation or time of day.

~__~_

-,

OMPU

DEFROST PADS

Touch to select compu defrost settings.

SENSOR

TEMP PAD Touch to select Sensor Temp settings for fresh roasts, poultry or simmering, Inset-t temperature probe when indicated in display.

ROGRAM SELECTOR PADS

Touch to set clock, auto start, timer, or temperature.

NUMBERING PADS

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1 i

i 1

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ii

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-

Touch to enter cooking times, temperature settings, clock time sensor temp settings or weight of food.

VARIABLE COOKING CONTROL PADS

Touch to select power setting. If not touched, HIGH is auto-

matically selected.

Touch to stop operation of oven during cooking.

CLEAR PAD

Touch to erase during programming.

-INSTANT COOK PAD Touch to cook for 1 minute at HIGH or increase cooking time.

I I

PUbH TO OPEh DOOR

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COMPU DEFROST CHART

Foods cooked with compu defrost settings.

SENSOR TEMP CHART

Foods cooked with sensor temp settings.

--- __-- ____

_~-------~...-

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CLOCKSETTING

This oven functions as a clock to keep the time of day. To set the clock, follow this procedure. When oven is plugged in, the display will show [ss:83] and variable cooking indicators, flashing each second.

Touch the CLEAR pad; i::li-;‘z! will appear. After one minute the display will show

y---my .

* Suppose you want to enter the correct time of day 12:30 (A.M. or P.M.)

Procedure

/

Pad Order

Display

1

1. Touch the AUTO START/CLOCK pad.

AllToslwT :

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I

j 2. Enter the correct time of day by - 1

____-

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touching the numbers in sequence.

1 2 ~3 O:/

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3. Touch the AUTO START/CLOCK

pad again.

1 AuTosm?T /

i CLOCK i

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I

The clock is now set and will keep the time of day. If power to the unit is interrupted, the display will

intermittently show

1

j 88: 1’1381 and variable cooking indicators after the power is reinstated. To reset

the clock, touch the CLEAR pad and then repeat the steps above.

NOTE:

* This is a 12 hour clock. L

c RP,“R I will appear in the readout if you attempt to enter an in-

correct clock time.

Forexample, if you ateempt to enter 8:61 or 13:00, ,m and

incorrect clock time will appear repeatedly. To erase

ERR~/Wouch the CLEAR pad. If you accidently touch more than 4 number pads, the last 4 numbers you have touched will appear on the display.

MINUTE TIMER SETTING

This oven can be used as a timer for timing up to 99 minutes, 99 seconds. There is no cooking involved. + Suppose you want to time a 3 minute long distance phone call.

Procedure

Pad Order

Display

1. Enter desired time.

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-1

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2. Touch the TIME R pad.

j TIMER

The timer will begin counting down to zero. When the timer reaches zero, the signal will sound. The time of day will reappear on the display. To cancel the minute timer during operation,

simply touch

the CLEAR pad and the time of day will reappear.

R-g450 MICROWAVE COOKING

To Cook at HIGH

Many foods are cooked at HIGH (100%) for best results. The variabie cooking control allows you to select the rate of microwave cooking, but the oven will automatically operate at HIGH if no variable

cooking control pad is touched. If you wish to cook at HIGH, it is not necessary to touch the HIGH pad. For other variable cooking control levels, the desired setting must be entered.

+ Suppose you want to heat 2 cups of coffee for I minute 30 seconds at HIGH.

Procedure

Pad Order

j -____-

1. Enter desired cooking time.

I

1 3 0;

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The cooking time will count down to zero. When the timer reaches zero, the indicators will go out and an audible signal will sound, The time of day will reappear on the display. Microwave energy will stop.

I To Cook by Variable Cooking Control

There are five preset power ieveis.

’ . Approximate percentage of microwave power for each power level.

HIGH

(Full Power) 100%

MED HIGH

(Roast)

70%

MED

(Simmer)

50%

MED LOW/DEFROST

(Defrost)

30%

LOW

(Warm)

10%

Some foods give best results when cooked more slowiy at a lower cooking power. Your cookbook

indicates the recommended variable setting for each recipe. See your Sharp Carousei microwave cook-

book for guidelines on how to use the variable cooking contra!.

* Supoose you want to heat soup for 2 minutes 15 seconds at MED HIGH.

Procedure

Pad Order

Display /

1. Enter desired cooking time.

2 1 5 :

1 /q

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2. Select desired variable cooking control setting.

M. HIGc:

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I MEL

tiIGH

1 /

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3. Touch the START pad.

STAFiT

MEC HIGH

2 I II

COOk

The cooking timer 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 accidentally touch the wrong variablecooking control pad, immediately touch the

correct pad. The last pad touched will be the setting the oven accepts. For example, if you touch the MED HIGH pad and then immediately touch the MED pad, the oven will cook at MED.

Multiple Sequence Cooking I( R-9320)

This oven can be programmed for up to 3 automatic cooking sequences, switching from one

variable power setting to another automatically. Check the microwave recipe section of your Sharp Carousel Microwave Cookbook for ideas on when to use multiple sequence cooking.

+ Suppose you want to roast beef for 5 minutes at HIGH, and continue to cook for 30 minutes at

MED HIGH.

Procedure

Pad Order

Display

i

I

/ 1. Enter desired time for first cooking

I

5 0 0

/

I,-

1-i t-i

I

sequence.

____ ____ ip

-I

1-r i-1

/ 2. Select first variable cooking control

HIGH

j

HIGH

‘-7

l-l r-j

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setting.

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-1 9

l-1 1-f

1

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3. Enter desired time for second cooking sequence.

____~~- 1

;3 0 0 0

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i-1 I,/

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4. Select second variable cooking control setting.

VEC HIGH ~-

M.HIGH

!

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I

-I l-l . l-1 1-J

/----

5. Touch the START pad.

START

;y-

HIGH

C

I7 I7

/ COOK

-I *

l-1 1-1

The timer begins to count down when it reaches zero.

I zero.

/ 1 j

1

MED HIGH

1 I

i ’

,7 I7 /7/-l :

i/ -

-1 Cl l lJl-I I I

When the timer reaches zero, all indicator lights will go out and an audible signal will sound. The time of day will reappear on the display.

NOTE: If HIGH is selected as the final sequence, it is not necessary to touch the HIGH pad.

If HIGH is programmed as the first or second sequence, HIGH pad must be touched, even

though the HIGH indicator may already be lighted.

R-9320 R-945C

7

q-9320 ?-9450 ---p-----

Multiple Sequence Cooking (R-9450)

This oven can be programmed for up to 3 automatic cooking sequences, switching from one variable

power setting to another automatically. The oven can also switch from one temperature setting to another automatically, and it can maintain a specific temperature for up to 99 minutes. Some of the sequences you might use in cooking include, for example as below.

I

FIRST SEQUENCE /

SECOND SEQUENCE (

THIRD SEQUENCE

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f

j

Cook or Defrost by Time + Cook by Time

i

1

Cook or Defrost by Time + Cook by Time

Cook by Time

j Cook by Temperature

Maintain Temperature

1 Cook by Temperature

Cook by Temperature

Maintain Temperature

/ Cook by Temperature

Cook by Temperature

/ Cook or Defrost by Timer Cook by Temperature

Maintain Temperature

You are not limited to the above sequences, they are the most practical.

ex. 1) You can program the oven to defrost on MED LOW/DEFROST to cook on HIGH and then

to cook on MED.

ex. 2) The oven can also be programmed to heat to 80°C on MED HIGH (1 st temperature and variable

setting) followed by a iower temperature 60°C for 30 minutes). The food would heat to 60°C,

30 minutes would appear in the readout and count down to zero. Microwave power would come

on only if the food cooled below 60°C during this 30-minute period.

* Suppose you want to roast beef for 5 minutes at HIGH, and continue to cook for 30 minutes at

MED HIGH.

Procedure Pad Order

Display

1, Enter desired time for first cooking

sequence.

__-. --___

5 0 0

____

- ---.~

11

1-i i-i

-I

i-1 1-i

2. Select first variable cooking control setting.

HIGH

II-

i-i 17

-I *

i-1 /-I

3. Enter desired time for second

I

coo king sequence.

/

--__

3 0 0 0

____________-

3 17 i-i i-i

-IL1

1-I i-1

-

1 4. Select second variable cooking I

control setting.

I

M. HIGH

MED HIGH

1-i 1-i

-1 i-1 l 1-i i-i

5. Touch the START pad.

_---

START

______--

HIGH

11

17 r7

-I *

i-1 l-1

COOK

The timer beglns to count.

aown.

When

reaches

zero.

-

ME0 HIGH

17 i-i

-1 i-1 l l-1 l-1

COOK

When the timer reaches zero, all indicator lights will go out and an audible signal will sound. The time of day will reappear on the display.

NOTE:

If HIGH is selected as the final sequence, it is not necessary to touch the HIGH pad. If HIGH is programmed as the first or second sequence, HIGH pad must be touched, even

though the HIGH indicator may already be lighted,

8

OPERATION FOR INSTANT COOK‘”

The “Instant Cook” system allows YOU to cook for an extra minute at HIGH by simply touching the

“INSTANT COOK” pad. You can also extend cooking time in multiples of 1 minute by repeatedly

touching the “INSTANT COOK” pad during a cooking program.

* Suppose you want to cook 1 minute at HIGH easily.

Procedure

Pad Order Display ;

I

I /

1 Touch the INSTANT COOK pad.

I

HIGH

I

1 INSTANT COOK’

1

I

i-i 17 1 j

jCOOK

I l IJIJ /

The timer begins to count down.

When the timer reaches zero, all indicators will go out and an audibie signal will sound. The time of day will reappear on the display.

NOTE: The Instant Cook system can be only inputted within 1 minute after cooking or closing the

door.

* Suppose you want to increase 1 minute cooking time during 5 minutes at MED HIGH cooking.

Procedure

Pad Order

Display-

1. Enter desired cooking time.

5 0 0

11

1-j i-i

-I l

l-1 i-1

1

2. Select desired variable cooking control

MED HIGH

M. HIGH

C

i-1 1-i 1

setting.

-I l

1-i i-1

I

3. Touch the START pad.

1

START

The timer begins to count

/ down. I

/ ME0 HIGH 1

:~c_I( 1. 3L;‘~~

4. Touch the INSTANT COOK pad.

~~

J

The cooking time is increased 1 minute and continues _ to count down.

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:

The cooking time can be increased in multiples of 1 minute by repeatedly touching the

INSTANT COOK pad during the cooking program.

;-z:

s

OPERATIONFORCOMPU DEFROST'"COOKING

This Microwave Oven has special function keys to defrost meats faster and better.

Compu Defrost 1

- 5 automatically defrost minced beef, steak, whole chicken, chicken pieces and chops. Each key has 3 cooking stages. Select the desired Compu Defrost number and input the food weight by using the number pads.

+ Suppose you want to defrost 1.36 kg steak by Compu Defrost.

i

Procedure

1. Select food category for Compu Defrost.

2. Touch number pads to enter weight. (Ex: 1.36 kg should be 1.4 kg)

Pad Order

Display

2

/ 3. Touch the START pad.

START

COMPU - -

I

DEFmsT/ /i /i yI--:f’ 1

--

l

COMPU DEFFOST 1: n I

a-

I-

i-

Ll /,I I-

I

kg 1

COVER and EDGE will be displayed repeatedly and COMPU DEFROST appears, especially kg is flashing for the entrance of weight.

I COMPU

DEFROST

,

1. I

1-i

Fiashing of kg stops and kg goes on.

COMPU DEFROST

MED HIGH

I

1.

, COOK

ha 1

1 .4

and kg WIII go off

and 13.27 will appear.

TOMW M’RXT

MED HlGti

/

Tne timer begins to coun: down

Wher, the 1st stage flnishs, an

audible slgnai wtll sound and oven IS stopped

COMPU DEFROST T; ;:fi/~~ /

/ I

COMPV DWWXT

I7 \ I I- i-1 :

l-l \I I,- I? *

COMPU

,,ZFmT i- i7 \ i i- 17

I

/ COMPU -

I-.. i- i-

/ DEFR(IST /I Li i-l ,,-

1

TURN, OVER and COVER, EDGE WIII be displayed repeatedly.

1 4. Open the door. Turn over and shield

the hot portions.

10

i

Procedure Pad Order

( KfE

m

Display I

i 5 PI j *

ease put food in the oven.

/

Close the door.

Touch the START pad.

START ’

I 1 j

i

START will be displayed.

/ COMPU

DEFROST

COOK

The Timer begins to count down. When the 2nd stage finishs, an

i audible signal WI/I sound.

UED LOW

COMPU -

COVER and EDGE will oe ’ displayed 4 times repeatedlv.

/ I

The 3rd stage continues after the 2nd stage without stopping.

I

i The cooking rime WIII count down

:o zero. When the flmer reacnes :

zero, an audible signal will sound.

,

/

I

1

/

1

I I

5 7 jqy Ly

/

J / 1

STAND will be displayed j

/ continuously.

I

/ 1

I

When door is opened or CLEAR pad is touched, STAND will go out and the time of day will appear on the display.

[NOTE] -

1. The weight which can be entered 0.1 kg steps by 10 key pads.

Kilogram must be rounded off to the

nearest of a kilogram. (Example:

1.75 kg should be rounded off to 1.8 kg.)

2. Foods weighing more or less than the quantity listed in the chart should be defrosted following guidelines in the cookbook.

If the incorrect weight is entered and START pad is touched m, and incorrect weight will be displayed repeatedly. The CLEAR pad has to be touched to reprogram the oven.

3. The temperature probe is not used.

11

R -9320 R-9450

1

/ Comou Defrost”Chart /

Compu Defrost Food

Setting

Amount

Display Procedure Comment

a-

l

Minced

0.5 l Remove any thawed Stand, covered ’

beef

215 kg

p--j

[ncvEj

pieces after each stage. lo- 15 minutes.

/

Steak

0.2

‘m -1 l Before defrosting . . .

\

I

Shield the edge and

2:0 kg

0

the thin portions. After the 1 st stage . . . Turn over and shield the warm portions. After the 2nd stage

Stand, covered 1 O-l 5 minutes.

. . . If there are warm

portions, shield them.

i /I

Whole

chicken

1 Roast beef

pork

3 j

lamb

I

1.0 I

3.0 kg

j-1

l Before defrosting . . .

Shield the thin portions, wing tips and

legs.

lm/ [I l After the 1 st stage

iC,“:‘ERIm] . . s Turn over and

Stand, covered

shield the warm

1 O-l 5 minutes.

port ions.

jC3:‘iR]l&y

j

(

l After the 2nd stage

. . . If there are warm portions, shield them.

i

1’ Chicken

0.2

1, pieces

I

[m jc:‘,cF?J @ After the 1 st stage

/

!RE-][RRR~~L~ . . . Turn over and

I

1.5 kg

rearrange.

/ 4 /: I

/

/,

I 1 ii

I

i RE - 1 i ,qpR,ys i @ After the 2nd stage

* . * If there are warm

Stand, covered 1 O-l 5 minutes.

or thawed portions,

I

ll

rearrange or remove.

/

5

/ Pork chops

,’ Lamb chops

3.0 kg

j:L’R::-jl i PE-

1 jfiPR::5:

After the 1st stage

. . . Turn over and

rearrange.

After the 2nd stage

. . . If there are warm

or thawed portions,

rearrange or remove.

Stand, covered

lo-15 minutes.

12

EZ

w

TEMPERATURE COOKING (R-9450 ONLY)

This oven is equipped with a removable temperature probe which is plugged into the receptacle in the top centre of the oven cavity when cooking by temperature. Directions for correct use of the temperature probe are as follows.

To Use the SHARP Temperature Probe

1

Insert the pointed metal probe portion of the temperature probe into the food. It is easier to position the probe correctly if this is done while the food is outside the oven. Be sure to insert the probe at least 2/3 length of probe portion into the food.

For casseroles, place the probe in the centre of the food. When

Temperature Probe

cooking meats, insert in the centre and fleshy portion, away from bone or fatty sections, For poultry, insert between the

inner thigh and body of the bird.

2. Place the food on the Carousel turntable inside the oven.

8

Plug

,/f

A I/

Handle ,-I

’ ,’

,( ’

3. Insert the plug into the receptacle in the top centre of the oven cavity (ceiling of oven). Be sure the probe is securely inserted. This portion rotates as the food turns on the Carousel.

4. Shorten or lengthen the cord loop by moving the adjusting ring. Avoid placing the rubber cord directly on or in the food. By using the adjusting ring it is easy to place the probe at the desired angle.

5. Program oven for cooking by temperature as explained on pages 14 and 15 or use sensor temp setting.

6. When the food reaches the programmed temperature, the oven

will turn off automatically. The time of day will reappear on the display, If you wish to check the temperature during the standing time, leave the food in the oven with the probe in place. You can monitor any changes in temperature by simply touching TEMP pad,

:

Loop ‘.i”

/I =$ ; /(\ Cord

,\“(~ 2

\ \

F%

~ i..../‘/

1

‘--.+l ’ Adjusting Ring

I

‘i

,+

: \

Q ‘Handle

I

,:c

/I’

Probe

7. Unplug the probe plug from the receptacle before removing the food from the oven.

/

1 Use and Care of Temperature Probe :

1. Do not operate the oven empty with the temperature probe inside. To avoid this possibility, do not leave the probe in the oven when not in use.

2. The temperature probe should be unplugged and removed from the oven when not in use. Store

the probe in a safe, convenient place outside the oven.

3. Carefully wash the temperature probe in warm sudsy water and wipe dry. It is immersible, but should not be soaked. Do not wash in dishwasher.

4. Insert the thermometer portion of the probe at least 2/3 length of probe portion into the food.

5. The temperature probe should never be allowed to touch the interior walls or door of the oven.

6. DO not use the temperature probe when using a browning dish.

7. The Sharp temperature probe is designed specifically for use in this Sharp Carousel microwave oven. Do not substitute any other probe for this one. The probe cannot be used in conventional cooking or in other microwave ovens.

13

EE

-

8. Avoid harsh treatment of the probe. Do not drop the probe.

9. Pot holders may be needed when removing the temperature probe.

10. Do not remove the probe from the receptacle or from the food by pulling on the cord. Use the insulated handles.

11. Do not try to force the temperature probe into solidly frozen food.

12. Temperature readings are given for some recipes which should be cooked covered. If you wish to use the probe, cover the food with clear plastic wrap and insert the probe through the plastic wrap.

13. You will often notice a change in the temperature readout after stirring. This is normal and occurs

in conventional cooking also.

14. Recommended cooking temperatures are given on meat and poultry roasting chart and some recipes

in your Sharp Carousel microwave cookbook. YOU may choose to cook by either time or tempera- ture.

To Cook by Temperature 1

The internal temperature of the food will be displayed in the range of 30°C to 112°C. The temperature

for cooking which can be entered is between 30°C and 93°C. lf a temperature setting above 93°C or

under 30°C is entered, [m]and incorrect temperature will appear on the display repeatedly. The CLEAR pad must be touched in order to reprogram the oven.

The display will show 1 LG [] until the temperature reaches 30°C. This indicates that the temper- ature is below 30°C.

* Suppose you want to roast whole chicken to 85°C on MED HIGH.

Procedu re

Pad Order

I

Display I

1. Place probe in meat.

/

I

Insert plug into the receptacle in the /

I

1 1

top centre of the oven cavity.

I

8

5

I /

/J- /,- ! I

l-I -1 ’ !

Enter desired temperature.

I

I /

(

2. Touch the TEMP pad to select temperature cooking.

TEMP

HIGH

1111: I-

TEhw

1-r -1 c

3. Select variable cooking control

setting.

M. HIGH

MED HlGh

j When oven temperature is t

lower than 30°C.

1

, 4. Touch the START pad.

START

When the internal temperature reaches 3O”C, the readout will display the actual temperature of the food as it increases to 85°C. When it reaches 85°C as detected by the temperature probe, the oven will automatically shut off and the end of cooking signal will sound. All indicator lights will go out. The time of day will reappear on the display.

NOTE: If you are in the process of cooking using the temperature probe and wish to check the

temperature you have programmed, simply touch the TEMP pad. As long as your finger is touching the TEMP pad, the final temperature will be displayed.

14

R-9320 R-9450

To Monitor Temperature ;

If the temperature probe is plugged into the receptacle in the top centre of the oven cavity and the probe is placed in water or food, the temperature of the water or food can be monitored on the readout.

Procedure

Pad Order

Display

/

1 1. Touch the TEMP pad.

I / I

TEMP

i Temperature detected by ,

temperature probe will appear /

/ on display. 30°C to 112” C / will be displayed. I

1

1 The time of day will reap-

pear on the display.

1

CLEAR

/ 2. To return to the time of day.

To Cook by Temperature Followed by Time

This oven can be programmed to maintain any temperature from 30°C to 93°C for up to 99 minutes, similar to the automatic thermostat on an electric skillet or on a conventional range. This feature can be used to keep food warm at the desired serving temperature until ready to eat, or food can be

simmered at a specific temperature for up to 99 minutes.

* Suppose you want to heat a spaghetti sauce to 80°C on MED HIGH and then maintain exactly

80°C for 1 hour to blend the flavors and thicken the sauce.

r-

Procedure Pad Order

/

Display

c

1. Place probe in casserole of spaghetti sauce. Insert plug into the receptacle

in the top centre of the oven cavity.

Enter desired temperature.

-I__

8 0

2. Touch the TEMP pad to select tem-

perature cooking.

/ TEMP

TEMP

3. Select desired variable cooking cont-

rol setting.

MED HIGH

TEMP

M. HIGH

4. Enter desired cooking or “holding”

time to maintain 80°C for 1 hour.

i

When oven temperature is

lower than 30°C.

5. Touch the START pad.

When the internal temperature reaches 3O”C, the readout will display the

actual temperature of the food as it

increases to 80” C.

When it reaches 80°C.

I,- r-l

I7 i-l

TEMP l-1 1-1 l i-i I-I 1 COOK

The cooking time will count down to zero. When the timer reaches zero, all indicator lights will go c and an audible signal will sound. The time of day will reappear on the display.

It

NOTE.

In the above example, if the actual temperature drops below 90°C during the 60 minutes

“holding” time, microwave energy will come on long enough to boost the temperature back up to 80°C. The HIGH indicator will light momentarily while the microwave energy is on. The programmed temperature can be checked during cooking or during the “holding” time by touching the TEMP pad. AS soon as your finger is removed from the TEMP pad, the display will resume counting down to zero.

15

:-z:

s

- To Cobk with Sensor Temp l- 5 -

-.

- ._~-

-____

Sensor Temp l-5 automatically cooks roasts and poultry to an exact internal doneness.The turnover, finished temperatures and power levels are already calculated. Just select the appropriate

Sensor Temp setting and the oven does the rest.

* Suppose you want to cook Roast Beef (Med) with Sensor Temp 2.

c

I

L

1

Procedure

I

Pad Order

1. Place probe in meat. Insert plug into

/

the receptacle in the top centre of the

1

oven cavity. Touch the SENSOR

SENSOR TEMP ]

TEMP pad.*

2. Select desired Sensor Temp setting. Touch 2 to cook roast to medium doneness.

i 2 I i

3. Touch the START pad.

,

START /

/

-__

4. Approximately halfway through the cooking time, meat should be turned over. At that time, and an audible

signal will sound four times,

___-_----- - .--

5. Open the door and turn over meat.

Then close the door.

L

Display

1 SENSOR

1: T -1

TEMP

,I I - 1:

/

SENSOR

/ TEMP

COOK

i

SENSOR

TEMP

ly ‘\:;I I+’ /

COOK ’

TURN and OVER will be

displayed repeatedly.

SENSOR TEhlD

When the internal temperature of the meat is 42°C.

6. Touch the START pad.

START

SE NSOF TMF

I-(! (-7 I--

--

COOk

The temperature will be displayed as it increases.

SENSOR

I,- r-i I-

TEMP

i-1 1-r l-

COOK

-- --__--___

When ftnal temperature IS

reached, an audible slgnal WI/! sound.

And

then

STAND and COVER will be displayed repeatedly.

7. Open oven door or touch the STOP pad.

STOP

STAND and COVER will go

Out.

* If you program Sensor Temp without plugging the temperature probe into the receptacle in the top

centre of the oven cavity, TEMP indicator and ;P R/-j&F,will flash on the display. Insert probe plug

into the receptacle to stop flashing. Continue to program as directed.

NOTE. Insert the temperature probe at least 2/3

length of probe portion into the food from the side. And check the point of the probe is located in the centre of the food.

16

R-9320 R-9450

j TO Cook with Sensor Temp 6 (Simmer) ’

Sensor Temp 6 is used for SIOW cooking. Sauces, stews or meats that benefit from slow cooking can

be done very easily. Sensor Temp will bring the food quickly up to temperature and maintain it for

up to 4 hours.

* Suppose you want to cook Beef Stew with Sensor Temp 6 (Simmer).

i

Procedure

Pad Order

Display

I 1. Place probe in casserole.

Insert plug into the receptacle in the top centre of the oven cavity. Touch the SENSOR TEMP pad.

1 SENSOR TEMP j

2. Touch 6 to simmer stew. 6

t

I 4. When stew reaches 80°C, stew should

/

be stirred, At that time, an audible

SENSOR

1: 7 i 1-i

signal will sound four times.

TE MP

-1 I

I Ii

COOK

---

l

j STIR will be displayed.

I

/

t

SENSOR 5 r TEMP

+

SENSOR TEMP

: 3. Touch the START pad.

START

SENSOR TEMP

1

j 5. Open the door and stir stew, then close

/

I

the door.

- T/7,77-

g;OR 5 I l-l IT I

/ I j

I

/ SENSOR

l,i 17 I-

!

’ TEMP

6. Touch the START pad.

START

1-I Cl L ,

, COOK

j 80°C WIII be displayed for

.

,

/ up to 4 hours.*

+ If you want to simmer food for less than 4 hours, stop oven after desired simmer time.

NOTE: If you touch the wrong pad, retouch the correct pad.

You cannot select a setting higher than 6 (7, 89, 0).

Temperature Chart 1

For more complete information see your Sharp Carousel microwave cookbook.

/

\

Food

I nternai Temperature Internal Temperature After

at End of Cooking Time

Standing Time (10 to 15 min.)

Beverages Water base

65-70°C

Milk base

60-65” C

I

Casseroles

I

60-65” C

I

j

I

Leftovers

i

60-70” C

I

soups

I

60-70°C

I

1

Lamb

Medium

Well Done

60°C 68- 70” C 70°C

77-82°C

/ Veal

I

68-71°C

I

77-82” C

Meat loaf

70°C

73°C

17

zE8 L -

ISensor Temp Menu Guide ’

Sensor Temp

Food

Internal Temp.

Comment

Setting

at End of Cooking

1

~~

Roast beef

50°C

l Turn over after oven signals four times.

(Rare)

(Approximate half way of total cooking time.)

l Stand, covered with foil 1 O-l 5 min. after cooking.

/

2

El

Roast beef 60°C

a Turn over after oven signals four times.

\

WedI

(Approximate half way of total cooking time.)

l Stand, covered with foil 10-l 5 min. after cooking,

Roast beef

(well)

70°C

l Turn over after oven signals four times.

(Approximate half way of total cooking time.)

l Stand, covered with foil lo-15 min. after cooking.

Roast Pork

75°C

\

l Turn over and remove shield after oven signals four timeS.

(Approximate half way of total cooking time.)

l Stand, covered with foil lo-15 min. after cooking.

Poultry

/

80°C

l Turn over after oven signals four times.

(Approximate half way of total cooking time.)

l Stand, covered with foil 1 O-l 5 min. after cooking.

Simmer

J

80%

l Stir and replace probe in casserole after oven signals four

\

times, (When temperature of food reaches 80°C.)

l Stir some times if desired during cooking for up to 4 hours.,

TQCANCEL A PROGRAMDURINGCOOKING

If you are in the process of cooking and wish to stop the oven and cancel the entire cooking program,

follow either of the steps below:

1. Open the oven door. 2. Close the door. 3. Touch the CLEAR pad.

or

1. Touch the STOP pad.

2. Touch the CLEAR pad.

18

R-9320 R-9450

AUTO START SETTING

If you wish to program your oven to begin cooking automatically at a designated time of day,

follow this procedure:

* Suppose you want to start cooking a stew for 50 minutes on MED at 4:30 this afternoon.

Before setting, check to make sure the clock is showing the correct time of day.

Procedure

Pad Order

--

Display ;

,

/

1

I

1

I

1. Enter the desired start time.

I

-,

I2T

I

. ouch the AUTO START/CLOCK

:

I--

AUTOS-DR-T 1

I-/ l

,i I7 ;

.

/ CLOCK 1

-I I-j

pad.

I

AUTO

/ ik; ;&Ion !:I ,NIII flash on

I

PPP___

3. Enter the desired cooking time.

5 0~0’0’

1: 1-l

r7 i-i

-1 /-I

----

i-1 1-i

I

AUTO

) 4. Select desired MED setting.

MED

WED

I,- r-l

ri 17

I

-I i-i . i-i i-i

AUTO

--START

Suppose you are settmg at /

1:00 p.m.

I

-- ’

I : /y/y

5. Touch the START pad.

AUTO

I

It comes at 4:30 p.m.

ME0

I,- I7 I-i I7

COOK

,I i-1 0 i-i i-i 1

.

/

I

I /

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: The Auto Start feature can be used for any of the programs described on the previous

pages except Sensor Temp settings and Compu Defrost settings. Once you have correctly programmed the oven for Auto Start, the correct time of day (not the Auto Start time) will appear on the display. To check the programmed Auto Start time, touch the AUTO START/CLOCK pad. The programmed Auto Start time will appear on display as long as your finger is touching the pad.

To cancel Auto Start, simply touch the CLEAR pad twice.

WHEN ELECTRICAL POWER IS INTERRUPTED

If the electrical power supply to your microwave oven should be interrupted, all digital display and indicator lights will appear after the power is reinstated. If this occurs during cooking, your cooking program and the time of day will be erased.

Simply reset the clock for the correct time of day.

19

OPERATION

DESCRIPTION OF OPERATING SEQUENCE

The following is a complete description of component functions during the two stages of oven operation.

OFF CONDITION

Closing the door activates both door latch switches: upper

latch switch and lower latch switch. (In this condition, the monitor switch is opened).

The stop switch on the control panel is activated by the door lever. When oven is plugged in, the 240 volts A.C. is supplied to the control unit. But no components in the oven will operate, (Figure 1.) Note: When the door is opened by pushing the door open

button, the oven lamps come on.

1. The display, will show a flashing “88:88” and ail indicators will light. To set any program or set the clock, you must first touch the CLEAR pad.

This will cancel “88:88” and all indicators, and 1:OO will appear on the display and count up every one minute.

COOKING CONDITION

1. HIGH COOKING Program desired cooking time and Variable Cooking Con-

trol by touching the NUMBER pads and the HIGH pad of

the Variable Cooking Control.

When the START pad is touched, the following operations occur: (Figure 21

5-t The COOK and HIGH indicators light.

The numbers of the digital readout start counting down to zero.

4 -2

The coii of control relay (RL2) is energized.

A. The relay contacts (A) close to provide a current

path to the oven lamps.

B. The relay contacts (B) close to provide a current

oath to the turntable motor and fan motor.

f-3 The coil of cook relay (R Ll ) is energized.

The relay contacts close to provide a current path to

the power transformer.

14

The 240 volts A.C. is supplied to the primary winding of the power transformer and is converted to 3.45

volts A.C. output on the filament winding, and approximately 2350 volts A.C on the high voltage winding.

l-5 The 3.45 volts A.C. output from filament winding

heats the magnetron filament.

l-6 The 2350 volts A.C. output from the high voltage

winding of the power transformer is sent to a voltage doubler circuit consisting of a high voltage capacitor

and a rectifier.

The 2350 volts A.C. is converted to approximately

4900 negative D.C. voltage (peak to peak) by the voltage doubler circuit and sent to the magnetron tube assembly .

1-7 The negative 4000 volts D.C. is applied to the

cathode of the magnetron tube. This causes the

magnetron to oscillate and produce the 2450 MHz

cooking frequency.

1-8 The RF energy produced by the magnetron tube is

channeled through the waveguide into the cavity feed-box, and then into the cavity where the food is

placed to be cooked.

l-9 Upon completion of the cooking time, the follow-

ing results will occur:

A. The control relay (RL2) will be de-energized,

de-energizing the oven lamps, fan motor and turntable motor.

8. The cook relay (RLl ) will be de-energized, opening the circuit to the power transformer stopping the generation of microwave energy by the magnetron.

C. The COOK and HIGH indicators will go out,

and the time of day will reappear.

D. The end of cooking signal will sound, and the

oven will revert OFF condition.

l-1 0 When the door is opened .during a cook cycle, the

latch switches, the stop switch and the monitor switch are activated with the following results. The circuits to the turntable motor, the fan motor, and the high voltage components are deenergized, the oven lamps remains on, and the digital readout dispiays the time still remaining in the cook cycle when the door was opened.

l-l ? The monitor switch is electrically monitoring the

operation of the upper and lower latch switches and

is mechanically assocrated with the door so that it will function in the following sequence. (1 1 When the door opens from closed position, the

upper and lower latch switches first operate to open their contacts, and then the monitor switch contacts close.

(2) When th

e d oor is ciosed from open position, the

monitor switch contacts first open, and then the

contacts of the upper and lower latch switches ciose.

In case the upoer and lower iatch switches both fail with their contacts ciosed when the door is opened, closing of the monitor switch contacts will form a short circuit through the fuse, upper latch switch and lower latch switch, causing the fuse to blow.

20

R-9320 R-9450

2. MED HIGH, MED, MED LOW or LOW COOKING. Program desired cooking time by touching the number pad or pads and the MED HIGH, MED, MED LOW or

LOW pad of the Variable Cooking Control. When the START pad is touched, the following operations occur: 2-l 2-2

2-3

MED HIGH

MED

LOW

The control relay and cook relay are energlzed. The COOK and selected Variable Cooking Control injicators light.

240 volts A.C. is supplied to the power transformer

Intermittently through the contacts of the cook relay

tihich is operated by the control unit within a 32

second time base. The microwave power operation is as follows:

ON

VllCROWAVE POWER

= Approx ‘0%

ON

74 set

MICROWA’dE POWER

OFF

= Appwx 50”:

MICROWAVE POWER = Aporox 30”~

6 sec.

MICROWAPLE POWES

/ = ADQroX ‘0%

Note: The ON/OFF time ratio does not correspond with the

percentage of the microwave power, because approx. 2 seconds are needed for heating of the magnetron

filament.

3. SENSOR TEMP COOKING (R-9450 ONLY) Inserting the temperature probe into the receptacle con-

nects the probe’s resistance to the control unit.

Set the desired program by touching the SENSOR TEMP

pad and Number pad.

The cooking temperatures and varrable cooking powers for

each cook setting have been preselected and stored in the control system.

For example select SENSOR TEMP 2

(roast beef),

When the START pad is touched, the following operations

occur: (Figure 3)

3-l 3-2 3-3

3-6

3-7

3-a

3-9

The COOK, SENSOR and TEMP indicators light. A-2 appears on the display (when No. 2 is touched).

The control relay (R L2) and cook relay (R Ll ) are energized, energrzing the oven lamps, fan motor, turntable motor and high voltage section. The 240 volts A.C. is supplied to the power transformer zntermittently through the cook relay contacts which IS operated by the control unit Jvlthin a 32 second base. The microwave power operation during firsr stage is at

MED-HIGH (24 seconds ON and 8 seconds OFF!.

When the orobe tip reaches :he preorogrammed tem- perature (4O”Ci, TURN and OVER indicators will light on the display and an audible srgnai will sound four

times.

TURN and OVER ndicators w111 light ;Intli the door

has been ooened and closed ior the CLEAR pad is touched ). When COCK pad .s touched, the oven WIII resume cooking. The microwave power IS at MED i 18 seconds ON and

14 seconds OFF) during this second stage. The temperature of the food will be displayed. rising as the food cooks until the preprogrammed temperature

(60°C) is reached.

When the probe TIP reaches the preprogrammed tem-

perature {6O”C), the end of cycle, signai will sound, the

oven automaticaly shuts off, STAND and COVER will now be displayed continuously until the CLEAR pad is touched or the door open button is pressed. The time of day will then appear in the display. Note: Whenever any temp. cook cycle has ended and

the probe remains in place touching the TEMP. pad will cause the actual food temperature to

appear in ‘the display.

SENSOR TEMP - PROBE INSTALLED

First stage

Second stage

I

Menu

Internal I

I

J

No.

Menu

temperature

/

P’ I

b Complete j p2 ’

Note

when

I

temperature i

TURN OVER ;

I

/

I

,

j 1

I

i Roast beef (Rare)

4o”c j ;,g

5o”c i

MED ;

!

60°C ; MED /

4

2 i

Roast beef (Med)

MED

1

I

4o”c

HIGH j

3 ;

Roast beef (Well-done)

1 4 j Roast pork

5 ~

Poultry

6

Simmer

45Oc ’

MED ’

/

HIGH j

7o”c I MED

/

I

/

45Oc

Ii%: j

750~ i

MED

I

,

5o”c j

I

i

t%; I

80°C 1

MED

i

’ MED

80°C /

-

/ HIGH

i -

Hold temperature for max. 4 hours.

1

LI

240V 50Hz

* SLIP CONNECTOR

(R-9450 ONLY 1

OF OVEN

1. DOOR CLOSED

2. CLOCK APPEARS ON DISPLAY

3. TEMP PROBE DISCONNECTED

~NEUTRAL 1 j LIVE]

h

i-sicl

0p

MONITOR SWITCH

z.T

(A)

(2) 1 (3)

I

i RELAY I------

FAN MOTOR

(Gi+---

r

TURNTABLE MOTOR

POWER TRANSFORMER

I------

---------l

I

c

f

I

I T - P-1

(4) ; (51

-6b

(B)

---

+I-----II- ----it-

PROTECTOR

FUSE MlOA

LOWER LATCH

SWITCH

MAGNETRON TEMP. FUSE

COOK

RELAY

’ CONTACTS

Figure 1. Oven Schematic-Off Condition

22

R-9320 R-9450

240V 50Hz

T7

* SLIP CONNECTOR

(R-9450 ONLY)

SCHEMATIC

NOTE: CONDITION

OF OVEN

1.

DOOR CLOSED

2. COOKING TIME PROGRAMMED

3. VARIABLE COOKING CONTROL HIGH

4.

TEMP PROBE DISCONNECTED

5.

“COOK” PAD TOUCHED

3 iI

[ NEUTRAL] ‘$Gij ~

[p&q

MONITOR SWITCH

UPPER LATCH SWITCH

‘I

OVEN LAMP

(Al

Al ,

(2) 1 (3)

--- -

/

I

/

I

/ c2

----q- CONTROL

STOP p

, & UNIT

SWlTCH L;

I T

! Fl

4-

SLIP

T*---

CONNECTOR ;! _ _ _

A4,

- ---’

! COOK ’ RELAY

L-----

FAN MOTOR u

TURNTABLE MOTOR

POWER TRANSFORMER

--_-_

A

MAGNETRON

FUSE MlOA

LOWER LATCH SWITCH

MAGNETRON TEMP. FUSE

COOK

RELAY

CONTACTS

Figure 2. Oven Schematic-Cooking Condition

23

240V 50Hz

+ SLIP CONNECTOR

AND TEMP. PROBE

(R-9450 ONLY)

SCHEMATIC

NOTE: CONDITION

OF OVEN

1.

TEMPERATURE

PROBE INSERTED

2. DOOR CLOSED

3.

“SENSOR TEMP AND “NUMBER” PADS TOUCHED.

4. “COOK” PAD TOUCHED.

I

MON IT%%

UPPER LATCH SWITCH

OVEN LAMP

(A)

r-4 !

Al A2

(2) 1 (3)

--1

I

‘i-4

I

A41

;--~~L ~~~~~ (5) .

I c-l

SLIP CONNECTOR

---I--

, COOK , RELAY

I

(B)

TEMP. PROBE

A----_

FAN MOTOR

TURNTABLE MOTOR

POWER TRANSFORMER

-----

I I

/

SHORT /

_‘j i?kR ;

PROTECTOR ! +

.

I

u-d 1

-

L--_

i-

--

---

/g

I

m

RECTIFIER

i

FUSE

MlOA

LOWER LATCH

SWITCH

MAGNETRON TEMP. FUSE

COOK

RELAY

CONTACTS

Figure 3. Oven Schematic -

Sensor Temp Cooking Condition (R-9450 Only)

24

R-9320

R-9450

DESCRIPTION AND FUNCTION OF COMPONENTS

OVEN LAMP

The oven cavity lamp illuminate the interior of the oven so that the food being cooked can be examined visually through the door window without having to open the door.

FAN MOTOR

The fan motor drives a blade which draws cooling air through the oven base.

This cooling air is directed through the air vanes surrounding the magnetron and cools the magnetron assembly. Most of the air is then exhausted directly through

the back vents. However, a portion of this air is channeled through the cavity to remove steam and vapors given off from the heating foods.

It is then exhausted at the top of the oven

cavity into a condensation compartment.

TURNTABLE MOTOR

The turntable motor rotates the turntable located on the bottom of oven cavity, so that It works to cook the foods on

the turntable evenly.

COOK RELAY

The coil of the cook reiay is energrzed oy the control unit, thereby closing its

contacts which provide a current path to

the power transformer. The cook relay is activated by 18 volts D.C. supplied from the control unit.

STOP SWITCH

The stop switch is provided on the open device of the control

panel assembly and activated by the open button. When the open button is depressed while the oven is in cook cycle, the stop switch contacts open to de-energize the control relay and cook relay circuits and causes cook time counting-down to

pause.

TEMP. FUSE

The temp. fuse located on the magnetron is designed to pre-

vent damage to the magnetron if an overheated condition

develops in the tube due to cooling fan failure, obstructed air

ducts, dirty or blocked air intake, etc.

Under normal operation, the temp. fuse remains closed. However, when abnormally high temperatures within the mag-

netron approach a critical level, the temp. fuse will open and

interrupt the circuit to the oven, causing it to shut down. This is a fuse and it does not reset.

TEMPERATURE PROBE (R-9450 ONLY)

The temperature probe assembly consists of a thermistor

element, shield case, wire lead and plug. The thermistor in the

probe tip is a negative temperature coefficient type.

Nominal resistance of the probe at room temperature (25°C)

is approx. 42.6 to 58.0 kilo-ohms. As the temperature of the probe increases, the resistance decreases as shown in the following chart.

The change in probe resistance is applied to the printed wiring board.

THERMISTOR

TEMPERATURE

25°C 32°C 38°C 66°C

93k

98°C

PROBE

RESISTANCE

(APPROX.)

42.6 - 58.0 kfi

31.8 - 42.8 kfi

24.9 - 33.2 kL?

8.5 - 10.9 ka

3.7 - 4.1 k!J

3.2 - 3.9 kfi

DOOR OPEN MECHANISM

The door can be opened by pushing the open button on the control panel, refer to Figure 4. When the open button is pushed, the open plate on the open device pushes in the door

lever on the door, operating the latch head linkage. The lower and upper latch heads are moved upward, and released from the lower and upper latch hooks.

Now, the door can be

oDened.

LATCH HEAD

LOWER LATCH H

EAD

OPEN

SUTTON DEVICE

Figure 4. Door Open Mechanism

25

UPPER AND LOWER LATCH SWITCHES

The upper latch switch is mounted in the upper latch hook and the lower latch switch is mounted in the lower latch

hook. They are activated by the latch heads on the door. When the door is opened, the switches interrupt the circuit to all components except the oven lamps. A cook cycle cannot take place until the door is firmly closed thereby activating both switches.

MONITOR SWITCH

The monitor switch mounted on the upper latch hook is activated (the contacts opened) by the latch head on the

door while the door is closed, refer to Figure 5. The switch is intended to render the oven inoperative by means of blowing the fuse when the contacts of the upper latch switch fail to open when the door is opened.

Functions;

1. When the door is opened, the monitor switch contacts

close (to the ON condition) due to their being a normally closed. At this time the upper latch switch is in the OFF condition (contacts open) due to its being a normally open contact switch.

2. As the door goes to a closed positron, the monitor switch contacts are first opened and then the upper latch switch contacts close. (In case of opening the door, each of the two switches operate inversely.)

3. ,lf the door is opened and the upper latch switch contacts fail to open, the fuse blows simultaneously with the ciosrng of the monitor switch contacts.

CAUTION:

BEFORE REPLACING A BLOWN FUSE, TEST THE UPPER LATCH SWITCH AND MONITOR SWITCH FOR PROPER OPERATION (REFER TO THE TEST PROCEDURE ON PAGE 33.)

*,

<5,

///-

-/

/

, ,;G

UPPER

r ,’

LATCH

I

I /

t /

I

1 I

I

LATCH ,/’

HOOK

1 LATCH

HEAD

LiPPER LATCH

SWITCH

LOWER LATCH HOOK

LOWER LATCH

SWITCH

Figure 5. Latch Switches and Monitor Switch

26

R-9320

R-9450

POWER TRANSFORMER

The transformer consists of three windings: primary, filament and high voltage.

During a cook cycle, the 240 volts A.C. applied to the

primary winding of the transformer through the cook relay contacts is converted to 3.45 volts AC. on the filament winding and approximately 2350 volts A.C. on the high

voltage winding. The 3.45 volts A.C. voltage heats the

magnetron filament. This causes the tube cathode to

readily emit the electrons necessary for tube conduction

whenever the negative 4000 D.C. voltage is applied to the

cathode.

The 2350 volts A.C. voltage is fed to the voltage doubler circuit.

VOLTAGE DOUBLER CIRCUIT

The voltage doubler circuit consists of a rectifier and

a capacitor. The 2350 volts A.C. from the high voltage winding 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 device that allows

current flow in one direction, but prevents current flow in

the opposite direction.

This acts as rectifier changing

alternating current into pulsating D.C.

WITHOUT

MAGNETIC

FIELD

; 7 CATHODE

Figure 6. Basic Magnetron without

Magnetic Field

High voltage capacitor: The capacitor is able to store energy on one half of the power cycle and release it along with the transformer output to produce approx. 4ooO

negative D.C. volts to the magnetron.

MAGNETRON TUBE

The basic magnetron tube is a cylindrical cathode within a

cylindrical anode surrounded by a magnetic field. When the

cathode is heated by the filament winding of the power

transformer, electrons are given off by the cathode. These

negatively charged electrons are attracted to the more

positive anode of the tube when the negative 4000 D.C.

voltage is applied to the cathode.

Ordinarily, the electrons would travel in a straight line from

the cathode to the anode as shown in Figure 6. But the

addition of a magnetic field, provided by permanent

magnets surrounding the anode, causes the electrons to take

an orbital path between the cathode and anode, Figure 7. As the electrons approach the anode, they travel past the small resonant cavities that are part of the anode. Interac-

tion occurs, causing the resonant cavities to oscillate at the

very high frequency of 2450 megahertz. This RF energy is

radiated from the magnetron antenna into the waveguide

into the cooking

cavity feedbox, and finally into the

cooking cavity where food has been placed to be cooked.

WITH

MAGNETIC

f-7 -

FIELD

I-’

1 1 i 47 n ,n

ANODE /

i CATHODE

COOKING LOAD’

Figure 7. Basic Magnetron with Magnetic Field

27

SERVICING

TROUBLESHOOTING GUIDE

When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks.

Many of the possible causes of trouble will require that a specific test be performed.

These tests are given a procedure

letter which will be found in the “Test Procedures” section.

INPORTANT: If the oven becomes inoperative because of a

blown fuse in the upper latch-monitor-lower latch switch circuit, check the upper and lower latch switches and monitor switch be-

fore replacing the fuse.

PROBLEM

POSSIBLE CAUSE

I

TEST PROCEDURE OR

’

CORRECTION

OFF CONDITION

I

1

Home fuse blows when power cord

is plugged into wall receptacle.

Shorted wire in power cord or wire harness.

1 Replace cord or check wiring. 1

I

Oven fuse blows when power

j Shorted wire in power cord or wire harness, Replace power cord or check and

j

, cord is plugged into wall receptacle.

repair wire harness.

J

Defective monitor switch.

’ Procedure G.

I I

88:88 and all indicators do not

No power at outlet.

Check home fuse.

I

appear in display when power cord

/

.

is first plugged into wall outlet.

Blown oven fuse. Procedure H.

Open wire in power cord, wiring harness, or wtring between control panel assembly units.

Replace or repair wiring.

Defective control unit. Procedure N.

Display does not operate properly when CLEAR key is touched.

Defective key unit.

~---

Defective control unit.

Procedure N.

Defective stop switch. Procedure L.

-__-----.- - .-

Oven lamps do not light with

No power in home.

Check wall outlet.

door opened.

Open wire in power cord or wire harness. Replace same or repair wiring.

Defective oven lamp.

Replace.

Defective lower latch switch.

Procedure F.

Open or loose wire connectlon to the above components.

Check wiring.

_.- -

-___ -

Blown oven fuse.

Procedure H.

__. -- -~__ _ ~-~

~___ _. _.

___-~ -~

-..__-

28

-

R-9320

TROUBLESHOOTING GUIDE (CONT’D)

R-9450

PROBLEM

POSSIBLE CAUSE

TEST PROCEDURE OR

I

CORRECTION I

COOKING CONDITtON

Oven lamps do not light in cook

Defective contacts (A) of control relay

Procedure J.

cycle.

(RL2).

(Do light when door is opened)

Defective control unit.

Procedure N.

1 I

t

1

Oven lamps do not light at all.

Burned out buib.

Replace.

4

Open wiring to oven lamp.

Check and repair wiring.

Oven lamps light, but turntable

motor does not operate.

Defective contacts (B) of control relay

(RL2).

Procedure N.

Turntable motor operates. normally but fan motor does not operate.

Defective turntable motor.

--__

Blown magnetron temp. fuse.

-

Defective fan motor.

Open or ioose wiring to the fan motor.

Replace.

---

Procedure I.

Replace.

Check and repair wiring.

Oven does not go into a cook cycle when Cook key is touched.

Upper and/or lower latch

switches defective or out of adjustment.

Procedures E and F.

Defective cook relay (RLl).

Defective control unit.

Procedure Y.

Procedure N.

Defective key unit.

Procedure N.

,

Open or loose wiring to above components. Check and repair wiring.

Oven seems to be operating but little or no heat is produced in

1 oven load. (Flood incompletely

cooked or not cooked at all at

end of cook cycle)

Defective magnetron. Procedure A.

Defective cook relay (RLl ).

Procedure K.

I

Defective power transformer.

Procedure B.

/ Defective rectifier.

/ Procedure C.

Defective high voltage capacitor. Procedure D.

Defective control unit.

Procedure N.

Open or loose wiring to above components. Check and repair wiring.

1

1 Oven goes into a cook cycle but 1 extremely uneven heating is / produced in oven load (food).

Turntable motor does not operate. Refer to preceding 4urntable

motor problem.

. .

I

’ Oven does not cook properly

Defective control unit.

Procedure N.

when programmed for MEDIUM

LOW, MEDIUM or MEDIUM

Defective key untt.

Procedure N.

HIGH cooking powers.

(Operates properly on HIGH) Open or loose wiring between above Check and repair wiring.

components.

I

29

? -9320 3 -9450

TROUBLESHOOTING GUIDE (CONT’D)

PROBLEM

POSSIBLE CAUSE

’

TEST PROCEDURE OR

CORRECTION

(R-9450 ONLY)

When oven is set for temperature controlled cooking - (Temperature probe installed):

“EE” appears in the display. (Oven does not operate)

Temperature probe open or shorted.

1 Replace probe.

I

,

Slip connector contacts and/or connected

j Replace slip connector and/or

I

wiring open.

; repair wiring.

I

Defective control unit.

/ Procedure N. I

Temperature control operation.

(CONTINUED) Temperature appearing in display is different from food temperature.

Defective temperature probe.

Defective control unit.

Procedure M.

Procedure N,

30

TEST PROCEDURES

ROCEDURE 1

LETTER 1

COMPONENT TEST

A ~

MAGNETRON ASSEMBLY TEST

I

i DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY / OVEN COMPONENTS OR WIRING.

’ To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across i the magnetron filament leads should indicate less than 1 ohm.

/ To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads and j chassis ground. This test should indicate an infinite resistance. If there is little or no resistance, the magne: tron is grounded and must be replaced.

I 1 Power out.put of the magnetron can be measured by performing a water temperature rise test. This test

’ should only be used if above tests do not indicate a faulty magnetron and there is no defect in the following ’ components or wiring: rectifier, high voltage capacitor, heater transformer and power transformer.

MICROWAVE OUTPUT POWER Microwave output power from the magnetron can be measured by way of substitution, i.e. it can be measured by using water load how much it can be absorbed 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;

P-t

- =V*AT

4.2

P

4.2 l V l AT

=

t

NV)

Our condition for the water load is as follows;

Water load . . . . .2OOO ml

Heating time . . . 120 seconds (2 minutes)

Measuring method;

1. Put the water load of two (2) litres on the center of the oven shelf. The water load should be arranged in two (2) Pyrex beakers, the size of which is one (1) litre, and be placed at right and left, side by side, on the oven shelf.

2. Measure the temperature of water before heating and also aher heating during two minutes by microwave, and calculate the temperature rise. The temperature rise should be the average of temperature differences measured in each beaker.

3. The output power should be calculated as follows.

In case the measuring result is not satisfactory, execute the measurement several times and judge the

result from the synthetic point of view.

Microwave output power should be within 215% of the nominal one.

31

TEST PROCEDURES (CONT’D)

PROCEDURE

LETTER

A

(Cont’d)

B

C

T

I-

! I

-!I

I / I

I I I

I

c

I /

/ I

1 I

I /

i

COMPONENT TEST

Calculation of output power; Microwave output power . . .P (W) = 70 x m (“C)

aT =

(ATL + ATR)

2

: average temperature rise

ATL = (TL2 - TL, )

ATR = (TR2 - TR1 )

TL2

: water temperature after heating in left beaker

J-L1

: water temperature before heating in left beaker

TR2

: water temperature after heating in right beaker

TRI

: water temperature before heating in right beaker

Measuring condition; As the microwave output is affected by several conditions, the measurement should be made

carefully with following attentions.

1. Initial temperature of salt water should be 2OAl’C. (The salt water should be contained bon (1) percent of salt.) Well and quickly stir the water and the temperature measurement should be done immediately after heating.

2. The graduation of thermometer should be scaled by O.l’C at minimum and an accurate mercury thermometer is recommended.

3. Water container should be one (1) litre beaker made of Pyrex glass and its diameter approximately 12 cm.

4. Room temperature should be around 2O’C.

5. Power supply voltage should be 240 volts.

POWER TRANSFORMER TEST

DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY

OVEN COMPONENTS OR WIRING.

Disconnect primary input terminals and measure the resistance with an ohmmeter. Check for the continuity of coils with an ohmmeter. On the RX1 scale, the resistance of the primary coil should be approximately 1.5 ohms and the resistance of high voltage coil should be approximately 80 ohms, and the resistance of filament coil should be less than 1 ohm.

(HIGH VOLTAGES ARE PRESENT TO HIGH VOLTAGE TERMINAL, SO

THAT DO NOT INTEND TO MEASURE THE FILAMENT AND HIGH VOLTAGE,)

RECTIFIER TEST

DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance ,

across the terminals and observe, reverse the leads to the rectifier terminals and observe meter / reading. If a short is indicated in both directions, or if an infinite resistance is read in both directions, the rectifier is probably defective and should be replaced.

32

TEST PROCEDURES (CONT’D)

PROCEDURE

LETTER

COMPONENT TEST

D

HIGH VOLTAGE CAPACITOR TEST

DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHtNG ANY

OVEN COMPONENTS OR WIRING.

I

1 If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads 1 and check for short or open between the terminals using an ohmmeter. / Checking with a high ohm scale, if the high voltage capacitor is normal, the meter will indicate

I

continuity for a short time and should indicate an open circuit once the capacitor is charged. If the 1 above is not the case, check the capacitor with the ohmmeter to see if it is short circuited between j the terminals. If it is short circuited, replace the capacitor. I

E

I I

UPPER LATCH SWITCH TEST

/ The upper latch switch can be checked with an ohmmeter. Isolate the switch and then connect the

meter leads to the common ICOM) and normally open (NO) terminals of the switch. The meter

I should indicate an open circuit with the door opened and e closed circuit with the door closed.

In case improper operation is indicated, make a necessary switch adjustment or replace the 1 defective switch. / See adjustment procedure on page 58.

!

1

/

F I

LOWER 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. When 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 circuit with the door closed.

In case improper operation is indicated, make a necessary switch adjustment or replace the defective

switch. See adjustment procedure on page 58.

G

MONITOR SWITCH TEST

Before performing this test, make sure that the Upper and Lower Latch Switches are operating properly refer to the Test procedure E and F. Connect one ohmmeter lead to one of the fuse terminals, and the other lead to the power transformer terminal to which the white wire from the wiring harness is connected. When the door is open, the meter should indicate a closed circuit. When the monitor switch lever of the upper latch hook is pushed by the screw-driver through the upper latch hole on the front plate of the oven cavity with the door opened, in this condition the plunger of the monitor switch is pushed in, the meter should indicate an open circuit. ln case improper operation is indicated, replace the defective switch.

33

TEST PROCEDURES (CONT’D)

’ PROCEDURE

LETTER

r

G

1 (CONT’D)

!

H

I/

I

T

-~

COMPONENT TEST

POWER TRANSFORMER

BLDWN FUSE

If the fuse in the upper latch switch, monitor switch and lower latch switch circuit is blown when

the door is opened, check the upper and lower latch switches and monitor switch before replacing

the blown fuse. (Refer to above Test Procedure E, F and G).

In case the fuse is blown by an improper switch operation, replace the defective switch and the fuse

at the same time.

Replace just the fuse if the switches operate normally.

CAUTION: REPLACE BLOWN FUSE 10 AMPERE FUSE, PART NO. QFS-CQOOIYBEO

+

MAGNETRON TEMP. FUSE TEST

A continuity check across the temp. fuse terminals should indicate a closed circuit uniess the temperature of the temp. fuse reaches approximatery 142°C.

An open temp. fuse indicates overheating of the magnetron assembly. If the temp. fuse indicates a open circuit, replace the temp. fuse and check for restricted air flow to the magnetron through the opening in the chassis, especrally the cooilng duct.

CONTROL RELAY (RLZI TEST

Disconnect the wire leads from the reiay rermrnals. Connect the ohmmeter leads to the control relay terminais (2) and (3) of contacts (A) or control relay terminals (4) and (5) of contacts (B). The meter should indicate an open circuit with power off and closed circuit wrth cook pad touched.

In case improper operation is indicated, replace the control unit.

-

K

COOK RELAY (Rtlj TEST

--

L

Disconnect the wire leads from the relay terminais and connect the ohmmeter leads to the cook

relay terminals (3) and (5).

The meter should indicate an open circuit with power off and colsed circuit with cook pad touched.

In case improper operation IS indicated, replace the control unit.

______~

STOP SWITCH TEST

Isolate the stop switch and connect the ohmmeter leads to the common (COM) and normally open

(NO) termrnals of the switch.

The meter should Indicate an open circuit with the open button

pushed and a closed circuit wtth the open button released,

In case improper operation is indicated,

repiace the stop switch.

34

TEST PROCEDURES KONT’D)

R-9320 R-9450

~~~

/ PROCEDURE :

LETTER

COMPONENT TEST

,

1

I

M

TEMPERATURE PROBE TEST (R-9450 ONLY)

I

1 Disconnect the temperature probe from the unit, and check for the continuity of the probe, connecting an : / ohmmeter to its plug.

/ I

I

On the R x 1 kilo-ohm scale, the resistance of the probe should be approx. 42.6 to 58.0 kilo-ohms at room

’ temperature 25’C, and approx. 3.7 to 4.1 kilo-ohms at 93°C .

, To check the resistance at 93’C, proceed as follows: /

’ 1. Fill 9 ounces (275 milliliters) of tap water in a 2 cup measuring cup, and place the temperature probe

into the water.

2. Place the container and probe in the center of the oven cavity.

3. Connect the probe to the receptacle which is provided at the top of oven cavity.

4. Close the door.

5. Set the cooking temperature to 93°C and touch the cook pad.

6. Approximately 4 minutes later, the cook cycle will be completed.

At this-time, the temperature of

water should be approximately 93°C.

7. Disconnect the probe from the receptacle and check for the resistance of probe immediately.

If the resistance differs from the above, the probe should be replaced.

N

TOUCH CONTROL PANEL ASSEMBLY TEST

The touch controi panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore,

unlike the conventional microwave ovens, proper maintenance cannot be performed with only a voltmeter and ohmmeter. Refer to the “TOUCH CONTROL PANEL ASSEMBLY”.

35

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

The touch control section mainly consists of the following units as shown in the block diagram. (1) Power source circuit

(2) Key unit

(3) Control unit Exchange of signals between each unit is indicated by the arrows in the block diagram.

The principal functions of these units and the signals communicated among them are explained below.

1. Power Source Circuit This circuit generates voltage necessary in the control and indicator circuit, from the AC line voltage. In addition, the 13 signal is available in order to compose a basic standard time in the clock circuit.

2. Key Unit The key unit is composed of a kind of matrix circuit; in

which, when one of signals PO - P3 and 00 - Q2 generated

by the LSI operates the key, it is given to the LSI as one of signals KO - K3.

3. Control Unit Signals of clock, display, key touch and oven function control are

al I processed

by one microcomputer

(lX2321)YA).

1) ACL The circuit to generate signal which resets the LSI to the initial state when power is supplied.

2) Stop switch The switch to “tell” the opening and closing of door to the LSI.

3) Buzzer The buzzer is responsive to signals from the LSI to emit noticing sounds (key touch sound and completion soundj.

4) Relay Circuit For driving magnetron, turntable motor, fan motor and lighting oven iamp.

5) Temperature Measurement circuit (R-9450 only) The temperature of food is measured by the probe. The probe has a thermistor built in of which resistance, varies with the temperature. The variation of resistance is detected by the temperature measurement circuit.

6) Indicator Circuit This circuit consists of 6-digits, lo-Segments and 1 l-

Segments display, five cooking mode indicators, and the following indicators using fluorescent display.

COMP, DEFROST, SENSOR, TEMP, COOK, AUTO, kg

(SENSOR, TEMP: R-9450 only) The method of display is by dynamic drive using DO through 05 as digit selecting signals. The LSI (lX2321YA) output terminals of each indicator are as follows.

so- s7 : Segment signal (a through h) u3 - Ul

: Segment signal (i through k) Gl : COMPU, MED. LOW, HIGH so

: DEFROST Sl

: SENSOR (R-9450 only) s2

: TEMP (R-9450 only) GO : COOK, AUTO and kg

36

1 2

I

3

I 4 I

5

I

6

I

BLOCK DIAGI

A

1

“I, :-18.5”

1

POWER

SUPPLY

SOURCE

240” SOHI

CIRCUIT

VP :-32”

C

B CIRCUIT

GND

I i-

,t

CONTROL RELAY

1

I

[COOK RELAY CONTROL CRCU~TI

COOK

I I

RLLAY

I

L---

I _

D

I

RELAY CONTRCL CIRCUIT

AND COOK RELAY CONTROC CIRCUIT

--

I I

-

1

E

Figure 8. Block Diagram (R.

37

7

I

8

I

9

I

10

I

11

I

12

;RAM

1

A

FLUORESCENT DISPLAY TUBE

I

,, ,‘:

I a

1 be

. j :I:

I

b, e”

m

, f ‘3

c , 9’4

1 h I_”

4c 36 IG

B

I

J

C

D

I

I I

4 i

TEMPERATURE

F-l

MEASUREMENT

1

I

CIRCUIT

t-3

1

E

1

TEMP PROBE

f

L

t

1 I

I

4

1 IR-0450 my,

--I

F

r I/I/ I

G

(R-9320/R-9450)

Ii

7 I 8 I 9

I 10 I 11 I 12

38

R-9320 R-9450

R-932

DESCRIPTION OF LSI

The l/O signals of the LSI (IX2321YA) are detailed in the following tables.

vss Dll D10 D9

08 D7 D6 05 D4 D3 D2 Dl DO FO Fl

vss F2 F3 uo Ul

u2 u3 GO Gl G2 G3

RESET 00

01

Q2 03 vss

64

I

63 62

c

.

61

r

60

I .

59

LSI

I-1

IX2321YA

58

,

57

1 .

56

3

55

I

54

,

53

,

52

I

1

51

1 ,

50

49

XIN

XOUT s7

s6

s5

s4

s3

s2

Sl so CN Vss INT VP

VDD NC

vss AVss K7

K6 K5

K4 K3 K2

41 Kl 40 KO

VREF NC

P3

P2 Pl PO T

Figure 9. Relationship between pin Nos. and Signals (LSI : lX2321YA)

39

9320 9450

Pin No.

Signal

Description

I/O

IN

1

vss

Connected to GND.

2

Dll

IN

Not used. Terminal for manufacture test.

Normally, connected to GND by pull-up resistor jR1 1).

DlO

IN

Terminal not used. Connected to GND.

D9

OUT Oven lamp, fan motor and truntable motor driving signal (Squre waveform: 50H.z)

To turn on and off the control relay (RL2): The Squre waveform voltage (50 Hz) is delivered to the control relay control circuit and cook relay control circuit.

20 msec.

Durinq cookinq

08

OUT

Magnetron high-voltage circurt driving signai. To turn on and off the cook relay (RLI )

In HIGH operatron, the signals holds “H” level during microwave eooklng and “L” level while not cooking. In other cooking modes (MED HIGH, MED, MED LOW, LOW) the signal turns to

“H” level and “L” level in repetition according io

the power level.

HIGH

MED HIGH

MED

GND

MED LOW

ON

,

I

GND

LOW

32 sec.

6 07 OUT

Timing signal output terminal for temperature measurement and thermistor open judgement. (R-9450 only)

“H” level (GND): Temperature measuring timing. “L” level (-6.2V): Termistor OPEN judging timing.

40

R-9320

%!50 R

I

Pin No.

Signal I/O 1

Description

7

D6

IN

To input a signal which communicates the door open/close information to LSI. Door closed : “H” level signal (OV)

Door opened:

“L” level signal (-32V)

8

D5

OUT 1

Digit selection signal.

The relation between digit signal and digit are as follows:

Digit Signal

Digit

DO.. . . . . . . . 1 st

Dl . . . . . . . . . .2nd

02 . . . . . . . . . .3rd

1 met.

03 . . . . . . . . . .4th

04 . . . . . . . . . .5th

D5

D5.. . . . . . . . , . 6th

Normally, one pulse is output in

~ _____ ---G::

every 13 period, and input the grid of Fluorescent Display.

D4n

9

D4

10

D3

02

11

Dl

12

13

DO

DO a---- ‘1;”

1 msec.

L

14

FO

IN

Terminal to change the functions according to the Models. Signal in accordance with the Model in operation is applied to set up its function.

Signal Input level

FO . . . . . . . . , . . , . “H”

Fl . . . . . . . . . . . . . “L”

F2 , . . . . . . . . . . . . “L”

F3 . . . . . . . . . . . , . “L”

“H”:

Connected to GND.

“L” : Connected to Vp (--32V) by pull-down resistor of internal LSI.

15

Fl

IN

Signal similar to FO.

16

vss

IN

Connected to GND.

17

F2

IN

18 F3 IN

+

I

Sianal similar to FO.

Signal similar to FO.

41

!O L

Pin No.

Signal

I/O

Description

19

uo

NC

Terminal not used.

20

OUT

Segment data signals.

OUT /

The relation between signals and segments are as follows:

7

OUT 1

Signal Segment

SO . . . . . . . a

-

Sl . . . . . . . b

I

s2 . . . . . . . .c

ITI IE$ AT/ )\;r/ ‘/j\%/b

I ,

S3 . . . . . . . .d

Ir\l IRI I+/ I\/ elB/c

/

cl

!

S4 . . . . .e

I

s5 . . . , . . . .f

1.3 mS

Ul

u2 21

22

u3

S6 .......

.g

S7

....... .h

U3

....... i

U2

....... j

Ul

....... k

---

a. DEFROST

GND

Ul -u3

5. SE.NSOR

c. TEMP.

~~:nzn~ / j 32v

1.2 mS

Ul -u3

‘----GND

SENSOR

R-9450 only

TEMP.

I? 9450 only

1

so - S6 Segment

I I

SighI 1 32V

23 GO

OUT

Signal for lighting of Lower Indicators. Normally signal similar Vp.

Pulse signals are generated when lighting either Indicator.

1.2 met.

.

Gl

w-_-e GND

-32V

24

OUT

Signal for lighting of power level and COMPU indicators. Normally signal similar Vp.

Pulse signals are generated when lighting either indicator,

1.2 msc.

----- GND

-32V

G2

NC

Terminal not used.

25

26

G3

NC

IN Auto-clear terminal.

27

RESET

Signal 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.

42

R-9320 R-9450

Signal

I/O

Description

Pin No.

28

29

30

31

OUT

QO

Ql

Key strobe signal. Signal applied to touch-key section.

A pulse signal is generated while 4, 7,

being touched.

OUT

Key strobe signal. Signal applied to touch-key section.

A pulse signal is generated whiie 5,8, -1 or /

1 key is being touched.

4

Q2

OUT

Key strobe signal.

Signal applied to touch-key section.

A pulse signal is generated while 6, 9, (ml or i

] key is being

5

touched.

Q3

OUT

Not used. Test mode strobe signal.

32 vss

IN

Connected to GND.

33

T

OUT

Signal to sound buzzer. A: Key touch sound.

B: Completion sound.

C: Sound with the turnover temperature by sensor temperature cooking.

0.1 sec.

A:

1

1 sec.1 sec.

-4

r

.

1

,A-l-

T 400x10-‘

- 2.5 kHz

34

PO

OUT

Key strobe signal.

Signal applied to touch-key section.

A pulse signal is generated while 0, pi,

key is being touched.

: R-9450 only)

35 Pl

OUT

Key strobe signal.

Signal applied to touch-key section.

A pulse signal is generated while 1,

key is being touched.

: R-9450 only 1

43

In No.

Signal

36

P2

l/O

OUT

Description

.Key strobe signal.

Signal applied to touch-key section.

/ j DEFROST /

A pulse signal is generated while 2, m, m or ;

: 1

i

key is being touched.

37

P3

OUT Key strobe signal.

Signal applied to touch-key section.

A pulse signal is generated while 3, ISToP IMED] or [

/

key is being touched.

38

NC

39

VREF

NC

IN

Terminal not used.

Reference voltage input terminal

A reference voltage applred to the A/D converter In the LSI The reference voltage IS generally maintained at -6.2V.

40 KO

IN I

Signal coming from touch-key. When either one of 6, 5, 4, 3, 2, 1, or 0 key is touched, a corresponding signal out

of QO - Q2 and PO - P3 will be input into KO. When no key is touched, the signal is held at “L” level i-l 2Vi.

41

Kl

IN

Signal similar to KO.

I j TEMP

When either one of 9, 8, 7, STOP, (CLEAR;, i (“C)

or ‘START

key is touched, a crresponding signal will be input into KI.

; : R-9450 only).

42

K2

IN

Signal similar to KO. When either one of m, j,

I

1

b=-j , j M. HIGH;,

key is touched, a crresponding signal will be input

in to K2.

43 K3

IN

Signal similar to KO

When either one of

,

F] , E! or m] key is touched, a crresponding

signal will be input into K3.

: R-9450 only)

K4

IN

Temperature measurement input

By inputting DC voltage corresponding to the temperature detected by the temperature probe, this input is converted into temperature by the A/D converter in

which LSI is built in.

45

K5

46 K6

IN

Terminal to change the functions according to the Models.

By using the A/D converter contained in the LSI (IX2321YA), DC voltage In

accordance with the Model in operation is applied to set up Its function.

44

Pin. No. Signal

Description

I/O

IN

47

K7

48

49

AVss

vss

50 NC

Signal synchronized with commercial source frequency

This’ IS the basic timing for time processing of LSI (I-1 : iX2321YA).

~ ~-----_

Approx. 20 msec.

I

1

IN Connected to GND.

IN

NC

Terminal not used.

IN 1

Power source voltage: -12V.

/ I

Voltage of power source circuit is input.

51

VDD

52

VP

IN

Anode (segment) of Fluorescent Display light-up voltage: -32V. Vp voltage of powel source circuit is input.

53

IN

Connected to GND.

INT

CNVss

54

/

IN /

55

/

OUT /

Segment data signals.

Signal similar to Ul.

so

Sl

56

s2

s3

s4

57

58

59

60

s5 OUT

61

S6

OUT

62

s7

OUT

XOUT OUT

Internal clock oscillation frequency control output.

63

64

Output to control oscillation input of XIN.

XIN IN Internal clock oscillation frequency setting input.

The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to XOUT terminal.

45

POWER SOURCE CIRCUIT

The voltage VF2 (-22 V) is resulted from the followtng

A power of AC 240 V passes through the filter circuit (Ll)

and is applied to the primary winding of transformer (Tl ).

equation :

The output voltage of the secondary winding of transformer

(Tl) is then full-wave rectified by the diode bridge (Dl - D4) and smoothed by the electrolytic capacitor (C2) to become

DC voltage Vp (-32V).

vF2 (V) = VZDl + VZD3 + VZD4 - VBE ial)

Then the voltage Vp is delivered to the constant voltage ctrcuit

made up of transistor 01 and zener diodes ZDl, ZD3 and

ZD4 where it is made into VF~ (-22V).

VDD (-12V) is a voltage to be applied to the LSI and it de-

pends on the zener diode ZD3 and ZD4.

(VFl-

VF2) refers to a voltage to be applied to the heater of the display tube and it is obtained from the followrng equatron:

(VFl

-vF2) = (il + 12) X Rf

In which, Rf is the heater’s resistor and 11 and i2 are load currents caused by the resrstors R9 and R8 located In the heater, Thus the heater’s voltage (VFJ-VF~) IS specified at

3.5v.

the transistor Ql to have a part of the current running In Ql

be by-oassed: this results In a

reduction of the current con-

sumptlon of this transistor.

Ltkewlse, resistor R6 leads to a

ruduction of the current consumption of zener diode ZD3 and

Resistor R7 IS provrded between the collector and emitter of

ZD4. Cl and C5 are noise by-pass capacitors.

VRSl

240V

50Hz

11

D2 d !hDl

it

D4

l-

D5 R’

r T

T

R6

c5

+ c4

ZD4

R8

ZD3

Lmo

T

GIN D

VREF (-6.2V I

I

._ /

T

VDD (--12V)

- !2

I

t

-i1 ,

----~--VW (-18.5V)

R2

8

4

Rc

,

, DC, 3.5V

I I I

i

-----I -vF2 (-22v)

Ql

tz c3

Rf: HEATER OF

+

R7

FLUORESCENT DISPLAY TUBE

m

I

Vp (-32V)

Figure 10. Power Source Circuit

46

At the secondary side of the power source circuit there is

to K7 terminal of LSI. This voltage is referred to as a power

caused AC half-wave rectified voltage and it is applied via R4

sync. signal.

I3 CIRCUIT

RZ

.

/From

Power Source Circuit

R4

K7

\

R3

C6

LSI

i

/

f-1

~--GND

I

20 msec.

I

t=

4

I

Figure 11. & Circuit and Waveform

ACL CIRCUIT

Just when the power switch is turned on, this circuit operates to reset the LSI to its initial state. with the power switch turned on, the voltage Vp starts to rise up and other two voltages VDD and VRES are resulted from this voltage: Fig. 12 shows the relation among these three voltages.

When VDD is high enough to keep the LSI in operation, if the voltage higher than VII-I is applied to the RESET terminal of

LSI, the LSI is reset to its initial state.

GND

VP

R9 HEATER OF

FLUORESCENT DISPLAY TUBE

$

ZD2

c7

LSI

RESETi ”

I ’

Operating area

VIH (High level input voltage)

-

vp (-32VI

Figure 12. ACL Circuit

47

R-9320 R-9450

BUZZER CIRCUIT

The square waveform developed from T terminai of LSI is applied to the base of Q6 to turn on and off Q6, and square

waveform voltage (2.5 kHz) is applied to SPl to generate buzzer sound.

Cl6

r

---------

1

T

SPl

GND

200usec. 1 200usec.

I

Figure 13. Buzzer Circuit

RELAY CIRCUIT

While the unit is in cooking, “H” level signal is produced

on the control relay (R L2).

at 08 terminal of LSI and also a pulse signal at D9 terminal

The “f-i” level signal from D8 terminal is applied to Q2 which

of LSI. The pulse signal from D9 terminal is applied to the

rectifier circuit made up of 082 and 083 where it is made

is connected in series with 03, and current i2 is caused only

when both 02 and Q3 are turned on at a time and it allows

into DC signal to charge C81. With C81 charged up, Q4 and

Q3 turn on in succssion so that a current il is caused to turn

the cook relay (RLl) to turn on.

240V 50Hz

RLl

I

Tl

i

ID5 Rl

I

Figure 14. Relay Circuit

48

R-9320

R-9450

TEMPERATURE MEASUREMENT CIRCUIT (On R-9450 Alone)

Fig. 15 shows the temperature measurement circuit. The

thermistor in the temperature probe varies in resistance according to the cooking temperature and this variation is converted to analog voltage variation to be delivered to the K4 terminal of LSI which contains an A/D converter. In the LSI

there are produced “H” level signal and “L” level signal at its

output terminal D7, as shown in Fig. 16.

When the output signal of the terminal D7 is at “H” level, the

transistor Q5 turns on to get R62 shorted, and the circuit

equivalent to that shown in Fig. 17-(a) is set up. With this

equivalent circuit in operation, the LSI can perform the tem-

perature measurement through the temperature probe.

When the output signal of the terminal D7 is at “L” level, the transistor Q5 turns off to get R62 and R61 connected in series with each other, and the circuit equivalent to that shown in

Fig. 17-(b) is set up. With this equivalent circuit in operation,

.

the LSI judges whether the temperature probe is opened or not: that is, when the temperature probe is opened, the

voltage almost equal to VREF/~ is applied to the K4 terminal

of LSI; when it is not opened (at its normal state), the voltage lower than VREF/~ is applied thereto. With the temperature probe opened, the temperature indicator and numeral indi-

cator flash to indicate this state.

TEMP. PROBE

LSI

Figure 15. Temperature Measurement Circuit

“H”

t

GND

i Judge)

(Temp. Measurement)

I I I I

Figure 16. Signal Output Timing at 08 Terminal

;yk- K4 (To LSI, v;Tb-- K4 (To Lsl)

(a) D7 terminal “H”

lb) D7 terminal “I-‘*

Figure 17. Circuit Equivalent to Temperature Measurement Circuit

49

KEi

m

INDICATOR CIRCUIT

Method of Display

Indicator element is Fluorescent Display.

Basically, a Fluorescent Display is a triode having a cathode,

a grid and an anode. Usually, the cathode of Fluorescent

Display is directly heated and the filament serves as cathode. When a proper voltage is impressed to the filament to heat It, thermo-electrons are emitted and, with positive voltage with respect to filament being applied to the anode and grid, hit against the anode to illuminate the fluorescent body. If the anode or grid voltage is zero or negative against the fiiament, thermo-electrons can not reach the anode, hence the fluorescent body is not luminescent.

in this model, the Fluorescent Display &digits, 1 l-segments

are used for displaying figures.

The Fluorescent Display employs the dynamic drive method, when the high level of anode signal and grid signal agree, the corresponding segment displays.

u7 S6 S5 s4 s3

z: so

LSI

D5

D4 03

02

01

DO

‘Gi

SO - S7, Ul - U3 (a - k)

i-1 8.5V 1

(-22v 1

C VP i-32V)

The following signals are responsible for specifying segments.

Segment

Signal

Segment Signal

a

so

COMPU

Gl

b

Sl

MED

Gl

C

s2 LOW

Gl

9

s6

h

I S’

i

I

/ i u3 +

j

u2

k

! U-l

I

J

DEFROST

so

SENSOR

Sl

TEMP

s2

COOK

GO

AUTO

GO

Kg

1 GO j

Figure 18. Indicator Circuit

(SENSOR, TEMP: R-9450 only)

50

EG

s

SERVICING

1.

Precautions for Handling Electronic Components

This unit uses PMOS LSI in the integral part of the circuits.

When handling these parts, the following precautions

should be strictly followed.

PMOS LSI have extremely high impedance at its input and output terminals. For this reason, it is easily influenced by the surrounding high voltage power source, static electricity

charged in clothes, etc, and sometimes it is not fully pro-

tected by the built-in protection circuit. In order to protect PMOS LSI.

1) When storing and transporting, thoroughly wrap them in aluminum foil. Also wrap PW boards containing them In aluminium foil.

2) When soldering, ground the technician as shown in ?he figure and use grounded soldering Iron and work table.

. .

, approx.

6

k

R

2. Shapes of Electronic Components

Transistor DTC114A

Transistor

2SD1228

lMi2

Transistor

2SA715

3. Servicing of Touch Control Panel

We here describe the procedures to permit servicing the

touch control panel of the microwave oven and thecautions

you must consider when doing it. To carry out the servicing, power supply to the touch control panel is available either from the power line of the

oven or from an external power source.

(1) In the case of servicing the touch control panel with

power supply from the oven: CAUTION;

IN THIS CASE, THE HIGH TENSION TRANSFORMER OF THE MICROWAVE OVEN IS STILL ALIVE TO GIVE YOU DANGER DURING THE SERVICING.

[Therefore, when checking the performance of the

touch control panel, put the outer cabinet on the oven

proper to keep you free from touching the high tension transformer, or unplug the primary terminal (connector) of the high tension transformer to turn it off; and besides the end of such connector shall be insulated with

an insulating tape. After the servicing, be sure to replace the’ieads to where they have been located before.]

A. For some models, the power supply cord between the

touch control panel and the &en is so short that they can’t be separated from each other.

For those models, therefore, check and repair ail the controls (with the sensor-related ones included) of

the touch control panel while keeping it in contact with the oven.

6. For some models, the power supply cord between the

touch control panel and the oven is long enough that they may be separated from each other. For those models, therefore, it is allowed to check and repair the controls of the touch control panel while keeping it

apart from the oven;

in this case it is needed to short

both ends of the stop switch (on PWB) of the touch control panel with a lead or the like, which brings about such an operational state that rs equivaient to that with the oven door being closed.

With the touch control panel apart from the oven, however, it is not possible to check the sensorrelated controls of the touch control panel.

(2) In the case of servicing the touch control panel with

power supply from an external power source: Disconnect the touch control panel completely from the

oven,

and short both ends of the stop switch (on

PWB) of the touch control panel, which brings about

such an operational state that is equivalent to that with

the oven door being closed. And connect an external

power source to the power input terminal of the touch control panel, and then it is allowed to check and repair

the controls of the touch control panel.

4. Servicing Tools

Following tools are required when servicing the touch

control panel assembly .

1) Soldering: 30W

(To prevent leaking current, it is recommended to use

a soldering iron with grounding terminal.)

2) Oscilloscope: Single beam, frequency range: DC 1 OMHz type or more advanced model

3) Others:

Other tools

5. Other Precautions

1) When turning on the power source of the control unit, remove the aluminum foil applied foi preventing static

electricity.

2) Connect the connectors of the indicator and key units to the control unit taking care that the lead wires are not

twisted.

3) After aluminum foil is removed, take extra care that abnormal voltage due to static electricity etc. is not applied to the input or output terminals.

4) Attach connectors, electrolytic capacitors, etc. to PW board, taking care that all connections are tight.

5) Be sure to use specified components where high precision is required.

51

R-9320 R-9450

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURES

WARNING: to avoid possible exposure to microwave energy; A. Before operating the oven;

1. Make sure that unlatching the door slowly is accompanied by a click indicating actuation of the latch switches.

2. There is a broken door hinge or support.

3. The door gasket or seal is damaged.

4. The door is bent or warped.

5. There is any defective parts in the interlock, oven door or microwave generating and transmission assembly.

2. Check visually the door seal for arcing and/or damage.

6. There is any other visible damage to the oven.

8. Do not operate the oven until after repair if any of the

C. Do not operate the oven;

following conditions exist;

1. Without the RF gasket.

1. Door does not close firmly against the front of

2. If the waveguide and oven cavity are not intact.

appliance.

3. If the door is not closed.

OUTER CASE REMOVAL

To remove the outer case, refer to Figure 19 and proceed as

3. Slide the entire case back about 3cm to free it from

follows:

retaining clips on the cavity face plate.

1. Disconnect the oven from the power supply.

4. Lift the entire case from the unit.

2. Remove the screws from the rear and along the side

CAUTION: DISCHARGE THE HIGH VOLTAGE CAPA-

edge of the case.

CITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

HIGH VOLTAGE COMPONENTS REMOVAL

(High Voltage Capacitor and Rectifier)

To remove the components, proceed as follows.

4. Remove the single (1) screw holding the capacitor holder

1. Disconnect the oven from the power supply and remove

to the mounting bracket, and remove the capacitor

the outer case.

holder.

2. Discharge the high voltage capacitor.

5. Now, the capacitor and rectifier are free.

3. Disconnect the wire leads from the high voltage capaci-

CAUTION:

WHEN REPLACING THE RECTIFIER,

tor.

THE EARTH SIDE TERMINAL MUST

BE SECURED FIRMLY WITH A EARTHING SCREW.

POWER TRANSFORMER 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 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.

COOK RELAY AND CONTROL RELAY 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 cook relay and control relay.

4. Remove the single (1) screw holding the relay angle to the base cabinet (A).

5. Slide the relay angle backward and remove it.

6. Now, the cook relay and control relay are free.

OVEN LAMP REMOVAL

1. Disconnect the oven from the power supply.

2. Loosen the

screw to

open

then remove

the oven lamp.

the lamp access

cover, and

52

R-9320 R-9450

OVEN LAMP ACCESS COVER-

REAR CABINET,

BASE CABINET (B)

OUTER CASE

CABINET

I 1

,

/F

yN& SUPPLY

CORDHOLDER

r

,HIGH VOLTAGE CAPACITOR

I

BASE CABINET bi)

-

‘1 I

RELAY Ai:& ‘7 \

CAPACITOR HOLDE

CONTROL RELA

COOK RELA

\

POWER TRANSFORMER

Figure 19. Outer Case and Chassis Components

53

R-9320

TURNTABLE MOTOR REMOVAL

1. Disconnect the oven from the power supply.

2. Remove the six (6) screws holding the base cabinet (8) to the oven cavity and rear cabinet.

3. Shift the base cabinet (B) to the left to release the tab of the base cabinet (B) from the base cabinet (A).

4. Remove the base cabinet (B).

6. Remove the four (4) screws holding the turntable motor

mounting plate to the oven cavity bottom.

6. Disconnect the wire leads from the turntable motor.

7. Remove the four (4) screws holding the turntable motor

to the mounting plate. The motor is now free.

TURNTABLE ROLLER REMOVAL

1. Disconnect the oven from the power supply and remove

the outer case.

Turntable roller

Oven cavtty

2. Discharge the high voltage capacitor.

3. Remove the six (6) screws holding the base cabinet (B)

to the oven cavity and rear cabinet.

4. Remove the turntable roller cover.

5. Pull off the turntable roller shaft.

Re-installing

’ Roller cover

1.

2.

3.

Set the turntable roller in place.

Insert the turntable roller shaft into the turntable roller through the hole. Carefully attached the roller cover, refer to Figure 20.

FAN MOTOR REMOVAL

1.

2.

3.

4.

5.

Disconnect the oven from the power supply and remove

6. Remove the duct (A) with the fan motor attached from

the outer case.

the unit.

Discharge the high voltage capacitor.

7. Remove the fan blade from the fan motor shaft by pull-

Disconnect the wire leads from the fan motor.

ing the fan retainer clip.

Remove the three (3) screws holding the chassis support

8. Remove the two (2) screws and nuts holding the fan

to the rear cabinet, cooling duct (A) and control panel

motor to the cooling duct (A).

back plate. .

The fan motor is now free.

Release the tab which is provided on the cooling duct

(B) to hold the cooling duct (A).

MAGNETRON REMOVAL

1.

2.

3.

4.

5.

6.

7

Disconnect the oven from the power suppluy and

the magnetron to the waveguide while supporting the

remove the outer case.

magnetron from below.

Discharge the high voltage capacitor.

8. Lower the magnetron assembly until the tube is clear of

Disconnect the wire leads from the magnetron and the

the waveguide.

magnetron temp. fuse.

9. Remove the magnetron temp. fuse and magnetron duct

Release the tab which is provided on the cooling duct

by loosening the mounting screws.

(B) to hold the cooling duct (A). CAUTION.

WHEN REPLACING THE MAGNETRON,

Remove the two (2) screws holding the cooling duct

BE SURE THE R.F. GASKET IS IN PLACE

(B) to the magnetron.

AND MOUNTING NUTS ARE TIGHTEN-

Remove the cooling duct (B) from the unit.

ED SECURELY.

. . Carefully loosen the four (4) mounting screws holding

Roller support

Figure 20. Turntable Roller Re-installing

54

R-9320 [ R-9450

OVEN PARTS

OVEN &

HINGE MOUNTI

NG

PLATE

\

TEMP. PROBE< (R-9450 ONLY)

OVEN LAMP

FILTER,

STEAM DUCT

TURNTABLE\\\ ,” w

- - --_

_--

. .

_A

-.

_-

. _

\

y,

-

.

* \

+

r

.-’

-- -

TURNiABLE

ROLLER SHA

/

TURNTABLE

TURNiABLE

ROLLER COVER

TRAY

,

H

TOR SPACER

Figure 21. Oven Cavit

55

3 -9320

RR.ts

?-9&O -

4M DUCT HION

MAGNETRON

,

;/c

-4

,J+

I

4

*

. *

r’

I

SLIP ;

CONNECTOR

(R-9450 ONLY)

9 ,

/

MAGNETRON

4 i\

/ MAGNETRON

-B

TEMP. FUSE

0

‘-

‘a

/

,TERMINAL COVER

HIGH VOLTAGE COVER

MAGNETRON COOLING

: J,l

Y

MAkNETRO;COOLING

DUCT (A)

‘\

>

I’

/

UPPER

L

ALE,

HOOK

iNG 8LY \

SPACER

LOWER LATC

9

HOOK

NH

UPPE-R

“.\

d

\

.

\

Yo

LOWER

.LATCH

TOR SWITCH

.ATCH SWITCH

CHASSIS

/SUPPORT

Yo

SWITCH

3NTABLE MOTOR

Oven Cavity Components

56

R-9320 R -$

UPPER LATCH SWITCH AND MONITOR SWITCH REMOVAL

R-9450 R-e

1. Disconnect the oven from the power supply and remove the outer case.

2. Discharge the high voltage capacitor.

3. Remove the complete control panel assembly, referring to the Control PaneC Assembly and Component Removal.

4. Disconnect the wire leads from the switches.

5. Remove the single (1) screw holding the upper latch hook to the oven cavity front flange.

6. Remove the upper latch hook from the flange by moving it downward.

7. To remove the switch from the upper latch hook, push outward the two (2) retaining tabs holding the switch in place.

LOWER LATCH SWITCH REMOVAL

I, Disconnect the oven from the power supply and remove

the outer case.

2. Discharge the high voltage capacitor.

3. Remove the complete control panel assembly, referring

5. Remove the single (1) screw holding the lower latch hook to the oven cavity front flange.

6. Remove the lower latch hook from the flange by moving

it downward.

to the Control Panel Assembly and Component Re-

7. Push outward the two (2) retaining tabs holding the

moval.

switch in place.

4. Disconnect the wire leads from the switch.

8. The switch is now free.

57

UPPER LATCH SWITCH, LOWER LATCH SWITCH AND

MONITOR SWITCH ADJUSTMENT

In case the upper and lower latch switches do not operate properly due to a misadjustment, the following adjustment should be taken.

1. Loosen the single (1) screw holding the upper latch hook to the oven cavity front flange and the single (1) screw

holding the lower latch hook to the same flange.

2. With the door closed, adjust tie lower latch hook by moving it back and forward, and then adjust the upper

latch hook by moving it back and forward, or up and down.

In and out play of the door allowed by the upper and

lower latch hooks should be less than 0.5mm. The vertical position of the upper latch hook should be placed where the upper latch switch has activated with

the door closed.

Vertical position of the lower latch hook is not able

to adjust.

3. Secure the screws with washers firmly.

4. N,ow, 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 upper latch hook position, pushing and pulling the upper portion of door toward the oven face. Then check the lower latch hook position, pushing and pulling the lower portion of door toward the oven face. Both results (plays of the door) should be less than 0.5mm.

2. The upper and lower latch switches interrupt the circuit before the door qan be opened.

3. The monitor switch contacts close when the door is

opened.

4. Re-install the outer case and check for microwave leakage around the door with an approved microwave

survey meter.

(Refer to Microwave Measurement Procedure.)

LATCH HOOK

ITOR CH

2?

LiPPER

‘\ .y,

LATCH

‘$4

SWITCH

‘31

LOWER LATCH

‘I

LOWER LATCH

SWITCH

Figure 22. Latch Switches Adjustment

58

R-9320 R-9450

CONTROL PANEL ASSEMBLY AND COMPONENTS REMOVAL

The complete control panel should be removed for replacement of the components. To remove the control panel, refer to Figure 12 and proceed as follows:

1. Disconnect the oven from the power supply and remove the outer case.

2. Discharge the high voltage capacitor.

3. Disconnect the 6-pin and 2-pin connectors from the control unit.

4. Remove the single (1) screw holding the control panel to the chassis support.

5. Remove the two (2) screws holding the bottom edge of the control panel to the base cabinet.

6. Remove the single (1 ) screw holding the control panel to

the oven cavity front flange.

7. Pull the control panel forward.

Feplacement of individual components is as foiiows:

CONTROL UNIT AND KEY UNIT

1. Disconnect the wire leads from the stop switch.

2. Remove the seven (7) screws holding the control panel back plate to the control panel assembly.

3. Disconnect the flat cable connector of the key unit from the control unit by opening the cable holder.

4. Separate the control panel frame and the back plate with control unit attached.

Control Unit

2. Slide the control unit upward and remove it to the back plate hooks.

1. Remove the three (3) screws holding the control unit to the back plate.

Key Unit

1. Remove the single (1 ) screw holding the key unit angle to the panel frame assembly.

2. Remove the key unit angle from the panel frame hooks.

3. Key unit is now free. Note: 1. When disconnect in the fiat cable of key unit from

the control unit, oull It carefully. Never do it forci bly.

2. When connecting the flat cable of key unit to the control unit, Insert it carefuily. Never damage the flat cable by the hook of connector lever.

11 -PIN CONNECTOR !B)

cnra KFV I iNiT i

CONTROL PANEL BACK PLATE

INSULATOR

I\

CONTROL PANEL

FRAME ASSEMBLY

,

1

,’

/

I

‘-’ OPENDEVICE

ASSEMBLY

&EN BUTTON

CONNECTOR (F) FOR TEMP.

N CONNECTOR (A)

-2.PIN WIRE LEAD (C) FOR STOP SWI

‘\

,,’

‘w’

1

CONTROL UNIT

‘,

K’EY UNIT ANGLE

/

KEY UNIT

‘.

TCH

Figure 23. Control Panel and Components

59

EEE

m

DOOR REPLACEMENT AND ADJUSTMENT

DOOR REPLACEMENT

1. Disconnect the oven power supply, remove the outer case and discharge the high voltage capacitor.

2. Remove the four (4) screws holding the door hinge to the oven cavity. The door assembly is now free from the oven cavity.

3. On reinstalling new door assembly, secure the door assembly with the four (4) mounting screws to the oven cavity. Make sure the door is parallel with the bottom line of the oven face plate and the latch heads pass through the latch holes correctly.

Note:

After any service to the door, and approved microwave survey meter should be used to assure in compliance with proper microwave radiation standards.

(Refer to Microwave Measurement Procedure.)

DOOR ADJUSTMENT

When removing and/or loosening hinge such as in the case of a door replacement, the following adjustment cri

teria are taken.

Door is adjusted to meet the following three

conditions by

keeping screws of hinge loose.

1.

2.

3

4

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. Deviation of the door alignment from the horizontal line

of the cavity face plate is to be less than 1 .Omm.

The door is positioned with its face depressed toward the

cavity face plate.

Reinstall the outer case and check the microwave leakage

around the door with an approved microwave survey meter.

(Refer to Microwave Measurement Procedure.)

TORX SCREW DRIVER

TOR X SCR EW

(SIZE T-20)

Figure 24. Torx Screw Driver and Torx Screw

OUTER CASE CABINET

HINGE MOUNTING PLATE

& I-

i

~

/

,//

/

‘/

c

\

/

OVEN FACE PLATE

Figure 25. Door Assembly Replacement and Adjustment

60

MICROWAVE MEASUREMENT

After the adjustment of door interlock switches and

door

is completed individually or collectively, the following le

akage

test must

must be performed wi

th a survey

instrument and

it

be confirmed that the

result meets

the requirements

of

the performance standard for microwave oven.

REQUIREMENT

The safety switch must prevent microwave radiation emission

in excess of 5mW/cm2 at any point 5cm or more from external

surface of the oven.

PREPARATION FOR THE TESTING:

Before beginning the actual test for leakage, proceed as follows;

1. Make sure that the test instrument is operating normally as specified in its instruction booklet.

Important: Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard for microwave ovens 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 initially at 20 i: 5’C in the centre of the oven tray. The water container should be a low form of 600ml beaker with inside diameter of approx. 8.5cm and made of an electrically nonconductive material such as glass or plastic. The placing of this standard load in the oven is important

not only to protect the oven, but also to insure that any leakage is measured accurately.

4. Close the door and turn the oven ON with the timer set for several minutes. If the water begins to boil before the survey is completed, replace it with 275ml of the cool

water.

5. Move the probe slowly (not faster than 2.5cm/sec.i along the gap.

6. The microwave radiation emission should be measured at any point of 5cm or more from the external surface of the oven.

61

*

BLU/l8 : j / BRN/l8

RED BRN OFIG

PNK ELK G-Y

IHYS

0

l

0

WIRE COLOUR CODE&SYMBOL

: RED

WHT : WHITE

: BROWN BLU

: BLUE

: ORANGE GRY

: GREY

: PINK

GRN : GREEN : BLACK : GREEN AND YELLOW STRIPE : HIGH VOLTAGE WIRE : SECTIONAL AREA OF 0.75mm’ MIN. : NO INDICATION SHOWS 0.3mm’ MIN. : QUICK CONNECT TERMINAL : SOLDER OR CLINCH TERMINAL : CONNECTOR

WHT

,

WHT/lIr

M2: TURNTABLE MOTOR

\ r----------- ----- 1

ORG/l8

h Y

7 T: POWER TRANSFORMER

D2:

WHT/l8

v

I

[NEUTRALI j 1ZiZ-j

f 4

i

li

b

I ,

6

t

! j

6

I r

)I

/

P

SW4: MONITOR SWITCH

WHT

oB

Ll,L2: OVEN LAMP

\ RED ’

GRY _

WHT ORG

/

w

SW1 : I

BRN ;w3 : ;TOP iWITCH

w

A3

B?+~B;+-f-j -I,

RLI: COOK RELAY

I ’ I

Ml: FAN MOTOR

I I

F: FUSE MIOA 240V

RED/IS

SW2: LOWER

LATCH SWITCH

ORG/l8

/ TF: MAGNETRON ,

TEMP FUSE

ORG/l8

SHORT PROTECTOR

r-,-y WHT “ii / 1 i

_-- -

i I

J

MG: MAGNETRON

Dl: RECTIFER

z-

Figure 26. Schematic Diagram (R-9320)

62

I 2 I 3 1 4 5 I / 6 1 7

,

CONTROL PANEL ASS’Y

GRY

OVEN LAMP

LATCH N-0 SWITCH - ORG

md---- !RED

’ RED

I

I I

+Gi+ 9X+ BORG]

1

I-

-------------------

1 CONTROL ! RELAY

If!!)

7 17

; 7

Lq

‘T I

1 I

TURNTABLE MOTOR

(A

IQo

I’ IS

I

r

i -i

/ ‘?I; OS/ Ib

$

L- ------_

i--iWHT’ I c--i BLK i&l

1

I I

, /

I

4

I I

;

41

,I, RED/-

--I 1 I

/ ; I I 1

j 1 I ’

’

/ !1

I j /BRN;

I ,

,

i

I i

I

c

pj BLK

r 1

I--, PNK p

i

BLU

/

I

c-3 I

I

Figure 27. Pictorial Diagram (R

I

1 i 2 3 4 6 6 7

63

:g

R-9320 R -9450

7

8

9

10

11

I

12

iGi?l-j

-i 1

I

-iii-J GiF,I? j

MAGNETRON TEMP.

FUSE

fl

!

Y-l

3RG

%-L j

--II

2

j

I j 1

I i

, I I

!

FAN MOTOR

:RY’+

F

‘HT

SHORT

PROTECTOR

I

t

2

1

I

[’

I’/

Q 1 POWER

TRANSFORMER

747

, -

WHT

- WHT-

WHT

BLU

HIGH VOLTAGE CAPACITOR

Diagram (R-9320)

I

/

7 !

8

I 9

1 10

I

11

12

64

1

2

I 3

1

4

5

6

I

:

1

i

I / /

:’

-! /

IN1

POWER SUPPLY

240v 50Hz

IL1

GND

CONTROL RELAY

COOK RELAY

STOP SWlTCri

VAS I

~

i

R-6

Di-0.3 IlEl IL

I 511 iw

02 DTC114A

r----

-1

2 2~150\’ ISS133

II

j

I

&

/

r

I

1

6-2

I

k

j+-

I I

q--

Ii/--

7

-

-&I

, I

1

B-3

?-

/ 1

R42

w R41

..* R43

R4C-vR46

33r x7

1 KEY UNIT/

q

I /

TEST MODE

Figure 28. Control PC

1

2

I

3

1

4

5

6

65

6

7

8

9 10

11

1

12

1

u

FLUORESCENT 3lSPLAY TUBE

21

r-------- ___--_ r----

r

-r----~___----_---~ D 4

I

COMPLi ME2 LOW Ml% t4Gi-l

/

1

vn -165"

t

/

I 1 I /

z

+ T;

I i !I

p fl

i / / I

~~

4 ,

ivn -22vi

5

I9 .I2 I5 19

i22 I

1

/

; I

1 /

1 iI

’ I

i b

, , / I j

i / I c

I ’

I I

/ I

I i

t

;--VW -6 2vi

I

I j

I I

’

/

I

0

! i

1 I

I/

!^o

56

j

1

;t 5

6C 55

t e

:

I

i 37

1: (Y

54

4

/ 1

I

/

36

I-35

m

52 I

c

1 ’

Si

b

’ * I

(1

/ 1

55 so

’

-Si

CNVrr t ; ,

INT H :.

i

a i

/ / I

- 30

, I

I

- F3

- yX232lYA iDp i

, j

w

i’ 15

- is*

I

F2 F3

‘(7 /

/ I I !

I

i i

! ;

’

“0

II-

--J 2c I -

~ J2

L- 113

GO

r---

q-n4zpx4

LT-T-T-TA

1. R47

6.6k

6 6;

06 DTCll4A

r-----1 7:9,4w

I 1 I

I RSO 6 Bk

I

TEST

NOTE A&--

MODE

IF NOT SPECIFIED, 1/5W, + 5%

‘3. Control Panel Circuit (R-9320)

i A

t-

ja

I !

r

/

ic

I

1

i

C

1

6

7 8

9 I

/ I

10 /

11

I

12

66

R-9320 R -9450

1

#

I

-

c)

A

1

Figure 29. Printed Wiring Board

67

R-9320 R-9450

WIRE COLOUR CODE 81 SYMBOL

RED : RED WHT : WHITE BRN : BROWN

BLU : BLUE ORG : ORANGE GRY : GREY PNK : PINK

GRN : GREEN

ELK : BLACK

G-Y :

GREEN AND YELLOW STRIPE

;“8

: HIGH VOLTAGE WIRE : SECTIONAL AREA OF 0.75mm’ MIN. : NO INDICATION SHOWS 0.3mm’ MIN.

0

: QUICK CONNECT TERMINAL

l :

SOLDER OR CLINCH TERMINAL

0

: CONNECTOR

D2:

WHT/lB

WHT/lS

SW4: MONITOR SWITCH

\ WHT

OB

Ll,L2: OVEN LAMP

~~~~~

ORN/18/ ORN/18/

+---c

RLl: COOK RELAY

I

\

Ml: FAN MOTOR

I I

I

M2: TURNTABLE MOTOR

ORG/18

,

Y

1 T: POWER TRANSFORMER I

I I

RED

F: FUSE MlOA 240V

RED/l8

SW2: LOWER

LATCH SWITCH

ORG/18

j TF: MAGNETRON I

TEMP FUSE

ORG/18

---:T(,R $%&- /--I-’

anurl I

PROTE(

MG:

MAyETRON

3

-_----

r

----- ---A I

Dl: RECTIFER

3-J

Figure 30. Schematic Diagram (R-9450)

68

;-;g; R-i

m

R-!

1

/ 2

3

I

4

5

6

I

7

I

SL’P

CONNECTOR

WHT

CONTROL PANEL ASS’Y

r

OVEN LAMP

/

I I

1 I I

c

f

T i

(BI

r-

-----------_--_~-_ 1 I-

I I I

/ i I

1 CONTROL f RELAY

COOK f j

RELAY , /

ill

/ / iy=T

/ TT

~

LILI

I j !

hj) 16

hTd

Q!

7

cl0

y :

j /I

f j

I

------

i

I

{ RED1

I

(FI

I I

I

2 II 0

j j j

3/ 0

: 4110 ’ 5 10

j6k

j )-J--J

7 1

!f-ll

I I I

ppiiq

1

,

I

TURNTABLE MOTOR

I

I /

i

--- BRN 1

I 1

/ !

I 1,

I i

- -

I

t

I I

I If

1

1 \ /BR+------

qBLU\

I

j /

Figure 31. Pictorial Diagram 4

1

1 r 2 3

4

I

5

6

7

69

R-9320

R -9450

7

I

8

9

I

.lO

r

11 1 12

1

MAGNETRON TEMP.

FUSE

?

I /

{0~G’ti i j

I !

I

FAN MOTOR

I

-

I 4 0

POWER

d TRANSFORMER

9

WHT ’

-, WHT -

SHORT PROTECTOR

HIGH VOLTAGE

CAPACITOR

I

BRN 11

il

doriai Diagram (R-9450)

7 I

/

8 I 9 I

10

I

1

11 I 12

70

R-9320

R -9450

A

B

C

D

E

F

G

H

1 2

3

I

4

1

5

\6

IN) [

POWER

SUPPLY 240V SOHZ

IL) [

GND

CONTROL RELAY

COOK RELAY

STOP SWITCH

LIII

TI

VRS I

LI

22yn

01-W IlEl x4

ZD3,2D4

HZ6C-2 x2

JW

FI

DS RI

’ IlEl I 1/4W

I

I I

V :-32V

fi

R91

(0 ,R)

IOk l/4W a1.

c93

O.Oly /25V

R6 I.Sk IW

R40uR46

33k x7

COMPU

COMPU COMPU COMPU

INSTANT SENSOR

TEST MODE

Figure 32. COI

1 I 2 I

3

I

4

5

I

6

71

A

B

C

D

1

TEMP. PROBE

1

E

F

‘II II

‘I II

’ II

1.

“,,

R47

6.6k

*a.

R46

6.6k

G

I

1 CONTROL UNIT 1

NOTE

+ : IF NOT SPECIFIED, 1/5W, 2 5%

H

ntrol Panel Circuit (R-9450)

I

7

I

a I

n

I

rn I

I.

I

.-

72

R-9320

R-9450

PACKING AND ACCESSORIES

MICROWAVE OVEN

PLASTIC BAG

ISSPIKHOWSYBEOI\

PACKING ADD KIT (CPADBO157WRKO)

I

DOOR PROTECTION SHEET

(SPADPQ007Y BPO)

TRAY HOLDER

Cut into two parts when packing.

TUR

NTABLE TRAY

/ TURNTABLE STYROFOAM

(SPADP0213WREO)

PACKtNG CASE

R-9320:SPAKC1813WREO R-9450: SPAKC1812WREO

)

73

PARTS LIST

REF.NO. ’

PART NO.

DESCRIPTION Q’TY / CODE

ELECTRICAL PARTS

T-

,

/

Mains supply cord

AR AE AF AG AG AG AF AH AX BA AH

BN AY AS

AQ

BR

I- 1

QACCA0024WREO

l- 2

QFS-CQOOlYBEO

l- 3

QFSHD0019WREO

l- 4

QSW-M0163WREO

l- 5

QSW-MOlGlWREO

l- 6

QSW-M0162WREO

l- 7

RLMPTOOZlWREO

l- 8

QSoCL0055WREO

l- 9

RMoTE0158WREO

l-10

RMoTE0165WREO

l-11

QFS-T0023WREO

1-12

FV-MZ0142WRKO

1-13

RC-QZ0106WREO

1-14

RH-DZ0046WREO

1

1 1 1 1 1

2 2

1 1 1

1 1 1 1

1

+

T

I

i

1-15

RH-DZ0061WREO

Fuse (MlOA) Fuse holder Upper latch switch Lower latch switch Monitor switch

Oven lamp

Oven lamp socket Fan motor Turntable motor Magnetron temp. fuse

Magnetron High voltage capacitor Rectifier Short protector Power transformer Control relay

RTRN-0273WREO RRLY-OlllWREO RRLY-0

11 2WRE0 Cook relay

FCNCWO 0 2

7WRK 0

Slip connector (R-9450 only)

FDTCT 0

0 2 1WRK 0 Temperature probe assembly

(R-9450 only)

I--

1-16 1-17 1-18

1-19

l-20

1

AQ

1

AP

1

AT

1 AW

CABINET PARTS

2- 1

FDA I-C i 6 9WRY 0

Base cabinet (A)

1 ; AR

2- 2

FDAI-Cl70WRYO Base cabinet (B)

1 I AS

Rear ca blnet 1

i AS

Outer case cabinet 1

/ BC

2- 3

GoVNR0064WRWO

Oven lamp access cover 1 AF Oven lamp cushion (A)

1

AB AA AA AA AC

2- 6

PPACUOOOZYBPO

Oven lamp cushion (8)

2- 7 PCUSU01!2YBPO

Shading cushion (A)

2- 8

PCUSU0337WRPO

Shading cushion (B)

2- 9

LANGQO225WRWO

Cord mounting bracket

2-10 LBSHC0032WREO

Cord bushing

1 AB

2-11 L ST P P 0 0 0 8 Y B F 0

Cord anchorage (upper)

1 AC

2-12

L ST P P 0 0 0 9 Y B F 0 Cord anchorage (lower)

1 AC

2-13

LANGQO 2 5 5WRW0

Capactltor mounting bracket

1 AC

2-14

L BNDK 0 0 3 5WR P 0

Capacitor holder

1 AB

2-15

GLEGP0018WRFO Foot

4 AA

Note The parts marked

“%” are used In voltage more than 250V.

74

R-9320 R-9450

REF.NO.

PART NO.

-7

DESCRIPTION

1 Q’TY

, CODE

*

2-16

LHLDK0005YBFA

Cord holder

1 AB

2-17

PCAS-0017WRFA

Plug case

1 AD

2-18 PSPAGQ002YBEO

Vibratton proof

cusnion

1 AA

2-19

PCOVP0067YBZO Edgecover

1 AB

2-20 LANGQ0326WRWO

Relay angle

1 AC

2-21 : TMAPCO 6 0 8WRR0

Schematic diagram

(R-9320)

1 AB

TMAPCO 6 0 7WRR 0

Schematic diagram

(R-9450)

1 AS

CONTROL PANEL PARTS

3- 1 CPWBF 0 8 5 SWRK 0

Control unit (R-9320)

1 BS

CPWBF 0 8 6 SWRK 0

Control unit (R-9450)

1 BT

3- 1A ,QPLGJ2259YAZZ

5-pInconnector

1 AD

3- 1B lQPLGJ2164YAZZ

11-plnconnector(B)

1 AF

3-1c

QCNCM2 2 10 YAZZ

2-pin wire iead (C) for stop switch

1

AE

3- 1D

QPLGJ2217YAZZ 2-pin connector (Fj ' for temp. probe (R-9450 only)

1

AB

3- 1E QPLGJ2299YAZZ

2-pInconnector

1 AA

3- 1F RV-KX2 0 4 4YAZZ

Fluorescent display tube

1 AX

3- 1G

LANGT2006YAZZ Display tube holder

1 AD

Cl

VCQYDUlHW104J Capacitor

O.lpF

5ov 1 AC

c2

VCEAAUlHW108M Capacitor

1000/lF 5ov 1

AG

C3 ~VCEAAUlEW337M Capacitor

330p F 25V 1

AD

c4

lVCEAAUlEW476M Capacitor

47/.i F 25V

/

1 I AB

C5,C6,

'VCKYATlEXlO3N Capacitor

O.Ol,uF

25V

4 / / AA

C8,C93 1 I

C7, C83 / VCQYCUlHM473K

: Capacitor 0.047pF

5ov

2 / AB

c40

/RMPTE2003YAZZ / Capacitoraray470pFX4

C60 ’

1 i AD

VCKYATlEX103N i Capacitor O.Ol,uF 25V (R-9450 only)

1

/ AA

C80 VCEAAU 1 HW4 7 4M

’ Capacitor 0.047pF

5ov

1 1 , AA

C81 VCEAAU 1 HW2 2 5M

Capacitor 2.2pF

5ov

1 1 I AA

c90

VCCCPRlH3680J Capacitor

68pF 5ov 1

/ AA

c91 VCCCPR 1 H3 18 1 J

I

Capacitor 18OpF

5ov

1

RC R S-2 0 0 8 Y A Z Z I Ceramic filter 1 600kHz

j AB

CF90

I

1

j AF

,

Dl-5

VHDl 1 El/'///-l

!

Diode 1 llE1

I

5

I AB

D80, D81 / VHDlS 15 8 8//-l

Diode 1 lS1588

2 AA

082, D83

j VHDlSS13 3//-l Diode (lSS133) 2

AA

Fl QFS-A2OlOYAZZ Fuse 1

AF

I1 'RH-iX2321YAZZ LSI

1 AY

Ll RC I L F 0 0 5 OCEZZ

Filter COI/

1 AE

Ql V S 2 S A 7 1 5--B/-l

Transistor 1 2SA715B, C

/

1 AD

75

I

REF.NO. j

PART NO.

DESCRIPTION Q’TY

CODE (

Q2tQ6

VSDTC-1 14-A-l Transistor : DTC114A 2

AC

’ 43

V S 2 SD 1 2 2 8 MQ- 1 Transistor : 2SD1228MQ, R

1

Q4 I

: AC

V S 2 S A 9 3 7-S/-1 Transistor : 2SA937S, E, R

1 AB

Q5 I

: VSDTC-1 14-A-l Transistor: DTC114A

(R-9450 only) 1

1 AC

Rl : VRD-STZEF 1 RO J Resistor IL? 1/4w

1 I AA

R2

1 VRD-ST2EF392J j Resistor

3.9kfl 1/4w 1 AA

I

R3, R4

i VRD-ST2EF473 J 1 Resistor

47kn

1/4w

I I 2 AA

I

R5, R91

/ VRD-ST2 EF 10 3 J I Resistor

1OkR

1/4w

I

I 2 AA

I

R6

‘VRD-ST2EF272J Resistor

2.7ka 1/4w I 1 AA

R7

, VRS-FT3AB2 7 1 J Resistor 27Oa 1W

/ 1 AA

R8 VRS-FT3AB 15 2 J Resistor 1.5ki-I 1w

1 1 AA

I

R9

VRS-FT3AB 15 1 J I Resistor 150R 1w

I

1 AA

RlO

jVRD-STZEF152J / Resistor 1.5kR 1/4w 1 i AA

I

Rll,RlZ,

I !

VRD-STZDF 10 3 J Resistor 1OkR 1/5w

3 AA

/

R81

j / I

R13

, VRD-ST2DF 3 9 2 J Resistor 3.9kR 1/5w

1 I AA

R14

VRD-ST2DF5 6 2 J Resistor 5.6kR 1/5w

1 AA

R15

VRD-ST2DF243J Resistor 24kR 1/5w

1 AA

R20

VRD-ST2EF 10 2 J Resistor 1 kR 1/4w

1 AA

R2i : VRD-ST2EF 18 2 J Resistor 1.8kfl 1!4w

1 , AA

R40-46

VRD-ST2DF3 3 2 J Resistor 3.3kS1 1/5w

7 AA

R47 -50 ~VRD-ST2DF682J Resistor 6.8kR 1/5w 4 AA R60

VRD-ST2DF:03J Reststor 10kQ 1/5W (R-9450 only) 1 AA

R6i

RR-NZ597 IYAZZ Resistor

5.97kR(F) 1/5W (R-9450 only)

1 AA

R62

VRD-ST2DF434J

Resistor

430kR 1/5W (R-9450 only) 1 AA

R80 VRD-ST2DF!OPJ

Resistor

1kR 1/5w 1 AA

R82

VRD-ST2EF333 J Resistor 33kR

1/4w 1 AA

R83 VRD-Sl 2EF562J Resistor 5.6kR 1/4w 1 AA R84, R85 VRD-ST2EF 183 J Resistor 18kR

1/4w 2 AA

R90 VRD-ST2EF122J

Resistor

1.2kR

i/4W

1 AA

SPl

RALMB2002YAZZ Buzzer

1

AK

Tl

RTRNP2057YAZZ Transformer

1

AS

VRSl VHV4 50NR 15/-l Varlstor

1 AF

ZDl VHEHZ 11 B-l/-l

Zener diode (HZllB-1)

1

AB

ZD2 VHEHZ12B--2/-l

Zener diode (HZ12B-2) 1

AB

ZD3,ZD4 VHEHZ6C--2/‘/-l Zener diode (HZ6C-2)

2

AB

3- 2

CSW-KO 5 1 SWRK 0 Key unit (R-9320)

1 BA

C SW-K 0 5 2 SWR K 0 Key unit (R-9450)

1 BA

3- 3

FPNLCO 5 5 5WRK0 : Control panel frame

assembly (R-9320)

1 AW

76

R-9320 R-9450

I

REF.NO.

PART NO.

DESCRIPTION

j Q’TY

CODE f

F PN LC

0 5 5 4WR K 0 Control

panel frame

assembly (R-9450)

1 AW

/

3- 3A GMAD I 0 0 3 1 WR

F 0 Display

filter

1 AE

3- 4 F L EVF 0 13 4WRK 0

Open devrce assembly

1 AR

3- 4A QSW-MO I 5 9wR E 0

stop switch

1 AH

3- 46 PZETE0069WRPO

Insulator

1 AA

3- 5 J BTN-0 2 2 9WRV 0

Open button

1 AE

3- 6 LANGTO

3 3 OWRWO

Control panel back plate

1 AK

3- 7 LANGT03 0 3WRW0

Key unit angle

1

AG

OVEN PARTS

4- 1 DOVN-0 11 2WRTA

Oven cavity assembly (R-9320)

1 BN

DOV N-O 2 0 8WR T 0

Oven assembly (R-9450) cavity

1 BN

4- 2 NRoLPO 0 2 OWR i 0

Turntable roller

3 AE

4- 3 NSFTTO 0 5 4WRWO

Roller shaft

3 AA

I

4- 4 PCOVPO 2 0 4WRE3

Waveguide cover

1 AF

4- 5 PCLiCQOOlYBEQ

Clip

1 AA

4-6 j NTNT-0 0 3 6WR F 0

Turntable tray

1 AZ

I

4- 7 ~ FCPL-0 0 18WRK 0

Turntable coupling assembly

1 AS

4- 8 4- 9

iPFiLW0035WRPO

sFFANJ0017WRKO 4-9A / MSPRP0038YBEO 4-10 iLANGF0224WRPO 4-11 /LANGQ0186WRWO

I 4-12 jPSPAG0023WRFO

4-13 LANGK0140WRWO 4-14 LANGQ0254WRWO 4-15 PDUC-0246WRF0 4-16 PDUC-0247WRF0 4-17 FDUC-0116WRY0 4-17 A PCUSU0323WRPO 4-18 tPCUSU0242YBPO

4-19 PDUC-0242WRW0 4-20 PCUSU0298WRPO

4-21 LANGK0141WRFO

4-22 ,LANGK0142WRFO 4-23 /MLEVF0124WREO 4-24 IPCtiVP0265WRFO 4-25 I PZETV0049WRPO

Oven lamp filter

Fan blade assembly

Fan retainer clip Chassis support Turntable motor mounting plate

Motor spacer

Hinge mounting plate Oven lamp mounting plate

Magnetron cooling duct (A)

Magnetron cooling duct (B)

Magnetron duct

Magnetron duct cushion Cooling duct cushion

Steam duct

Steam cushion

Upper latch hook

Lower latch hook

Monitor switch lever Turntable roller cover

High voltage cover

1 AB 1 AE 1 AB

1 AE 1 AD

1

/ AB

I

1 : AC

,

1

/ AC

i 1

1 AE

1 1 AG 1 1 AE

I i IAA /

I 1

I

I AA

/ I 1

1 AE

/ 1

2

/ AA

, I

1 AF

1 AE 1

AC

3

AB

/

1 AD

4-26 ; PZETNOO 18WRE0 Terminal cover

1

AA

77

I

REF.NO. 1

PART NO.

DESCRIPTION Q’TY

CODE [

I

4-27

PSPAY0017WRPO T hermo spacer

1

AA I

DOOR PARTS

5

DDoRF0418WRKO Door assembly, complete

1 BT 1 ~ AE

5- 1 5- 2

5- 3 5- 4

FANGK0066WRYO Latch plate FLEVF0050WRYO

Joint lever LSTPP0035WRFO Upper latch head LSTPP0036WRFO Lower latch head MLEVP0031WRFO

Door lever MSPRT0059WREO Latch spring PC&/P0319WRFO Latch cover LX-BZ0143WREO Screw (torx) ; latch cover mtg

MISCELLANEOUS

AC AC AC

t

5- 5 5- 6 5- 7 5- 8

AC AC AH AA

QW-HZ0059WREO QW-HZ0068WREO QW-VZ0713WREO

FW-VZ0756WREO FW-VZ0755WREO

3% 6-l % 6-2

6- 3 6- 4

High voltage wire A (Trans.-Capa.) High voltage wire B (Msg.-Capa.)

1

’ AD

1 AE

Lamp lead 1

AC Main wire harness (R-9320) Maln wire harness (R-9450)

1 AW

1

AX

6-

5 TCADC0220WRRO

Cook book

6-

6 TINSE0394WRRO

Operation manual (R-9320)

TrNSE0404WRRO

Operation manual (R-9450)

6-

7 iSPCNOS20WRRO

Name plate (R-9320)

TSPCNC819WRRO

Name plate (R-9450)

AY

AF

AK

AB

AC

I

6- 8

TCAUHOil4WRRO

Cautron label 1

AC

SCREWS, NUTS, WASHERS AND RING

7-

i LX-B Z 0 1 4 1 WR E 0 Screw I monitor switch lever mtg

1 AA

7-

2 LX-BZOi55WREO Screw : lamp access cover mtg

1 AA

7-

3 LX-BZO 1 8 6WR E 0 Screw : magnetron coolrng duct (B): capacitor mounting

4 AA

bracket, capacitor holder and cord mounting bracket mtg

7-

4 LX-CZ 0 0 3 8WR E 0 Screw ; outer case cabinet

mtg

10 AA

7- 5 L X-CZ 0 0 4 7WR E 0 Screw ; control panel assembly, oven

cavity, base cabinet 6 AA

(A), base cabinet (B) and rear cabinet mtg

7- 6 LX-CZ 0 0 5 2WR E 0

Screw :

upper latch hook mtg

latch hook and lower

2 AA

7-

7

XB BUW3 0 P 0 8 0 0 0

Screw ; oven lamp mounting plate

mtg

2 AA

7-

8 XBPSD30P12KOO

Screw; fuse holder

mtg

1 AA

7- 9 XBPSD4 0 P 0 6 K 0 0

Screw : turntable coupling

mtg 3 AA

Note : The parts marked “%‘I are used in voltage more than 25OV.

78

-PART ~0.

DESCRIPTION

Q’TY

CODE

XB P S 04 0 K 0 8 K 0 0

Screw ; turntable motor mtg

4

AA

7-11 XBPSD40P25000 Screw: fan motor mtg

2

AA

7-12 XBPSD50PlOKOO

Screw:

magnetron mtg

4 AA

7-13 XBPSDGOP14KSO

Screw: power transformer mtg

2 AA

7-14

XB S S D4 0 P 1 2 0 0 0

Screw :

hinge mounttng

plate mtg

4 AA

7-15

XBTUW4

0 P 0 8 0 0 0 Screw :

turntable motor mounting plate and

slip connector

6 AA

(R-9450 only) mtg

7-16

XCP SD3 0 P 0 8 X

0 0 Screw :

control unit and control panel back

plate

mtg

5 AA

7-17 XCPSD3

OPO 8 0

0 0 Screw : oven iamp socket mtg

4 AA

7-18 XC P SD 4

0 P 1 0 0

0 0 Screw :

key unit angie and open device mtg

3 A A

7-19 XCP SD4 0 P 1 2 0

0 0 Screw 1

cotrol panel back plate mtg

5 AA 2 ,4 A 1 AA

11 A .4

7-20 7-21

7-22

XCPSD4OP27000 XCTSD40PlOOOO

XCTSD40P12000

Screw ; cord anchorage (upper) mtg Screw : cord ancnorage (lower) mtg

Screw ; control pane! assembly, oven cavtty, base cablne

(A), base zaolnet (B), rear cabinet and chassis support mtg

7-23 7-24 7-25 7-26

XCTSD40P16000 XFPSD30P06000

7-27

XFTSD40P12000

7-30

7-31

7-32

7-33

7-34

1

AA

2

AA

7-28

7-29

7-35 7-36

Screw : cord hoider mtg Screw 1 magnetron temp. fuse mtg

XFTSD4

0 PO 6 0

0 0 Screw ;

relay angle mtg

XFTSD40PlOOOO Screw; plug case mtg

1 AA 1

AA

LX-NZ0031YBEO

XNESD40-32000

LX-WZ0034WREO XWHNZ30-05060 XWHSD30-05000 XWHSD50-08000 XWSSD40-10000

XWwSD60-08000

XRESE25-04000

Screw T magnetron duct mtg

Nut ; lamp access cover mtg Nut : fan motor and earth wire mtg

Washer (square)

; outer case mtg

Washer ; lamp access cover mtg

2

AA

1 AA

3 AA 2

AA

1 ( AA

I

Washer ; lamp access cover mtg 1

AA

I

Washer ; monitor switch lever mtg Washer ; earth wire mtg Washer ; power tranformer mtg Ring ; lamp access cover mtg

1

1 AA

/ ’ 1 IAA

1

AA

/ 1 AA

R-9320 R -9450

1

HOW TO ORDER REPLACEMENT PARTS

To have you order filled promptly and correctly, please furnish the follwing information.

1. MODEL NUMBER 2. REF. NO.

3. PART NO. 4. DESCRIPTION

79

1 I 2 3 4 5

r

I 6

CABINET PARTS

a

2-3 --.,

IF

i-

I L

IH

I

1 2

3 4

5 6

80

EE F m F

1 2 3 I 4 5 6

r

7

I

OVEN

PARTS

a

4-13

\

.

-\

‘\

G$

\\ --’

3

\‘,’

k %

.-_/’ ,

i-/ ,I

e=%

. .

H L

i-’

--.a---- --

G%

-+y,.--;9dq &--+I

‘)A

j

1 I I 2 3

4 5 6

81

3-9320

:-z:

g-9450 -

/

7

8

9

10

11

12

1

/

,’

/’

A

,’

/

!

_-

/’

CD)

/

(GiGI

I

@,%,

‘%,. ‘\\ 4

\

fi

,@iD

I

(

/

:c

r

/ I

IE / / /

I

7

8

I

9

T

i 10 I 11 12

82

,

,,A

^--‘-A

CONTROL PANEL PARTS

,’

\

‘(

1 I 2 3 4 I 5

6

83

1 f 2 3 4 5 6

DOOR PARTS

I !C

I

it

i[

FdE:

m

7

5.

3

.

a

1

E

F

3

-I

/I

84

EE

m

FIXING PROCEDURE OF CORD ANCHORAGE

General: j

/

Content:

As for the above subject, sometime it may cause to have wrong fixing about two pieces of cord anchorage

unit. But this cord anchorage is an important part for the safety, therefore it must be fixed correctly and firmly.

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

LSTPPOOOgYBFO CORD ANCHORAGE (LOWER)

-w

C&D ANCHORAGE (UPPER) LSTPPOO08YBFO

3mm

Figure 1. Correct Fixing

Figure 2. Wrong Fixing

I

i

85

R -9320 R -9450

SHARI=

‘84 0 SHARP CORP. BNl.lE)

Printed in Japan