Sharp R-9320, R-9450 Service Manual

Page 1
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
Page 2
R-9320 R-945Q
Page 3
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
J
I t
< - a, P.
? ’ c *,.
INSTRUCTIONS
* SERVICING
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TOUCH CONTROL PANEL ASSEMBLY
*COMPONENT REPLACEMENT
AND ADJUSTMENT PROCEDURE-;
MICROWAVE MEASUREMENT
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e-y&darr*r fr ,*
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i$.’ PARTS LIST
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Page 4
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
j-
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I
, I I
I i
j-
I
240V
50Hz Single phase, 3 wire earthed
1.3kW
650W (2 litre water load)
627mm 400mm 458mm
I
1
395mm 260mm 422mm
I ,
385mm
Start Pad, Stop Pad and Clear Pad
I
/
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)
Page 5
-
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.
I i
I-uma
/
2-w
Touch to erase during programming.
3 - ~D*chol~
i
,z.zz
-START PAD
/
\clmi..a
4 -- cmalLIc.wa
, -‘Pw.*cmu
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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.
Page 6
ZE
s
! Auto-Touch’“Contro1 Panel ,(R-9450)
--
i
---‘““:::“,“, start, ,,,k a”d kg.
lndrcator lrghts for variable cooking, temp, sensor temp, compu
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!I i ! /
COYU
YED LOW YE0 H&W
;;g: /g/jBjy/fyj-
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
I
I i
1 i
i 1
I
j / i i
ii
,
)i ~ I
I ~ I
-
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
I I
COMPU DEFROST CHART
Foods cooked with compu defrost settings.
SENSOR TEMP CHART
Foods cooked with sensor temp settings.
--- __-- ____
_~-------~...-
Page 7
EE:
m
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 :
/­, UCXK i
I
I
j 2. Enter the correct time of day by - 1
____-
I
touching the numbers in sequence.
1 2 ~3 O:/
~
------------------I
!
I /
I
I
I
3. Touch the AUTO START/CLOCK
pad again.
1 AuTosm?T /
i CLOCK i
I
l Zl l ,7 I-..
II- l J-s
I
I
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.
,I
I
r-i 17 1
-1
I,/ 1-r 1
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.
Page 8
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;
/ p-y
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
t -
2. Select desired variable cooking control setting.
M. HIGc:
I
I MEL
tiIGH
1 /
,i l/Z :
t . l-1 I
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.
Page 9
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
I
I ,I *
setting.
I
-1 9
l-1 1-f
1
I
3. Enter desired time for second cooking sequence.
____~~- 1
;3 0 0 0
,-, l-i 17 17
-I Cl
i-1 I,/
~~___.~
/
i
4. Select second variable cooking control setting.
VEC HIGH ~-
M.HIGH
!
,7 I7 l-i r-i
I
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
Page 10
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
L
I
f
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 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
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
Page 11
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
I
1 INSTANT COOK’
1
I
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.
Page 12
;-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
Page 13
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
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
Page 14
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
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
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
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
Page 15
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
Page 16
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
Page 17
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
Page 18
:-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
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
Page 19
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
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
/
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
I
Leftovers
i
60-70” C
I
I
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
Page 20
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
Page 21
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
I
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
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
Page 22
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
Page 23
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
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
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
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
Page 24
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
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
Page 25
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
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
Page 26
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
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
Page 27
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
OPEN
SUTTON DEVICE
Figure 4. Door Open Mechanism
25
Page 28
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
I /
t /
I
I
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
Page 29
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
Page 30
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
I
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.
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
Page 31
-
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
Page 32
? -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
Page 33
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
Page 34
TEST PROCEDURES (CONT’D)
PROCEDURE
LETTER
A
(Cont’d)
B
C
T
I-
! I
-!­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
Page 35
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
Page 36
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
Page 37
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
Page 38
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
Page 39
1 2
I
3
I 4 I
5
I
6
I
BLOCK DIAGI
A
1
1
“I, :-18.5”
1
POWER
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
I
I
RELAY CONTRCL CIRCUIT
AND COOK RELAY CONTROC CIRCUIT
--
I I
-
1
E
Figure 8. Block Diagram (R.
37
Page 40
7
I
8
I
9
I
10
I
11
I
12
;RAM
1
A
FLUORESCENT DISPLAY TUBE
I
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
Page 41
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
Page 42
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
Page 43
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
Page 44
!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
Page 45
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
Page 46
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
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
Page 47
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
Page 48
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
Page 49
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
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
Page 50
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
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
Page 51
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
Page 52
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
/ 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
Page 53
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
Page 54
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
Page 55
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
Page 56
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
Page 57
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
Page 58
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
Page 59
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
Page 60
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
Page 61
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
Page 62
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
Page 63
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
Page 64
*
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
Page 65
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
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
Page 66
: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
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
Page 67
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
Page 68
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
I
F2 F3
‘(7 /
/ I 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
Page 69
R-9320 R -9450
1
#
I
-
c)
A
1
Figure 29. Printed Wiring Board
67
Page 70
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
Page 71
;-;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
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
Page 72
R-9320
R-9320
R -9450
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
Page 73
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 COMPU
INSTANT SENSOR
TEST MODE
Figure 32. COI
1 I 2 I
3
I
4
5
I
6
71
Page 74
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
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
Page 75
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
Page 76
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
Page 77
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
Page 78
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
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
Page 79
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
I
1 : AC
,
1
/ AC
i 1
1 AE
1 1 AG 1 1 AE
I i IAA /
I 1
I
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
Page 80
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
Page 81
-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
Page 82
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
Page 83
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
Page 84
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
I
7
8
I
9
T
i 10 I 11 12
82
Page 85
,
,,A
^--‘-A
CONTROL PANEL PARTS
,’
\
\
‘(
1 I 2 3 4 I 5
6
83
Page 86
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
Page 87
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
Page 88
Page 89
R -9320 R -9450
SHARI=
‘84 0 SHARP CORP. BNl.lE)
Printed in Japan
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