Sharp R-9320 User manual

SHARP SERVICE MANUAL
S8404R9320J//
MICROWAVE OVEN
R19320
MODELS R-9450
in the interests of user-safety the set shouid be restored to its originai
condition and only parts identical to those specified be used.
/ TABLE OF CONTENTS \
page
FOREWORD ....................................................................... ..t
CAUTION, MICROWAVE RADIATION. ..................................................... .l
THUMB INDEX ..................................................................... ..l
PRODUCT DESCRIPTION .............................................................. ..Z
OPERATING INSTRUCTIONS. ....................................................... .3 y 19
OPERATlON....................................................................20~2 7
SERVICING ..................................................................... 28-35
TOUCH CONTROLPANELASSEMBLY ................................................. 36 w 51
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURES ............................. 52 h 60
MICROWAVE MEASUREMENT .......................................................... .61
SCHEMATIC DIAGRAM (R-9320) ....................................................... 62
PICTORIAL DIAGRAM (R-9320) ...................................................... 6364
CONTROL PANEL CIRCUIT (R-9320) .................................................. 6566
PRINTED WIRING BOARD ............................................................ 67
SCHEMATIC DIAGRAM (R-9450) ....................................................... 68
PICTORIAL DIAGRAM (R-9450) ...................................................... 69,70
CONTROL PANEL CIRCUIT (R-9450) .................................................. 71,72
PACKING AND ACCESSORIES ......................................................... 73
PARTS LIST ................................................................. ..74-8 4
SHARP CORPORATION

R-9320
R-945Q

SERVICE MANUAL
SHARP
R-9320/R-9450
FOREWORD
This Manual has been prepared to provide Sharp Service
Personnel with complete Operation and Service Informa-
tion for the Sharp Microwave Ovens, R-9320/ R-9450.
It is recommended that service personnei carefully study
the entire text of this Manual so they will be qualified to
render satisfactory customer service.
CAUTION
MICROWAVE RADIATION
Personnel should not be exposed to the microwave
energy which may radiate from the magnetron or other
microwave generating devices if it is improperly used or
connected.
All input and output microwave connections, waveguides,
flanges, and gaskets must be secured.
Never operate the device without a microwave energy
absorbing load attached.
Never look into an open waveguide or antenna while the
device is energized.
SHARP CORPORATION
OSAKA, JAPAN
R-9320
R-94!5C
PRODUCT DESCRIPTION
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INSTRUCTIONS
*SERVICING
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TOUCH CONTROL
PANEL ASSEMBLY
*COMPONENT REPLACEMENT
AND ADJUSTMENT PROCEDURE-;
MICROWAVE MEASUREMENT
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PRODUCT DESCRIPTION
EXPLANATION OF MICROWAVE COOKING
The Sharp Microwave Oven uses microwave energy to Materials with a high moisture content, like most foods,
produce heat in the food to be cooked. Unlike will absorb microwave energy. As the microwave energy
conventional ovens microwave energy will cook foods at a frequency of 2450 Megahertz enters the food, the
without applying external heat. molecules align themselves with the energy. Because the
microwaves are changing polarity every half cycle, the food
Microwaves, which are short electromagnetic waves of molecules are changing direction every half cycle or oscil-
RF (radio .frequency) energy, pass through materials lating back and forth 4,900,000,000 times per second. This
such as glass, paper, china and most plastics. Materials high speed oscillation causes friction between the mole-
such as metal and aluminum foil tend to reflect micro- cules, thereby converting the microwave energy to heat.
waves and may be used only as recommended in the cook-
ing instructions.
SPECIFICATIONS
Power requirements
Power consumption
Microwave output power
Case dimensions
Width
Height
Depth
Cooking cavity dimensions
Width
Height
Depth
Turntable diameter
Control complement
Weight
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240V
50Hz
Single phase, 3 wire earthed
1.3kW
650W (2 litre water load)
627mm
400mm
458mm 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)

- R-9320
R-9450
OPERATING INSTRUCTIONS
..-_____
-.- _____ - --- _-- ~~~-.
OPERATION OF AUTO-TOUCHTMCONTROL 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”ControlPanel (R-9320)
p.__-__--___--
compu defrost, auto start, cook and kg.
Shows readout of cooking time, compu defrost operation or time of day.
COMPU DEFROST PADS
Touch to select compu defrost setting.
NUMBERING PADS
Touch to enter cooking times, clock time or weights of food.
PROGRAM SELECTOR PADS
Touch to set clock, auto start or timer.
VARIABLE COOKING CONTROL PADS
. If not touched, HIGH is automatically selected.
en during cooking.
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2-w Touch to erase during programming.
3- ~D*chol~
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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-0OPFY3ooFI COMPU DEFROST CHART
.- Foods cooked with compu defrost settings.

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s ! Auto-Touch’“Contro1 Panel ,(R-9450)
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lndrcator lrghts for variable cooking, temp, sensor temp, compu
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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
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Touch to enter cooking times, temperature settings, clock time
sensor temp settings or weight of food.
VARIABLE COOKING CONTROL PADS
Touch to select power setting. If not touched, HIGH is auto-
matically selected.
Touch to stop operation of oven during cooking.
CLEAR PAD
Touch to erase during programming.
-INSTANT COOK PAD
Touch to cook for 1 minute at HIGH or increase cooking time.
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PUbH TO OPEh DOOR
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COMPU DEFROST CHART
Foods cooked with compu defrost settings.
SENSOR TEMP CHART
Foods cooked with sensor temp settings.
---__-- ____
_~-------~...-

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CLOCKSETTING
This oven functions as a clock to keep the time of day. To set the clock, follow this procedure. When
oven is plugged in, the display will show [ss:83] and variable cooking indicators, flashing each
second. Touch the CLEAR pad; i::li-;‘z! will appear. After one minute the display will show
y---my .
* Suppose you want to enter the correct time of day 12:30 (A.M. or P.M.)
Procedure / Pad Order Display 1
1. Touch the AUTO START/CLOCK
pad. AllToslwT :
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j 2. Enter the correct time of day by - 1 ____-
I touching the numbers in sequence. 1 2 ~3 O:/
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I 3. Touch the AUTO START/CLOCK
pad again.
1 AuTosm?T /
i CLOCK i
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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
j88: 1’1381and 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. jTIMER
The timer will begin counting down to zero. When the timer reaches zero, the signal will sound. The
time of day will reappear on the display. To cancel the minute timer during operation, simply touch
the CLEAR pad and the time of day will reappear.

R-g450MICROWAVE 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:
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I MEL tiIGH 1 /
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3. Touch the START pad. STAFiT
MEC HIGH
2 I II
COOk
The cooking timer will count down to zero. When the timer reaches zero, all indicators will go out and
an audible signal will sound. The time of day will reappear on the display.
NOTE. If you accidentally touch the wrong variablecooking control pad, immediately touch the
correct pad. The last pad touched will be the setting the oven accepts. For example, if you
touch the MED HIGH pad and then immediately touch the MED pad, the oven will cook at
MED.

Multiple Sequence Cooking I(R-9320)
This oven can be programmed for up to 3 automatic cooking sequences, switching from one
variable power setting to another automatically.
Check the microwave recipe section of your Sharp Carousel Microwave Cookbook for ideas on
when to use multiple sequence cooking.
+ Suppose you want to roast beef for 5 minutes at HIGH, and continue to cook for 30 minutes at
MED HIGH.
Procedure Pad Order Display
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/ 1. Enter desired time for first cooking I
5 0 0 / I,- 1-i t-i
I sequence. ____ ____ ip -I 1-r i-1
/ 2. Select first variable cooking control HIGH j HIGH ‘-7 l-l r-j
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/ setting. 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
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~~___.~
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4. Select second variable cooking
control setting.
VEC HIGH ~-
M.HIGH ! ,7 I7 l-ir-i
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/----
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
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i/ -
-1 Cl l lJl-I I
I
When the timer reaches zero, all indicator lights will go out and an audible signal will sound. The
time of day will reappear on the display.
NOTE: If HIGH is selected as the final sequence, it is not necessary to touch the HIGH pad.
If HIGH is programmed as the first or second sequence, HIGH pad must be touched, even
though the HIGH indicator may already be lighted.
R-9320
R-945C
7

q-9320
?-9450 ---p-----
Multiple Sequence Cooking (R-9450)
This oven can be programmed for up to 3 automatic cooking sequences, switching from one variable
power setting to another automatically. The oven can also switch from one temperature setting to
another automatically, and it can maintain a specific temperature for up to 99 minutes.
Some of the sequences you might use in cooking include, for example as below.
I FIRST SEQUENCE / SECOND SEQUENCE ( THIRD SEQUENCE
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j Cook or Defrost by Time + Cook by Time i
1 Cook or Defrost by Time + Cook by Time Cook by Time
j Cook by Temperature Maintain Temperature
1 Cook by Temperature Cook by Temperature Maintain Temperature
/ Cook by Temperature Cook by Temperature Cook 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 (1st 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