Sharp R-9A52 User manual

R-m5i-j
R-SH52
SHARP SERVICE MANUAL
Sll 01 R9A52J//
CONVECTION
MICROWAVE OVEN
MODELS R-9A52
R-9H52
In interests of user-safety the oven should be restored to its original
condition and only manufacturer original spare parts must be used.
This is a supplemental Service Manual for Model R-9A52 etc.
Those models are quite similar to Base Model R-9HlO (Refer No. is S9808R9Hl OJ//).
Use this supplemental manual together with the Base Model Service Manual.
Refer to the Base Model Service Manual for complete operation, service information, etc.
TABLE OF CONTENTS
FOREWORD Page ......................................................................*................................................................................
CAUTION, MICROWAVE RADIATION 1
PRODUCT DESCRIPTION ............................*............................................*...*...............*............ 1
*..*.......*.......................................................*.............,.......,.....................................
OPERATING INSTRUCTIONS
WIRING DIAGRAM ......*...................*.................*....*..................................................,.....,.............. ;
COMPONENT .......................................................................................................................................... 5
REPLACEMENT AND ADJUSTMENT PROCEDURE
PICTORIAL DIAGRAM ........................................................ 7
........................
CONTROL PANEL ClRCUIT(R-9A52) ............................................................................................................. 9
CONTROL PANEL CIRCUIT(R-9H52) ......*......................*.......................................................................... IO
PARTS LIST ............................~.......................................................................... 11 ....................................................................................................................................................
PACKING AND ACCESSORIES 12 ........*................................~....................................................................*...* 18
SHARP CORPORATION

1
’R-9A52
R-9H52

R-SA52 4
R-SH52 1
SERVICE MANUAL
SHARP
COUNTER TOP
CONVECTION MICROWAVE OVEN
R-9A52/ R-9H52
GENERAL IMPORTANT INFORMATION
This Manual has been prepared to provide Sharp Corp. Service
engineers with Operation and Service Information.
It is recommended that service engineers carefully study the
entire text of this manual and Base Model manual, so they will
be qualified to render satisfactory customer service.
CAUTION
MICROWAVE RADIATION
Service engineers should not be exposed to the micro-
wave 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 ener-
gized.
WARNING
Never operate the oven until the following points are
ensured.
(A)The door is tightly closed.
(B)The door brackets and hinges are not defective.
(C)The door packing is not damaged.
(D)The door is not deformed or warped.
(E) There is not any other visible damage with the oven.
Servicing and repair work must be carried out only by
trained service engineers.
All the parts marked ‘I*”
more than 250V. on parts list are used at voltages
SHARP CORPORATION
OSAKA, JAPAN
1
PRODUCT DESCRIPTION .I-
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k-9A52
R-9H52
PRODUCT DESCRIPTION
SPECIFICATIONS
t
ITEM
Power Requirements 240 Volts
50 Hertz
DESCRIPTION
Power Consumption
Single phase, 3 wire earthed
1500W (Microwave)
1600W (Convection)
Power Output
-Convection Heating element
Power Output
C:,se Dimensions
750 watts nominal of RF microwave energy (2 litre water load)
Operating frequency of 2450M Hz
1500w
Width 627mm
Height 378mm
Depth 481 mm
Cooking Cavity Dimensions Width 41 Omm
Height 245mm
Depth 41 Omm
Control Complement
Set Weight
Touch Control System
Clock( 1:OO - 12:59 )
Timer (0 - 99 min. 99sec. )
Microwave Power for Variable Cooking
Repetition Rate;
HIGH ................*.........*....*. Full power throughout the cooking time
MED HIGH ..,,.,..*..,,....................I.*....*...... approx. 70% of Full Power
MED .......................................................... approx. 50% of Full Power
MED LOW (DEFROST) .......................... approx. 30% of Full Power
LOW ............................................*............. approx. 10% of Full Power
Convection Temperature for Variable Cooking
CONVECTION .......................*...........*.. 40 to 250°C Temp. control
LOW MIX, BAKE .................... 180°C with 10% microwave power
HIGH MIX, ROAST ................ 200°C with 30% microwave power
SLOW COOK ................................ 130°C for 4 hours (no preheat)
GRILL ...................................................................... 250°C (preheat)
Variable cooking control pads,
SENSOR COOK pad (R-9H52 only),
AUTO START/CLOCK pad,
EASY DEFROST pad,
ONE TOUCH REHEAT pad (R-9H52 only),
COMPU COOK pad (R-9H52 only),
STOP/CLEAR pad,
MEMORY pad, -<
INSTANT COOK/START pad,
AUTO COOK pad (R-9A52 only),
EASY REHEAT pad (R-9A52 only)
Approx. 30.0 kg

R-9A52 1
I?-9H52 I
OPERATING INSTRUCTIONS
1. Ventilation openings 6. Oven lamps
2. Access cover for oven lamp 7. Coupling
*Place the roller stay on the
coupling in the oven and seat
the turntable on the roller stay.
11. Waveguide cover
12. Roller Stay
replacement 8. Door open button 13. Turntable
3. Hinges 9. Touch Control Panel 14. Low rack
4. Safety door latches 10. Lighted digital display 15. High rack
5. See through door
Touch Control Panel W9H52)
SENSOR COOK PAD
Touch to select sensor cook
mode
SENSOR COOK MENUS i L
COMPU COOK PAD
Touch to select Compu Cook
mode
COMPU COOK MENUS
EASY DEFROST PAD
Touch to defrost meat by en-
tering weight only
CONVECTION COOKING 1
FUNCTION PADS
Touch to cook for each func-
tion. t
AUTO START/CLOCK PAD----, 1
Touch to set clock or auto
start time.
STOP/CLEAR PAD
Touch to erase during
programming.
Touch once to stop operation
of oven during cooking; touch
twice to cancel cooking
. programme.
1
- SENSOR COOK
HIGH MIX_ ROAST I 8 220%
LOW MIX_ BAKE I 9 230-C
. CONVECTION
-ONE TOUCH REHEAT PAD
Touch to start automatic re-
heat cycle
-NUMBER AND TEMPERATURE
PADS
Touch to enter cooking times,
clock time, convection tem-
perature or to select the
Sensor or Compu Cook
categories.
-MEMORY PAD
Touch to enter one frequent-
ly used cooking programme.
Touch to recall the memorized
programme.
VARIABLE COOKING CON-
Touch to select microwave
power setting. If not touched,
HIGH is automatically selec-
MORE( A 1,LESS( v) PADS.
Touch to increase/decrease
the time in one minute incre-
ments during cooking or to in-
crease/decrease the time
whilst programming the One
Touch Reheat, Sensor Cook,
Compu Cook or Easy Defrost
modes.
-INSTANT COOK/START PAD
Touch once to cook for 1
minute at HIGH or increase by
1 minute multiples each time
this pad is touched during
microwave, convection, grill
or mix cooking.
I
I
3

R-9A52
R-9H52
Touch Control Panel lR-gA52)
MULTI COOK PAD
Touch to select Multi Cook
mode r
MULTI COOK MENUS
--I
EASY REHEAT PAD
Touch to select Easy Reheat
mode.
EASY REHEAT MENUS
EASY DEFROST PAD
Touch to defrost
tering weight only.
MEMORY PAD
Touch to enter one frequent-
ly used cooking programme.
Touch to recall the memorized
programme.
CONVECTION COOKING
FUNCTION PADS
Touch to cook for each func-
tion. I
STOP/CLEAR PAD
Touch to erase during pro- L
gramming.
Touch once to stop operation
of oven during cooking; touch
twice to cancel cooking
programme.
MULTI COOK I AUTOSTART
CLOCK
1 Roast beef
2 Roast iamb
3 Roast chicken
4 Roast dmner
5 Mlxed grill
6 Cake layers
7 Jacket potatoes
EASY REHEAT I 4 150°C
1 Dinner plate
2 Chlcken pieces
3 Casserole / Soup
4 Pies
5 Beverage 6 180°C
- CONVECTION 0 250°C
GRILL SLOW COOK
STOP
CLEAR INSTANT COOK _ START
-AUTO START/CLOCK PAD
Touch to set clock or auto
start time.
-NUMBER AND TEMPERATURE
PADS
Touch to enter cooking times,
clock time, convection tem-
perature or to select the Multi
Cook or Easy Reheat menus.
-VARIABLE COOKING CON-
TROL PADS
Touch to select microwave
power setting. If not touched,
HIGH is automatically selec-
ted.
~
MORE( A 1, LESS( ~1 PADS
Touch to increase/decrease
the time in one minute incre-
ments during cooking or to in-
crease/decrease the time
whilst programming the Easy
Reheat, Multi Cook or Easy
Defrost modes.
-INSTANT COOK/START PAD
Touch once to cook for 1
minute at HIGH or increase by
1 minute multiples each time
this pad is touched during
microwave, convection, grill
or mix cooking.
4

A4
240V--5OHz d-4
240V--5OHz
TEMP.
FUSE
150%
\
OVEN
THERM0
CUT-OUT
OVEN
THERM0
CUT-OU
150’ c Note: For R-9H52
Note: For R-9H52 MONITOR RESISTOR MONITOR SWITCH
0.8/2OW
E-5
CONTROL UN 1 T
F- I
A F-2
s
Ii F-3
--
TAB I
I
-7
t I
0.8/2OW
1 Note
150-c /
FM
THERMO
CUT- OUT
90’ c
LOWER
LATCH
SW1 TCH
,____.__________._. ,--_-._-___-._____.
OL i
+-p OL i
--------------____J
._______...---___-______,
OVEN LAMP :
OL
OL ;
f-B-+
OL i
FM
.d lHERl.40
CUT- OUT
90’ c
‘I LOWER
LATCH
G- SWITCH
4,
* ---.._ Lz_- ___________ I
----_
UPPER
LATCH
SW1 TCH
UPPER
LATCH
SWITCH
SENSOR COOKING (R-9H52 ’ E-31
::::,R @$
E-4
E-5
DAMPER
SW1 TCH I
I CONTROL UN I T
NOTE: CONDITION
1. DOOR CLOSED
2. CLOCK APPEARS
SCHEMATIC
NOTE: CONDITION
OF OVEN
1. DOOR CLOSED
2. “SENSOR COOK”
PAD TOUCHED
3. “START” PAD
TOUCHED
m
HIGH COOKING
OF OVEN
1. DOOR CLOSED
2. COOKING TIME
PROGRAMMED
3. VARIABLE COOKING
CONTROL “HIGH”
4. START PAD TOUCHED
CM CONVECTION MOTOR
6-Y
STM TURNTABLE MOTOR
H.V. RECTIFIER MAQNETRON
_ POWER
’ TRANSFORMER
ASYMMETRIC
RECTIFIER
%
-II--- 7
I===
-L---
H.V. RECTIFIER MAGNETRON 3-J
Figure O-l. Oven Schematic-OFF Condition Figure O-2. Oven Schematic-High and Sensor Cooking Condition

A-4
240V-50Hz
OVEN
-1 fi%;;:
MONITOR RESISTOR MONITOR SWITCH
o.a/2ow
._..
(_____---____..-__.--.--~ f
OVEN LAMP :
MONITOR RESISTOR MONITOR SWITCH
o.a/2ow Q
tdnte ‘I””
F
-d,l
c
I
_----
DAMPER
SWITCH ’
i:
CONTROL UN I T
Note: For R-9H52
FM
lHERM0
CUT-CJU?
90’ c
LOWER
LATCH
SWITCH
-M
rHERM0
:u1-OUT
?O’c
LOWER
LATCH
SWITCH
I I
,__.______-________ I
OL ;
# OL i
--------------____,
UPPER
LATCH
SWITCH
SWITCH
SCHEMATIC SCHEMATIC
NOTE:CONDITION OF OVEN
1.DOOR CLOSED
2.MIX COOKING PAD TOUCHED
3.DESIRED TEMP. TOUCHED
4.START PAD TOUCHED
E-5
DAMPER
NOTE. CONDITION
OF OVEN
1. DOOR CLOSED
2. CONVECTION PAD
TOUCHED
3. DESIRED TEMP. PAD
TOUCHED
4 START PAD TOUCHED
CONTROL UN I T
DAMPER MOTOR
CONVECT:ON MOTOR
TURNTABLE MOTOR
CONVECTION HEATER
--
H.V. RECTIFIER MAGNETRON ,
H.V. RECTIFIER MAGNETRON 3-J
Figure O-3. Oven Schematic-Convection Cooking Condition Figure O-4 Oven Schematic-Automatic Mix Cooking Condition

R-9A52
R-9H52
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: To avoid possible exposure to microwave
energy;
A. Before operating the oven
I. Make sure that, when unlatching the door
slowly, an accompanying “click” indicating the
actuation of the monitor switch and latch
switches is heard.
2. Check visually the door seal for arcing and
damage.
3. The door is bent or warped.
4. There is any defective parts in the interlock,
oven door or microwave generating and trans-
mission assembly.
5.
B. Do not operate the oven before any of the follow-
ing conditions are repaired;
1. Door does not close firmly against the front of
appliance.
2. There are a broken door hinge or-support.
There is any other visible damage to the oven.
C. Do not operate the oven
1. Without the RF gasket.
2. If the door is not closed.
CAUTION: DISCONNECT OVEN FROM POWER
SUPPLY BEFORE REMOVING
OUTER CASE. DISCHARGE HIGH
VO LTAG E CAPACITOR BEFORE
TOUCHING ANY OVEN COMPO-
NENTS OR WIRING.
OUTER CASE CABINET REMOVAL
To remove the outer case and proceed as follows;
1. Disconnect oven from power supply.
2. Remove eight (8) screws from the rear and along
the side edge of the case.
3. Remove the two (2) screws (LHSTIX LR-4) from
the lower portion of the oven cabinet back side.
4. Slide the entire case back about 3 cm to free it from
retaining clip on the cavity face plate.
5. Lift the entire case from the unit.
CAUTION: DISCHARGE THE HIGH VOLTAGE
CAPACITOR BEFORE TOUCHING
ANY OVEN COMPONENTS OR
WIRING.
Note: The outer case cabinet is secured by special
(LH) screw. When securing or loosening the
screw, LHSTIX (LR-4) type screw driver
should be used. LH-SCREW(XOTSD40R12RVO)
Removal of LHSTIX screw at oven back side
LHSTIX SCREW DRIVER LkTlX SCREW
(SIZE LR-4)
LHSTIX screw driver and LHSTIX screw

‘R-9A52
R-9H52
1.
2.
3.
4.
OVEN LAMP SOCKET REMOVAL
Pull the wire leads from the oven lamp socket by
pushing the terminal hole of the oven lamp socket
with the flat type small screw driver.
Lift up the tab of the oven lamp mounting plate
holding the oven lamp socket.
Slide the oven lamp socket left-ward.
Now, the oven lamp socket is free.
CAUTION: When replacing the oven lamp socket, re-
1 place it so that the side where the black
dot is put faces left-ward.
Own lamp sodot
Oven lamp socket
8