Table of Contents
Advertisement
10 min
ROAST
BEEF / LAMB
CHICKEN
PORTIONS
CHILLED
READY MEALS
FRESH FISH
1 Oven Ready
2 Crispy Crumb
3 Baked Potatoe
4 Oven Chips
5 Yorkshir e
6 Cake
DOWN
MICR O.
POWE R
KITC HEN
TIME R
R-96 3
SERVICING ...................................................................................................................... INSIDE COVER
WARNING ................................................................................................................................................. 1
PRODUCT SPECIFICATIONS ................................................................................................................. 2
GENERAL INFORMATION ....................................................................................................................... 2
APPEARANCE VIEW .............................................................................................................................. 3
OPERATION SEQUENCE ........................................................................................................................ 4
FUNCTION OF IMPORTANT COMPONENTS ....................................................................................... 8
TROUBLESHOOTING GUIDE ............................................................................................................... 11
TEST PROCEDURE .............................................................................................................................. 12
TOUCH CONTROL PANEL ASSEMBLY .............................................................................................. 19
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE .................................................. 25
MICROWAVE MEASUREMENT ........................................................................................................... 31
SCHEMATIC DIAGRAMS ...................................................................................................................... 32
PICTORIAL DIAGRAM .......................................................................................................................... 36
POWER UNIT CIRCUIT ......................................................................................................................... 37
CPU UNIT CIRCUIT ............................................................................................................................... 38
INDICATOR CIRCUIT ............................................................................................................................. 40
KEY UNIT CIRCUIT ................................................................................................................................ 41
PRINTED WIRING BOARD .................................................................................................................... 43
PARTS LIST .......................................................................................................................................... 44
EXPLODED DIAGRAM OF OVEN ......................................................................................................... 47
CONTROL PANEL/DOOR PARTS ......................................................................................................... 48
MISCELLANEOUS/PACKING & ACCESSORIES .................................................................................. 49
Jet Conve ction &
Grill
MODELS
1 min.
10sec.
COOK
ROAST PORK
ROAST POULTRY
DEFROS T
STEAK / CHOPS
MINCED MEAT
FRESH
READY MEALS
CANNED FOOD
RICE / PASTA
FRESH VEG.
Pizza
Foods
s
AUTO
Pudding
COOK
Kg.Lb. Pcs
Time
UP
LESS
MOR E
GRILL
CONV .
DUAL
( ˚C )
CONV ./
GRIL L
Kg/L b
AUTO STAR
T
CLOC K
STO P
CLEA R
STA RT
AUTO MINU
TE
900W
nfo
In interests of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.
TABLE OF CONTENTS
SHARP CORPORATION
MICROWAVE OVEN WITH
GRILL AND CONVECTION
R-953(SL)M
R-953(W)M
R-963(SL)M
R-963(W)M
S0601R963EW//
Page
Advertisement
Table of Contents
Related Manuals for Sharp R-953(SL)M
Summary of Contents for Sharp R-953(SL)M
-
Page 1: Table Of Contents
SERVICE MANUAL S0601R963EW// MICROWAVE OVEN WITH GRILL AND CONVECTION Jet Conve ction & Grill R-953(SL)M MODELS 10 min 1 min. 10sec. COOK ROAST BEEF / LAMB ROAST PORK ROAST POULTRY DEFROS T CHICKEN PORTIONS STEAK / CHOPS MINCED MEAT CHILLED... - Page 2 If the water remains cold carry out 3D checks and re-examine the connections to the compo- Sharp recommend that wherever possible fault-finding is nent being tested. carried out with the supply disconnected. It may in, some...
-
Page 3: Servicing
GRILL AND CONVECTION R-953(SL)M/ R-953(W)M/ R-963(SL)M/ R-963(W)M GENERAL INFORMATION GENERAL IMPORTANT INFORMATION This Manual has been prepared to provide Sharp Corp. Service engineers with Operation and Service Information. APPEARANCE VIEW It is recommended that service engineers carefully study the entire text of this manual, so they will be qualified to render satisfactory customer service. -
Page 4: Product Description
PRODUCT DESCRIPTION SPECIFICATION ITEM DESCRIPTION Power Requirements 230 - 240 Volts / 50 Hertz / Single phase, 3 wire earthed Power Consumption Microwave cooking 1.55 kW Approx. 6.7 A Convection cooking 2.85 kW Approx. 11.9 A Grill cooking 2.85 kW Approx. 11.9 A Micro and Grill ...... -
Page 5: Appearance View
APPEARANCE VIEW OVEN 1. Grill heating element 2. Oven lamp 3. Control panel 4. Shelf runners 5. Waveguide cover 6. Oven cavity 7. Coupling 8. Door seals and sealing surfaces 9. Door opening handle 10.Air-vent openings 11.Outer cabinet 12.Power cord 15.Low Rack 13.Turntable 16.High Rack... -
Page 6: Operation Sequence
OPERATION SEQUENCE OFF CONDITION Switch Contact Condition Closing the door activates the monitored latch switch and During Oven Door the stop switch. Cooking Open(No cooking) COM-NO Closed Opened IMPORTANT: Monitored latch switch COM-NC Opened Closed When the oven door is closed, the contacts COM-NC Stop switch COM-NO Closed... - Page 7 OPERATION SEQUENCE Note: The On/Off time ratio does not exactly correspond 2. The relay RY4 and RY3 are energized and the main to the percentage of microwave power, because supply voltage is applied to the convection heating approx. 3 seconds are needed for heating up the element and the grill heating element.
- Page 8 OPERATION SEQUENCE ON/OFF TIME RATIO FAN MOTOR OPERATION (in Grill, Convection and Dual mode) In grill cooking, convection cooking or dual cooking, the grill heating elements or magnetron operate within a 48 When oven is stopped during cooking, or after the cooking second time base.
- Page 9 OPERATION SEQUENCE AH SENSOR COOKING SEQUENCE 1. When the AH sensor cooking condition is started, the coil of shut-off relays (RY1+RY6) are energized, the oven lamp and cooling fan motor are turned on, but the power transformer is not turned on. NOTE: The oven should not be operated on AH SENSOR COOKING immediately after plugging in the unit.
-
Page 10: Function Of Important Components
FUNCTION OF IMPORTANT COMPONENTS DOOR OPEN MECHANISM CAUTION: BEFORE REPLACING A BLOWN FUSE F8A, TEST THE MONITORED LATCH SWITCH The door can be opened by pushing the open button on the AND MONITOR SWITCH FOR PROPER control panel. When the open button is pushed, the open OPERATION. - Page 11 FUNCTION OF IMPORTANT COMPONENTS elements is circulated through the convection passage provided on the outer casing of the oven cavity by means of the convection fan which is driven by the convection ASYMMETRIC motor. It is then enters the inside of the oven through the RECTIFIER HIGH VOLTAGE vent holes provided on the back side of the oven.
-
Page 12: Troubleshooting Guide
FUNCTION OF IMPORTANT COMPONENTS the damper cam, damper switch is closed (ON posi- 1. If the temperature of the thermistor does not rise to tion). more than 40˚C after 4 minutes and 15 seconds from 1-4. The signal of damper switch is re-sensed in the when the oven is started in convection, grill (top and control unit and shut-off relay (RY8) is turned off. - Page 13 TEST PROCEDURE A B C D E E E E F G G G H H H H J K L L M N O O O O O O O O P Q POSSIBLE CAUSE DEFECTIVE PARTS PROBLEM CONDITION Fuse F8A blows when the door is opened.
-
Page 14: Test Procedure
The power output of this oven is rated using the method specified by IEC 60705. Full details of how to curry out this procedure can be found in the Sharp Technical Training notes which is available from Sharp Parts Centre (part number SERV-LITMW01). - Page 15 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HIGH VOLTAGE RECTIFIER TEST CARRY OUT 3D CHECKS. Isolate the high voltage rectifier assembly from the HV circuit. The high voltage rectifier can be tested using an ohmmeter set to its highest range. Connect the ohmmeter across the terminal B+C of the high voltage rectifier and note the reading obtained.
- Page 16 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER THERMISTOR TEST CARRY OUT 3D CHECKS. Disconnect the connector B from CPU unit. Measure the resistance of the thermistor with an ohmmeter. Connect the ohmmeter leads to Pin No's C1 and C3 of the thermistor harness. Room Temperature Resistance 20˚C - 30˚C...
- Page 17 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER Cx ± 20% Cy ± 20% L (min) 1.0mH 0.22µF 4700pF MEASURING POINTS INDICATION OF OHMMETER Between N and L Approx. 680 kΩ Between terminal N and WHITE Short circuit Between terminal L and RED Short circuit If incorrect readings are absorbed, replace the noise filter unit.
- Page 18 DOWN MORE LESS DOWN CLOCK MINUTE CLOCK MINUTE DUAL DUAL CONV. STOP STOP CONV. KITCHEN RICE/ KITCHEN CONV./ Kg / Lb Kg / Lb CONV./ info CLEAR (˚C) (˚C) TIMER CLEAR PASTA TIMER GRILL GRILL R-953(SL)M/(W)M R-963(SL)M/(W)M R-953/963M - 16...
- Page 19 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER RELAY TEST CARRY OUT 3D CHECKS. Remove the outer case and check voltage between Pin Nos. 1 and 3 of the 4 pin connector (E) on the control unit with an A.C. voltmeter. The meter should indicate 230-240 volts, if not check oven circuit. Relay Test Check voltage at the relay coil with a D.C.
- Page 20 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER AH SENSOR TEST FOR R- 963(SL)M/(W)M Checking the initial sensor cooking condition (1) The oven should be plugged in at least two minutes before sensor cooking. (2) Room temperature should not exceed 35˚C. (3) The unit should not be installed in any area where heat and steam are generated. The unit should not be installed, for example, next to a conventional surface unit.
-
Page 21: Touch Control Panel Assembly
TEST PROCEDURES Plunger 6-4. After approximately 3 seconds, the display shows "STAND COVER". If the above is not the case, the control unit is probably defective. If the above is proper, the AH sensor is probably defective. To connector (F) on Control Unit. -
Page 22: Description Of Lsi
Pin No. Signal Description Terminal not used. (For only R-953(SL)M/(W)M) Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an analog input terminal from the AH sensor circuit, and connected to the A/D converter built into the LSI. (For only R-963(SL)M/(W)M) Timing signal output terminal for temperature measurement(OVEN THERMISTOR). - Page 23 DESCRIPTION OF LSI LSI(IXA034DR) The I/O signal of the LSI(IXA034DR) are detailed in the following table. Pin No. Signal Description INT1 Terminal not used. INT0 Signal to synchronized LSI with commercial power source frequency(50Hz). This is basic timing for time processing H : GND of LSI.
- Page 24 Input signal which communicates the door open/close information to LSI. Door closed; "H" level signal. Door opened; "L" level signal. Terminal not used. (For only R-953(SL)M/(W)M) AH sensor input. This input is an analog input terminal from the AH sensor circuit, and connected to the A/D converter built into the LSI.
- Page 25 ABSOLUTE HUMIDITY SENSOR CIRCUIT With this voltage given, the switches SW1 to SW5 in (1) Structure of Absolute Humidity Sensor the LSI are turned on in such a way as to change the The absolute humidity sensor includes two thermistors resistance values in parallel with R97 ~ R102.
- Page 26 SERVICING 5) Re-connect the power supply cord after the outer 1. Precautions for Handling Electronic Components case is installed. This unit uses CMOS LSI in the integral part of the circuits. 6) Run the oven and check all functions. When handling these parts, the following precautions should be strictly followed.
-
Page 27: Component Replacement And Adjustment Procedure
Oven lamp, Magnetron, High voltage trans- To prevent an electric shock, take the following former and Oven cavity. manners. 3) Sharp edge: 1. Before wiring, Bottom plate, Oven cavity, Weveguide flange, 1) Disconnect the power supply. Chassis support and other metallic plate. - Page 28 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 7. Disconnect the high voltage rectifier assembly from the CAUTION: WHEN REPLACING HIGH VOLTAGE high voltage capacitor. RECTIFIER ASSEMBLY, ENSURE THAT 8. Now, the high voltage rectifier assembly and the high THE CATHODE (EARTH) CONNECTION voltage capacitor should be free.
- Page 29 Re-install 4. Cut the three (3) bridges holding the turntable motor 1. Remove the any sharp edges on the turntable motor cover to the base plate with cutting pliers as shown in cover and the base plate with the cutting pliers.
- Page 30 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE CONVECTION MOTOR REMOVAL CONVECTION HEATING ELEMENT REMOVAL 15. Remove the one (1) nut and washer from the convec- 15.Remove the two (2) screws holding the convection tion motor shaft. heating element to the convection duct. 16.
- Page 31 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE GRILL HEATING ELEMENTS REMOVAL 1. CARRY OUT 3D CHECKS. 2. Disconnect wire leads from the thermal cut-out (GRILL). the oven cavity top plate, slide the grill reflector toward the magnetron. And then lift up the grill reflector and 3.
-
Page 32: Door Replacement
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE DOOR REPLACEMENT 6. Re-install choke cover to door panel by clipping into REMOVAL position. 1. Disconnect the oven from the power supply. 7. Locate door panel hinge pins into cavity hinge location 2. Push the door slightly. holes. -
Page 33: Microwave Measurement
MICROWAVE MEASUREMENT PROCEDURE After any repair, the microwave oven must be checked for microwave leakage to ensure continued safe operation. 1. Place the beaker containing the water load in the oven BS EN 60335-2-25 specifies that the maximum permitted cavity at the centre of the turntable. The placing of this leakage with a load of 275 ml is 50 W/m (equivalent to 5 standard load in the oven is important, not only to... -
Page 34: Schematic Diagrams
SCHEMATIC DIAGRAMS Note: SCHEMATIC AC CORD CONNECTION NOTE: CONDITION OF OVEN BRN : BROWN 1. DOOR CLOSED. BLU : BLUE 2. PLUGGED IN OVEN. G-Y : GREEN AND YELLOW STRIPE 3. NOTHING APPEARS ON DISPLAY. /15 : SECTIONAL AREA OF 1.5mm MIN. - Page 35 SCHEMATIC DIAGRAMS SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. " . O" APPEARS ON DISPLAY. CONTROL UNIT DAMPER STOP THERMISTOR SWITCH SWITCH ASYMMETRIC N.O . COM. COM. N.O. RECTIFIER N.C. MONITORED LATCH SWITCH N.C. MONITOR SWITCH Figure O-1(c) Oven Schematic-OFF Condition after the oven door is closed. SCHEMATIC NOTE: CONDITION OF OVEN 1.
- Page 36 SCHEMATIC DIAGRAMS SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. NOTE: The convection heater will be operational as back up until the oven cavity 2. COOKING TIME ENTERED. 3. GRILL MODE SELECTED. temperature rises to 220 ˚C. 4. STRAT KEY TOUCHED. CONTROL UNIT DAMPER...
- Page 37 SCHEMATIC DIAGRAMS SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. COOKING TIME ENTERED. 3. DUAL CONV./GRILL PAD TOUCHED ONCE. 4. CONVECTION TEMPERATURE SELECTED. 5. MICROWAVE POWER LEVEL SELECTED. 6. STRAT KEY TOUCHED. CONTROL UNIT DAMPER STOP THERMISTOR SWITCH SWITCH ASYMMETRIC COM.
-
Page 38: Pictorial Diagram
CN-F AH SENSOR CN-C THERMISTOR GRILL HEATING ELEMENT OVEN LAMP THERMAL CONTROL PANEL CUT-OUT(GRILL) CN-B POWER SUPPLY CORD STOP SWITCH G–Y CN-D CN-F CN-G CN-1 CN-2 CN-B N.O. DAMPER SWITCH WH-1 WH-2 DAMPER NOISE FILTER MOTOR COM. N.O. CN-5 N.C. CN-C MONITOR CONVECTION... -
Page 39: Power Unit Circuit
POWER UNIT CIRCUIT OVEN S1NB10 WH1-4 THERMISTOR WH1-3 – – R4 510 1w WH1-6 Q1 2SB1238 R5 3.3k WH1-9 BUZZER AC230-240V R3 680 1w 50Hz WH2-2 WH1-10 WH1-5 POWER WH1-11 CONTROL WH1-8 FAN MOTOR CONVECTION WH1-7 MOTOR DAMPER WH2-4 MOTOR R6 130 1w OVEN LAMP WH2-3... -
Page 40: Cpu Unit Circuit
C1-5 C1-3 2SA1037AK – DTA143EKA INT0 2SB1238 C1-6 LD10 LD11 LD12 LD13 LD14 DTA143EKA LD19 LD18 LD17 LD16 LD15 C1-10 C2-2 BUZZER C1-9 POWER C1-11 Fig. S-4 CONTROL DTA143EKA DAMPER C2-4 MOTOR DTA143EKA See Schm. Diag. C C2-3 IXA034DR Q23DTA143EKA C1-8 MOTOR Fig. - Page 41 C1-5 C1-3 2SA1037AK – DTA143EKA INT0 2SB1238 C1-6 LD10 LD11 LD12 LD13 LD14 IC2 1/2 DTA143EKA LD19 LD18 LD17 LD16 LD15 C1-10 C2-2 BUZZER C1-9 MA152WA IC2 BA4558F POWER C1-11 Fig. S-4 CONTROL DTA143EKA 1.8kF DAMPER C2-4 MOTOR DTA143EKA R93 360kF See Schm.
-
Page 42: Indicator Circuit
INDICATOR CIRCUIT R-953/963M - 40... -
Page 43: Key Unit Circuit
: IF NOT SPECIFIED 0.01µF/25V : IF NOT SPECIFIED 1/10W ± 5% 5597-12CPB R68 15k ROAST ROAST ROAST STEAK/ CHICKEN IC1-6(P73) BEEF/ 10 sec. 1 min. 10 min. POULTRY PORK CHOPS PORTIONS LAMB R69 15k MINCED AUTO IC1-7(P72) GRILL MEAT COOK AUTO R70 15k... - Page 44 : IF NOT SPECIFIED 0.01µF/25V : IF NOT SPECIFIED 1/10W ± 5% R68 15k ROAST ROAST ROAST STEAK/ CHICKEN IC1-6(P73) BEEF/ 10 sec. 1 min. 10 min. POULTRY PORK CHOPS PORTIONS LAMB R69 15k FROZEN CHILLED MINCED CANNED FRESH FRESH AUTO IC1-7(P72) READY...
-
Page 45: Printed Wiring Board
PRINTED WIRING BOARD POWER UNIT VRS1 POWER CONT Figure S-6. Printed Wiring Board of Power Unit R-953/963M - 43... -
Page 46: Parts List
Thermistor 1-25 FDTCTA208WRKZ AH sensor assembly [R-963(SL)M/(W)M] CABINET PARTS 2- 1 GCABDA005URP0 Back plate 2- 2 GCABUA038URP0 Outer case cabinet [R-963(SL)M, R-953(SL)M] 2- 2 GCABUA037URP0 Outer case cabinet [R-963(W)M, R-953(W)M] 2- 3 GLEGPA028WRE0 Foot 2- 4 GDAI-A003URP0 Base plate CONTROL PANEL PARTS... -
Page 47: Oven Parts
Capacitor holder 4-44 PSKR-A308WRF0 Rear barrier 4-45 LANGFA002URP0 Cavity support bracket DOOR PARTS ∆ 5- 1 CDORFS013URK0 Door panel assembly [R-963(SL)M, R-953(SL)M] ∆ 5- 1 CDORFW015URK0 Door panel assembly [R-963(W)M] ∆ 5- 1 CDORFW017URK0 Door panel assembly [R-953(W)M] 5-1-1 GCOVHA024URF0... - Page 48 Screw: 3mm x 15mm 7-12 XBPWW30P05K00 Screw: 3mm x 5mm 7-13 XEBSD30P06000 Screw: 3mm x 6mm [R-963(SL)M/(W)M] 7-13 XEBSD30P06000 Screw: 3mm x 6mm [R-953(SL)M/(W)M] 7-14 XOTWW40P06000 Screw: 4mm x 6mm 7-15 XHTWW40P08000 Screw: 4mm x 6mm 7-16 LX-CZA001URE0 Special screw...
-
Page 49: Exploded Diagram Of Oven
OVEN PARTS 7-16 4-17 7-10 1-17 4-25 7-13 6-11 4-18 4-20 4-45 7-17 7-13 4-27 1-25 4-10 4-22 7-16 4-21 These holes for R963M only 4-19 4-13 7-13 4-23 4-15 7-17 7-12 7-16 4-16 7-10 7-15 4-24 4-11 4-14 7-14 4-26 4-30 1-12... -
Page 50: Control Panel/Door Parts
CONTROL PANEL / DOOR PARTS CONTROL PANEL PARTS 5-1-8 5-1-1 5-1-3 5-1-2 5-1-8 DOOR PARTS 5-1-5 5-1-7 5-1-6 5-1-4 R-953/963M - 48... -
Page 51: Miscellaneous/Packing & Accessories
ROLLER STAY (SPADPA020WRE0) (FROLPA060WRE0) PRINTED MATTER INTO THE ACCESSORY HOLDER OVEN CAVITY (SPADPA019URE0) SQUARE RACK (X2) (FAMI-A003URK0) PLASTIC BAG (SSAKBA003URE0) BOTTOM PAD ASSEMBLY (FPADBA304URK3) PACKING CASE Not Replaceable Items. R-953(W)M; SPAKCA375URR0 R-953(SL)M; SPAKCA376URR0 R-963(W)M; SPAKCA377URR0 R-963(SL)M; SPAKCA378URR0 R-953/963M - 49... - Page 52 No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. 2000 SHARP CORP. (6S1.31E) Printed in U.K. R-953/963M - 50...