Sharp R-9200 Service Manual
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Sharp R-9200 Service Manual

Sharp R-9200 Service Manual

Convection microwave oven
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SHARP
SERVICE MANUAL
.
S3201 RSZOOJ//
CONVECTION
MICROWAVE
OVEN
MODEL
R-9200
In interests of user-safety
the oven should
be restored to its original
condition
and only manufacturer
original
spare parts must be used.
(RD161OlU)
This is a supplemental
Service Manual
for Model
R-9ZOO.
This model is quite similar to Base Model
R-9HlO
(Refer No. is S9808R9HlOJ//).
Use this supplemental
manual together
with the Base Model Service Manual.
Refer to the Base Model
Service Manual
for complete
operation,
service information,
etc.
(RD17101U)
TABLE
OF CONTENTS
Page
APPEARANCE
VIEW
...........................................................................................................
Inside front cover
GENERAL
IMPORTANT
INFORMATION
......................................................................................................
1
CAUTION,
MICROWAVE
RADlATlON,WARNING
......................................................................................
1
PRODUCT
SPECIFICATIONS
.........................................................................................................................
2
OPERATION
.......................................................................................................................................................
3
FUNCTION
OF IMPORTANT
COMPONENTS
..............................................................................................
4
SERVICING
........................................................................................................................................................
5
TEST PROCEDURE
...........................................................................................................................................
6
TOUCH
CONTROL
ASSEMBLY
..................................................................................................................
13
COMPONENT
REPLACEMENT
AND ADJUSTMENT
PROCEDURE
.....................................................
21
MICROWAVE
MEASUREMENT
...................................................................................................................
22
WIRING
DIAGRAM
.......................................................................................................................................
23
PICTORIAL
DIAGRAM
..................................................................................................................................
25
CONTROL
PANEL CIRCUIT
.........................................................................................................................
26
PRINTED WIRING
DIAGRAM
.....................................................................................................................
27
PARTS LIST ....................................................................................................................................................
28
SHARP CORPORATION *

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Summary of Contents for Sharp R-9200

  • Page 1 COMPONENTS ..................................................SERVICING ............................TEST PROCEDURE TOUCH CONTROL ASSEMBLY ........................COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ............. MICROWAVE MEASUREMENT ........................WIRING DIAGRAM ......................................................PICTORIAL DIAGRAM ......................... CONTROL PANEL CIRCUIT ........................PRINTED WIRING DIAGRAM PARTS LIST ..............................SHARP CORPORATION *...
  • Page 2 1. Ventilation openings 2. Oven lamp 3. Hinges 4. Safety door latches 5. See through door 6. Door open button 7. Touch Control Panel 8. Digital readout 9. Waveguide cover lO.Access cover oven lamp replacement ll.Menue Label Intelli- gent Sensor 12.Low rack 13.High...
  • Page 3 OVEN \ :‘:;j OPERATING SEQUENCE R-9200 - :;--;:;sj FUNCTION OF IMPORTANT “-” “+$j GENERAL IMPORTANT INFORMATION COMPONENTS Sharp Corp. Service This Manual has been prepared to provide engineers with Operation and Service Information. It is recommended that service engineers carefully...

  • Page 4: Product Description

    R-9ZOO PRODUCT DESCRIPTION SPECIFICATIONS DESCRIPTION ITEM 240 Volts Power Requirements 50 Hertz Single phase, 3 wire earthed 16OOW (Microwave) Power Consumption 1600W (Convection) 800 watts nominal of RF microwave energy (2 litre water load) Power Output 900 watts (I EC-705-1 988) Operating frequency of 2450M Hz...
  • Page 5 R-9ZOO OPERATING SEQUENCE Within a 32 second base, first thermistor is ener- INTELLIGENT SENSOR COOKING CONDI- gized for 3 seconds. After 2 seconds since the TION thermistor is energized, the voltage across the tem- oven cooks foods automatically by using perature measurement circuit is measured.
  • Page 6 WEIGHT SENSOR FUNCTION OF MAIN COMPONENTS WEIGHT SENSOR ASSEMBLY Micr- computer Weight Sensor Osilator J-U-L I 2. The frequency 3. The micro-computer meas- 1. When the food is placed on the turntable, between oscilator changes according ures the weight of food elctrodes increases in direct...

  • Page 7: To Service Personnel

    Sharp recommend fault-finding is carried out with the supply discon- nected. It may in, some cases, be necessary connect the supply after the outer case has been...

  • Page 8: Test Procedure

    i- - iir - T; - TEST PROCEDURE RE J &I &T POSSIBLE CASE ;;l$ETIVE PROBLEM :ONDITION Home fuse blows when power supply cord is plugged into wall receptacle. Fuse blows when power supply cord is plugged into wall receptacle. CONDITION “88:88”...
  • Page 9 R-9200 RE = Replace / CK = Check ? %J ? hJ ---I > --r-r : -J 4 >...
  • Page 10 R-9ZOO TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MAGNETRON TEST ’ NEVER TOUCH ANY PART IN THE CIRCUIT WITH YOUR HAND OR AN INSULATED TOOL WHILE THE OVEN IS IN OPERATION. ----- CARRY OUT 3D CHECKS Isolate the magnetron from the high voltage circuit by removing all leads connected to the filament...

  • Page 11: Test Procedures

    R -9200 TEST PROCEDURES (CONT’D) PROCEDURE LETTER COMPONENT TEST (Tl OC) IT2 OC) (T2 OC) Heat up for 1 min. 45 sec. (RD82A02U) MICROWAVE OUTPUT POWER (IEC-7054988) The following test procedure should be carried out with the microwave oven in a fully assembled condition (outer case fitted).
  • Page 12 R-9ZOO TEST PROCEDURES (CONT’D) PROCEDURE COMPONENT TEST LETTER = 1 1 “C Initial temperature ..................... Tl + 2) = 49 sec.
  • Page 13 TEST PROCEDURES (CONT’D) PROCEDURE COMPONENT TEST LETTER RELAY TEST Remove the outer case and check voltage between Pin Numbers 1 and 3 of the 3-pin connector (A) on the control unit with an A.C. voltmeter. The meter should indicate 240 volts, if not check oven circuit. Shut-off,Cook and Heater Relay Test...
  • Page 14 TEST PROCEDURES (CONT’D) PROCEDURE LETTER COMPONENT TEST WEIGHT SENSOR ASSEMBLY IC3(MEMORY) TEST. After replacing weight sensor or IC3, carry out the following procedure order to calibrate the weight sensor. If the weight sensor is not recalibrate, food mav be over or under cooked.

  • Page 15: Control Panel Assembly

    TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL ACL Circuit The touch control section consists of the following A circuit to generate signals resetting the LSI to the units as shown in the touch control panel circuit. initial state when power is applied.
  • Page 16 DESCRIPTION OF LSI LSI(IZA413DR) The I/O signals of the LSI(IZA413DR) are detailed in the following table. 1 SIGNAL / VREF PIN NO. Reference voltage input terminal. A reference voltage applied to the A/D converter in the LSI. Connected to GND.(OV) (RD93GA6U) 1 IN 1 SIGNAL...
  • Page 17 I I/O 1 SIGNAL j P40 PIN NO. 1 17 / OUT Magnetron high-voltage circuit drivinq signal. To turn on and off the cook relay( RY2). H’GH In high operation, the signals holds “L” level during microwave and “H” level while not cooking.
  • Page 18 R -9200 1 SIGNAL / P31 PIN NO. j 24 %qnal to svnchronize LSI with commercial power source frequency. This is basic timing for all real time processing of LSI. rnGND 20 msac 1 SIGNAL / P30 1 OUT PIN NO. j 25 Damper motor...
  • Page 19 PIN NO. 1 39 1 SIGNAL 1 PI7 1 OUT Terminal not used. PIN NO. j 40 1 SIGNAL 1 PI6 j OUT Segment data signals. The relation between signals and indicators are as follows: Signal Segment Sianal Segment PI6 ........PO2 ..........
  • Page 20 I I/O 1 SIGNAL / PO6 1 OUT PIN NO. 1 48 Digit selection signal. Signal similar to PI 5. CRD938A2U) I I/O 1 SIGNAL / PO5 j OUT PIN NO. / 49 Kev strobe signal. Segment data signal. Signal applied to touch-key section.
  • Page 21 R-9Zoo ABSOLUTE HUMIDITY SENSOR CIRCUIT circuit starts to function and the LSI observes the (1) Structure of Absolute Humidity Sensor initial voltage available at its IN1 terminal. With absolute humidity sensor includes thermistors as shown in the illustration. this voltage given, the switches SW1 to SW5 in the LSI are turned on in such a way as to change the...
  • Page 22 R-9200 SERVICING For those models, check repair all the Precautions Handling Electronic controls (sensor-related ones included) of the Components touch control panel while keeping it connected This unit uses PMOS LSI in the integral part of the to the oven.

  • Page 23: Outer Case Removal

    R-9200 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE The door is bent or warped. WARNING: To avoid possible exposure to microwave There is any defective parts in the interlock, energy; Before operating the oven oven door or microwave generating and trans- mission assembly.
  • Page 24 MICROWAVE MEASUREMENT an electrically non-conductive material such After adjustment door latch switches, monitor glass or plastic. switch and door are completed individually or collec- The placing of this standard load in the oven is im- tively, the following leakage test must be performed portant not only to protect the oven, but also to in- with a survey instrument...
  • Page 25 I ;i K =y i Gtip r--- i--- % L ’ Figure O-1. Oven Schematic-OFF Condition SCEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. COOKING TIME PROGRAMMED. 3. VARIABLE COOKING CONTROL “HIGH” 4. START PAD TOUCHED. ---- i--_- i j-&g! iI!! Figure...
  • Page 26 SCEMATIC NOTE: CONDITION OF OVEN. !> r- ‘2 )! iif ‘” i--_-i % "ifi L--J “h f 6p Figure O-3. Oven Schematic-Convection Cooking Condition SCEMATI C NOTE: CONDITION OF OVEN. Figure O-4. Oven Schematic-Automatic Cooking Condition...
  • Page 27 Figure S-l. Pictorial Diagram ’ 9...
  • Page 28 6‘ _--- % --- _. 5 I -5 . -- I -.-! n’E ‘A !ii ‘d I$ f gl 9 ASE/d0001 AOE/dl’O > -YiiGG-[ l--E -II- nL’r...
  • Page 29 R-9Zoo Board Figure S-3. Printed Wiring...

  • Page 30: Parts List

    PARTS LIST The voltage supplied the parts “*rr are greater than 250V. Note : DESCRIPTION 1 my ICODE REF. NO. PART ELECTRICAL PARTS RH-DzA032WREO High voltage rectifier ass'y l- 1 FH-HZAOlOWREO Thermistor ass'y l- 2 QACCAA020WREO Power supply cord l- 3 l- 4 QFS-CAOlOWREO Fuse...
  • Page 31 Nnte vnltane s~~nnliad narts rr*rr areater than ..-.- ‘-..-J.. --rr..-- _..-.. -..- I----- a------ PART DESCRIPTION REF. NO. Q’TY RC-KZA031DREO Capacitor O.lpF VCEAB31EW226M Capacitor 22pF O.OlpF VCKYF31HF103Z Capacitor VCKYDllHBlOlK Capacitor 1OOpF 10pF VCEAB31CWlOGM Capacitor O.lpF VCEAB31HW104M Capacitor 4.7pF VCEAB31VW475M Capacitor RCRS-AOlODREO Ceramic filter...
  • Page 32 R-9ZOO Note : The voltage supplied to the parts s*rr are greater than 250V. DESCRIPTION Q’TY CODE REF. NO. PART FSRAHA047WRYO Turntable support plate LANGFA089WRWO Chassis support LANGQA136WRWO Convection motor mounting plate FANGQAlllWRYO Lamp socket mounting angle 4-10 LANGQA163WRPO Thermal cut-out mounting angle...

  • Page 33: How To Order

    Note : The voltage supplied to the parts ‘I*” are greater than 250V. DESCRIPTION REF. NO. PART Q’TY CODE 6-11 LHLDWQ004YBEO Wire holder (purse lock "L") 6-12 OTANP0020YBEO Connector CE-230 6-13 ?CAUH0114WRRO Caution label 6-14 TSPCNB651WRRO plate Name 6-15 TLABNA134WRRO Menue label 6-16...

  • Page 35: Control Panel Parts

    CONTROL PANEL PARTS 6-14 DOOR ASSEMBLY +‘/A .‘\...
  • Page 36 6- 8 Actual wire harness may be different than illustration. PACKING ACCESSORIES PACKING CPADBAO83WRKO DOOR PROTECTION SHEET I _i .H’ DOOR SPADF0341 WREO HIGH RACK RACK obbb OPERATION \TRAY PACKING FOAM SPADPA453WREO Not replaceble items. ‘92 0 SHARP CORP. (03k0.73F...

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