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Sharp R-210D Service Manual

Microwave oven
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See also: Operating Manual , Operation Manual and Cooking Guide
CAUTION, MICROWAVE RADIATION ................................................................................................................. 1
WARNING .............................................................................................................................................................. 1
PRODUCT SPECIFICATIONS ............................................................................................................................. 2
GENERAL INFORMATION .................................................................................................................................... 2
APPEARANCE VIEW ........................................................................................................................................... 3
OPERATION SEQUENCE .................................................................................................................................... 4
FUNCTION OF IMPORTANT COMPONENTS .................................................................................................... 5
SERVICING ........................................................................................................................................................... 6
TEST PROCEDURE ............................................................................................................................................. 8
TOUCH CONTROL PANEL ................................................................................................................................. 14
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ............................................................... 18
MICROWAVE MEASUREMENT ........................................................................................................................ 24
WIRING DIAGRAM ............................................................................................................................................. 25
PICTORIAL DIAGRAM ....................................................................................................................................... 26
CONTROL PANEL CIRCUIT ............................................................................................................................... 27
PRINTED WIRING BOARD ................................................................................................................................. 28
PARTS LIST ....................................................................................................................................................... 29
MED LOW
DEFR OST
LOW
MED
MED HIGH
HIGH
MODEL
2
3
1
4
5
6
0
7
8
9
30
10
25
11
20
12
15
14
13
1.0
DEFR OST(
kg)
0.5
DIN NER PLA
TE
REHE AT
MED
1 SERV E
(400g )
7-8
SOU P
min.
REHE AT
HIGH
1 cup (250m
l)
2-2
1/2min .
FRES H VEG ETAB
LES
COO K 250g
HIGH
3-4
min.
DEF ROS T
Chec k chart
in Oper ation
Manu al
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
R-210D
R-210D
S5001R210DPJ/

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  • Page 1: Table Of Contents

    R-210D SERVICE MANUAL S5001R210DPJ/ MICROWAVE OVEN MED LOW DEFR OST MED HIGH HIGH R-210D MODEL DEFR OST( DIN NER PLA REHE AT 1 SERV E (400g ) SOU P min. REHE AT HIGH 1 cup (250m 1/2min . FRES H VEG ETAB...
  • Page 2 R-210D...

  • Page 3: Caution Microwave Radiation

    PRODUCT SPECIFICATIONS R-210D GENERAL IMPORTANT INFORMATION APPEARANCE VIEW 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 OPERATING SEQUENCE entire text of this manual, so they will be qualified to render satisfactory customer service.

  • Page 4: Product Specifications

    R-210D PRODUCT SPECIFICATIONS ITEM DESCRIPTION Power Requirements 230 - 240 Volts 50 Hertz Single phase, 3 wire earthed Power Consumption 1.16 kW Power Output 800 watts nominal of RF microwave energy (IEC Test Procedure) Operating frequency 2450 MHz Case Dimensions...

  • Page 5: Appearance View

    R-210D APPEARANCE VIEW OVEN 1. Ventilation openings 7. Coupling 2. Oven lamp 8. Control panel 3. Door hinges 9. Waveguide cover 4. Door safety latches 10. Power supply cord 5. See through door 11. Turntable 6. Door seals sealing surfaces 12.

  • Page 6: Operation Sequence

    R-210D OPERATION SEQUENCE OFF CONDITION 6-1 When the oven door is opened during or after the Closing the door activates all door interlock switches cycle of a cooking program, the 1st. latch and stop (1st. latch switch, 2nd. latch switch and stop switch).

  • Page 7: Function Of Important Components

    R-210D FUNCTION OF IMPORTANT COMPONENTS THERMAL CUT-OUT 125˚C (OVEN) DOOR OPEN MECHANISM The thermal cut-out located on the top of the oven cavity The door is opened by pulling the door, refer to the Figure is designed to prevent damage to the oven if the foods in D-1.

  • Page 8: Servicing

    3D checks and re-examine the connections to screwdriver. the component being tested. Sharp recommend that wherever possible fault-finding is carried out with the supply disconnected. It may, in some cases, be necessary to connect the supply after the outer case has been removed, in this event carry out 3D checks and then disconnect the leads to the primary of the power transformer.
  • Page 9 R-210D CK = Check / RE = Replace TEST PROCEDURE A B C D E E E E F G G H H I L N O RECKCKRE CKCKCK CK CK POSSIBLE CAUSE DEFECTIVE PARTS PROBLEM CONDITION Home fuse blows when power supply cord is plugged into wall outlet.

  • Page 10: Test Procedure

    R-210D 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 terminal.
  • Page 11 R-210D TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER Room temperature ....... To = 21˚C Initial temperature ....T1 = 11 C Temperature after (52 + 2) = 54 sec..............T2 = 21 C Temperature difference Cold-Warm ..............T1 = 10 C Measured output power The equation is “P = 80 x T”...
  • Page 12 R-210D TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HIGH VOLTAGE CAPACITOR TEST CARRY OUT 3D CHECKS. A. Isolate the high voltage capacitor from the circuit. B. Continuity check must be carried out with measuring instrument which is set to the highest resistance range.
  • Page 13 R-210D TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER to resistricted ventilation, cooling fan failure or a fault condition within the magnetron or HV circuit. An open circuit temperature fuse (OVEN) indicates that the food in the oven cavity may catch fire, this may be due to overheating produced by improper setting of the cooking time or failure of the control panel.
  • Page 14 R-210D TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER CONTROL PANEL ASSEMBLY TEST The control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike conventional microwave ovens, proper maintenance can not be performed with only a voltmeter and ohmmeter.
  • Page 15 R-210D TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD(PWB) IS OPEN To protect the electronic circuits, this model is provided with a fine foil pattern added to the input circuit on the PWB, this foil pattern acts as a fuse.

  • Page 16: Touch Control Panel

    R-210D CONTROL PANEL ASSEMBLY OUTLINE OF CONTROL PANEL 5) Buzzer Circuit Control Unit The buzzer is responsive to signals from the LSI to emit Control unit consists of LSI, power source circuit, synchro- audible sounds (tact switch touch sound and comple- nizing signal circuit, ACL circuit, buzzer circuit, encoder tion sound).
  • Page 17 R-210D DESCRIPTION OF LSI LSI(IXA023DR) The I/O signal of the LSI(IXA023DR) are detailed in the following table. Pin No. Signal Description Segment data signal. Signal is input to the cathodes of the light-emitting diodes (LD8, LD16 and LD24). Signal to sound buzzer.
  • Page 18 R-210D Pin No. Signal Description INT1 Signal to synchronize LSI with commercial power source frequency. This is basic timing for all real time process- H : GND ing of LSI. L (-5V) 20 msec 18-19 AIN0-AIN1 Terminal to change functions according to the model.
  • Page 19 R-210D SERVICING B. On some models, the power supply cord be- 1. Precautions for Handling Electronic Components tween the touch control panel and the oven This unit uses CMOS LSI in the integral part of the proper is so long enough that they may be circuits.

  • Page 20: Component Replacement And Adjustment Procedure

    Please refer to ‘OVEN PARTS, CABINET PARTS, CONTROL PANEL PARTS, DOOR PARTS’, when carrying out any of the following removal procedures: WARNING FOR WIRING and Oven cavity. To prevent an electric shock, take the following 3) Sharp edge: manners. Bottom plate, Oven cavity, Waveguide flange, 1. Before wiring, Chassis support and other metallic plate.
  • Page 21 R-210D HIGH VOLTAGE COMPONENTS REMOVAL (HIGH VOLTAGE CAPACITOR, HIGH VOLTAGE RECTIFIER ASSEMBLY AND H.V. FUSE) 8. Disconnect the H.V. fuse from the high voltage capacitor. To remove the components, proceed as follows. 9. Now H.V. rectifier assembly, H.V. fuse and H.V. ca- 1.
  • Page 22 Re-install oven cavity. 3. Turn the oven over. 1. Remove the any sharp edges on the turntable motor 4. Cut the four (4) bridges holding the turntable motor cover and the bottom plate with the cutting pliers. cover to the bottom plate with the cutting pliers as 2.
  • Page 23 R-210D FAN MOTOR REPLACEMENT REMOVAL 1. CARRY OUT 3D CHECKS. 14. Remove the two (2) screws holding the fan motor to 2. Disconnect the wire leads from the fan motor. the fan duct. 3. Remove the one (1) screw holding the chassis support 15.
  • Page 24 R-210D 1ST. LATCH SWITCH, 2ND. LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH REMOVAL 1. CARRY OUT 3D CHECKS. middle position. The stop switch and 2nd. latch switch 2. Disconnect wire leads from the switches and control are in the upper position.
  • Page 25 R-210D DOOR REPLACEMENT 2. Deviation of door alignment from horizontal line of REMOVAL cavity face plate is to be less than 1.0mm. 1. Disconnect the power supply cord. 3. Door is positioned with its face pressed toward cavity 2. Open the door slightly.

  • Page 26: Microwave Measurement

    R-210D MICROWAVE MEASUREMENT Recommended instruments are: After adjustment of door latch switches, monitor switch NARDA 8100 and door are completed individually or collectively, the NARDA 8200 following leakage test must be performed with a survey instrument and it must be confirmed that the result meets...

  • Page 27: Wiring Diagram

    R-210D SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. NOTE: " " indicates components with potential above 250V. THERMAL CUT-OUT 95˚C (MG) 2ND. LATCH SWITCH NOISE FILTER COM. N.O. THERMAL CUT-OUT 125˚C (OVEN) 1ST. LATCH SWITCH Figure O-1 Oven Schematic-OFF Condition...

  • Page 28: Pictorial Diagram

    R-210D...

  • Page 29: Control Panel Circuit

    R-210D /50v /35v 3.3k 4.7k 4.7k /50v /16v LD16 LD24 LD15 LD23 LD14 LD22 LD34 RESET LD13 LD21 LD33 XOUT 4.7k 29 P13 28 P12 LD12 LD20 27 P11 HZ4A2 26 P10 LD11 LD19 LD32 INT0 25 P03 HZ6A3 LD10...

  • Page 30: Printed Wiring Board

    R-210D LD11 LD12 LD13 LD14 LD15 LD16 LD17 (J3) (J5) (J7) (JF) (JC) CN - B (JD) CN - A (J1) Figure S-3. Printed Wiring Board...

  • Page 31: Parts List

    R-210D PARTS LIST Note: The parts marked " " may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. REF. NO. PART NO. DESCRIPTION Q'TY CODE ELECTRIC PARTS 1- 1 QSW-MA137WRE0 1st. latch switch & 2nd. latch switch & stop switch...
  • Page 32 R-210D Note: The parts marked " " may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. REF. NO. PART NO. DESCRIPTION Q'TY CODE (JF) VRD-B12EF472J Resistor 4.7k ohm 1/4W RRLY-A111DRE0 Relay (JV12S-KT) RRLY-A094DRE0...
  • Page 33 R-210D OVEN AND CABINET PARTS 1-13 1-16 1-15 4-14 1-17 1-11 4-11 1-14 4-13 4-10 1-10 4-12 1-12 4-15...
  • Page 34 R-210D CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS Actual wire harness may be different than illustration.

  • Page 35: Packing And Accessories

    R-210D TOP PAD ASSEMBLY FPADBA377WRK0 PACKING AND ACCESSORIES DOOR PROTECTION SHEET POLYETHYLENG BAG SPADPA580WRE0 SSAKHA014WRE0 CABINET COVER OPERATION MANUAL SPADFA449WRE0 TURNTABLE TRAY MICROWAVE OVEN BOTTOM PAD ASSEMBLY FPADBA378WRK0 TURNRABLE SUPPORT INTO THE OVEN CAVITY PACKING CASE Not replaceable items. SPAKCD412WREZ...
  • Page 36 R-210D 2000SHARP CORP. (5S0.730E) Printed in Australia...

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