Table of Contents
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SERVICING ...................................................................................................................................... 2
CAUTION, MICROWAVE RADIATION ............................................................................................. 3
WARNING ......................................................................................................................................... 3
PRODUCT DESCRIPTION ............................................................................................................... 3
OPERATING SEQUENCE ................................................................................................................ 4
DOOR SWITCHES ........................................................................................................................... 4
OUTPUT POWER TEST PROCEDURE ........................................................................................... 5
TEST PROCEDURES ....................................................................................................................... 6
DIGITAL ANALOGUE CONTROL PANEL ASSEMBLY ................................................................... 8
COMPONENT REPLACEMENT ....................................................................................................... 12
SCHEMATIC DIAGRAM ................................................................................................................... 13
WIRING DIAGRAM ........................................................................................................................... 14
PARTS LIST ...................................................................................................................................... 17
EXPLODED ILLUSTRATION ............................................................................................................ 20
SERVICE MANUAL
R
COOKING CONTROL
WITH COOK & DEFROST GUIDE
ILLUMINATED
TIMER
2
3
4
1
5
6
7
0
8
9
30
1 0
30
1 1
25
1 2
20
1 3
1 5
1 4
E
TABLE OF CONTENTS
SHARP CORPORATION
211M -
MICROWAVE OVEN
MODEL
R-211(W)/(BL)M
R-211(G)M
R-211(B)M
In the interests of user-safety the oven should be restored
to its original condition and only parts identical to those
specified should be used.
1
S1892R211M///
Page
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Related Manuals for Sharp R-211(W)M
Summary of Contents for Sharp R-211(W)M
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Page 1: Table Of Contents
OUTPUT POWER TEST PROCEDURE ................... 5 TEST PROCEDURES ........................6 DIGITAL ANALOGUE CONTROL PANEL ASSEMBLY ..............8 COMPONENT REPLACEMENT ....................... 12 SCHEMATIC DIAGRAM ........................13 WIRING DIAGRAM ........................... 14 PARTS LIST ............................17 EXPLODED ILLUSTRATION ......................20 SHARP CORPORATION 211M -... -
Page 2: Servicing
Sharp recommend that wherever possible, fault-finding is carried out with the supply disconnected. In some cases, it may be necessary to connect the supply with the cover removed to carry out fault investigation in the control circuitry. -
Page 3: Caution Microwave Radiation
CAUTION / WARNING WARNING CAUTION Servicing and repair work must be carried out only by MICROWAVE RADIATION trained service engineers. Do not become exposed to radiation from the The parts marked '*' on the parts list and schematic magnetron or other parts conducting microwave en- diagram have voltages in excess of 250V. -
Page 4: Operating Sequence
OPERATING SEQUENCE OFF CONDITION HIGH, MEDIUM HIGH, MEDIUM, MEDIUM Closing the door activates all door interlock switches (moni- LOW, LOW COOKING tored latch switch and latch switch). When the microwave oven is preset for variable cooking power, the line voltage is supplied to the power transformer IMPORTANT intermittently within a 26-second time base through the When the timer knob is at "0"... -
Page 5: Output Power Test Procedure
The power output of this oven is rated using the method specified by IEC-705. Full details of how to carry out this procedure can be found in the Sharp Technical Training notes which is available from Sharp Parts Centre (part number SERV-LITMW01). -
Page 6: Test Procedures
TEST PROCEDURES COMPONENT TEST 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. In this service manual, troubleshooting by replacement is described according to the symptoms indicated. 1. - Page 7 TEST PROCEDURES COMPONENT TEST 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.
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Page 8: Digital Analogue Control Panel Assembly
DIGITAL ANALOGUE CONTROL PANEL OUTLINE OF CONTROL PANEL 5) Buzzer Circuit Control Unit The buzzer is responsive to signals from the LSI to Control unit consists of LSI, power source circuit, synchro- emit audible sounds (key touch sound and nizing signal circuit, ACL circuit, buzzer circuit, encoder completion sound). - Page 9 DIGITAL ANALOGUE CONTROL PANEL DESCRIPTION OF LSI LSI(IZA882DR) The I/O signal of the LSI(IZA882DR) are detailed in the following table. Pin No. Signal Description Auto clear terminal. Signal is input to reset the LSI to the initial state when power is applied. Temporarily set to "L"...
- Page 10 DIGITAL ANALOGUE CONTROL PANEL Pin No. Signal Description ON/OFF time ratio in Micro Magnetron high-voltage circuit driving signal. cooking (a. 32second time base) To turn on and off the cook relay (RY2). In 100% POWER operation, the sig- MICRO nals hold "L" level during microwave COOK cooking and "H"...
- Page 11 DIGITAL ANALOGUE CONTROL PANEL SERVICING 1. Precautions for Handling Electronic Components controls (sensor-related ones included) of the This unit uses CMOS LSI in the integral part of the touch control panel while keeping it connected circuits. When handling these parts, the following to the oven.
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Page 12: Component Replacement
COMPONENT REPLACEMENT INNER DOOR FILM DOOR REPLACEMENT Removal 1. CARRY OUT 3D CHECKS. 1. Tear the door film from the door panel. 2. Remove choke cover taking care not to break 2. Now the door film is free. clips by inserting an iron plate (thickness of about 0.5mm) or flat type screw driver into the gap between Installation the choke cover and door panel to free the engaged... -
Page 13: Schematic Diagram
SCHEMATIC DIAGRAM CIRCUIT SUBJECT TO CHANGE R-211 () M 230-240V~50Hz WITHOUT NOTICE. DOOR CLOSED R-211 () 230V~50Hz COOK OFF MICROWAVE CONDITION BLU /18 BRN /18 G-Y /18 EARTH NOISE FILTER UNIT 0. 22 µF /250V 680KΩ/0. 5W NOSIE SUPPRESSION COIL 0. -
Page 14: Wiring Diagram
WIRING DIAGRAM 211M -... - Page 15 WIRING DIAGRAM 211M -...
- Page 16 WIRING DIAGRAM LD10 LD11 LD12 LD13 LD14 LD15 LD16 LD18 LD24 LD17 LD23 LD22 LD19 LD21 LD20 (JA) (JD) WH - A WH - A (J1) Figure S-3. Printed Wiring Board 211M -...
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Page 17: Parts List
PART LIST The parts marked ∆ may cause undue microwave exposure Note: The parts marked “ ” are used in voltage more than 250V. “§” MARK: SPARE PARTS-DELIVERY SECTION ELECTRICAL PARTS REF NO PART NO DESCRIPTION Q'TY CODE RH-DZA048WRE0 U H.V. rectifier FPWBFA308WRE1 U Noise filter QACCBA030WRE2 U Power supply cord RV-MZA270WRE0 U Magnetron... - Page 18 J Zener diode (HZ12A3) 3- 2 HPNLCG001URR0 U Control panel [R-211(G)M] 3- 2 HPNLCL001URR0 U Control panel [R-211(BL)M] 3- 2 HPNLCW002URR0 U Control panel [R-211(W)M] 3- 2 HPNLCB001URR0 U Control panel print (R-211(B)M) 3- 3 JBTN-A011URF0 U Open button [R-211(G)M] 3- 3 JBTN-A073URF0...
- Page 19 PART LIST The parts marked ∆ may cause undue microwave exposure Note: The parts marked “*” are used in voltage more than 250V. “§” MARK: SPARE PARTS-DELIVERY SECTION DOOR PARTS REF NO PART NO DESCRIPTION Q'TY CODE ∆ CDORFB001URK0 U Door assembly (B) ∆...
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Page 20: Exploded Illustration
EXPLODED ILLUSTRATION CABINET AND UNIT CHASSIS PARTS 1-10 4-10 1-13 7-11 7-12 7-12 1-11 3-10 1-14 4-11 4-12 4-13 NOTE: In the event of removing the turntable motor cover this part should be refitted using screw connection: LX-CZA030WRE0 211M -... - Page 21 EXPLODED ILLUSTRATION CONTROL PANEL PARTS 3 - 9 3 - 9 3 - 9 3 - 2 3 - 8 3 - 4 3 - 7 3 - 1 3-1D 3 - 5 3 - 6 3 - 3 3 - 4 DOOR PARTS 211M -...
- Page 22 EXPLODED ILLUSTRATION Actual wire harness may be different than illustration. PACKING AND ACCESSORIES PACKING PAD KIT CPADBA186WRKO DOOR PROTECTION SHEET SPADPA531WRE0 POLYETHYLENG BAG SSAKHA047WRE0 ROLLER STAY TRAY PAD SPADPA496WRE1 TURNTABLE TRAY TRAY PAD SPADPA496WRE1 INTO THE OVEN CAVITY UNDERNEATH TRAY PACK PACKING CASE R-211M(W): SPAKCA154URR0 R-211M(B): SPAKCA155URR0...
- Page 23 SHARP COPORATION Printed in U.K. 211M -...