Sharp R-430EK Service Manual

SUPPLEMENTAL SHARF? SERVICE MANUAL R-430BK R-430BW R-430BD S38Mi 07R430BE MICROWAVE OVEN MODELS R-430BK/R-430BW / R-430BD In the interest of us

R-430BK R-430BW R-430BD TEST PROCEDURES Procedure Letter Component Test G . Touch Control Panel Assembly Test (Confinued) When testing is c

R-430BK EEY TEST PROCEDURES .’ Procedure Letter Component Test 1. Continued Procedures to be taken when the foil pattern of the printed wiring

R-430BK R-430BW R-430BD TEST PROCEDURES Procedure Letter Component Test J Compu Defrost Test 1. Place one cup of water in the center of t

R-430BK EEY Procedure Letter Component Test L . AH Sensor Test Checking the initial sensor cooking condition 1. The oven should be plug

R-430BK R-430BW R-430BD Procedure Letter Component Test L. Checking the Control Unit (Confinued) 6. Disconnect the wire leads to the prima

R-430BK E%dl OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units as shown in the touch control pan

R-430BK R-430BW R-430BD The I/O signals of the LSI (IZA866DR) is detailed in the following table. ( Pin No. 1 Signal 1 I/O 1 Description

R-430BK R-430BW R-430BD Signal I/O Description Pin No. 22 P30 OUT Signal to sound Buzzer (2.0 kHz). 0.1 sec. B: completion sound 23 P31 O

R-430BK R-430BW R-430BD Pin No. Signal I/O Description 80-84 PIO-PI4 OUT Used for Initial balancing of the bridge circuit (absolute humidi

, . .- Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of the cir- cuits. When handling th

R-430BK R-430BW R-430BD ( 1 a (b) ( ) C (d) ( ) e Do not operate or allow the oven to be operated with the door open. Make the followin

R-430BK R-430BW R-430BD COMPONENT REPLACEMENT/ADJUSTMENT PROCEDURE icrowave ovens contain circuitry capable of producing very high voltage

R-430BK E%F ABSOLUTE HUMIDITY SENSOR CIRCUIT Structure of Absolute Humidity Sensor the sensor cooking of the unit. The absolute humidity

R-430BK R-430BW R-430BD AH SENSOR DUCT REMOVAL 1. 2. 3 . 4. 5. 6. Disconnect the power supply cord. Open the oven door and block it open.

R-430BK R-430BW R-430BD AH SENSOR ORIENTATION 8t HARNESS ROUTING AH Sensor Orientation Mounting Screw AH densor AH Sensor Duct Figure l-1 6 O

R-430BK R-430BW R-430BD MICROWAVE MEASUREMENT PROCEDURE After adjustment of the door, interlock and monitor switches are completed individu

I 0 n In u 0 m D I n?_l- ha n__- -If*! - __ uoor uosea, LOOK u-r Lonamon MONITOR FUSE I BLK I 1 RED MAGNETRON TEMP. RED CAVITY TEMP. FUSE I--

R-430BK R-430BW R-430BD - - - - - -0 I CE I ’ 92 A , 00’ I I I I I I I I I I I I I I I I I I I I I I I I I I I I 24

1 2 3 4 5 6 AC1 2OV 60Hz TURNTABLE MOTOR OVEN LAMP FAN MOTOR MICRO I , ~ w R4 27 ICI01 Q2 2SB1238 Dl-D4 4 :I b/ 1 - 1 T' 4 lIESI D5 D6 R5 4.7k

R-430BK R-430BW R-430BD A B C D E F G ~ H 1 2 3 4 5 6 Printed Wiring Board of Power Unit 1 2 3 4 5 6 27

SERVICE MANUAL SHARI? Microwave Ovens R=430BK/R=430BW/R=43OBD Foreword This manual has been prepared to provide Sharp Electronics Corporatio

R-430BK R-430BW R-430BD Contact your nearest SHARP Parts Distributor to order. For location of SHARP Parts Distributor, Please call Toll-

R-430BK R-430BW R-430BD Ref No. Part No. Q Description Qty Code Control Panel 3-l / CPWBFBOllMRUO- M Control unit' 1 BK 3-1A QCNCMA4

R-430BK R-430BW R-430BD A A Ref No. Part No. Q Description Qty Code Door 4- 0 CDORFB217MRKO M Door assembly(R-43OBK) 1 BE 4- 0 CDORFB2

r R-430BK R-430BW R-430BD 4 I A z -I 3 1 I I I 1 4 5 I I I 6 Cavity Assembly 3 Q / Q 5-3 : 0 2-a 9 1-12

R-430BK R-430BW R-430BD 1 2 3 4 5 6 4 - 3 - - J - 1 - E - F - G - H Control Panel Assembly Q 4-o Door Assembly r---- --- ---------~-___- -----

. . ., . .: _:^ Wire Harnesses * Actual harnesses may be different than illustrations. 4 * TRAY HOLDER a OPERATlON MANUAL d> * PACKING

R-430BK R-430BW R-430BD SHARR ‘980 SHARP CORP. (3M2.70E) Printed in U.S.A.

R-430BK R-430BW R-430BD WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of producing very high voltage and current

R-430BK R-430BW R-430BD SPECIFICATIONS Item Power Requirements Description 120 Volts 14 Amperes 1650 Watts 60 Hertz Single phase, 3 wire grounde

R-430BK R-430BW R-430BD Key Unit Layout a. Indicators. b. Lighted digital display. c. Custom Help. Features user friendly communications d

The following is a description during oven ope ration. OPERATION DESCRIPTION OF OPERATING SEQUENCE of compon Sensor Cooking Condition ent

R-430BK R-430BW R-430BD When troubleshooting the microwave oven, it is helpful to follow the sequence of operation in performing the check

R-430BK R-430BW R-430BD Procedure Letter Component Test G . Touch Control Panel Assembly Test The touch control panel consists of circuits