Summary of Contents for BGH 17260
-
Page 1: Microwave Oven
MICROWAVE OVEN SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT,READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MODEL: 17260... -
Page 2: Safety Precautions
SAFETY PRECAUTIONS This device is to be serviced only by properly qualified service personnel. Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be taken to avoid possible exposure to excessive microwave energy. PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY... -
Page 3: Table Of Contents
CONTENTS (Page) SAFETY PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Inside front cover SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-1 CAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1 INSTALLATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1... -
Page 4: Specifications
SPECIFICATIONS ITEM DESCRIPTION MODEL 17260 Power Requirement 220 Volts AC 50 Hz Single phase, 3 wire grounded Microwave 1350W Toast 800W Power Output 900 Watts full microwave power (IEC60705) Microwave Frequency 2450 MHz Magnetron 2M214 - 39F Timer 0 ~ 99 min... -
Page 5: Cautions
CAUTIONS Unlike other appliances, the microwave oven is MICROWAVE RADIATION high-voltage and high-current equipment. Personnel should not be exposed to the Though it is free from danger in ordinary use, microwave energy which may radiate from the extreme care should be taken during repair. magnetron or other microwave generating device if it is improperly used or connection. -
Page 6: Installations
INSTALLATIONS BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY. INSTALLING EARTHING INSTRUCTIONS 1. Empty the microwave oven and clean inside it with This microwave oven is designed to be used in a fully a soft, damp cloth. Check for damage such as earthed condition. -
Page 7: Operating Instructions
OPERATING INSTRUCTIONS FEATURES Control Easy-Clean See-Through Door Panel Oven Cavity Glass Turntable Toaster Indicator Light Slots Toaster Door Crumb Rotating Ring Tray Microwave Oven Toaster Safety Interlock System CONTROL PANEL MICROWAVE CONTROL AREA 1. DISPLAY. The Display includes a clock and indicators that tell 7. -
Page 8: Operating Sequence
OPERATING SEQUENCE The following is a description of component functions 7. AUTO WEIGHT DEFROST during oven operation. Desired Parar/ Desired defrost Comenzar 1. SETTING THE CLOCK weight Borrar category Parar/ Reloj Number Comenzar Borrar 8. AUTO COOK Desired Desired NOTE: You can set 12 hour clock or 24 hour clock Parar/ auto cook cooking... -
Page 9: Schematic Diagram
SCHEMATIC DIAGRAM... -
Page 10: Circuit Description
CIRCUIT DESCRIPTION power of microwave oven as POWER LEVEL. GENERAL DETAILS (refer to page 1-1) • The low voltage transformer supplies the necessary • One complete cycle of relay 3 is 22 seconds. voltage to the micom controller when power cord is plugged in. -
Page 11: Service Information
SERVICE INFORMATION TOOLS AND MEASURING INSTRUMENTS NECESSARY TOOLS NECESSARY MEASURING INSTRUMENTS Tools normally used for TV servicing are sufficient. • TESTER(VOLTS-DC, AC., Ohmmeter) Standard tools are listed below. • Microwave survey meter • Diagonal pliers - Holaday HI-1500 • Long nose pliers HI-1501 •... - Page 12 MEASUREMENT WITH OUTER CASE NOTES WHEN MEASURING REMOVED • Do not exceed meter full scale deflection. • The test probe must be removed no faster than • When you replace the magnetron, measure for 1 inch/sec (2.5 cm/sec) along the shaded area, microwave energy leakage before the outer case is otherwise a false reading may result.
-
Page 13: Measurement Of Microwave Power Output
MEASUREMENT OF MICROWAVE POWER OUTPUT • Microwave power output measurement is made with • The microwave power output P in watts is calculated the microwave oven supplied at its rated voltage and from the following formula: operated at its maximum microwave power setting with a load of (1000 ±... -
Page 14: Diode Removal
D. DOOR GROSS ASSEMBLY REMOVAL F. FAN MOTOR ASSEMBLY REMOVAL 1) Open the door. 1) Discharge the high voltage capacitor. 2) Remove the choke cover very carefully with a flat- 2) Disconnect the leadwire from fan motor, noise filter blade screwdriver. and high voltage capacitor. - Page 15 H. AIR DUCT ASSEMBLY REMOVAL J. REMOVING THE TURNTABLE MOTOR 1) Disconnect the leadwire from lamp and MGT 1) Remove the turntable. thermostat. 2) Remove the turntable shaft VERY CAREFULLY 2) Remove the mounting screw to the magnetron. with a slotted screwdriver. 3) Lay the unit down on its back.
- Page 16 K. PCB ASSEMBLY REMOVAL 1) Remove the control panel assembly from the cavity. (Refer to control panel assembly removal on previous page.) Latch Board 2) Remove screws which hold the PCB SUB ASS’Y to the control panel. 3) Disconnect the flat cable from the PCB SUB Primary Interlock Switch ASS’Y and take off the PCB SUB ASS’Y.
-
Page 17: Interlock Continuity Test
INTERLOCK CONTINUITY TEST WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS. TYPE NO.SZM-V 16-FA-63 OR VP-533A-OF FOR PRIMARY SWITCH TYPE NO.SZM-V 16-FA-62 OR VP-532A-OF FOR MONITOR SWITCH TYPE NO.SZM-V 16-FA-63 OR VP-533A-OF FOR SECONDARY SWITCH A. -
Page 18: Component Test Procedure
COMPONENT TEST PROCEDURE CAUTIONS 1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. - Page 19 COMPONENTS TEST PROCEDURE RESULTS Antenna Gasket Chassis Filament NOTE: When testing the magnetron, be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition. HIGH VOLTAGE Measure the resistance. Normal: Momentarily indicates CAPACITOR (Ohm-meter scale: Rx1000) several ohms, and...
- Page 20 COMPONENTS TEST PROCEDURE RESULTS FUSE Check for continuity of the fuse with an Normal Abnormal multi-meter. NOTE: If the fuse is blown, check the primary, the secondary, and the monitor switches, H.V.D. and H.V.C. before replacing the fuse. If the fuse is blown by improper switch operation replace the defective switch and the fuse at the same time.
- Page 21 COMPONENTS TEST PROCEDURE RESULTS Disconnect the 8 pin Check for P.C.B. connector. Cooking Start connector from P.C.B. (Refer to schemetic diagram) Cooking Start RELAY 3, RELAY 4 Relay 4 OF P.C.B. (Wire leads removed.) Note: Relay Relay 1 Relay 1: Turntable motor Oven lamp Relay 2: Fan motor Relay 3: Microwave...
-
Page 22: Troubleshooting
TROUBLESHOOTING WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL. CAUTIONS 1. Check grounding and cool this unit before checking for trouble. 2. - Page 23 (TROUBLE 1) The following visual conditions indicate a probable defective control circuit. 1. Incomplete segments. • Segment missing. • Partial segment missing. • Digit flickering (NOTE: Slight flickering is normal.) 2. Colon does not turn on or blink. 3. A distinct change in the brightness of one or more numbers in display. 4.
- Page 24 (TROUBLE 2) Microwave oven does not operate at all, Display window does not display any figures, and no input is accepted. CONDITION CHECK RESULT CAUSE REMEDY Malfunction of the Check continuity Replace fuse, 1. Fuse blows. Continuity. monitor switch. of monitor primary, monitor switch (with switches, and...
- Page 25 (TROUBLE 3) Display shows all figures set, but microwave oven does not start cooking while desired program times are set and START pad is touched. CONDITION CHECK RESULT CAUSE REMEDY Replace Defective Check continuity 1.Setting time No continuity. secondary switch. secondary switch.
- Page 26 (TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run. (Display operates properly) CONDITION CHECK RESULT CAUSE REMEDY No microwave Defective PCB Replace PCB Disconnect the No continuity. oscillation. assembly. assembly. wire leads from relay 2 and check continuity Continuity.
- Page 27 (TROUBLE 6) When toaster operates, strange code can be seen on the display and stop with beep sound. CONDITION CHECK RESULT CAUSE REMEDY Check continuity Defective 1. “F-1” code. No continuity. Replace thermistor of thermistor. thermistor Continuity. Replace toaster Check the No continuity.
-
Page 28: Exploded View
#EV# EXPLODED VIEW INTRODUCTION LATCH BOARD PARTS OVEN CAVITY PARTS INTERIOR PARTS DOOR PARTS BASE PLATE PARTS TOASTER PARTS... -
Page 29: Door Parts
#EV# DOOR PARTS 13552A 15006A 13581A 13536A 13213A 14890A 14026A 14970A 250201 WTP004 268712 250202 13551A 23790D 249401... -
Page 30: Oven Cavity Parts
#EV# OVEN CAVITY PARTS WTT021 33112U 33052A WTT010 33390G 34370T 36549S 35889A WTP013... - Page 31 #EV# LATCH BOARD PARTS WSZ085 56912B 466001 466003 43500A 55262A 466001 44510A...
- Page 32 #EV# INTERIOR PARTS WSZ002 568771 50FZZA 56411A 56201A 56930V WTT024 WTT028 56549F 54974S 268711 WSZ002 55900A WTT037 50CZZH WSZ002 56324A 56851D WSZ002 54810C WTT028...
- Page 33 #EV# BASE PLATE PARTS 56170D 63302A 65006A 647781 WTT021 WTT028 WSZ002 WTT021...
- Page 34 #EV# TOAST PARTS 75993M WTT021 76322A 76930V WTT028 WTT021 768711 WTP004 73550L 74970A 73551A 766001 74510L 73551B 73740A 73213A 73552A...
-
Page 35: Schematic Diagram Of P.c.b
SCHEMATIC DIAGRAM OF P.C.B... -
Page 36: Printed Circuit Board
PRINTED CIRCUIT BOARD... - Page 37 PRINTED CIRCUIT BOARD...
- Page 38 April, 2005 P/NO : 3828W5S5209 Printed in Korea...