R Microwave Oven Service Manual RCS10PBDA RCS10MPA RCS10A RCS10MPSA RCS10MPA RFS12MPSA RCS10MPSA RCS10SW2A RFS12G RFS12SW2A RFS12MPSA RFS12G CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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 A) Do not operate or allow the oven to be operated with the door open.
CONTENTS CONTENTS (Page) (Page) SAFETY PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Inside front cover SAFETY PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Inside front cover SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SPECIFICA SPECIFICATIONS SPECIFICATIONS ITEM ITEM MODEL MODEL Power Requirement Power Requirement Power Output Power Output Microwave Frequency Microwave Frequency Magnetron Magnetron Timer Timer Outside Dimensions Outside Dimensions Cavity Dimensions Cavity Dimensions Net Weight Net Weight Shipping weight Shipping weight Control Complement Control Complement DESCRIPTION RCS10MPA / RCS10MPSA / RCS10A RFS12MPSA / RFS12G DESCRIPTION RCS10SW2A RCS10MPA / RCS10PBDA RCS10MPSA 120Volts VoltsAC AC60 60Hz Hz 12
CAUTIONS Unlike other appliances, the microwave oven is high-voltage and high-current equipment. Though it is free from danger in ordinary use, extreme care should be taken during repair. MICROWAVE RADIATION Personnel should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating device if it is improperly used or connection.
INSTALLATIONS BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY. INSTALLING GROUNDING INSTRUCTIONS 1. Empty the microwave oven and clean inside it with a soft, damp cloth. Check for damage such as misaligned door, damage around the door or dents inside the cavity or on the exterior. For personal safety, this appliance must be fully grounded at all times. In the event of an electrical short circuit, grounding reduces the risk of electrical shock.
OPERATING INSTRUCTIONS FEATURES FEATURES Splatter Shields Window DoorWindow Screen Door Screen Electronic Control Electronic Control Door Open Button Safety Door Lock System Turntable Safety Door Lock System Rotating Ring CONTROL PANEL CONTROL PANEL HOLD 0% DEFROST 20% MEDIUM 50% MED-HI 70% TIME ENTRY STOP RESET START 1 2 3 4 5 6 7 8 9 0 Display Display Some items in display can be seen but will not glow. Some items in display can be seen but will not glow.
OPERATING INSTRUCTIONS FEATURES Window Door Screen Electronic Control Safety Door Lock System CONTROL PANEL Display Some items in display can be seen but will not glow. Pads 8 TIME ENTRY Use to enter heating time without changing preprogrammed number pads. Pads 1-0 Use to begin heating with preprogrammed times and power levels or to enter times for “Manual Time Entry” cooking. HOLD 0%, DEFROST 20%, MEDUIM 50%, MED-HI 70% Use to select power level. Oven can heat at full or reduced power.
OPERATING INSTRUCTIONS FEATURES FEATURES Splatter Shields Window Door Screen Window Door Screen Electronic Control Electronic Control Door Open Button Safety Door Lock System Turntable Safety Door Lock System Rotating Ring CONTROL PANEL CONTROL PANEL Display Display Some items in display can be seen but will not glow. Some items in display can be seen but will not glow.
OPERA TING INSTRUCTIONS FEATURES FEATURES Splatter Shields Window Door Screen Window Door Screen Electronic Control Electronic Control Door Open Button Safety Door Lock System Turntable Safety Door Lock System Rotating Ring CONTROL PANEL CONTROL PANEL Display Some items in display can be seen but will not glow. Display Some items in display can be seen but will not glow.
OPERATING INSTRUCTIONS FEATURES FEATURES Splatter Shields Door Screen Window DoorWindow Screen Electronic Control Electronic Control Door Open Button Safety Door Lock System Turntable Safety Door Lock System Rotating Ring CONTROL PANEL CONTROL PANEL Display Display Some items in display can be seen but will not glow. Some items in display can be seen but will not glow.
OPERATING INSTRUCTIONS FEATURES FEATURES Window Door Screen Window Door Screen Electronic Control Electronic Control Safety Door Lock System Safety Door Lock System CONTROL PANEL CONTROL PANEL TIME POWER ENTRY LEVEL - Display Display Some items in display can be seen but will not glow. Some items in display can be seen but will not glow. QTY 2X Pads Pads TIME ENTRY TIME ENTRY Pads 1-0 + 8 89 90 0 RFS12G Use to enter heating time without changing preprogrammed number pads.
Cooking Displays Cooking Displays Shows when power is connected to oven. Open and close Shows when power is connected to oven. Open and close door to clear. door to clear. READY when oven ovencontrol controlwill willaccept acceptentries. entries. READY shows shows when Appears after oven door is opened and closed. Appears after oven door is opened and closed. 33:33 heating time. time.
Operation CAUTION Preprogrammed Times and Cook Level All preprogrammed pads arrive set at full power. To avoid fire, do not dry newspapers or clothes in microwave oven. Interrupting Option: Double Digit Option: Single Digit Pads Operation • Open oven door to interrupt operation. Oven fan continues to operate. Close door and press START pad to resume oven operation. • Press STOP/RESET pad to interrupt operation. Display continues to show countdown time.
PROGRAMMING Preprogrammed Number Pads Multiple Heating Stages Oven has 10 preprogrammed number pads. Follow instructions below to program heating times and power levels for customized cooking. Follow instructions below to program oven to perform 3 consecutive heating cycles without interruption. 1. Open oven door. ¥ If door is closed or STOP/RESET pad is pressed before finishing programming sequence, oven exits programming mode. 1. Open oven door.
4. Press START pad to advance to next option. See table for options. User Options Follow the instructions below to customized the microwave ovenÕs operation. End-of-cycle signal, maximum heating time and other options can be changed to meeting your cooking needs. 5. Press number pad (0,1-3) to change option. 6. Press START pad to save changes. ¥ Repeat steps 4-6 to change additional options. 1. Open oven door.
SCHEMATIC DIAGRAM 4-11
CIRCUIT DESCRIPTION • A high voltage of approximately 2100 volts AC is generated in the secondary of the high voltage transformer which is increased by the action of the high voltage diode and charging of the high voltage capacitor. • The negative 4,000 Volts DC is applied to the filament of the magnetron. GENERAL DETAILS • The low voltage transformer supplies the necessary voltage to the micom controller when power cord is plugged in.
SERVICE INFORMATION TOOLS AND MEASURING INSTRUMENTS NECESSARY TOOLS NECESSARY MEASURING INSTRUMENTS Tools normally used for TV servicing are sufficient. Standard tools are listed below.
MEASUREMENT WITH OUTER CASE REMOVED NOTES WHEN MEASURING ¥ Do not exceed meter full scale deflection. ¥ The test probe must be removed no faster than 1 inch/sec (2.5 cm/sec) along the shaded area, otherwise a false reading may result. ¥ The test probe must be held with the grip portion of the handle. A false reading may result if the operator's hand is between the handle and the probe.
MEASUREMENT OF MICROWAVE POWER OUTPUT • Microwave power output measurement is made with the microwave oven supplied at its rated voltage and operated at its maximum microwave power setting with a load of (1000±5) g of potable water. • The water is contained in a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and an outside diameter of approximately 190mm. • The oven and the empty vessel are at ambient temperature prior to the start of the test.
Remove Remove choke choke cover cover D. PCB ASSEMBLY REMOVAL 1) Remove the control panel assembly from the cavity. (Refer to control panel assembly removal on previous page.) 2) Remove screws which hold the PCB SUB ASSÕY to the control panel. 3) Disconnect the flat cable from the PCB SUB ASSÕY and take off the PCB SUB ASSÕY PCBAsm Sub Asm PCB Sub Control Panel Control Panel Key Membrane Remove Remove door door Doorseal sealplate plate Door Button Spring Door Open Button Release Lever E.
F. MAGNETRON REMOVAL G. REMOVING THE STIRRER FAN MOTOR 1) Disconnect the leadwire from the magnetron. 2) Carefully remove the mounting screws holding the magnetron and the waveguide. 3) Remove the magnetron ASS’Y until the tube is clear from the waveguide. NOTE: 1. When removing the magnetron, make sure its dome does not hit any adjacent parts, or it may be damaged. 2.
H. HIGH VOLTAGE TRANSFORMER REMOVAL H. HIGH VOLTAGE TRANSFORMER 1) Discharge the high voltage capacitor. REMOVAL 2) Disconnect the leadwire from magnetron, high voltage K. INTERLOCK SYSTEM 1) INTERLOCK MECHANISM K. INTERLOCK SYSTEM The door lock mechanism is a device which has transformer, andvoltage capacitor. 1) Discharge the high capacitor. 3) Remove the screw holding the high voltage 2) Disconnect the leadwire from magnetron, high voltage transformer to the baseplate. transformer, and capacitor.
INTERLOCK CONTINUITY TEST WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS. TYPE NO. SZM-V 21-FC-93 FOR PRIMARY SWITCH TYPE NO. SZM-V 16-FD-62 OR V-16-2C 25 FOR MONITOR SWITCH TYPE NO. SZM-V 16-FD-63 OR V-16-3C 25 FOR SECONDARY SWITCH B. SECONDARY INTERLOCK SWITCH TEST A. PRIMARY INTERLOCK SWITCH TEST Disconnect the wire lead from the secondary switch.
COMPONENT TEST PROCEDURE COMPONENT TEST PROCEDURE CAUTIONS CAUTIONS 1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE 1. OUTER DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE CASE FROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH OUTER CASE FROM THE UNIT.
COMPONENTS TEST PROCEDURE RESULTS Antenna Antenna Gasket Gasket Chassis Chassis Filament 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 CAPACITOR HIGH VOLTAGE DIODE NOTE : Some inexpensive meters may indicate infinite resistance in both direction. Measure the resistance. (Ohm-meter scale: Rx1000) ¥ Terminal to terminal.
COMPONENTS RELAY 3 TEST PROCEDURE Check for continuity of relay 3 an ohm-meter. (Remove wire leads from relay 3 and operate the unit.) RESULTS POWER LEVEL 1 2 3 4 5 6 7 8 9 10 3 sec 4 sec 5 sec 6 sec 7 sec 8 sec 9 sec 10 sec 11 sec 12 sec 9 sec 8 sec 7 sec 6 sec 7 sec 4 sec 3 sec 2 sec 1 sec 0 sec Relay 3 BLOWER MOTOR (Wire leads removed) Measure the resistance. (Ohm-meter scale: R x 100) Normal: Approx. 14~21 ohm Abnormal: Infinite or several K-ohm.
TROUBLESHOOTING SHOOTING TROUBLE WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF 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 THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL. MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.
(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. One or more digits in the display are not lighting. 5. Display indicates a number different from one touched, for example, key in 5 and 3 appears in the display. 6.
(TROUBLE 2) Oven does not operate at all, Display window does not display any figures, (TROUBLE 2)and Oven does isnot operate at all, Display window does not display any figures, no input accepted. and no input is accepted. CONDITION CONDITION 1. Fuse blows. 1. Fuse blows. CHECK CHECK Check continuity continuity ofCheck monitor of monitor switch (with switch (with door closed). door closed). RESULT RESULT Continuity. Continuity. CAUSE CAUSE Malfunction of the Malfunction of the monitor switch.
(TROUBLE 3) Display shows all figures set, but oven does not start cooking while desired (TROUBLE 3)program Display times showsare all set figures but pad ovenisdoes not start cooking while desired and set, START touched. program times are set and START pad is touched. CONDITION CONDITION CHECK CHECK 1. Setting time 1. Setting time does not count does not down when count down when touching START touching START pad. pad.
(TROUBLE 5) No microwave oscillation even though oven lamp and blower motor run. (Display operates properly)even though oven lamp and fan motor run. (TROUBLE 5) No microwave oscillation (Display operates properly) CONDITION CHECK RESULT CAUSE REMEDY CONDITION CHECK RESULT CAUSE REMEDY No microwave oscillation. No microwave oscillation. Disconnect the wire leads from Disconnect the relay 3 and check wire leads from continuity relay 3 relay 2ofand check continuity (Operate the unit) of relay 2.
#EV# EXPLODED VIEW INTRODUCTION MODEL : RCS10PBDA RFS12G OVEN CAVITY PARTS INTERIOR PARTS BASE PLATE PARTS DOOR PARTS LATCH BOARD PARTS CONTROL PANEL PARTS 6-1
#EV# EXPLODED VIEW INTRODUCTION MODEL : RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12MPSA RFS12SW2A OVEN CAVITY PARTS INTERIOR PARTS BASE PLATE PARTS DOOR PARTS LATCH BOARD PARTS CONTROL PANEL PARTS 6-2
#EV# DOOR PARTS MODEL : RCS10A RCS10MPA RCS10MPSA RCS10PBDA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G 1013 1005 1004 1385 1002 1000 W136 1006 1007 W108 1384 1009 W206 1386 W207 6-3 W105
#EV# CONTROL PANEL PARTS MODEL : RCSPBDA RFS12G 2012 W102 2381 2006 W130 2000 2005 2400 6-4
#EV# CONTROL PANEL PARTS MODEL : RCS10PBDA 2012 W102 2381 2002 2006 W130 2000 2005 2400 6-5
#EV# CONTROL PANEL PARTS MODEL : RCS10A RCS10MPA 2004 W102 2381 2006 2002 W130 2000 6-6
#EV# CONTROL PANEL PARTS MODEL : RCS10SW2A RCS10MPSA RFS10SW2A RFS12MPSA RFS12SW2A 2004 W102 2381 2006 W130 2000 6-7
#EV# OVEN CAVITY PARTS MODEL : RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G W158 5045 W109 3001 W121 W109 W121 W105 3009 W109 5024 3004 9000 W109 7037 W108 6-8
#EV# LATCH BOARD PARTS MODEL : RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G 4001 W102 4003 4009 W117 4008 4002 4004 4000 6-9
#EV# INTERIOR PARTS MODEL : RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G 5014 W108 5010 5201 W101 3381 W109 W108 5102 W109 5016 W136 9000 W101 3028 W101 3031 W109 5104 W108 W108 5103 W101 5202 W108 W101 W109 W109 5059 5203 W105 5041 5009 5001 5067 W104 5020 5000 5302 5046 5061 5019 5018 W101 5051 W101 5008 6-10
#EV# BASE PLATE PARTS MODEL : RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G 6001 W121 6000 3901 W162 3902 3026 W121 6013 W108 6-11
