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SERVICE MANUAL
Read this manual carefully, especally precaution on microwave enery, an follow the procedure strictly,
careless servicing and testing may expose yourself to the microwave energy leakage.
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.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other
microwave source, and make repairs as necessary:
(1)Interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other
damage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse.
(c) Before turning on microwave power for any service test or inspection within the microwave generating
compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
integrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation
and transmission systems shall be repaired replaced, or adjusted by procedures described in this manual
before the oven is released to the owner.
Microwave oven
Foreword
PRECAUTIONS
FILE NO.
EM-C1100UK
EM-C1100SD
Model No
Pro.code No
EM-C1100SD 437 524 00
EM-C1100UK 437 524 01
REFERENCE NO.
SM-6410009-00
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Summary of Contents for Sanyo EM-C1100UK
- Page 1 EM-C1100SD Model No Pro.code No EM-C1100SD 437 524 00 EM-C1100UK 437 524 01 Foreword Read this manual carefully, especally precaution on microwave enery, an follow the procedure strictly, careless servicing and testing may expose yourself to the microwave energy leakage.
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Page 2: Table Of Contents
- TABLE OF CONTENTS - Adjustment procedure........1 Test Procedures and Troubleshooting.... 4 - 10 Specifications..........2 Disassembly Instructions......11 - 14 Poweroutput Measurement......2 Exploded view and Parts List...... 15 - 22 Precautions and Repair Service Tips.... 2 Overall Circuit Diagram......23 - 24 Circuit Diagram..........3 CAUTION (All service adjustments must be made for mini-... -
Page 3: Specifications
2. SPECIFICATIONS Microwave output....... 1,100W to 110W A.SINCE NERARLY 4,000 VOLTS EXISTS IN SOME Frequency........2,450MHz CIRCUITS OF THIS MICROWAVE OVEN, REPAIRS Power supply......230V, 50Hz SHOULD BE CARRIED OUT WITH GREAT CARE. Rated current......8 Amp. B.TO AVOID POSSIBLE EXPOSURE TO MICROWAVE Safety device..... -
Page 4: Circuit Diagram
5.CIRCUIT DIAGRAM * Caution: The voltage between filament leads of magnetron is about 3.3VA.C, but the the filament carries 4 KV/DC high voltage with respect to ground. Never touch these leades with bare hand during operation. -
Page 5: Caution
6. TEST PROCEDURES AND TROUBLESHOOTING Primary winding Secodary CAUTION winding - DISCONNECT THE POWER SUPPLY CORD FROM THE WALL. OUTLET WHENNEVER REMOVING THE CABINET FROM THE UNIT. PROCEED WITH TESTS ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITORS AND REMOVING THE LEAD WIRES ON THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANS- FORMER FOR MAGNETRON. - Page 6 COMPONENT CHECOUT PROCEDURE RESULT Measure the resistance: Across two terminals with Normal reading: an ohm-meter on highest scale. Momentarily indicates several ohms, and gradually to 10 meg-ohms HIGH-VOLTAGE from bigining. CAPACITOR Including internal beeder resistor Figure 7 Measure the resistance: Across two terminals Normal reading: with an ohm-meter on highest scale.
- Page 7 COMPONENT CHECKOUT PROCEDURE RESULT Measure the resistance between terminals of FPC When When not TOUCH KEY connector after removing it from S101. (Figure 10) touched touched Resitance BOARD Less than More than Value NOTE 1 K ohms 1 meg ohms - When reconnecting the FPC connector, make sure the holes on the connector are properly inserted in When checking the...
- Page 8 WARNING: Primary winding When removing the cabinet, you must disconnect the power supply cord from the wall outlet for your safety. Only the checkout procedure below needs the power supply on.TAKE GRATE CARE to avoid possible electrical shock. For your safety, proceed with the test only after removing the wire reads from the pri- mary windings of the high voltage transforemer.
- Page 9 B.TROUBLESHOOTING CONDITION TROUBLE CHECK RESULT REMENDY Step down Shorted Replace Power with normal Transformer voltage is applied. Place a cup of water inside the oven. H.V Capacitor Shorted Replace *” “ , “1”, “0”, “0” Fuse(10A) blow and “ “ keys off immediately are touched.
- Page 10 B.TROUBLESHOOTING CONDITION TROUBLE CHECK RESULT REMENDY Low microwave Magnetron Poor oscillation Replace output Uneven heating Rotation of Gear motor Replace Antenna does not operate C.ERROR INDICATION The Display will show an error indication for self-diagonosis as follows. “E” means that a service technician is required. “U”...
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Page 11: Disassembly Instructions
7.DISASSEMBLY INSTRUCTIONS control circuit board, high voltage transformer, high voltage capacitor, high voltage diode, fuse diode or -THE OVEN MUST BE DISCONNECTED FROM THE magnetron. ELCTRICAL OUTLET WHEN MAKING REPLACE - - If the high voltage diode is defective, replace not only TMENTS, REPAIRS, ADUSTMENT OR CONTINUTY the high voltage diode but also the fuse diode. - Page 12 HINT FOR LAMP CHANGE Box wrench Before removing the bulb access panel, pull out the main-plug. Change the faulty bulb and secure the bulb access panel. Plug the cord back in and Parts base check operation. H.CHANGING POWER SUPPLY CORD For EM-C1100SD Blower motor (See exploded view on page 18)
- Page 13 J.REMOVING DOOR Remove 3 hex nuts securing the upper hinge, remove 3 hex nuts securing the lower hinge and remove 1 special screw securing the door arm (rocated at the bottom of the door sash). NOTES - After replacing the door, check for microwave ene- rgy leakage with a leakage detector.
- Page 14 Insertion of Thermistor assembly to the Magnetron Magnetron Thermistor Assenbly Insert the Thermistor Assy on the 3rd fin of the Magnetron Waveguide -13-...
- Page 15 L.ADITIONAL FUNCTIONS -14-...
- Page 16 Maintenance: The microwave are designed, manufactured, and tested for years of depentable operetion. However, the oven may require service from time to time if the consumable components listed below are not replaced at the apporopriate time. for protection from unexpected service calls and undue inconvenience, we recommend that the user has the listed parts replaced at the intervals below, (at custmer cost).
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Page 17: Exploded View And Parts List
8.EXPLODED VIEW AND PATRS LIST Main body parts Parts marked with this sign are supplied with Parts marked with this sign have special high voltage exceeding 250V Characterstics important for microwave leakage. When replacing any of these parts use only Manufacturers specified parts. - Page 18 13 SD 14 SD Parts marked with this sign are supplied with Parts marked with this sign have special high voltage exceeding 250V Characterstics important for microwave leakage. When replacing any of these parts use only Manufacturers specified parts. -17-...
- Page 19 Parts marked with this sign are supplied with Parts marked with this sign have special high voltage exceeding 250V Characterstics important for microwave leakage. When replacing any of these parts use only Manufacturers specified parts. -18-...
- Page 20 Main body parts Key No Service parts No Description Spec. Q’ty 1 617 230 9897 FRAME SUS430 T0.6 2 617 234 2375 FRAME PLATE ASS’Y 3 617 077 6356 LAMP SOCKET OKUNO PA0 2A250VT150 4 617 149 3009 LAMP 240/250V 25W E-14 5 617 230 7794 LAMP PLATE 6 617 120 4230...
- Page 21 Main body Parts Key No. Service Parts No. Description Spec Q’ty 31 617 178 1182 LATCH LEVER 32 617 004 5230 MICRO SWITCH MONITOR V-5220D-502 33 617 160 0438 MICRO SWITCH INTERLOCK YAMATAKE V-5930D-013 34 617 004 3724 MICRO SWITCH DOOR SENSINGV-5330DK 35 415 002 6804 MAGNETRON 2M248J(M) 36 617 231 0244...
- Page 22 Door Parts Key No Service parts No Description Spec. Q’ty 617 231 0428 COVER ASS’Y 617 230 9941 DOOR BASE ABS CE10 617 230 9965 DOOR PANEL 617 121 5489 PACKING 617 229 6999 DOOR ASS’Y 617 228 9809 DOOR PANEL 617 178 0840 CHOKE DIELECTRIC FR-PET...
- Page 23 Control panel parts Parts marked with this sign have special Characterstics important for microwave leakage. When replacing any of these parts use only Manufacturers specified parts. Key No Service parts No Description Spec. Q’ty 617 224 8745 KNOB ASS’Y 617 231 0435 COVER ASS’Y 617 230 1860 KEY BOARD...
- Page 24 CONTROL CIRCUIT BOARD Tp-1 Tp-5 Tp-6 Tp-2 Tp-4 Tp-3 Ground Figure 17 -23-...
- Page 25 9.OVERALL CIRCIUT DIAGRAM -24-...
- Page 26 -25-...
- Page 27 -26-...
- Page 28 Mar. 2000 SANYO Electric Co., Ltd OSAKA, JAPAN -27-...