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Garland EM-C180 - page 1
FORM # EM-C180 (02/05) SER VICE MANUAL SUPPLEMENT for Model EM-C180 Micr owave Oven C A U T I O N W A R NI N G T O S ER VI C E TE C H N I C I A NS PRECA UTIONS T O BE OBSER VED BEFORE AND DURING S ER VICING T O A V OID POSSIBL E EXPOSUR E T O EXCESSIVE MICR O W A VE ENERGY (a) Do not operate or allow the oven to be operated with the door open. (b) ...
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Garland EM-C180 - page 2
CA UTION For microwave energy emission On every service call. A check for micro- wave energy emission must be made according to the f ollo wing manner . Measurement of energy emission Measurement must be made with the microwave oven operating at its maximum output and containing a load of 275 ± 15 milliliters of tap water initially at 20 °± 5 ° ...
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Garland EM-C180 - page 3
- 3 - - T ABLE OF CONTENTS - Adjustment Procedures ............................................. 1 Specifications ............................................................ 2 P ower output Measurement ...................................... 2 Precautions and Repair Ser vice Tips ....................... 2 Circuit Diagram ........................... ...
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Garland EM-C180 - page 4
- 2 - 2.SPECIFICA TIONS Microwave output ................ 1,800W to 180W F requency ........................... 2,450MHz P ow er supply ....................... 208V , 60Hz Rated current ...................... 13 Amp . Saf ety Device ...................... Ther mal protector(Magnetron) 150°C(270°F)Open (Thermostat) 80°C(144°F)Close Ther mistor ( ...
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Garland EM-C180 - page 5
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Garland EM-C180 - page 6
- 6 - 6. TEST PROCEDURES AND TR OUBLESHOOTING CA UTION -DISCONNECT THE PO WER SUPPL Y CORD FROM THE W ALL OUTLET WHENEVER REMOVING THE CABINET FROM THE UNIT . PROCEED WITH TESTS ONL Y AFTER DISCHARGING THE HIGH V OL T A GE CAP ACIT ORS AND REMO VING THE LEAD WIRES ON THE PRIMAR Y WINDING OF THE HIGH V OL T A GE TRANSFORM- ERS FOR LO WER AND UPPER M ...
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Garland EM-C180 - page 7
- 7 - Measure the resistance: Across two terminals with an ohm-meter on highest scale. COMPONENT HIGH-V OL T A GE CAP A CIT OR Including internal bleeder resistor HIGH-V OL T A GE DIODE Measure the resistance: Across two terminals with an ohm-meter on highest scale. CHECKOUT PR OCEDURE RESUL T Normal reading: Momentarily indicates several ohms, and ...
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Garland EM-C180 - page 8
- 8 - Measure the resistance between terminals of FPC connector after removing it from S101.(Figure 10) NO TE - When reconnecting the FPC connector , make sure the holes on the connector are properly inser ted in hook of the plastic fastener in S101. MA TRIX CIRCUIT FOR T OUCH KEY BO ARD FPC CONNECT OR COMPONENT T OUCH KEY BO ARD CHECK OUT PR OCEDU ...
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Garland EM-C180 - page 9
- 9 - Check voltage at S104 and S105 after remov- ing each connector (f emale) from pow er circuit board. Pin No .3 (Ground) and 4,5, 1,2 at S105. Pin No .1 and 2 at S104. CA UTION: F or your saf ety , proceed with the test only after removing the wire leads from the pri- mar y winding of high voltage transf or mer. T est procedures: a) Make sure t ...
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Garland EM-C180 - page 10
- 10 - P ower with normal voltage is applied. Place a cup of water inside microwave oven Shor ted Replace B. TR OUBLESHOO TING CONDITION TR OUBLE CHECK RESUL T REMED Y * “TIME”, ”1”, ”0” , ”0” and “ST ART” keys are touched Fuse(10A) blows off immediately Step down T ransformer No displa y cooking time H.V Capacitor Connection of ...
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Garland EM-C180 - page 11
- 9 - Thermistor (on duct) sensies a temperature of 120 ° C or higher . Displa y E-21 E-31 Thermistor (on Magnetron) or thermistor (on Duct) is shor ted. T rouble Other Symptom Solution Check and remove the cause of the cav- ity fire or abnormal overheating. This error function will be cancelled when the power cord is unplugged. Check f or short-c ...
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Garland EM-C180 - page 12
- 12 - 0 1000 2000 3000 4000 5000 6000 7000 8000 0 1 02 03 0 4 05 06 0 Temper atur e Resistance K¶ “HINT” PROCEDURE FOR DETERMING WHETHER THE UPPER MAGNETR ON CIRCUIT OR LO WER MA GNETR ON CIRCUIT IS DEFECTIVE. SYMPT OM:One magnetron does not work giving less than nor mal heat. Caution: Make sure that cabinet (outer wr ap) and rear ...
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Garland EM-C180 - page 13
- 13 - 7. DISASSEMBL Y INSTR UCTIONS - THE O VEN MUST BE DISCONNECTED FROM THE ELECTRICAL OUTLET WHEN MAKING REPLACE- MENTS, REP AIRS, ADJUSTMENT OR CONTINUITY CHECKS. BEFORE PROCEEDING WITH ANY RE- P AIR, WORK , W AIT A T LEAST 1 MINUTE, UNTIL THE CAP A CIT OR IN THE HIGH V OL T A GE AREA HAS FULL Y DISCHARGED. A. REMO VING INTERLOCK SWITCH (See F ...
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Garland EM-C180 - page 14
- 14 - F . CHANGING PO WER SUPPL Y CORD (See e xploded view on page 15) (1) Unf asten 1 screw f or ground and pull out the 2 wires of the power cord from the terminal plate. (2) Remov e 1 scre w f or the bottom brac ket of the cord bushing. (3) Install the new power supply cord with the re verse procedure of abo v e (1) to (2). W ARNING: F or chang ...
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Garland EM-C180 - page 15
- 15 - K. ADDITIONAL FUNCTIONS The following functions can be completed by the k ey oper ation described below . The Accumulative cooking time and the number of door opening /closings can be observed. The T ype and lev el of the buzz er sound can be selected. The “display of remaining cooking time when cooking is temporarily stopped due to door o ...
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Garland EM-C180 - page 16
- 16 - Maintenance: The microwa ve o v ens are designed, manuf actured, and tested f or years of dependab le operation. Howe ver , the ov en ma y require ser vice from time to time if the consumable components listed below are not replaced at the appropriate time. F or protection from unexpected ser vice calls and undue inconvenience, we recommend ...
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Garland EM-C180 - page 17
- 17 - 8. EXPLODED VIEW AND P AR TS LIST Main body P arts-1 NO TE: All component ha ve special characteristics f or saf ety and must be replaced using par ts listed in this manual. All ser vice on M/W ovens should be perf or med by a qualified technician using approv ed testing equipment. Customers should not attempt replace component marked with a ...
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Garland EM-C180 - page 18
- 18 - NO TE: All component hav e special characteristics f or safety and m ust be replaced using par ts listed in this manual. All service on M/W ovens should be perf ormed by a qualified technician using appro ved testing equipment. Customers should not attempt replace component marked with a symbol. ...
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Garland EM-C180 - page 19
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Garland EM-C180 - page 20
- 20 - Main body P arts-2 NO TE: All component have special char acteristics f or saf ety and must be replaced usnig par ts listed in this manual. All ser vice on M/W ov ens should be perf ormed by a qualified technician using approv ed testing equipment. Customers should not attempt replace component marked with a symbol. ...
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Garland EM-C180 - page 21
- 21 - NO TE: All component hav e special characteristics for saf ety and must be replaced using par ts listed in this manual. All service on M/W ovens should be perf ormed b y a qualified technician using approv ed testing equipment. Customers should not attempt replace component marked with a symbol. ...
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Garland EM-C180 - page 22
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Garland EM-C180 - page 23
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Garland EM-C180 - page 24
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Garland EM-C180 - page 25
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Garland EM-C180 - page 26
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Garland EM-C180 - page 27
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Garland EM-C180 - page 28
- 2 8 - Prin ted in J AP AN Wiri ng of Hig h v ol tage Cir cu it Brow n(C Insid e) Wiri ng of Swit ches Mon ito r swi tch Int erloc k s wit ch Doo r se nsin g s wi tch Ora ng e(C ) Br own Wh ite Y ell o w Purple Purple Blue (NC Insid e) Light Bl ue Or an ge Wh ite Pink (NO Insid e) (N O) (N C) Wh ite ? ...
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