Garland EM-C160 Service Manual Supplement

Manual is about: Garland Microwave Oven User Manual

Summary of EM-C160

  • Page 1

    Form # em-c180 (02/05) service manual supplement for model em-c180 microwave oven caution warning to service technicians 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 o...

  • Page 2: Caution

    Caution for microwave energy emission on every service call. A check for micro- wave energy emission must be made according to the following 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 milli...

  • Page 3

    - 3 - - table of contents - adjustment procedures ............................................. 1 specifications ............................................................ 2 power output measurement ...................................... 2 precautions and repair service tips .........................

  • Page 4

    - 2 - 2.Specifications microwave output ................ 1,800w to 180w frequency ........................... 2,450mhz power supply ....................... 208v, 60hz rated current ...................... 13 amp. Safety device ...................... Thermal protector(magnetron) 150°c(270°f)open (ther...

  • Page 6

    - 6 - 6. Test procedures and troubleshooting caution -disconnect the power supply cord from the wall outlet whenever 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 transf...

  • Page 7

    - 7 - measure the resistance: across two terminals with an ohm-meter on highest scale. Component high-voltage capacitor including internal bleeder resistor high-voltage diode measure the resistance: across two terminals with an ohm-meter on highest scale. Checkout procedure result normal reading: mo...

  • Page 8

    - 8 - measure the resistance between terminals of f p c c o n n e c t o r a f t e r r e m o v i n g i t f r o m s101.(figure 10) note - when reconnecting the fpc connector, make sure the holes on the connector are properly inserted in hook of the plastic fastener in s101. Matrix circuit for touch ke...

  • Page 9

    - 9 - check voltage at s104 and s105 after remov- ing each connector (female) from power circuit board. Pin no.3 (ground) and 4,5, 1,2 at s105. Pin no.1 and 2 at s104. Caution: for your safety, proceed with the test only after removing the wire leads from the pri- mary winding of high voltage transf...

  • Page 10

    - 10 - power with normal voltage is applied. Place a cup of water inside microwave oven shorted replace b. Troubleshooting condition trouble check result remedy * “time”,”1”,”0” ,”0” and “start” keys are touched fuse(10a) blows off immediately step down transformer no display cooking time h.V capaci...

  • Page 11

    - 9 - thermistor (on duct) sensies a temperature of 120°c or higher. Display e-21 e-31 thermistor (on magnetron) or t h e r m i s t o r ( o n d u c t ) i s shorted. Trouble other symptom solution check and remove the cause of the cav- ity fire or abnormal overheating. This error function will be can...

  • Page 12

    - 12 - 0 1000 2000 3000 4000 5000 6000 7000 8000 0 10 20 30 40 50 60 temperature Ž resistance kƒ¶ “hint” procedure for determing whether the upper magnetron circuit or lower magnetron circuit is defective. Symptom:one magnetron does not work giving less than normal heat. Caution: make sure that cab...

  • Page 13

    - 13 - 7. Disassembly instructions - the oven must be disconnected from the electrical outlet when making replace- ments, repairs, adjustment or continuity checks. Before proceeding with any re- pair, work , wait at least 1 minute, until the capacitor in the high voltage area has fully discharged. A...

  • Page 14

    - 14 - f. Changing power supply cord (see exploded view on page 15) (1) unfasten 1 screw for ground and pull out the 2 wires of the power cord from the terminal plate. (2) remove 1 screw for the bottom bracket of the cord bushing. (3) install the new power supply cord with the reverse procedure of a...

  • Page 15

    - 15 - k. Additional functions the following functions can be completed by the key operation described below. The accumulative cooking time and the number of door opening /closings can be observed. The type and level of the buzzer sound can be selected. The “display of remaining cooking time when co...

  • Page 16

    - 16 - maintenance: the microwave ovens are designed, manufactured, and tested for years of dependable operation. However, the oven may require service from time to time if the consumable components listed below are not replaced at the appropriate time. For protection from unexpected service calls a...

  • Page 17

    - 17 - 8. Exploded view and parts list main body parts-1 note: all component have special characteristics for safety and must be replaced using parts listed in this manual. All service on m/w ovens should be performed by a qualified technician using approved testing equipment. Customers should not a...

  • Page 18

    - 18 - note: all component have special characteristics for safety and must be replaced using parts listed in this manual. All service on m/w ovens should be performed by a qualified technician using approved testing equipment. Customers should not attempt replace component marked with a symbol..

  • Page 20

    - 20 - main body parts-2 note: all component have special characteristics for safety and must be replaced usnig parts listed in this manual. All service on m/w ovens should be performed by a qualified technician using approved testing equipment. Customers should not attempt replace component marked ...

  • Page 21

    - 21 - note: all component have special characteristics for safety and must be replaced using parts listed in this manual. All service on m/w ovens should be performed by a qualified technician using approved testing equipment. Customers should not attempt replace component marked with a symbol..

  • Page 28

    - 28 - printed in japan wiring of high voltage circuit brown(c inside) wiring of switches monitor switch interlock switch door sensing switch orange(c) brown white yellow purple purple blue(nc inside) l i g h t blue orange white pink(no inside) (no) (nc) white ...