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FORM # EM-C120 (02/05)

SERVICE MANUAL SUPPLEMENT

for Model EM-C120

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 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.

(e)(i) A microwave leakage check to verify compliance with the Federal performance standard should be
       performed on each oven prior to release to the owner. (For U.S.A)
(e)(ii) A microwave leakage check to verify compliance with the Canadian Regulation, HEALTH AND WELFARE,

SOR/79-920 should be performed on each oven prior to release to the owner. (For CANADA)

  SUPPLEMENT OF
  SERVICE MANUAL      

Microwave Oven

EM-C160US

REFERENCE NO.

SM-640180

See the Service Manual of 

EM-C180US(SM-640179)

except the items described in this Service Manual.

PRODUCT CODE NO.  437-453-00

Summary of Contents for EM-C120

Page 1: ...erating 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 do...

Page 2: ...the area emitting the highest reading switch the meter to SLOW RESPONSE and take a reading for minimum of three 3 seconds We recommended the pattern outline shown below when the door surface is survey...

Page 3: ...ea sured with the following power output 1 1 Fill two beakers one liter of tap water respec tively 2 Use an accurate thermometer and measure each water temperature respectively 2 Place beakers side by...

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Page 5: ...ng to ground CHECKOUT PROCEDURE RESULT Normal reading Approximately 1 0 ohms Less than 1 ohm Approximately 83 ohms Normal reading Infinite ohms Infinite ohms Note Remove varnish of measured point PRIM...

Page 6: ...g consumable components will be replaced Maintenance light in window display indicates when accumulative cooking time reaches 1 250 hours Light 1 Magnetron Tube Part No 415 002 7702 2 Printed Circuit...

Page 7: ...t 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...

Page 8: ...istics 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 at...

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Page 10: ...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 shou...

Page 11: ...istics 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 at...

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Page 18: ...h Blue NC Inside Light Blue Interlock switch Orange White Pink NO Insde Red wire Transformer Transformer Red wire Red wire Red wire Filament Winding Filament Winding Lower Magnetron Magnetron Upper Up...

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