User manual LG MS-4580-MRC

[. . . ] Internal Use Only Website: http://biz. lgservice. com LIGHT OVEN "SolarDOM" SERVICE MANUAL MODEL: MP9485FR CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62270002 March, 2010 Printed in Korea 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. 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. [. . . ] When mounting the door assembly to the oven assembly, be sure to adjust the door assembly parallel to the chassis. Also adjust so the door has no play between the inner door surface and oven frame assembly. If the door assembly is not mounted properly, microwaves may leak from the clearance between the door and the oven. Copyright © 2007 LG Electronics. Only for training and service purposes 5-4 LGE Internal Use Only H. FAN MOTOR ASSEMBLY / REMOVAL 1) Remove controller assembly, bracket assembly, power cord, latch board-R from upper. 2) Disconnect the leadwire from fan motor, latch board-R and noise filter. 3) Remove the three screws holding the fan motor assembly to the oven cavity. 4) Remove the fan motor assembly to the upper plate. J. REMOVING THE TURNTABLE MOTOR 1) Remove the metal tray. 2) Remove the turntable shaft VERY CAREFULLY. The turntable base cover is easily removed by pinching the six parts with a wire cutting. 5) Disconnect the leadwire from the turntable motor terminals. 6) Remove the screw securing the turntable motor to the oven cavity assembly. 7) After repairing the motor, rotate the removed turntable motor cover. 8) Fit the turntable motor cover's projecting part to the base plate slit and fasten a screw. 9) The taptite screw shall be used when a turntable motor cover is secured with a screw. Remove the wire lead from the turntable motor VERY CAREFULLY. Be sure to grasp the connector, not the wires, when removing I. HIGH VOLTAGE CAPACITOR, FUSE, TRANSFORMER AND DIODE REMOVAL 1) Discharge the high voltage capacitor. 2) Disconnect the leadwire from transformer, magnetron, Fuse and capacitor. 3) Remove the screw holding the transformer and remove the high voltage diode earth screw. Taptite Screw Wire Leads Turntable Motor LGE Internal Use Only 5-5 Copyright © 2007 LG Electronics. Only for training and service purposes K. [. . . ] Fan motor, c-motor or oven lamp, turntable motor, rotisserie motor do not turn on. No continuity. Defective P. C. B assembly. Defective oven lamp, turntable motor. . Replace P. C. B assembly. Replace oven lamp, turntable motor. Continuity. Check fan motor, c-motor. Check oven lamp, turntable motor. Abnormal Abnormal Normal. (TROUBLE 4) Oven seems to be operation but little heat is produced in oven load. [. . . ]