GE LMAB1240ST Manuel d'utilisateur

MICROWAVE OVENSERVICE MANUALMODEL: LMAB1240STCAUTIONBEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.P/NO : 3828W5S5057December,

4-4SCHEMATIC DIAGRAM (II) *Check the Rating Model No. (ADD Noise filter)IMPORTANT SAFETY NOTE: THE SHADED AREAS ON THIS SCHEMATIC DIAGRAM INCORPORATE

GENERAL DETAILS• The low voltage transformer supplies the necessaryvoltage to the micom controller when power cord isplugged in.• When the door is clo

NECESSARY TOOLSTools normally used for TV servicing are sufficient.Standard tools are listed below.• Diagonal pliers• Long nose pliers• Phillips screw

MEASUREMENT WITH OUTER CASEREMOVED• When you replace the magnetron, measure formicrowave energy leakage before the outer case isinstalled and after al

5-3A. OUTER CASE REMOVAL1) Disconnect the power supply cord from the outlet.2) Remove the screws from the rear of the case.The outer case must be move

D. PCB ASSEMBLY REMOVAL1) Remove the control panel assembly from thecavity. (Refer to control panel assembly removalon previous page.)2) Remove screws

F. MAGNETRON REMOVAL1) Disconnect the lead wire from the magnetron.2) Carefully remove the mounting screws holding themagnetron and the waveguide.3) R

H. HIGH VOLTAGE TRANSFORMERREMOVAL1) Discharge the high voltage capacitor.2) Disconnect the lead wire from magnetron, highvoltage transformer, and cap

A. PRIMARY INTERLOCK SWITCH TESTWhen the door is opened slowly, an audible clickshould be heard at the same time or successivelyat intervals and the l

5-8COMPONENT TEST PROCEDURECAUTIONS1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THEOUTER CASE FROM THE UNIT. PROCEED WITH THE

This device is to be serviced only by properly qualified service personnel.Consult the service manual for proper service procedures to assure continue

5-9COMPONENTS TEST PROCEDURE RESULTSHIGH VOLTAGECAPACITORHIGH VOLTAGEDIODENOTE :Some inexpensive metersmay indicate infiniteresistance in both directi

5-10COMPONENTS TEST PROCEDURE RESULTSRELAY 2FAN MOTOR(Wire leads removed)TURNTABLEMOTOR(Wire leads removed)123456789104 sec6 sec8 sec10 sec12 sec14 se

5-11TROUBLE SHOOTINGCAUTIONS1. Check grounding before checking for trouble.2. Be careful of the high voltage circuit.3. Discharge the high voltage cap

5-121. Incomplete segments.• Segment missing.• Partial segment missing.• Digit flickering (NOTE: Slight flickering is normal.)2. Colon does not turn o

5-13CONDITION CHECK RESULT CAUSE REMEDY1. Fuse blows. Continuity.No continuity.Continuity.Shorted contact atthe primary switch.Replace fuse,primary, m

5-14(PROBLEM 3) Display shows all figures set, but oven does not start cooking while desiredprogram times are set and START pad is touched.(PROBLEM 4)

5-15CONDITION CHECK RESULT CAUSE REMEDYNo microwaveoscillation.No continuity.Continuity.Defective P.C.BassemblyReplace P.C.BassemblyDisconnect thewire

EXPLODED VIEW6-1INTRODUCTIONDOOR PARTSCONTROL PANEL PARTSBASE PLATE PARTSOVEN CAVITY PARTSLATCH BOARD PARTSINTERIOR PARTS#EV#

DOOR PARTS6-213552A13213A13352A13581A14970A14026A15006A13536A13551A#EV#

CONTROL PANEL PARTS6-324781M23551A23550D24510L24970A23551B268711WTP01824930D#EV#

CONTENTS(Page)SAFETY PRECAUTIONS ---------------------------------------------------------------------Inside front coverSPECIFICATIONS ---------------

OVEN CAVITY PARTS6-436549S33052AWTP01333390GWTT010WSZ18533112U35889A#EV#

LARCH BOARD PARTS6-5WSZ08546600146600346600143500A#EV#

INTERIOT PARTS (I)6-6568771WSZ002WSZ002WSZ002948503WSZ002WSZ002WSZ002WTT02856411A56930V56549F54974SWTT03755900A56324A54810CWTT02850CZZH56851D50FZZA569

INTERIOT PARTS (II)6-7568771WSZ002WEB001WSZ002948503WSZ002WSZ002WEB001WTT02856411A56930V56549F54974SWTT03755900A56324A54810CWTT02850CZZH56851D50FZZA56

BASE PLATE PARTS6-856170D63302A63303AWTT021WSZ002WTT028647781948502#EV#

SPECIFICATIONS1-1This microwave oven is designed for household use only.It is not recommended for commercial purposes.DESCRIPTIONLMAB1240ST120 Volts A

CAUTIONS2-1• DO NOT operate on a 2-wire extension cord duringrepair and use.• NEVER TOUCH any oven components or wiring duringoperation.• BEFORE TOUCH

INSTALLATION3-1INSTALLING1. Empty the microwave oven and clean inside it witha soft, damp cloth. Check for damage such asmisaligned door, damage aroun

OPERATING INSTRUCTIONS4-1FEATURESCONTROL PANEL 1. DISPLAY: The display includes a clock and indicatorsthat tell you the time of day, cook time setting

4-2OPERATING SEQUENCEThe following is a description of component functionsduring oven operation.1. SETTING THE CLOCK2. CANCEL FUNCTIONTouch the STOP

SCHEMATIC DIAGRAM (I) *Check the Rating Model No.4-3IMPORTANT SAFETY NOTE: THE SHADED AREAS ON THIS SCHEMATIC DIAGRAM INCORPORATE SPECIAL FEATURES