DAEWOO ELECTRONICS KOC-995T0S Service Manual Download

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DAEWOO ELECTRONICS CO., LTD

686, AHYEON-DONG MAPO-GU
SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX : DWELEC K28177-8
CABLE : “DAEWOOELEC”
E-mail : [email protected]
FAX : 032) 510-7630
TEL : 032) 510-7618

PRINTED DATE : OCT. 1999

Summary of Contents for KOC-995T0S

Page 1: ...Service Manual Microwave Oven Model KOC 995T0S KOC 995T0S11 DAEWOO ELECTRONICS CO LTD S M No C995T0S110...

Page 2: ...epairs 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...

Page 3: ...certified oven unit is found to servicing a microwave emission check should be performed prior to servicing the oven 1 inform the manufacturer importer or assembler 2 repair the unit at no cost to the...

Page 4: ...COMBINATION 2 950W Simultaneous 1 550W Sequentional MICROWAVE ENERGY OUTPUT 1 000W IEC705 1 000W IEC705 MICROWAVE FREQUENCY 2 450MHz 2 450MHz OUTSIDE DIMENSIONS W X H X D 526 x 345 x 496 mm 20 7 x 13...

Page 5: ...4 EXTERNAL VIEW 1 OUTER DIMENSION...

Page 6: ...ned so that light can pass through but not the microwave 4 Top heater Turns on when convection grill and combi cooking is selected 5 Oven lamp Automatically turns on during oven operating 6 Safety int...

Page 7: ...gh but not the microwave 4 Top heater Turns on when convection grill and combi cooking is selected 5 Oven lamp Automatically turns on during oven operating 6 Safety interlock system 7 Control panel 8...

Page 8: ...ype which if damaged must be repaired with cable of same type Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person 6 Examine the oven after unpacking for any damage su...

Page 9: ...8 CONTROL PANEL 1 KOC 995T0S...

Page 10: ...9 CONTROL PANEL 2 KOC 995T0S11...

Page 11: ...ing repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stopped and electric charge remains in the high voltage capacitor When replac...

Page 12: ...move guide wind assembly 1 Remove two screws for earthing and for fixing to rear plate 2 Remove the noise filter from the guide wind 3 Pull the fan from the motor shaft 4 Remove two screws which secur...

Page 13: ...te 2 Remove the H V transformer 3 Reverse the above steps for reassembly 4 To remove high voltage capacitor 1 Remove a screw which secure the grounding ring terminal of the H V diode and the capacitor...

Page 14: ...ODE PART NAME DESCRIPTION QTY REMARK 1 3512508000 GUIDE AIR WELD AS KOC 961C0S 1 2 3515400200 VALVE DAMPER SBHG 1 T0 5 1 3 3517501000 PROTECTOR DAMPER SILICON RUBBER 1 4 3519000100 SOLENOID DC DET SL...

Page 15: ...cure the thermostat to the bracket motor 14 Reverse the above steps for reassembly REF CO PART CODE PART NAME DESCRIPTION QTY REMARK 1 3963513700 MOTOR SHADED POLE 230V 50HZ OEM 10DWC2 C07 1 2 7S312X4...

Page 16: ...e steps for reassembly Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave leakage Whenever repair work is carried out on magnetron c...

Page 17: ...E PART NAME DESCRIPTION QTY REMARK B01 3516719230 CONTROL PANEL PC 1 B02 3511603100 DECORATOR C PANEL STS304 T0 6 H L 1 B03 3515501400 WINDOW DISPLAY PMMA IF 850 1 SMOG B04 3513404620 KNOB VOLUME ABS...

Page 18: ...OR SEAL AS KOC 971C0S 1 A02 3513101100 HOOK POM 1 A03 3515101300 SPRING HOOK PW1 1 A04 3517004080 BARRIER SCREEN O TEMPERED GL T3 2 1 MIRROR A05 3512204020 FRAME DOOR PC 1 A06 3511603200 DECORATOR DOO...

Page 19: ...To reduce gap located on part D Loosen a screw on interlock switch assembly located top of oven body Following steps are same as step 3 Small gap may be acceptable if the microwave leakage does not e...

Page 20: ...tray motor cover parts from the base plate 2 Remove two screws which secure the tray motor 14 To remove grill heater assembly 1 Release two hex nuts holding the Grill Heater Assembly to top and side...

Page 21: ...sed the hook pushes the latch lever downward The latch lever presses the button of the interlock monitor switch to bring it under OFF condition and presses the button of the secondary interlock switch...

Page 22: ...nals and power cord before check parts listed below NOTE CONDITION CHECK RESULT CAUSE REMEDY Fuse blows Continuity COM NC COM NC No Continuity No Continuity Continuity Continuity 0 infinite or Approx...

Page 23: ...t All these switches must be replaced at the same time please refer to 7 Interlock Mechanism and Adjust for adjustment instructions NOTE CONDITION CHECK RESULT CAUSE REMEDY Grill heater is not heated...

Page 24: ...cts of RELAY RY1 or open relay coil REMEDY Replace Replace Replace Replace Replace Replace Replace Replace No microwave oscillation Check continuity of high voltage fuse Check continuity of high volta...

Page 25: ...interlock and D O M switch Check D C voltage being supplied to RELAY RY3 coil Malfunction of secondary interlock and D O M switch Defective touch control circuit Faulty contacts of RELAY RY3 or open...

Page 26: ...normally but no display shows 8 Display obviously jumps in time while counting down 9 Display counts down noticeably too fast while cooking 10 Display does not show the time of day when clear button i...

Page 27: ...button key contacts with a multimeter 1 PROGRAM COOK button between 4 and 15 2 TIME DEFROST button between 8 and 14 KOC 995T0S DEFROST button between 8 and 14 KOC 995T0S11 3 COMBI button between 6 and...

Page 28: ...ater to the vessel the load is immediately placed on the center of the shelf which is in the lowest normal position 4 Microwave power is switched on 5 Heating time should be exactly A seconds Heating...

Page 29: ...s opened and when the door is closed 3 Monitor interlock switch 1 Disconnect the lead wire connecting the primary interlock switch and interlock monitor switch from primary interlock switch terminal 2...

Page 30: ...on the door cabinet door seem door viewing screen the exhaust air vents and the suction air vents Measuring should be in a counter clockwise direction at a rate of 1 in sec If the leakage of the cabi...

Page 31: ...h the ohmmeter set on the highest resistance scale measure the resistance across the diode terminals Reverse the meter leads and again observe the resistance reading Meter with 6V 9V or higher voltage...

Page 32: ...31 WIRING DIAGRAM...

Page 33: ...32 SCHEMATIC DIAGRAM...

Page 34: ...33 SCHEMATIC DIAGRAM...

Page 35: ...34 SCHEMATIC DIAGRAM...

Page 36: ...35 EXPLODED VIEW AND PARTS LIST 1 KOC 995T0S 1 EXPLODED VIEW...

Page 37: ...S 1 19 3510801000 CABINET P C M T 0 6 1 20 7113401011 SCREW TAPPING T1 TRS 4 10 MFZN 5 21 35113A5Q5J CORD POWER ASSY 3 1 5 KOC 970T1S 1 22 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 2 23 3518605001 NOI...

Page 38: ...ASSY KOC 991C0S 1 65 7112401011 SCREW TAPPING T1 TRS 4 8 MFZN 3 66 3510601500 BRACKET MOTOR SHADED SBHG 1 T0 8 1 67 3963513700 MOTOR SHADED POLE OEM 10DWC2 C07 1 68 7051400811 SCREW MACHINE PAN 4 8 SW...

Page 39: ...38 EXPLODED VIEW AND PARTS LIST 2 KOC 995T0S11 1 EXPLODED VIEW...

Page 40: ...NG T1 TRS 4 10 MFZN 5 21 35113A5Q5J CORD POWER ASSY 3 1 5 KOC 970T1S 1 22 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 2 23 3518605001 NOISE FILTER DWLF MO5 1 24 7122401211 SCREW TAPPING T2S TRS 4 12 MFZ...

Page 41: ...2 69 441B629071 FAN SA1D 80 T0 5 1 70 3514400410 PIPE A1100BR 1 71 3511404000 COVER INSULATOR SA1D 80 T0 7 1 72 3511800400 FAN CONVECTION SA1D 80 T0 5 1 73 75627W40X1 SPECIAL SCREW NUT FLANGE M4 MFZN...

Page 42: ...rmal voltage 2 Voltage check Key check point 1 5 Micom Pin 6 Display Pin Check method KOC 995T 0S KOC 995T0S11 LVT DMR 881FS1 Terminal Voltage 1 3 230VAC 50Hz 6 7 14 0 VAC 7 8 14 0 VAC 9 10 2 0 VAC NO...

Page 43: ...TPUT IN PIN NO Grid 1 doesnt come on Grid 1 G1 4 7 13 Grid 2 doesnt come on Grid 2 G2 10 16 Grid 3 doesnt come on Grid 3 G3 14 18 Grid 4 doesnt come on Grid 4 G4 17 17 Grid 5 doesnt come on Grid 5 G5...

Page 44: ...heating of upper heater When touching GRILL button oven lamp turns on fan motor and turntable motor rotate and cook indicator in the dis play comes on without heating CAUSE Relay 4 RY4 does not operat...

Page 45: ...erate Check method 7 Case of no rotating of rotisserie motor KOC 995T0S11 Only When touching ROTISSERIE button oven lamp turns on fan motor and turntable motor rotate and cook indicator in the display...

Page 46: ...er does not stop Check method 9 Case of appearring Err6 on the display Check method KOC 995T 0S KOC 995 T2S STAGE POINT A POINT B Door opened Open 5 VDC Door closed Closed GND KOC 995T 0S KOC 995T0S11...

Page 47: ...46 P C B CIRCUIT DIAGRAM 1 PCB CIRCUIT DIAGRAM...

Page 48: ...ELECTRO EC2 RSS 25V 1000 UF CEXF1E102V 1 C ELECTRO EC3 RSS 35V 3300 UF CEXF1V332V 1 C ELECTRO EC4 EC5 RSS 50V 220 UF CEXF1H221V 2 C ELECTRO EC6 RS 50V 10 UF CEXE1H100A 1 TRANSISTOR Q1 KTA1270Y TZTA12...

Page 49: ...4Z270J 3 R ARRAY RA1 RA2 RA3 8P 7 1 8 100K J RA 88X104J 3 DIODE ZENER ZD1 MTZ J 4 7B DZUZ4R7BSB 1 DIODE ZENER ZD2 MTZ J 3 0B DZUZ3R0BSB 1 DIODE ZENER ZD3 MTZ J 5 6B DZUZ5R6BSB 1 DIODE ZENER ZD4 MTZ J...

Page 50: ...XF1E102V 1 C ELECTRO EC3 RSS 35V 3300 UF CEXF1V332V 1 C ELECTRO EC4 EC5 RSS 50V 220 UF CEXF1H221V 2 C ELECTRO EC6 RS 50V 10 UF CEXE1H100A 1 TRANSISTOR Q1 KTA1270Y TZTA1270Y 1 TRANSISTOR Q2 Q11 KTC3198...

Page 51: ...88X104J 3 DIODE ZENER ZD1 MTZ J 4 7B DZUZ4R7BSB 1 DIODE ZENER ZD2 MTZ J 3 0B DZUZ3R0BSB 1 DIODE ZENER ZD3 MTZ J 5 6B DZUZ5R6BSB 1 DIODE ZENER ZD4 MTZ J 12C DZUZ12BSC 1 DIODE ZENER ZD5 MTZ J 24VB 1W DZ...

Page 52: ...ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC E mail G7F00E web dwe co kr FAX 032 510 7630 TEL 032 510 7618 PRINTED DATE OCT...

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