Samsung M1777 Service Manual
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Samsung M1777 Service Manual

Samsung M1777 Service Manual

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SERVICE
MICROWAVE OVEN
SEF
M ICROWAVE OVEN
M 1777(W HITE)
1. Precaution
2. Specifications
3. Operating Instructions
4. Disassembly and Reassembly
5. Alignment and Adjustments
6. Troubleshooting
7. Easy Sensor Calibration M ethods and Action Points
8. Exploded View s and Parts List
9. PCB Diagrams
10. Schematic Diagrams
Manual
CONTENTS

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  • Page 1 M ICROWAVE OVEN M 1777(W HITE) SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 6. Troubleshooting 7. Easy Sensor Calibration M ethods and Action Points 8. Exploded View s and Parts List 9.
  • Page 2 (e) A Microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner. Samsung Electronics...
  • Page 3 10. Service technicians should remove their watches while repairing an MWO. 16. Always connect a test instrument's ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics...
  • Page 4 Samsung Electronics...
  • Page 5 OPERATING FREQUENCY 2,450M Hz M AGNETRON OM 75SH(31) COOLING M ETHOD COOLING FAN M OTOR OUTSIDE DIM ENSIONS 489(W) x 275(H) x 397(D) OVEN CAVITY AIM ENSIONS 306(W) x 201(H) x 322(D) SHIPPING WEIGHT APPROX 14.0kg CROSS 15.5kg Samsung Electronics...
  • Page 6 DEFROST BUTTON POWER LEVEL SETTING DEODORIZATION INSTANT REHEAT BUTTON BUTTON START DIAL KNOB STOP/CANCEL BUTTON 3-2. Features & External view s DOOR ALTCHES VENTILATION HOLS LIGHT HANDLE ROLLER RING TURNTATBLE SAFETY COUPLER INTERLOCK HOLES DOOR 200mm 357mm 489mm 397mm Samsung Electronics...
  • Page 7 VOLTAGE TRANSFORM ER secondary and filament terminals. It is extremely dangerous to w ork on or near these circuits w ith the oven energized. DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron. Samsung Electronics...
  • Page 8 • Insertion depth of the thin metal plate should be 0.5mm or less. 4-3-3 Removal of Key Door & Spring Door "E" Remove pin hinge from Door "E" Detach spring from Door "E" and key door. Key Door Spring Samsung Electronics...
  • Page 9 Base Plate 8. Connect all the leads to the drive motor. Drive M otor Cover 9. Screw the deive motor cover to the base plate with a screw driver. 10. Remount the coupler in the correct position. Samsung Electronics...
  • Page 10 4. Remove the screw securing the ground tail of the keyboard. CONTROL-BOX 4-6-2 Removal of P.C.B Assembly 1. Remove screws securing the control circuit board. ASSY PCB 2. Lift up the control circuit board from the Ass'y control box. SCREWS Samsung Electronics...
  • Page 11 2. Isolate the magnetron from the circuit by disconnecting its leads. 3. A continuity check across the magnetron filament terminals should indicate one ohm or less. 4. A continuity check between each filament terminal and magnetron case should read open. Cooling Fins Samsung Electronics...
  • Page 12 ∞ Primary sw itch 5. Confirm that the gap between the switch ∞ M onitor sw itch (COM -NC) housing and the switch actuator is no more than ∞ Secondary S/ W 0.5mm when door is closed. Samsung Electronics...
  • Page 13 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Samsung Electronics...
  • Page 14 ; CENTRAL SERVICE CENTER 5-13-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer. Samsung Electronics...
  • Page 15 H.V.Capacitor defective. H.V.Diode, H.V.Fuse M agnetron 4. Open or loose w iring of pow er relay 5. Defective primary latch sw itch 6. Defective pow er relay or Ass'y PCB Replace PCB main. Samsung Electronics...
  • Page 16 Use plastic w rap or cover w ith a lid. Stir once or tw ice w hile cooking foods such as soup, cocoa, or milk. Noise from the turntable motor Noise may result from the motor. Replace turntable motor. w hen it starts to operate. Samsung Electronics...
  • Page 17 If you fail to have more than 16(hexadecimal), replace Ass'y Sensor PCB or M agnetron. Then; -. Leave unit in room temperature about 20 minutes for cooling. -. Calibrate Easy Sensor from the beginning step of calibration method. -. Check Easy Sensor Voltage again. Samsung Electronics...
  • Page 18 3.72 3.72 4.35 4.35 4.35 4.35 4.99 4.99 4.99 4.99 1.86 1.86 1.86 1.86 0.61 0.61 0.61 0.61 1.23 1.23 1.23 1.23 2.49 2.49 2.49 2.49 3.11 3.11 3.11 3.11 3.74 3.74 3.74 3.74 4.37 4.37 4.37 4.37 Samsung Electronics...
  • Page 19 Screwdriver Note : After reolacing M GT,assembly, PCB and sensor PCB, make ues of them after calibrating them all the time by using calibration jig. (For more details, see contents of 7,7-1,7-2, 7-3 and 7-4 of previous page.) Samsung Electronics...
  • Page 20 8. Exploded View s and Parts List 8-1 Exploded View s MM01 MM101 MM171 MM55 MM05 MM07 MM26 MM06 MM03 MM16 MB01 MM17 MM10 MM22 MB03 MM88 MB05 MB02 MB04 MM29 MM09 MM08 MB03 MM14 MM30 MM32 MM18 MM27 MM19 MM31 MM28 MM20 Samsung Electronics...
  • Page 21 Exploded View s and Parts List 8-2 M ain Parts List M1777/XEF Part Code Description Specification Q'ty Remark MB01 DE93-20020E ASSY BODY LATCH -,HANDLE,PP,FB44N,-,- MB02 3405-000175 SWITCH-MICRO 250V,15A,200gf,SPST-NO MB03 3405-000178 SWITCH-MICRO 250V,15A,200gf,SPST-NO MB04 DE66-90054C LEVER-SWITCH PP,-,-,-,-,-,-,HANDLE,FB44N MB05 DE66-40021D LATCH-BODY PP,HANDLE,FB44N...
  • Page 22 Description Specification Q'ty Remark MC01 DE94-00310D ASSY CONTROL-BOX -,M1777/XEF,ABS,P/WHT MC03 DE72-00082A CONTROL-PANEL ABS,M1777/XEF,-,-,-,-,PURE-WHT,- MC06 DE64-00095A WINDOW-DISPLAY SAN,-,M1727/M1927,- MC07 RC-CE2977-03 ASSY PCB PARTS:M1777 MC10 DE64-00107A KNOB-COVER ABS,C-BLUE,-,M1777/M1977,-,-,-,-,- MC13 DE94-00309D ASSY CONTROL-PANEL -,M1777,ABS,P/WHT MC14 DE64-00101B BUTTON-SELECT(A) M1777,ABS,-,P-WHT,- MC141 DE64-00102B BUTTON-SELECT(B) M1777,ABS,-,P-WHT,- MC142 DE64-00103B...
  • Page 23 Exploded View s and Parts List 8-4 Standard Parts List M1777/ XEF Part Code Description Specification Q'ty Remark DE60- 10012A SCREW- TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH N/ P EARTH DE60- 10012A SCREW- TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH P/ C EARTH DE60- 10012A SCREW- TAP TITE...
  • Page 24 9. P.C.B Diagrams 9-1 P.C.B Diagrams Samsung Electronics...
  • Page 25 P.C.B Diagrams 8-2 P.C.B Parts List M1777/XEF Part Code Description Specification Q'ty Remark 3501-001062 RELAY-POWER 24VDC,523.2mW,16A,1FormA,15mS, RY03 3501-001155 RELAY-MINIATURE 24VDC,200MW,3000MA,1FORMA,10MS,10MS RY01,02,05 3501-001186 RELAY-MINIATURE 24Vdc,175mW,1000mA,1FormC,5mS,2mS RY06 3601-001126 FUSE-CARTRIDGE 250V,1.6A,FAST-ACTING,CERAMIC,5x20mm FUSE1 DE07-00009E LED DISPLAY ELF-316GWB-05,45.2*22.38*22.0,YEL/GRN,-,-,-,- 1 DSP1 DE09-00054A IC-MCU TMP87PH47LU,OTP-16K,SDIP,8BIT-42PIN,-,-,-,- 1 IC01 DE26-00034A TRANS-L.V...
  • Page 26 3. LAMP : ON YELLOW/GREEN : ASSY NOISE FILTER PATTERN ORANGE : PCB PATTERN WHITE BLACK GREEN M AGNETRON HIGH VOLTAGE DIODE TO CHASSIS HIGH VOLTAGE CAPACITOR H.V.FUSE SYM BOL COLOR ORANGE BROWN BLUE HIGH VOLTAGE TRANSFORM ER Samsung Electronics 10-1...
  • Page 27 ELECTRONICS © Samsung Electronics Co., Ltd. M ay 2000 Printed in Korea DE68-01203A...

  • Page 28: Table Of Contents

    M ICROWAVE OVEN M 1777(W HITE) SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 6. Troubleshooting 7. Easy Sensor Calibration M ethods and Action Points 8. Exploded View s and Parts List 9.
  • Page 29 (e) A Microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner. Samsung Electronics...

  • Page 30: Precaution

    10. Service technicians should remove their watches while repairing an MWO. 16. Always connect a test instrument's ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics...
  • Page 31 Samsung Electronics...

  • Page 32: Specifications

    OPERATING FREQUENCY 2,450M Hz M AGNETRON OM 75SH(31) COOLING M ETHOD COOLING FAN M OTOR OUTSIDE DIM ENSIONS 489(W) x 275(H) x 397(D) OVEN CAVITY AIM ENSIONS 306(W) x 201(H) x 322(D) SHIPPING WEIGHT APPROX 14.0kg CROSS 15.5kg Samsung Electronics...

  • Page 33: Operating Instructions

    DEFROST BUTTON POWER LEVEL SETTING DEODORIZATION INSTANT REHEAT BUTTON BUTTON START DIAL KNOB STOP/CANCEL BUTTON 3-2. Features & External view s DOOR ALTCHES VENTILATION HOLS LIGHT HANDLE ROLLER RING TURNTATBLE SAFETY COUPLER INTERLOCK HOLES DOOR 200mm 357mm 489mm 397mm Samsung Electronics...

  • Page 34: Disassembly And Reassembly

    VOLTAGE TRANSFORM ER secondary and filament terminals. It is extremely dangerous to w ork on or near these circuits w ith the oven energized. DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron. Samsung Electronics...
  • Page 35 • Insertion depth of the thin metal plate should be 0.5mm or less. 4-3-3 Removal of Key Door & Spring Door "E" Remove pin hinge from Door "E" Detach spring from Door "E" and key door. Key Door Spring Samsung Electronics...
  • Page 36 Base Plate 8. Connect all the leads to the drive motor. Drive M otor Cover 9. Screw the deive motor cover to the base plate with a screw driver. 10. Remount the coupler in the correct position. Samsung Electronics...
  • Page 37 4. Remove the screw securing the ground tail of the keyboard. CONTROL-BOX 4-6-2 Removal of P.C.B Assembly 1. Remove screws securing the control circuit board. ASSY PCB 2. Lift up the control circuit board from the Ass'y control box. SCREWS Samsung Electronics...

  • Page 38: Alignment And Adjustments

    2. Isolate the magnetron from the circuit by disconnecting its leads. 3. A continuity check across the magnetron filament terminals should indicate one ohm or less. 4. A continuity check between each filament terminal and magnetron case should read open. Cooling Fins Samsung Electronics...
  • Page 39 ∞ Primary sw itch 5. Confirm that the gap between the switch ∞ M onitor sw itch (COM -NC) housing and the switch actuator is no more than ∞ Secondary S/ W 0.5mm when door is closed. Samsung Electronics...
  • Page 40 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 D/ 4 Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Cooking Tray Samsung Electronics...
  • Page 41 ; CENTRAL SERVICE CENTER 5-13-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer. Samsung Electronics...

  • Page 42: Troubleshooting

    H.V.Capacitor defective. H.V.Diode, H.V.Fuse M agnetron 4. Open or loose w iring of pow er relay 5. Defective primary latch sw itch 6. Defective pow er relay or Ass'y PCB Replace PCB main. Samsung Electronics...
  • Page 43 Use plastic w rap or cover w ith a lid. Stir once or tw ice w hile cooking foods such as soup, cocoa, or milk. Noise from the turntable motor Noise may result from the motor. Replace turntable motor. w hen it starts to operate. Samsung Electronics...

  • Page 44: Easy Sensor Calibration M Ethods And Action Points

    If you fail to have more than 16(hexadecimal), replace Ass'y Sensor PCB or M agnetron. Then; -. Leave unit in room temperature about 20 minutes for cooling. -. Calibrate Easy Sensor from the beginning step of calibration method. -. Check Easy Sensor Voltage again. Samsung Electronics...
  • Page 45 3.72 3.72 4.35 4.35 4.35 4.35 4.99 4.99 4.99 4.99 1.86 1.86 1.86 1.86 0.61 0.61 0.61 0.61 1.23 1.23 1.23 1.23 2.49 2.49 2.49 2.49 3.11 3.11 3.11 3.11 3.74 3.74 3.74 3.74 4.37 4.37 4.37 4.37 Samsung Electronics...
  • Page 46 Screwdriver Note : After reolacing M GT,assembly, PCB and sensor PCB, make ues of them after calibrating them all the time by using calibration jig. (For more details, see contents of 7,7-1,7-2, 7-3 and 7-4 of previous page.) Samsung Electronics...

  • Page 47: Exploded View S And Parts List

    8. Exploded View s and Parts List 8-1 Exploded View s MM01 MM101 MM171 MM55 MM05 MM07 MM26 MM06 MM03 MM16 MB01 MM17 MM10 MM22 MB03 MM88 MB05 MB02 MB04 MM29 MM09 MM08 MB03 MM14 MM30 MM32 MM18 MM27 MM19 MM31 MM28 MM20 Samsung Electronics...
  • Page 48 Exploded View s and Parts List 8-2 M ain Parts List M1777/XEF Part Code Description Specification Q'ty Remark MB01 DE93-20020E ASSY BODY LATCH -,HANDLE,PP,FB44N,-,- MB02 3405-000175 SWITCH-MICRO 250V,15A,200gf,SPST-NO MB03 3405-000178 SWITCH-MICRO 250V,15A,200gf,SPST-NO MB04 DE66-90054C LEVER-SWITCH PP,-,-,-,-,-,-,HANDLE,FB44N MB05 DE66-40021D LATCH-BODY PP,HANDLE,FB44N...
  • Page 49 Description Specification Q'ty Remark MC01 DE94-00310D ASSY CONTROL-BOX -,M1777/XEF,ABS,P/WHT MC03 DE72-00082A CONTROL-PANEL ABS,M1777/XEF,-,-,-,-,PURE-WHT,- MC06 DE64-00095A WINDOW-DISPLAY SAN,-,M1727/M1927,- MC07 RC-CE2977-03 ASSY PCB PARTS:M1777 MC10 DE64-00107A KNOB-COVER ABS,C-BLUE,-,M1777/M1977,-,-,-,-,- MC13 DE94-00309D ASSY CONTROL-PANEL -,M1777,ABS,P/WHT MC14 DE64-00101B BUTTON-SELECT(A) M1777,ABS,-,P-WHT,- MC141 DE64-00102B BUTTON-SELECT(B) M1777,ABS,-,P-WHT,- MC142 DE64-00103B...
  • Page 50 Exploded View s and Parts List 8-4 Standard Parts List M1777/ XEF Part Code Description Specification Q'ty Remark DE60- 10012A SCREW- TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH N/ P EARTH DE60- 10012A SCREW- TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH P/ C EARTH DE60- 10012A SCREW- TAP TITE...
  • Page 51 9. P.C.B Diagrams 9-1 P.C.B Diagrams Samsung Electronics...
  • Page 52 P.C.B Diagrams 8-2 P.C.B Parts List M1777/XEF Part Code Description Specification Q'ty Remark 3501-001062 RELAY-POWER 24VDC,523.2mW,16A,1FormA,15mS, RY03 3501-001155 RELAY-MINIATURE 24VDC,200MW,3000MA,1FORMA,10MS,10MS RY01,02,05 3501-001186 RELAY-MINIATURE 24Vdc,175mW,1000mA,1FormC,5mS,2mS RY06 3601-001126 FUSE-CARTRIDGE 250V,1.6A,FAST-ACTING,CERAMIC,5x20mm FUSE1 DE07-00009E LED DISPLAY ELF-316GWB-05,45.2*22.38*22.0,YEL/GRN,-,-,-,- 1 DSP1 DE09-00054A IC-MCU TMP87PH47LU,OTP-16K,SDIP,8BIT-42PIN,-,-,-,- 1 IC01 DE26-00034A TRANS-L.V...

  • Page 53: Schematic Diagrams

    3. LAMP : ON YELLOW/GREEN : ASSY NOISE FILTER PATTERN ORANGE : PCB PATTERN WHITE BLACK GREEN M AGNETRON HIGH VOLTAGE DIODE TO CHASSIS HIGH VOLTAGE CAPACITOR H.V.FUSE SYM BOL COLOR ORANGE BROWN BLUE HIGH VOLTAGE TRANSFORM ER Samsung Electronics 10-1...
  • Page 54 ELECTRONICS © Samsung Electronics Co., Ltd. M ay 2000 Printed in Korea DE68-01203A...

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