Samsung BF641FST Service Manual
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Samsung BF641FST Service Manual

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SERVICE
BF641FST_XFA_05291A.indb 1
OVEN
OVEN
BASIC:
BF641FST
MODEL:
BF641FST
MODEL CODE:
BF641FST/XEH
VERSION :
00,01,02
Manual
CONTENTS
1. Precaution
2. Product Specification
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagrams
6. Wiring Diagrams
7. Schematic Diagrams
2011-10-31
1:33:19

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Summary of Contents for Samsung BF641FST

  • Page 1 OVEN BASIC: BF641FST MODEL: BF641FST MODEL CODE: BF641FST/XEH VERSION : 00,01,02 SERVICE Manual OVEN CONTENTS 1. Precaution 2. Product Specification 3. Disassembly and Reassembly 4. Troubleshooting 5. PCB Diagrams 6. Wiring Diagrams 7. Schematic Diagrams BF641FST_XFA_05291A.indb 1 2011-10-31 1:33:19...

  • Page 2: Table Of Contents

    Contents 1. Precaution ................1 1-1 Safety precautions .

  • Page 3: Precaution

    1. Precaution Follow these special safety precautions. 1-1 Safety precautions ( 1. All repairs should be done in accordance with the 10. Always connect a test instrument’s ground lead to procedures described in this manual. This product the instrument chassis ground before connecting complies with Federal Performance Standard 21 the positive lead;...

  • Page 4: Specifications

    2. Specifications 2-1 Features BASIC NEW MODEL Model Name BF641FST/XEU BF641FST/XEH Model Type Install Single Built-in Single Built-in Design Classic Classic Main sales point Even cook Even cook Oven Features Cavity Interior C.Enamel C.Enamel Oven Colors STSS STSS Oven Doors (D: double, T: triple, Q: quadruple)

  • Page 5: Specification

    2-1 Features BASIC NEW MODEL Cook Time End Time Oven Temp Equipment Supplied Multi spit Barbecue spit Square Baking Tray Square Wire Rack 2-2 Specification Specifications BASIC NEWMODEL Power source 230V 50Hz, AC 230V 50Hz, AC Volume (usable capacity) Output Power MAX 3,400W MAX 3,400W 33kg approx...

  • Page 6: Accessory

    2-3 Accessory Description Code No. Q’ty Back RACK-WIRE DG59-00001A TRAY-BAKING A DG63-00012A - 4 - BF641FST_XFA_05291A.indb 4 2011-10-31 1:33:20...

  • Page 7: Disassembly And Reassembly

    3. Disassembly and Reassembly 3-1 Replacement of Door Assembly Parts Explaination Photo Explaination Turn over the clips of both hinges. Door Assembly With both hands, grasp the middle sides of the oven door. Rotate the door by approx. 70degree until the hinges can be taken out completely from the hinges holes.

  • Page 8: Replacement Of Door Glass

    3-2 Replacement of Door Glass (00, 01 version) WARNING Whenever the door is separated from the oven, the clips should always be turned over. When the door is mounted, if some of the parts (Door glass or other parts) are removed from the door, it can cause injury due to sheet.
  • Page 9 3-2 Replacement of Door Glass (Continued) (00, 01 version) Parts Explaination Photo Explaination Door Bracket Holder Glass Rubber Door Glass Glass #1 Glass #2 Glass #3 - 7 - BF641FST_XFA_05291A.indb 7 2011-10-31 1:33:22...
  • Page 10 3-2 Replacement of Door Glass (02 version) WARNING Whenever the door is separated from the oven, the clips should always be turned over. When the door is mounted, if some of the parts (Door glass or other parts) are removed from the door, it can cause injury due to sheet.

  • Page 11: Replacement Of The Rear Oven Lamp Bulb

    3-2 Replacement of Door Glass (Continued) (02 version) The Assembly is reverse order of disjointing. Parts Explaination Photo Explaination Door Glass 3-3 Replacement of the rear oven Lamp Bulb Parts Explaination Photo Explaination Take off the cap by turning counterclockwise. Remove the metal ring and the sheet ring and clean the glass cap.

  • Page 12: Replacement Of Assy Control Box

    3-4 Replacement of Assy Control Box (00, 01 version) Parts Explaination Photo Assy Select S/W Parts Assy PCB Parts (Main PCB) Assy Display Motor Fan Cooling Explaination Photo Explaination 1. Remove Three connectors from the main pcb. 2. Remove the connector from Main TCO. 3.
  • Page 13 3-4 Replacement of Assy Control Box (02 version) Parts Explaination Photo Assy Select S/W Parts Assy PCB Parts (Main PCB) Assy Display Motor Fan Cooling Explaination Photo Explaination 1. Remove Three connectors from the main pcb. 2. Remove the connector A and B. Assy Control Box 3.
  • Page 14 3-4 Replacement of Assy Control Box (Continued) Remove 4 screws. Remove 2 screws. - 12 - BF641FST_XFA_05291A.indb 12 2011-10-31 1:33:27...

  • Page 15: Replacement Of Motor Fan Cooling

    3-5 Replacement of Motor Fan Cooling Parts Explaination Photo Explaination Fan Cooling Remove four screws. 3-6 Replacement of Thermostat Parts Explaination Photo Explaination Remove two screws. Thermostat Unfold two points. - 13 - BF641FST_XFA_05291A.indb 13 2011-10-31 1:33:28...

  • Page 16: Replacement Of Motor Convection

    3-7 Replacement of Motor Convection (00, 01 version) Parts Explaination Photo Explaination Remove four screws at the back inside cavity to separate the cover casing. Turn Nut-Hexagon cap to the left to release and separate spacer fan convection and fan convection. Motor Upper : Counterclockwise Convection...
  • Page 17 3-7 Replacement of Motor Convection (02 version) Parts Explaination Photo Explaination Remove four screws at the back inside cavity to separate the cover casing. Turn Nut-Hexagon cap to the left to release and separate spacer fan Motor convection and fan convection. Convection Upper : Counterclockwise Lower : Clockwise...

  • Page 18: Replacement Of Heater Convection Single

    3-8 Replacement of Heater Convection Single Parts Explaination Photo Explaination Remove two screws securing heater convection at the rear. Heater Convection Single Pull the securing bracket at the left forward, and pull it toward the left to separate heater convection. - 16 - BF641FST_XFA_05291A.indb 16 2011-10-31...

  • Page 19: Replacement Of Terminal Block

    3-9 Replacement of Terminal Block Parts Explaination Photo Explaination Terminal Remove two screws. Block 3-10 Replacement of Sensor Thermistor Parts Explaination Photo Explaination Sensor Remove a screw. Thermistor - 17 - BF641FST_XFA_05291A.indb 17 2011-10-31 1:33:32...

  • Page 20: Replacement Of Heater Grill

    3-11 Replacement of Heater Grill Parts Explaination Photo Explaination Remove each nut frange at right and left sides. Heater Grill Remove the two screws of inside cavity. 3-12 Replacement of Heater Bottom Parts Explaination Photo Explaination Heater Remove a screw and pull forward to Bottom separate it.

  • Page 21: Troubleshooting

    4. Troubleshooting 4-1 Part Checking method Parts Photo Good No Good 0.1 ~ 1 Ω 100 MΩ exceed T.C.O (Cooling TCO : 100 MΩ exceed) (Cooling TCO :0.1 ~ 1 Ω ) “00Version" “00Version" Convection 100 ~ 350 Ω 100 MΩ exceed Motor Bottom 10 ~ 150 Ω...

  • Page 22: Failure Codes

    4-2 Failure Codes 4-2-1 Temp Sensor Error Error Code Solution Page Sensor Open Error 21 Page It occurs due to a defective sensor, misplaced wires, a defective PCB and when A/D value that MICOM senses rises over 252. Sensor Short Error It occurs due to a defective sensor, misplaced wires, a defective PCB and when 22 Page A/D value that MICOM senses falls under 10.
  • Page 23 4-2-3 E-21 Sensor Open Error (E-21) : Check if the sensor housing is inserted into the connector of the main PCB. Connect the sensor. Is the sensor disconnected? connector Is the sensor wire Connect the : Check if the sensor wire is damaged, if the connected properly? wire properly.
  • Page 24 4-2-4 E-22 Sensor Short Error (E-22) Remove the shorted part : Check if both terminals of the Is the sensor shorted? of the temperature sensor. sensor are slightly shorted. : Check if the sensor and related parts such as the connector or soldering parts are slightly shorted.
  • Page 25 4-2-5 S-01 Over Time Error (S-01) Is it temperature 100°C in oven? Has it worked for 6 hours continuously? Is it temperature 105°C~240°C in oven? Re-check the Cut-Off-Time Has it worked for for the corresponding 8 hours continuously? internal temperature. Is it temperature 245°C in oven? Re-check the Cut-Off-Time...
  • Page 26 4-2-6 -SE- Key Short Error (- SE -) Is the key not recognized at all? Is the key recognized intermittently? Is a specific key not recognized? The Button is defective. S/W Error Replace the Control Panel. After Power > On, does the symptom continue? Replace the PCB.
  • Page 27 4-2-7 E-08 Preheating Error (E-08) Check the heater Does the heater work? : Check the voltages of related drive part. both heater terminals. Replace the Is the heater temperature : After operating the heater for more then heater. very low? 10 minutes check if the heater temperature remains low.
  • Page 28 4-2-8 E-0A Internal Oven Temperature Abnormal Error (E-0A) “E-09, E-24, E-0A” 가 표시된다 Is the oven internal temperature An “E-0A” error maintained over 320 degrees? occurred. Reconnect the Is the temperature sensor temperature connectivity normal? sensor properly. Check and repair 히터...

  • Page 29: Power Failure

    4-2-9 Power Failure No Power Reset The circuit braker or - Check terminal block voltage, 230V. Check main power - TCO open Check Replace TCO (main TCO, Grill TCO) - Check the input voltage of PCB Repair Faulty wiring SMPS (input checkpoint : 230V ) Replace PCB or display PCB check - 27 - BF641FST_XFA_05291A.indb 27...
  • Page 30 4-2-10 TCO Open Note : When oven is operating , if main power off, power oven off, in temporary temperature rise, TCO is possible will can open. TCO Open Replace TCO Replace Motor - Motor Terminal Voltage check • Motor Connect wire Remove - Colling motor, Conveclion Motor - Motor Resistor check check...
  • Page 31 4-2-11 PCB Failure PCB Failure Replace TCO - TCO Open? - Check the input voltage of PCB SMPS (input check- point : 230V ) Repair Faulty wiring - Check Terminal block or PCB check voltage(230V). Reset the circuit braker or check main power.
  • Page 32 4-2-12 Failure of heating elements Failure of heating elements • After removing Heater Wire - Check heater’s terminal volt- - Check Heater resistance (Large G :32.8Ω, Replace heater age (230V) Small G:48.6Ω, Bottom : 48.1Ω, Conv:44Ω) - Repair Faulty wiring (Possible termial contact failure) - TCO Open? Perform “TCO Open Check Process”...

  • Page 33: Pcb Diagram

    5. PCB Diagram 5-1 PCB Diagram (00Version) ① ② ③ Parts Number Part Name Function and Rule CN301 Oven thermistor connector Connected to oven thermistor CN101 Grill, Power sense & AC power connector Connected to mode switch & AC power(Neutral) RY201 Heater &...

  • Page 34: Pcb Diagram

    5-2 PCB Diagram (00Version) CN301 1) NO CONNECTION 2) NO CONNECTION 3) THERMISTOR 4) THERMISTOR CN01 RY201 1) GRILL SENSE HEATER CONTROL 2) NO PIN 3) POWER SENSE 4) NO PIN 5) NEAUTRAL INPUT - 32 - BF641FST_XFA_05291A.indb 32 2011-10-31 1:33:40...
  • Page 35 5. PCB Diagram 5-1 PCB Diagram (01Version) ② ③ ④ ① ⑤ Parts Number Part Name Function and Rule Connected to mode switch & AC CN101 Power,Grill,Convection sense & power connector. power.(Neutral) CN301 Oven thermistor connector. Connected to oven thermistor. Connected to Heater &...
  • Page 36 5-2 PCB Diagram (01Version) CN301 1) NO CONNECTION 2) NO CONNECTION 3) THERMISTOR 4) THERMISTOR RY202 RY201 Cooling Motor Control HEATER CONTROL RY203 CN01 Convection Motor Control 1) +5V 2) Grill Sensing 3) Convection Motor Sensing 4) Operating Sensing 5) NEAUTRAL INPUT 6) No Pin 7) Cooling Motor 8) No Pin...

  • Page 37: Wiring Diagram

    6. Wiring Diagram ( This Document can not be used without Samsung’s authorization. ) 6-1 Wiring Diagram (00Version) - 35 - BF641FST_XFA_05291A.indb 35 2011-10-31 1:33:45...
  • Page 38 6. Wiring Diagram ( This Document can not be used without Samsung’s authorization. ) 6-1 Wiring Diagram (01Version) - 36 - BF641FST_XFA_05291A.indb 36 2011-10-31 1:33:45...

  • Page 39: Schematic Diagram

    7. Schematic Diagram 7-1 Schematic Diagram (00Version) t i r - 37 - BF641FST_XFA_05291A.indb 37 2011-10-31 1:33:45...
  • Page 40 7. Schematic Diagram 7-1 Schematic Diagram (01Version) +12V PC101 TR106 PC817 KRA226 POWER SUPPLY MICOM DISPLAY ZD102 R101 MTZJ4.7B C103 100nF PTC101 D101 L101 33ohm 1N4007 78L05 LIVE IC101 IC102 LNK304P L102 IC103 TMP89FH42UG CN101 D103 ZD101 C105 C106 ZNR101 SMW250-09V_RED UF4007 MTZJ12B...
  • Page 41 Asia asia.samsungportal.com Mideast & Africa mea.samsungportal.com This Service Manual is a property of Samsung Electronics Co.,Ltd. © Samsung Electronics Co., Ltd. October. Any unauthorized use of Manual can be punished under applicable 2011 Printed in Korea International and/or domestic law.

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