Samsung SR-40RMB Service Manual
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Samsung SR-40RMB Service Manual

Samsung SR-40RMB Service Manual

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Model :SR-40RMB
SR-44RMB
FEB, 2000
For request : Refcs@Samsung.co.kr

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Summary of Contents for Samsung SR-40RMB

  • Page 1 Model :SR-40RMB SR-44RMB FEB, 2000 For request : Refcs@Samsung.co.kr...

  • Page 2: Product Specifications

    670x640x1660 670x640x1730 Net Dimension (670) (670) (WidthxDepthxHeight) 110~115V/60Hz, 127V/60Hz, 220V/5~60Hz, 230~240V/50 Rated Voltage & frequency 290W Rated Power Defrost, Heater forced convection Type of Refrigerator Refrigerant HFC-134a 160g Refrigerant Mass 4 STAR Freezing Capicity Weight (Net/Gross) 59/69(kg) 63/73(kg) Samsung Electronics...

  • Page 3: Safety Warnings

    • Do not install the refrigerator in a • If earthing is not done, it will exchanging electrical equipment. humid (with condensation) location cause breakdown & electric • It may cause electric shock. or on an unstable surface. shock. Earth Unplug Samsung Electronics...
  • Page 4 • Cleaning may prevent the possible state before disassembly. necessary treatment such as taping fire by tracking or short using the insulating tape. Samsung Electronics...
  • Page 5 1 Case Tray Ice 1Shelf Freezer Accessory Inside 1 Case Chilled Room 2 Shelf Refrigerator Parts Storage 1 Cover Vegetable 1 Case Vegetable 1 Vegetable Partition Interior Lamp Refrigerator (Freezer) Movable Caster 2 (Rear) Angle Adjustment 2 Legs (front) Samsung Electronics...
  • Page 6 Open temp. 125¡ 5˚C 130¡ 5˚C 120¡ 5˚C 125¡ 5˚C 250VAC/12µF 250VAC/12µF 350VAC/5.0µF 350VAC/5.0µF Capacitor Running Resistor Heater MORS 3W 290W/ 45Ω 290W/ 55Ω 290W/ 167Ω 290W/ 198Ω Heater-defrost 110V~130V/15w Lamp 220V~240V/15W 250V/0.5A, 125V/1.5A Door-Switch BSBN(Brass screw) Earth screw Samsung Electronics...

  • Page 7: Electric Circuit Diagram

    ORG – ORANGE PRP – PURPLE GRY – GRAY RED – RED BRN – BROWN YEL – YELLOW S/BLU – SKY BLUE PNK – PINK BLK – BLACK WHT – WHITE W/BLK – WHITE/BLACK ORG – ORANGE PRP – PURPLE Samsung Electronics...
  • Page 8 5. Extemal size and Designations 5-1) Product Dimension 454.1 80.5 MODEL Remark 1660 1103.5 549.5 640(670) SR40NMA/NMB/RMB SR-34 1730 1173.5 549.5 640(670) SR44NMA/NMB/RMB SR-30 Samsung Electronics...
  • Page 9 Pull the drawer helf way out, then lifting it up, pull it out back. completely. • To repace the cover, first engage the mounting hook covers (¤ ) as shown, then engage the other hook (¤Ł ) and push Samsung Electronics...

  • Page 10: Schematic Diagram Of Coolant Gas Circulation

    6. Schematic diagram of coolant gas circulation 6-1) Refrigeration Cycle COMPRESSOR ¡ PIPE IMMERGE ¡ PIPE SUB CONDENSER ¡ PIPE CLUSTER ¡ PIPE HOT ¡ DRYER¡ CAPILLARY TUBE ¡ EVAPORATOR ¡ ACCUMULATOR ¡ PIPE SUCTION ¡ COMPRESSOR Samsung Electronics...
  • Page 11 Cold air supplied to the duct cover passes through the refrigerating compartment. • After cooling the refrigerating compartment, cold air is absorbed to the lower part of the cooling system through the suction port on the median divider. Samsung Electronics...

  • Page 12: Circuit Operation Theory

    5)In the process, comp and fan maintain ON condition, after defrosting heating it operates with 10 min. recess time. 6)defrosting heating point ON and OFF operates by EVA-SENSOR and each temperature is as follows: Heater On Point Heater Off Point Remark below -5¡ 15¡ Samsung Electronics...
  • Page 13 ON and returns to normal operation. 3)Test Function Release Mode If TEST S/W is pressed once more when forced defrosting function is carried out, forced defrosting is released and stops for 10 mints. and after that it returns to normal operation. Samsung Electronics...
  • Page 14 When R-Room Sensor is defected, LAMP repeats one time of 0.3 second on, and then 2 seconds off. When R-Room Sensor and EXT Sensor are defected at the same time, LAMP repeats one time of 0.3 second on, 2 seconds off, and then 3 times of 0.3 second on, 2 seconds off. Samsung Electronics...
  • Page 15 It oscillates generate clock for synchronizing the information transmission and reception of the internal elements of MICOM and to calculate the time. If the specification of resonator is changed, it is not able to operate normally because the trimming system of MICOM is altered. Samsung Electronics...
  • Page 16 50 or 60HZ globe-shaped wave. MICOM recognizes this waveform and detects that door is open. If door is closed, R-DOOR S/W contact is open and power is not supplied to PC817, MICOM recognizes that door is closed as DC5V is maintained continuously. Samsung Electronics...
  • Page 17 2) The voltage which is input to MICOM by a sensor is calculated with Vf=(Rth¡¿ Vcc)/(R303+Rth). (Vcc=DV5V,Rth:Sensor resistance) 3) Refer to the attached conversion table of resistance and input voltage of sensor for temperature. Samsung Electronics...
  • Page 18 0.99§¡ 1 % 1.96§¡ 1 % 2.91§¡ 1 % 3.84§¡ 1 % 4.76§¡ 1 % 5.66§¡ 1 % 6.54§¡ 1 % 100§¡ 1 % (CN01 7-8 each end) On the above Table, resistance value is not calculated when SUB PCB ASS'Y connecting line is disconnected or there are any cracks on PCB board. Samsung Electronics...
  • Page 19 When the defrosting heater is turned off, the micom (pin 23) outputs low (0V). c) Indicating Lamp is turned ON when MICOM(PIN 22) input voltage is high and DC12V is passed to LED through resistance R703. When MICOM(PIN 22) output is low, LED is turned OFF. Samsung Electronics...
  • Page 20 +7.5 ¡ ¡ ¡ ¡ ¡ ¡ ¡ -7.5 +8.0 ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ Warning) As DIODE OPTION except D601-D605 has important effects on the reliability of refrigerator, do not change it voluntarily!!! Samsung Electronics...

  • Page 21: Troubleshooting

    CN01 of MAIN PCB OK? Repair connector part and wires. (see temperature controller circuit) Is the resistance value of refrigerator sensor OK? (see separate temperature Table) Replace refrigerator sensor Repair MAIN PCB ASS'Y and other COMP connection unit. Samsung Electronics...
  • Page 22 Replace Fuse. Is soldering and SHORT on the soldered area of MAIN PCB OK? Check soldering. Is COMP RELAY and defrosting RELAY OK when the TEST S/W of MAIN PCB is operated? Check PCB. MAIN PCB ASS'Y is OK Samsung Electronics...
  • Page 23 4. Circuit Samsung Electronics...
  • Page 24 0.53 0.53 VSB - 36 ( 0.53 0.53 VSB - 48 ( 12.6 0.53 1,100 16.8 0.53 25.2 0.53 VSB - 60 ( 2,450 4,400 33.6 0.53 VSB - 100 ( 6,800 42.0 0.53 18,860 70.0 10.0 0.53 Samsung Electronics...

  • Page 25: Specifications

    (ƒR 1) Min. Switching Load mentioned above are reference values. Please perform the confimation ƒU Max. Contious Voltage Please see Characteristic Data test with the actual load before production since reference values may vary according to switching frequencies, environmental conditions and expected reliability levels. Samsung Electronics...
  • Page 26 ¡ L¡– Transmission Delay Time = 1.0§ , C =100pF §` ¡ H¡– Transmission Delay Time -0.05V,T =25¡ Output Current (at on time ¥ ) DET(MIN) OL ¥ -0.05V, Output Current (at on time ¥– ) DET(MIN) OL ¥– =-30 ~ +75¡ Samsung Electronics...

  • Page 27: Ordering Information

    ƒU Detecting against error operations at the power ON/OFF ƒU Resetting function for the low voltage 1:Input 2:GND 3:Output microprocessor. ƒU Checking low battery. ORDERING INFORMATION Device Package Operating Temperature KA7533Z TO-92 -30 ~ +75¡ BLOCK DIAGRAM INPUT Samsung Electronics...
  • Page 28 KA78XX, T = 0¡ , T = 125¡ ƒR Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately. Pulse testing with low duty is used. Samsung Electronics...

  • Page 29: Absolute Maximum Ratings

    KA78XX, T = 0¡ , T = 125¡ ƒR Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately. Pulse testing with low duty is used. Samsung Electronics...
  • Page 30 ƒU <None>Thermal Overload Protection 0 ~ +125¡ ƒU Short Circuit Protection KA78XXA TO-220 ƒU Output Transistor SOA Protection -40 ~ +125¡ KA78XXI TO-220 BLOCK DIAGRAM INPUT OUTPUT SERIES PASS ELEMENT CURRENT GENERATOR PROTECTION STARTING REFERENCE ERROR CIRCUIT VOLTAGE AMPLIFIER THERMAL PROTECTION Samsung Electronics...
  • Page 31 8.673 2.322 38.640 3.972 8.345 2.274 36.765 3.93 8.032 2.227 34.995 3.888 7.732 2.180 33.323 3.845 7.446 2.134 31.743 3.802 7.172 2.088 30.250 3.757 6.910 2.043 28.838 3.712 6.659 1.998 27.502 3.666 6.420 1.954 26.237 3.62 6.190 1.911 Samsung Electronics...
  • Page 32 19.932 3.329 5.000 1.666 19.062 3.279 4.829 1.628 18.237 3.229 4.665 1.590 17.453 3.178 4.508 1.553 16.709 3.127 4.357 1.517 16.001 3.076 4.212 1.481 15.328 3.025 4.072 1.446 14.688 2.974 3.938 1.412 14.080 2.923 3.810 1.379 14.501 2.872 Samsung Electronics...

  • Page 33: Pin Configuration

    = GND, V = 50V, Ta = 25¡ §¸ Clamp Diode Leakage Current = open, V = GND, V = 50V, Ta = 25¡ §¸ Clamp Diode Forward Voltage = 350mA PIN CONFIGURATION SCHEMATIC DIAGRAMS KA2655(each driver) 7.2K Samsung Electronics...
  • Page 34 DA32-10109J R-SENSOR ASS’Y 502AT DA41-00010A MAIN PCB ASS’Y AC220V/50, 60HZ DA41-00010B MAIN PCB ASS’Y AC127V/50, 60HZ DA41-00010C MAIN PCB ASS’Y AC240V/50, 60HZ DA41-00010D MAIN PCB ASS’Y AC115V/50, 60HZ DA41-00012A SUB PCB ASS’Y T3-P/J DA32-10109M EXT SENSOR ASS’Y 502AT Samsung Electronics...
  • Page 35 8. Troubleshooting 8-1 Trouble check for the cooling cycle Samsung Electronics...
  • Page 36 When the switch is and∞Ω on by the contact ( Seperating measure) • Use the tester to measure Abnormal Normal the resistance. Defrost heater EVAP ∞ MΩ ~ ∞Ω 40Ω ~200Ω – Bring the component to cool down completely before measuring. Samsung Electronics...

  • Page 37: How To Disassemble Of Freezing Compartment

    2. Please pull up the top with a long-nose and insert the hand into the gab, as shown below. Take a part the connected housing. 3. When the COVER-EVAP, ASSY is taken a part, take an action on the problem. Reassemble the cover evap a’ssy. Samsung Electronics...
  • Page 38 Replace the chiller compartment by sliding it back into position. 11-2 Changing the Freezer Light (option) Remove the light cover by using + driver Unscrew and remove the light bulb. Insert new bulb and push the cover back into place. Secure the cover with the two screw. Samsung Electronics...
  • Page 39 Unscrew 3 screws of the hinge and separate it. Separate the door switch. Hold up and remove the refrigerator door. ¢ ¢ ” ” Move the stopper at the bottom of the freezer door and the refrigerator door right to left to fix it. Samsung Electronics...
  • Page 40 Put down the refrigerator door to fit in the proper location. Fix the hinge to the fixing roll. Freezer Door Fix the freezer door downward. Fix the freezer door th the fixing roll and screw it. Assemble the cover hinge. Samsung Electronics...
  • Page 41 ELECTRONICS 272,Oseon-Dong,Kwangsan-Gu, Kwangju-City,Korea,506-253 TEL:(062)950-6811,6812 FAX:(062)950-6829 ¤ˇSamsung Electronics Co,Ltd Refrigerator Division 1999.1 Printed in Korea...

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