manualshive.com logo in svg

LG GR-K16SLQ, Technical Manual, Page: 25 / 58

Share
Download
LG GR-K16SLQ Technical Manual Download Page 25

26

7) Stepping Motor Operation Circuit (3-way Valve)

➲

The rotation of the 3-way valve is controlled by the output of pins 40~43 of IC1. 
Changes in these outputs rotate the valve.

Explanation)

The stepping motor is driven by lC8. Signals are transmitted via lC8 as the motor
driving IC. The motor coil wound on each phase of the stator forms the rotation
magnetic field and causes the stepping rotation. 

MICOM Function and Description of Circuit

GR-K16SLQ, GR-K18SLQ

LED MODULE TYPE

GR-K20SVZ

LCD TYPE

Summary of Contents for GR-K16SLQ

Page 1: ...MODEL GR K16SLQ GR K18SLQ GR K20SVZ CAUTION Before evaluating or servicing this product read the safety and operation rules in this manual KimchiStorage SVC Technical Manual ...

Page 2: ...ts of the storage 6 Remove all foods dishes racks etc from the refrigerator before tilting it during repairs to avoid spills 7 Refer all repairs of the sealed system to an Authorized servicer who has the appropriate refrigerant recovery equipment Escaping refrigerant could cause injury pollute the air or cause other environmental concern Contents 1 Safety Warnings and Cautions 3 2 Product Specific...

Page 3: ...amage or injury if instructions are not followed Warning Caution Warning Use Caution to prevent electric shock The control board Main PCB uses 310 V When replacing PCB parts wait at least 3 minutes after unplugging Always unplug the storage before repairing Make sure that the power plug is not pressed by the back of the storage Power plug may be damaged and cause a fire or electric shock Do not al...

Page 4: ...or its intended purpose This storage is for making and storing kimchi Do not use it as a substitute for a precisely controlled environment as for storing medications documents etc or for any other purpose Use caution when disposing of a storage Remove the door and do not leave it where children may play in or around it There is a risk of child entrapment Do not set items particularly flowers or co...

Page 5: ...s be sure all connectors are tight and wires are properly routed Loose wires could be damaged causing shock or fire hazards Be sure the power cord is undamaged Do not bend twist pull or damage the cord It could result in fire or electrical shock During repairs remove all dust and foreign materials from the work area Keeping these areas clean makes work easier and will prevent problems like overhea...

Page 6: ... Width Depth Height Volume 158 l 5 58 ft3 92 l 3 25 ft3 66 l 2 33 ft3 817 mm 32 2 inches 694 mm 27 3 inches 878 mm 34 6 inches 62 kg 137 lbs 210 W Direct cooling Manual Defrost Polyurethane Foam 1 6 pcs 2 pcs KX56LACH PIPE ON SHEET R134a 135 g FREOL 15 G 280 cc P6R8MB 4TM314TFB Ø110 fan adhesion 115 V 80 W 115 V 60 W 115 V 17 W 250 Vac 10µF 160 Vac 100µF Outside Dimensions Cold Cycle Electrical Pa...

Page 7: ...olume 184 l 6 50 ft3 92 l 3 25 ft3 92 l 3 25 ft3 921 mm 36 3 inches 694 mm 27 3 inches 878 mm 34 6 inches 67 kg 148 lbs 285 W Direct cooling Manual Defrost Polyurethane Foam 1 6 pcs 2 pcs KX56LACH PIPE ON SHEET R134a 140 g FREOL 15 G 280 cc P6R8MB 4TM314TFB Ø110 fan adhesion 115 V 80 W 115 V 80 W 115 V 18 W 250 Vac 10µF 160 Vac 100µF Outside Dimensions Cold Cycle Electrical Part Rating Total weigh...

Page 8: ...ft3 132 l 4 66 ft3 66 l 2 33 ft3 970 mm 36 2 inches 698 mm 27 5 inches 879 mm 34 61 inches 70 kg 154 lbs 285 W Direct cooling Manual Defrost Polyurethane Foam 1 10 pcs 2 pcs KX56LACH PIPE ON SHEET R134a 145 g FREOL 15 G 280 cc P6R8MB 4TM314TFB Ø110 fan adhesion 115 V 100 W 115 V 60 W 115 V 19 W 250 Vac 10µF 160 Vac 100µF Outside Dimensions Cold Cycle Electrical Part Rating Total weight Motor power...

Page 9: ...y to take the weight off the adjusting screws may make this task easier 2 Grounding method Plug the cord into a 115 V grounded outlet If you are unsure of the voltage or grounding integrity consult a qualified electrician Take care not to ground the circuit at one of the following places 1 Water pipe If there is plastic piping within the system the ground may not be valid 2 Gas pipe There is the d...

Page 10: ...10 Circuit Diagram Chapter 4 Chapter 4 Circuit Diagram 1 GR K16 K18SLQ LED MODULE TYPE 3 WAY VALVE MOTOR PTC STARTER Mechanical Area FAN MOTOR LEFT MATURATION HEATER CONDENSATION HEATER ...

Page 11: ...rything is correct all LEDs will turn on If there is a failure all LEDs EXCEPT the Remaining Maturation Time LED will turn on Press TEST SWITCH once Press TEST SWITCH at TEST1 once Press TEST SWITCH at TEST2 once Press TEST SWITCH at TEST3 once Press TEST SWITCH at TEST4 once Circuit Diagram ...

Page 12: ...12 Circuit Diagram 3 WAY VALVE MOTOR PTC STARTER Mechanical Area FAN MOTOR LEFT MATURATION HEATER CONDENSATION HEATER 2 GR K20SVZ LCD TYPE ...

Page 13: ...rything is correct all LEDs will turn on If there is a failure all LEDs EXCEPT the Remaining Maturation Time LED will turn on Press TEST SWITCH once Press TEST SWITCH at TEST1 once Press TEST SWITCH at TEST2 once Press TEST SWITCH at TEST3 once Press TEST SWITCH at TEST4 once Circuit Diagram ...

Page 14: ... Compartment Right Compartment 1 On power up the display lights Cabbage Kimchi for both compartments and the temperature state is Mid 2 Press Lock Unlock before using the other buttons on the control panel If the keypad is locked the buttons will not operate nor will the buzzer sound 3 In the event of a power interruption the displayed settings are maintained However when a power interruption occu...

Page 15: ...temperature and the temperature in the compartments of the storage Additionally the 3 way valve operates and the ripening heater turns on and off 6 As the ripening process completes 45 102 hours the setting defaults to the Kimchi Mid status and the kimchi is kept in cold storage 7 At the end of the ripening process the display shown 0 Day 00 Time Remaining Ripening Time Press the Lock Unlock butto...

Page 16: ...if the Kimchi is at room temperature the cold control operates 3 During the ripening cycle if Kimchi is cold the ripening heater is turned on if Kimchi is warm the ripening heater is turned off 4 If a failure occurs such as a sensor error during ripening the storage will default to Kimchi Mid status 3 Temperature Control Method 1 The compressor runs or stops and the 3 way valve opens or closes dep...

Page 17: ...ensation heater is also turned OFF if you turn either compartment on the condensation heater is turned on 5 Buzzer Sound 1 If you press a button on the control panel the buzzer sounds Ding Dong See Buzzer Operation circuit page 23 section 2 2 If you begin entering a program by pressing buttons but don t complete the program the buzzer sounds Ding 6 Power Failure Compensation Function 1 When the po...

Page 18: ... no use Condensation heater is set for always ON but if the left and right compartment are simultaneously turned off condensation heater is turned off too The 3 way valve is opened to both compartments for 3 minutes then it is opened to either the left or the right compartment depending on the temperature in the compartments POWER ON CONDEN SATION HEATER ON 3WAY VALVE OPEN 3 WAY VALVE OPEN BOTH 3W...

Page 19: ...maximum of 2 hours TEST2 Press the test switch once when Test 1 indicates it is completed 1 Compressor ON 2 3 Way Valve opens to the Right Compartment 3 Left and right ripening heaters OFF 4 Condensation heater OFF 5 LED displays 222 This test checks the refrigeration system for the right compartment only The system reverts to initial status after a maximum of 2 hours TEST3 Press the test switch o...

Page 20: ... to allow the current to dissipate There is a danger of electric shock 2 Oscillation circuit The oscillation circuit provides the clock signal for synchronization and calculation of time in relation to the logic elements of microprocessor IC 1 OSC 1 must always use the original rated parts because if the specification changes the timing generated will not be correct causing erratic functioning of ...

Page 21: ...riving circuit State ON Within 1 V OFF 12V Type of Load Comp Fan Motor Left Ripening Heater Right Ripening Heater Condensation Heater Measuring Point IC7 16 14 13 11 Right Condensation H Left Condensation H Right Ripening Heater Left Ripening Heater GR K16SLQ GR K18SLQ LED MODULE TYPE ...

Page 22: ...12V Type of Load Comp Fan Motor Left Ripening Heater Right Ripening Heater Condensation Heater Measuring Point IC7 10 12 13 15 Right Condensation H Left Condensation H Right Ripening Heater Left Ripening Heater GR K20SVZ LCD TYPE ...

Page 23: ... pressed Ding sounds when an incorrect button is pressed OFF IC1 PIN 50 IC1 PIN 51 5 V 5V 0 05s 0 2s 0 1s 0 5s 0V 5V 0V 5V 0 05s 0 2s 0V 5V 0V Ding Ding Dong 5 Switch input circuit The switch input circuit detects the test switch signal GR K16SLQ GR K18SLQ GR K20SVZ LED MODULE TYPE LCD TYPE ...

Page 24: ...ening kimchi The status of each sensor whether open or shorted is shown below Sensor Checkpoint Normal 50 C 80 C Shorted Open Left sensor POINT Voltage Right sensor POINT Voltage 0 5 Vdc 4 5 Vdc 0 Vdc 5 Vdc Outside sensor POINT Voltage R1 SENSOR LEFT SENSOR R2 SENSOR RIGHT SENSOR RT SENSOR OUTSIDE SENSOR GR K16SLQ GR K18SLQ LED MODULE TYPE R1 SENSOR LEFT SENSOR R2 SENSOR RIGHT SENSOR RT SENSOR OUT...

Page 25: ...ese outputs rotate the valve Explanation The stepping motor is driven by lC8 Signals are transmitted via lC8 as the motor driving IC The motor coil wound on each phase of the stator forms the rotation magnetic field and causes the stepping rotation MICOM Function and Description of Circuit GR K16SLQ GR K18SLQ LED MODULE TYPE GR K20SVZ LCD TYPE ...

Page 26: ...ensation circuit recalls the temperature range of the right and left compartments and maintains these levels if power is interrupted briefly Temperature setting information is delivered to 1C9 via its serial interface with the microprocessor 1C1 If the power failure compensation does not work replace 1C9 ...

Page 27: ... adjustment of resistance value difference value against current temperature Left Compartment Right Compartment Temperature compensation value Remarks RCL RCR 180 KΩ 2 5 C 56 KΩ 2 0 C 33 KΩ 1 5 C 18 KΩ 1 0 C 12 KΩ 0 5 C 10 KΩ 0 C 8 2 KΩ 0 5 C 5 6 KΩ 1 0 C 3 3 KΩ 1 5 C 2 KΩ 2 0 C 470 Ω 2 5 C Warmer Standard temperature Cooler LEFT STORAGE TEMPERATURE COMPENSATION RIGHT STORAGE TEMPERATURE COMPENSAT...

Page 28: ... DOWN 1 5 C DOWN 1 C DOWN 33 KΩ 4 C DOWN 3 5 C DOWN 3 C DOWN 2 5 C DOWN 2 C DOWN 1 5 C DOWN 56 KΩ 4 5 C DOWN 4 C DOWN 3 5 C DOWN 3 C DOWN 2 5 C DOWN 2 C DOWN 180 KΩ 5 C DOWN 4 5 C DOWN 4 C DOWN 3 5 C DOWN 3 C DOWN 2 5 C DOWN Division 470 Ω 2 KΩ 3 3 KΩ 5 6 KΩ 8 2 KΩ 10 KΩ Modification Current Left Compartment RCL Right Compartment RCR 470 Ω 3 C UP 3 5 C UP 4 C UP 4 5 C UP 5 C UP 2 KΩ 2 5 C UP 3 C U...

Page 29: ... 1 C CUT 1 C CUT CUT 0 C 0 C When shipping from factory Left compartment cut compensation Too cold compensation Too warm compensation Left compartment keeping temperature compensation value JCR1 JCR2 CUT 1 C CUT 1 C CUT CUT 0 C 0 C When shipping from factory Right compartment cut compensation Too cold compensation Too warm compensation Right compartment keeping temperature compensation value GR K1...

Page 30: ...n and Description of Circuit 10 Button input and display part illumination circuit LED MODULE TYPE The above circuit determines which buttons are pressed and drives the LED display whose driving method is a scan method ...

Page 31: ... If there is no communication between these boards for 30 seconds a communication error occurs MICOM Function and Description of Circuit 11 Communication circuit between Main PCB and Display PCB LCD type only MAIN PCB MAIN MICOM DISPLAY MICOM DISPLAY PCB DV 12V GND SEND Error state RECEIVE Notch state PCB PWB ASSEMBLY DISPLAY ...

Page 32: ...oo great a margin of error For the left compartment sensor measure both ends of Nº 1 and Nº 2 after separating CON2 from the PCB Assembly For the right compartment sensor measure both ends of Nº 1 and Nº 2 of CON3 For the outside ambient sensor measure both ends of Nº 1 and Nº 2 of CON5 Measuring Temperature C Left Sensor Right Sensor 20 C 77 KΩ 15 C 60 KΩ 10 C 47 3 KΩ 5 C 38 4 KΩ 0 C 30 KΩ 5 C 24...

Page 33: ...34 MICOM Function and Description of Circuit 4 PCB Parts Drawing and List 1 LED MODULE TYPE MODEL GR K16 18SLQ 1 Parts Drawing of MAIN PCB Assembly ...

Page 34: ...35 MICOM Function and Description of Circuit Parts List ...

Page 35: ...36 MICOM Function and Description of Circuit 2 Parts Drawing of DISPLAY PCB Assembly and Parts List ...

Page 36: ...37 MICOM Function and Description of Circuit 2 LCD TYPE MODEL GR K20SVZ 1 Parts Drawing of MAIN PCB Assembly ...

Page 37: ...38 MICOM Function and Description of Circuit Parts List ...

Page 38: ...39 MICOM Function and Description of Circuit 2 Parts Drawing of DISPLAY PCB Assembly and Parts List Parts List ...

Page 39: ...LQ 1 PCB Circuit Drawing Left Condensation H Right Condensation H Right Ripening H Left Ripening H R1 SENSOR Left Sensor R2 SENSOR Right Sensor Temperature Compensation1 Temperature Compensation2 WIRE CUT Left Right Remarks Remarks Remarks Left Left Right Right Compensation warmer cooler Resistance Value ...

Page 40: ...41 Power Lock Unlock Select Foods Rlpening Cycle Left Comp Flavar Keeping Select Temperature Power Lock Unlock Select Foods Rlpening Cycle Right Comp Flavar Keeping Select Temperature ...

Page 41: ...of Circuit Temperature Compensation1 Left Right Remarks Remarks Remarks Left Left Right Right Compensation warmer cooler Resistance Value Temperature Compensation2 WIRE CUT R1 SENSOR Left Sensor R2 SENSOR Right Sensor Left Condensation H Right Condensation H Right Ripening H Left Ripening H ...

Page 42: ...43 ...

Page 43: ...ÀÀ ÀÀÀÀÀÀÀ À ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ À ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀÀÀ ÀÀÀÀÀÀÀ ÀÀÀ...

Page 44: ...he PCB There is danger of a short as a lead wire is broken or cover is stripped 2 Display Frame Assembly When replacing a display PCB remove it using a slotted screwdriver 1 Peel off the right side of trim panel 2 Insert the end of a slotted screwdriver into the rectangular hole see drawing 3 Push the screwdriver toward the back and remove the Driver Frame Assembly Be extremely careful so the Disp...

Page 45: ...16SLQ Exploded View and Parts List 411A 329C 420A 203B 319C 317A 327A 315A 315B 315C 304A 307A 314A 308A 312A 619A 618A 501A 502B 323B 310B 309A 619B 315D 232A 220A 220B 210A 222A 223B 223A 231A 221A 310A 200A 420B 203A 604A 128E 281H 420B 604A 128E 281E 128D 281G 281D 128D ...

Page 46: ...47 Exploded View and Parts List 148A 148C 248D 147A 147C 270A 250A 251A 248A 148B 249G 249F 249D 249B 249C 407A 407B 408A 102A ...

Page 47: ...Q 501A 502B 604A 420B 411A 329C 420A 319C 203A 317A 327A 315A 315B 315C 304A 307A 314A 308A 312A 619A 618A 323B 310B 309A 619B 315D 222A 220A 220A 200A 210A 222A 223A 223A 221A 221A 310A 128E 281H 420B 604A 128E 281E 128D 281G 281D 128D 203A ...

Page 48: ...49 Exploded View and Parts List 102A 147A 270A 250A 251A 147C 249G 248D 249F 249D 249B 249C 248A 407A 407B 408A ...

Page 49: ...t 411A 329C 420A 203B 319C 317A 327A 315A 315B 315C 304A 307A 314A 308A 312A 619A 618A 501A 502B 323B 310B 309A 619B 315D 232A 220A 220B 210A 222A 223B 223A 231A 221A 310A 200A 420B 203A 604A 128E 281H 420B 604A 128E 281E 128D 281G 281D 128D ...

Page 50: ...51 Exploded View and Parts List 250A 270A 102A 407A 407B 408A 148B 148A 148C 248A 249G 249F 249D 249B 249C ...

Page 51: ...50JA1236H 1 221A HINGE ASSY R R DCA200159B 4775JA2091B 1 222A HINGE ASSY R L DCA200159A 4775JA2091A 1 231A HINGE ASSY L R DCA200159C 4775JA2091C 1 232A HINGE ASSY L L DCA200159D 4775JA2091D 1 223A COVER HINGE FRONT CBA100260H 3550JA1235H 1 223B COVER HINGE FRONT CBA100259H 3550JA1234H 1 248A BASKET ASSY DCA200197B 5005JA2031B 1 249B BASKET OUT CBA100337A 5004JA1147A 1 249C HANDLE CH CBA200128A 365...

Page 52: ...OTOR CBA100135A 4810JA1030A 1 323B WIRE COND ASSY DCA100155B 1 327A RUBBER MOTOR N CKA300001B J756 00008B 1 329C FAN ASSY DCA100163A 5901JA1013A 1 407A CAPACITOR R CMB200002F 0CZZJB2003F 1 407B CAPACITOR M S CMB200001P J513 00012P 1 408A HOLDER CAPACITOR CBA200004A J580 00014A 1 411A POWER CORD ASSY DCA200106C 6411JB2025C 1 420A MOTOR COOLING CLP100005S 4680JB1035S 1 420B COOLING PACK CBA200111A 3...

Page 53: ... 1 249C HANDLE CH CBA200128A 3650JA2097A 2 249D BASKET INNER CBA100340B 5004JA1150B 1 249F BASKET SMALL CBA200127A 5004JA2004A 1 249G COVER MAGIC ROOM CBA200130A 3550JA2199A 1 250A PWB ASSY DISPLAY L DCA100256A 6871JB1191A 1 251A SUPPORTER PWB CBA100446A 4980JA1047A 1 270A DECO CONTROL CBA100405B 3806JA1107B 1 281D CAP HINGE RL CBA300138K 5006JA3084K 1 281E CAP HINGE ASSY DCA300042S 1 281G CAP HIN...

Page 54: ... 0CZZJB2003F 1 407B CAPACITOR M S CMB200001P J513 00012P 1 408A HOLDER CAPACITOR CBA200004A J580 00014A 1 411A POWER CORD ASSY DCA200106C 6411JB2025C 1 420A MOTOR COOLING CLP100005S 4680JB1035S 1 420B COOLING PACK CBA200111A 3005JA3001A 2 501A PWB ASSY MAIN DCA100253E 6871JB1196E 1 502B CASE ASSY PWB DCA200095A 3111JA2009A 1 604A COVER REF ASSY DCA200157D 3551JA2105C 2 618A BRACKET 3 WAY CAB300100...

Page 55: ...55B 1 223B COVER HINGE R FRONT CBA100259B 3550JA1234B 1 231A HINGE ASSY L L DCA200159F 4775JA2091F 1 232A HINGE ASSY L R DCA200159E 4775JA2091E 1 248A BASKET ASSY DCA200197B 5005JA2031B 1 250A PWB ASSY DISPLAY L DCA100255B 6871JB1198B 1 249B BASKET OUT CBA100337A 5004JA1147A 1 249D BASKET INNER CBA100339B 5004JA1149B 1 249F BASKET SMALL CBA200126A 5004JA2003A 1 249G COVER MAGIC ROOM CBA200129A 355...

Page 56: ...08B 1 329C FAN ASSY DCA100163A 5901JA1013A 1 407A CAPACITOR R CMB200002F 0CZZJB2003F 1 407B CAPACITOR M S CMB200001P J513 00012P 1 408A HOLDER CAPACITOR CBA200004A J580 00014A 1 411A POWER CORD ASSY DCA200106C 6411JB2025C 1 420A MOTOR COOLING CLP100005S 4680JB1035S 1 420B COOLING PACK CBA200111A 3005JA3001A 2 501A PWB ASSY MAIN DCA100252F 6871JB1197F 1 502B CASE ASSY PWB DCA200095A 3111JA2009A 1 6...

Page 57: ...58 Memo ...

Page 58: ...P No EBAX00030A Printed in Korea ...

Reviews:

No comments