LG LRV650TT Service Manual
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LG LRV650TT Service Manual

LG LRV650TT Service Manual

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WINE CELLAR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY
PRECAUTIONS" IN THIS MANUAL.
LRV410TT
LRV650TT
LRV810TT

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Summary of Contents for LG LRV650TT

  • Page 1 WINE CELLAR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. LRV410TT LRV650TT LRV810TT...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. Product Specification............................ 3 2. Component Names and Motions........................4 3. Exterior ................................7 4. Circuit Diagram ............................12 5. Micom Function and Circuit Diagram ..................... 14 6. Special Features ............................30 7. Standard Self-Diagnostic Function......................31 8.

  • Page 3: Product Specification

    PRODUCT SPECIFICATION 1. Product Specification 1-1. Rated, product specifications Model Name LRV410TT LRV650TT LRV810TT Regular Contents 4.7cu.ft 7.5cu.ft 9.9cu.ft Exterior measurements 595 X 580 X 820 595 X 580 X 1185 595 X 580 X 1475 (Width X Depth X Height)

  • Page 4: Component Names And Motions

    2-3 Others • Glass Holder -Hangs wine glasses. (LRV810TT) • Wine Rack -Stores leftover wine (tilted). (LRV810TT, LRV650TT) • Locking Device -Key is enclosed in the inside of the refrigerator. • Leg Adjustor (Front & Back, Left & Right, one each) -Please level the product using the leg adjustor.
  • Page 5 COMPONENT NAMES AND MOTIONS LRV810TT *Glass tray Operation panel Light bulb • Light bulb inside the wine fridge can be turned on or off by pressing the button on the operation panel. • Light bulb inside the wine Wine shelf fridge will automatically turn off after the door is open for an hour.
  • Page 6 COMPONENT NAMES AND MOTIONS LRV650TT Operation panel Light bulb • Light bulb inside the wine fridge can be turned on or off by pressing the button on the operation panel. Wine shelf • Light bulb inside the wine fridge will automatically turn off after the door is open for an hour.

  • Page 7: Exterior

    EXTERIOR 3. Exterior 3-1. Exterior LRV410TT - 7 -...
  • Page 8 EXTERIOR LRV650TT - 8 -...
  • Page 9 EXTERIOR - 9 -...
  • Page 10 EXTERIOR LRV810TT - 10 -...
  • Page 11 EXTERIOR - 11 -...

  • Page 12: Circuit Diagram

    CIRCUIT DIAGRAM 4. Circuit Diagram 4-1. Circuit Diagram : Indicated component is a safety part. (In case of a replacement, please use a designated part for its function and your safety.) LRV410TT MODEL: LRV410TT This product is powered by electricity. Once the unit is unplugged, please wait at least 5 minutes before you plug it back in.
  • Page 13 CIRCUIT DIAGRAM LRV650TT/LRV810TT - 13 -...

  • Page 14: Micom Function And Circuit Diagram

    MICOM FUNCTION AND CIRCUIT DIAGRAM 5. MICOM Function and Circuit diagram 5-1. Functions 5-1-1. Displays 1. At the first power-up, the machine is unlocked. And, the initial setting is 57°F/RED for top, 46 F/WHITE for bottom. 5-1-2. Lock/Unlock Function 1. By pressing the ‘Lock/Unlock’ button for 3 seconds, it will unlock the machine. If the control panel is idle for 10 second, it will automatically lock itself.
  • Page 15 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-1-4. DISPLAY OFF Function 1. With the lock off, by pressing the ‘Power’ button for 3 seconds, every LED turns OFF and the machine switches to suspension mode. 2. In the suspension mode, by pressing ‘Power’ button for 3 seconds, the suspension mode is cancelled and the Top/Bottom part displays its prior values.
  • Page 16 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-1-7. Exterior Temperature Counter Operation 1. A sensor senses exterior temperature and keeps interior temperature constant Wine Cellar Storage Normal Operation Temperature Exterior Temperature Counter Operation Spring Summer Fall Winter Seasons 5-1-8. Electronic Parts Consecutive Operation Electronic parts, such as COMP, top/bottom, will operate in consecutive order to prevent a noise and parts damages from multiple parts operating at an initial power-on and a series of test runs.
  • Page 17 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-1-9. Malfunction Diagnosis Function 1. This function is to facilitate SVC at a time of a problem during an operation. 2. Even when a problem occurs, display buttons and LED will operate in normal condition. You can identify the problem by pressing both ‘△’...
  • Page 18 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-2. Circuit Diagram 5-2-1. Power Supply Diagram (VAREF) (VASS) Power supply diagram consists of a noise reduction part and a SIMPS(Switching Mode Power Supply), a rectifying part (BD1, CE1) (from AC to DC), a switching part (IC3) for switching the DC voltage, TRANS for delivering the energy from Switch 1 to #2, Switch #2 for supplying power to MICOM and IC, and a FEED BACK(IC4) for sending a feedback to TRANS in order to maintain a consistent voltage at #2.
  • Page 19 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-2-4. Load Drive Circuit Load Type COMP Top Maturing Heater Bottom Maturing Heater Measuring Parts (IC2) Below 1V Condition 5-2-5. STEPPING MOTOR Operation Circuit (3-WAY VALVE) CON6 According to a specified STEP numbers, send ‘HIGH’ and ‘LOW’ signals through MICOM PIN #16, 15, 18, and 17. Revolving magnetism forms on the motor coil.
  • Page 20 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-2-6. Switch Input Circuit Input Circuit is to sense a TEST-S/W signal for refrigerator inspection. 5-2-7. Temperature Sensing Circuit This circuit consists of top/bottom sensor, top EVA/bottom EVA sensor for controlling top/bottom parts’ storage/maturing temperature, and an exterior temperature sensor. Each sensor’s SHORT and OPEN condition is as followed. ℃...
  • Page 21 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-2-8. Temperature compensation and overcooling / insufficient cooling, maturing temperature cut compensation circuit. (1)Temperature Compensation UCR1 (AIN5) LCR2 (AIN6) A circuit to input a value of compensation temperature to MICOM for controlling top/bottom storage temperature Bottom Value of temperature Others...
  • Page 22 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-2-9. Communication Circuit between MAIN PCB and DISPLAY PCB Communication circuit for an information exchange between MAIN MICOM and DISPLAY PCB in MAIN PCB If there is an interruption in information exchange between MAIN MICOM and DISPLAY PCB in MAIN PCB for more than 30 seconds, it causes a communication malfunction.
  • Page 23 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-3. Sensor Resistance Specification Chart Temperature Top · Bottom Sensor, Top · Bottom EVA Sensor, Measurement (°C) Exterior Sensor -20 °C [-4 °F] 77 KΩ -15 °C [+5 °F] 60 KΩ -10 °C [+14 °F] 47.3 KΩ...
  • Page 24 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-4 MAIN PWB ASSEMBLY AND PARTS LIST 5-4-1 MAIN PWB ASSEMBLY - 24 -...
  • Page 25 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-4-2 Replacement Parts List - 25 -...
  • Page 26 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-4-3 PWB ASS’Y, DISPLAY AND PARTS LIST - 26 -...
  • Page 27 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-5 PWB DIAGRAM 5-5-1 PWB Assembly Main DIAGRAM (* PWB circuit diagram may vary a little bit depending on actual condition.) - 27 -...
  • Page 28 MICOM FUNCTION AND CIRCUIT DIAGRAM - 28 -...
  • Page 29 MICOM FUNCTION AND CIRCUIT DIAGRAM 5-5-2 PWB Assembly DISPLAY DIAGRAM (* PWB circuit diagram may vary a little bit depending on actual condition.) - 29 -...

  • Page 30: Special Features

    SPECIAL FEATURES 6. Special Features 6-1. Direct cooling system prevents sudden temperature change An evaporator (laid inside of the back panel) prevents a sudden temperature change. The interior sensor located in the upper/lower part divider controls the temperature, matching the interior and the actual wine temperature. Interior temperature can be adjusted in a range between 6~18 °C.

  • Page 31: Standard Self-Diagnostic Function

    STANDARD SELF-DIAGNOSTIC FUNCTION 7. Standard Self-Diagnostic Function In case if there is any malfunction in the wine cellar, a symbol automatically is indicated on the “set temperature” display. Symbol explanation is on the circuit diagram on the back panel of the product. 7-1.

  • Page 32: Maintenance

    MAINTENANCE 8. Maintenance 8-1. Installation Instruction (Leveling the product) (Ensuring heat radiation area) Two people are required in order to perform the leveling. The heat radiation grill emits heat. Please leave enough space, more than 10cm for top, and 0.5cm for left and right 1.
  • Page 33 MAINTENANCE 8-3. Temperature control The regulated temperature range is 43°F to 64°F Lock/Unlock Function Light Switch To change the temperature, Push for ON, Push again for OFF Indication of “TOP” Indication of “BOTTOM” press the button for 3 seconds. (Light wil automatically turn off set temperature set temperature after one hour.)
  • Page 34 MAINTENANCE 8-4. Correct Usage 8-4-1. How to place the wine bottle? * When placing in the wine bottle, please place bottles inserting direction crossing each other as shown as in the picture. * If you overload one shelf, it may cause inconvenience when you take out the bottle.

  • Page 35: Handle Disassembling, Assembling Instruction

    Handle Disassembling, Assembling Instruction 9. Handle Disassembling, Assembling Instruction 9-1. Before you disassemble the handle. 1. Empty the refrigerator before you disassemble the handle. 2. Following tools are required. 3. Do not tilt the refrigerator. 4. Be careful not to drop the handle when disassembling/assembling. Rubber hammer (+), (-) Driver.

  • Page 36: Service Parts Chart

    SERVICE PARTS CHART 10. Service Parts Chart Indicated is a safety component. Warning (When replacing the part, please use a designated part for your safety and its function.) 10-1. Spread sheet 1(LRV410TT) 120D 503B 6 09H 5 03F 281F 2 30A 307A 316B 327A...
  • Page 37 SERVICE PARTS CHART 10-2. Spread sheet 2(LRV650TT) 120D 5 03B 609H 503F 1 49B 120D 1 45D 1 28D 1 45C 281F 1 28C 2 30A 619A 319A 307A 316B 327A 316A 328B 5 01A 305A - 37 -...
  • Page 38 SERVICE PARTS CHART 10-3. Spread sheet 3(LRV810TT) 120D 503B 609H 503F 120D 1 45D 1 28D 1 45C 1 28C 281F 2 30A 619A 319A 307A 316B 327A 316A 328B 5 01A 305A - 38 -...
  • Page 39 P/No. 3828JD8886A JUL., 2005 Printed in Korea...

This manual is also suitable for:

Lrv410ttLrv810tt

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