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REFRIGERATOR SERVICE MANUAL

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1. YAR D 1 DIGITAL PART CIRCUIT DIAGRAM mm ee DECO CASE ASSEMBLY REFRIGERATOR MAIN puce i BN S EXTERNAL SOUND PCB REF ERR PS OUT REF ERR P2 OUT A Fge 3 REF ERR P1 OUT TM k a A Oer 744 4 1 KA 51 5 REF ERR PO OUT AC POWER IN L 7 2 E j DIGITAL POWER S W Te 6 5V OUT AC POWER IN N 21 21 5 5 7117 N C 8 ot A 7 LINE nur A ug MT SPEAKER 4 LEFT BK SPEAKER RIGHT n 5528 ak Mei EALERTS mi Eere EIS SUB CONTROLLER BO 4 80
2. 1 4 Hard Disk Part e Unscrew 1 point e Disassemble after disconnecting 1 2 133 HOW DISASSEMBLE AND ASSEMBLE DIGITAL SECTION 1 5 Power Supply Part e Unscrew 4 points e Disassemble after disconnecting 1 2 1 6 Sub PCB Part e Disassemble after disconnecting 1 6
3. v VIDEO OUT Du t J1j sic z AUDIO L OUT 2 2 554 AUDIO R OUT 3113 GND alla TV TUNER 42 12v GND 242 RD TXD rere al BIES POWER IN L ml ae oe R Zw vallo POWER IN N 000 ash sid e reset dates ta tct tec i cett etit n ee T 6 o o S 2 IPEPEREREIT MONITOR ASSEMBLY gt gt TV IN H 1955505995522 amp amp amp amp IN Diti TOUCH SCREEN PANEL I RT TE HERE 1 a OUCH THE DSR3 T S 7 TR CONTROLLER 522 RTS3 T S 2 2H i eNd 1 s 3 186 12V INV 4 4 N C 21112 TOUCH INV cwo w 515 8 TET LED MONITOR 3j 31 80 RXD3 T S 6 6 2 7 7 RXD GND T S 8 8 wu SHS BACKLIGHT_ON INV 9 9 11
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5. DIGITAL CONTROLLER CON3 5 67 pie 25 iu fe n 8 Section B Error sensing 5 signal transmitter 2 E for refrigerator S 8 H 1 ew 17 Ene mo S 3 Fe 5 ESI T Error sensing 8 s es S T a I ees Signal receiver for 5 ale n n A Lb Peo refrigerator E M ah ER 5 m Er 19 p P3 GND1 GND2 1 GNDI nn GNIS ME m ja GNDI 4 pour wA j GND1 GNDI GNDI GNDI Section E MICOM PART driving power AMP PART AC IN CON7 Da Section F HEADPHONE PCB 1 n T Ti Em HEADPHONE output EE terminal when inserted TERMAR Ti speaker output is cut and TTL em S R Eie bobad 5 154 2 R SPEAKER OUT output is done only er 1 Tele through HEADPHONE TE 7 2 27 vom x can SOUND IN R 1 pe T 100u 16v 3 og CONS lt E of small Se v yw 1 6w Signal sound emitted Bari by MAIN CONTROLLER 104 m Transmits error sensing signals remote control signals changed signals to main controller A Transmits through speakers the signals amplified by
6. TIIN ant 1 7 Ref Door Part e Disassemble DECO CASE after disconnecting 1 4 e Disassemble COVER S disconnecting 5 10 e Disassemble HINGE COVER after unscrewing 11 e Disassemble the socket only when both sides are being pressed in e Disassemble 6 e Disassemble REF DOOR after disconnecting HINGE 134 HOW DISASSEMBLE AND ASSEMBLE DIGITAL SECTION 2 MONITOR PART 1 Disassemble Monitor Cover Frame LCD 2 Disassemble Bracket after unscrewing 4 Unscrew 1 2 135 EXPLODED VIEW FREEZER DOOR PART 136 EXPLODED VIEW REFRIGERATOR DOOR PART EXPLODED VIEW FREEZER COMPARTMENT 138 EXPLODED VIEW REFRIGERATOR COMPARTMENT 139 EXPLODED VIEW DISPENSER PART 140 EXPLODED VIEW ICE amp WATER PART 141 EXPLODED VIEW MACHINE COMPARTMENT 142 EXPLODED VIEW SPEAKER amp MONITOR PART 143 DIGITAL PART COMPONENTS
7. c A lt gt lt Ojo mle 5 Sg nN urlo lt 0 lt C SE du T Don DIGITAL PARTS MANUAL 10 CCD CHARGE COUPLED DEVICE CAMERA 10 1 Function This changes the external video signal received through the lens into an electronic signal and transmits to main controller 10 2 Outline Diagram and INPUT OUTPUT Structure 10 2 1 Outline Diagram 32 6 28 1 13 8 351 12 5 922 5 5 0 x g JST BM05B SRSS TB 8 8 8 8 0 L1 4 92 2 m 10 2 2 INPUT OUTPUT Structure CONNECTOR PIN INPUT OUTPUT SYMBOL DESCRIPTION INPUT 12V DC 12V GND GND GND OUTPUT VIDEO CAMERA VIDEO OUT GND GND CAMERA VIDEO GND OUTPUT MIRROR CAMERA MIRROR 10 3 Specifications of parts 1 CCD Camera Module Specification Operating Voltage DC 12 1V Current Consumption Max 100mA 10 Image Sensor 1 4 inch 270 000 Effective Pixel 512 H X 492 V Signal System NTSC Horizontal Frequency 15 734kHz Vertical Frequency 59 94kHz S N Ratio 48dB min Video Output
8. EXPLANATION FOR MICOM CIRCUIT ma 111 pn He 2H2 315 141 CONTROLLER SUB 5 COMMUNICATION t jeje 717 UTE HEATER SHEET 2 DUCT DOOR pas 4 2 a 203 NY 22 2 Pas lt RT SENSOR 104 Pes 52 E 1 F SENSOR ANO x TI zt E Be 2 pes 4 T X 3 em D SENSOR ans cas 4 A RIS 5 F 000R s w 6 p54 C FAN Psi C FAN LOCK P53 F FAN PWM P50 F FAN LOCK E Ts 247 4 91 DAMPER T 2 REED S W H BAR DOOR S W a pas x x 3 R DOOR S W eT Im 4140 ang 88 5 e RI SENSOR al x n PEN 6 CN 2 mo He AN3 eca L 7 R2 SENSOR i 8 9 E R35 Dc 264 1 ICE MAKER SENSOR u 7 2 aA 5 3 4 1 a E 5 9 e ICE MAKER i 6 TEST S W 2 E R58 i 7 ICE MAKER MOTOR 25 27 28 33 35 51 CIRCUIT THE CIRCUIT DRAWINGS CIRCUIT DIAGRAM MODEL GR D267 U HOME BAR PART H BAR HEATER DOOR S W C
9. IDE IDE Connector a YL Yellow RD Red U VIEW A 3 4 SPEC of parts 1 HARDDISK SPEC 3 5 MAKER FUJITSU MAXTOR LG IBM SAMSUNG WESTERN DIGITAL Storage Capacity Over 20GB Rotation Speed Over 5 400rpm Ultra DMA 100 support average seek time 9 5ms under 2 Operating Environment Operating temperature 5 C 41 F 55 C 131 F Operating humidity 8 80 3 Storage Environment Storage temperature 40 C 40 F 60 C 140 F Storage humidity 5 85 107 DIGITAL PARTS MANUAL 4 TV TUNER 4 1 Function After receiving and handling the video and audio signals through cable it transmits the signals to the video input section of the main controller 4 2 Outline Diagram and INPUT OUTPUT Structure 4 2 1 Outline Diagram 5 12 11 ECIO 13 50 amp 600 6 EC13 VIEW A GE EC3 jr 22 Li lt gt amp 8 EC21 a e Se Ta Qe 84 im D EC4 2 522 Ri n GE 02 80 B gen GLRG VIDEO_OUT 6 D 1206 T R6 5006 quU Ul J3 22 09 0 gt 108 DIGITAL PARTS MANUAL 4 2 2 INPUT OUTPUT Struc
10. Cover PWB Back dd Handle Frame Display Remote Control Receiver Camera Mic Dispenser Lamp Monitor Ice amp Water Dispenser Button Icemaker n Bank Ice Bm 1000000 Cover Lamp F Bro m Shelf F 55 4 mie Drawer Supporter Basket Cover Lower Adjusi Screw left Optional Part Control Box R Dairy Product Corner Cover Lamp R U Cantilever Shelf Wine Rack Egg Box Snack Corner Slide Out Cantilever Shelf Cover Guide Bottle Cover Lamp R L Fruit Vegetable Drawer Vegetable Chilled Drawer Guide Bottle Supporter Basket Adjust Screw right Vegetable Chilled Drawer Convertible Switch HOW TO INSTALL REFRIGERATOR 1 How to Adjust Door Height of Refrigerator Make the refrigerator level first If the refrigerator is not installed on a level floor the height of freezer and refrigerator door may not be the same 1 If the height of freezer door is lower than the 2 If the height of freezer door is higher than the refrigerator door refrigerator door Height Difference IT 22 Height gt Difference Height Difference Insert a driver into the groove of adjusting screw Insert a driver into the groove
11. AMP 110PLUG AMP 205PLUG 13 3 Specifications of parts Power Rating RMS 3W Peak 5W Size 110 X 42 5mm Total weight 151g Impedence 4ohm 0 6ohm Resonance Frequency 180Hz 36Hz SPL 84dB W 2dB Response FO 20kHz Distortion 5 Max 120 DIGITAL PARTS MANUAL 14 HDD SHERIFF 14 1 Function The HDD SHERIFF is a program protecting the data stored in the hard disk It can be booted in two modes Supervisor Mode Mode which enables the modification of the contents in the C drive When updating or modifying files the new contents are reflected only if entered through the supervisor mode Protection Mode Mode which protects the drive so that it returns to the original state when rebooted even after modifications have been made 14 2 Program Modification Method after entering in the Supervisor Mode LG Logo Starting HDD Sheriff Push Management SWITCH located on top of the refrigerator door Starting HDD Sheriff Supervisor Mode Starting Windows 98 Enter the Supervisor Mode Enters the Background screen of Windows Digital function ends and enters Windows Press E with the Window key already being pressed Use after installing the keyboard to the USB 1 or 2 port in the back of the refrigerator Carry out Modification work with the Windows Explorer frame open After finishing work close whole work frame If it i
12. 1 7 Option designation circuit model separation function Su Bl 13 FUR i PN s CONS R49 2K 1 P47 il De 9 9 DAMPER REED S W 37 P34 ge P33 The above circuits are used for designating separation by model as option and notifying the MICOM Designation of option by model and the application standards are as follows gt These circuits are accurately pre adjusted in shipment from factory and so you must not alter the option Separation Connection Status Application Standard Connected Export model OP1 CUT Domestic model 38 EXPLANATION FOR MICOM CIRCUIT 1 8 Fan motor driving circuit freezing chamber M C chamber 1 This circuit performs function to make standby power 0 by cutting off power supplied to ICs inside of the fan motor when the fan motor is OFF 2 This circuit performs a temporary change of speed for the fan motor and applies DC voltage ranging between 7 5V an 16V to the motor 3 This circuit futher functions to stop the fan motor further by cutting off power applied to the fan motor as it senses the fan motor s RPM 39 part 6 part part Motor OFF 5V 2V or less 2V or less OV Motor ON 2 3V 12 14V 8 16V OV CON7 MICOM
13. Does the Sub Cont LED switch on and off once Ye D es Is the Sub Cont No Check the Main Cont input voltage gt normal refer to O Power Connector structure and reconnect Check the change in voltage of Sub Cont No 4 5 remote control signal input when pressing the remote control button y Yes Check the reconnection of Is gt the remote control receiver connector and check after DC3V DCSV replacing the remote control receiver Yes gt Replace Sub Cont Reconnect after 59 checking Main Cont parallel connector 127 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms Contents to check Measures There is no output of sound Check if the sound output function works Main Cont Sound Out Check sound output Sound out Install headphone to terminal Yes Is there any output of sound s the connection and I O of Sub Cont CON 4 5 6 7 normal refer to O structure Is the connection to the speaker section normal Check normal output after replacing Sub Cont Yes Is the output normal No No Replace Main Cont No Reconnect after checking Sub Cont CON 4 5 6 7 connector No ls there noise Reconnect aft
14. 101 7 a uw dm 8 ga iL 9 017782013 IC DRAVING 7 2 80 TOSHIBA 1 1010 10 ze Pan d 1 OISTLKEO02A_ IC STANDARD LOGIC IA78L05F KEC 1 102 1 12 01STLKEO003A_JIC STANDARD LOGIC KIA7042AF KEC IC103 1 13 01RH934600D IC ROHM BROSLC46RF W_ EEPROM ROHM IC104 1 714 015 004 IC STANDARD LOGIC KRAI06S KEC Q105 1S OISTLKEO05A IC STANDARD LOGIC RC106S KEC 0101104 1 16 0ISTLKEOO6A TC STANDARD LOGIC 1298 0106 1 19 0570 000128 RESONATOR CST4 00MGW TFOI MURATA 5 101 20 ais 22 on e3 0CE337CH630 CAPACITOR FIXED ELECTRULYTIC 330UF SHL SD 25V 20 SAMWHA 101 2 e4 0CE107VF6DC CAPACITOR FIXED ELECTROLYTICIOOUF MV 16V 20 SMD RUBYCON CE102 103 ee 0CE476VH6DC CAPACITOR FIXED ELECTRULYTIC 47UF MV 25V 20 SMD RUBYCUN 104 8 28 0 1042 94 CAPACITDR FIXED CERAMIC 100NF 2012 50V 807 207 MURATA 101 108 29 30 ede 3106010006676 RESISTUR FIXED CARBON FILM 100 OHM 1 4 W 5 3216 ROHM 3e 0RDe200E672 RESISTUR FIXED CARBON FILM 220 OHM 1 8 5 2012 ROHM R118 23 33 08047000676 RESISTUR FIXED CARBON FILM 470 OHM 174 W 5 3216 ROHM R124 146 1 34 0RD6800G676 RESISTUR FIXED CARBON FILM 680 OHM 174 5 3216 ROHM R147 35 5 ga 36 oe ae 2 37 0RD1001E672 RESISTOR FIXED CARBON FILM OHM 1 8 57 2012 ROHM R119
15. Bad cooling Wrong Refrigerator temperature Defective Damper Check AC damper Using a tester see if AC Reconnect lead motor and reed switch damper motor and reed switch wire and lead wire are cut lead wire are cut with a tester Check damper Refer to AC damper in parts Replace AC damper part repair guide or refrigerator control box ASSEMBLY Check AC damper Refer to AC damper in parts Replace relay or Refer to single Motor drive relay in PCB repair guide PCB motor damper drive circuits in circuit explanation Foreign materials in AC damper baffles Check AC damper baffle visually Remove foreign materials Ice formation on AC damper baffles Check if AC damper Heater wire is cut with a tester Replace AC damper or refrigerator control Box ASSEMBLY Defective refrigerator sensor Defective refrigerator sensor parts Check the resistance of refrigerator sensor with a tester Replace refrigerator sensor Refer to sensor resistance characteristic table in circuit explanation Refrigerator sensor is substituted for other sensor Visually inspect the sensor color in the circuit main PCB sensor housing Repair main PCB sensor housing Defective refrigerator sensor assembly condition Visually if refrigerator sensor is not fixed at cover sensor but inner case visually Reposition the refriger
16. ls the connection between back of the monitor and the LCD connector normal No Yes HARDDISK replace Reconnect connector Replace Main Cont 123 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms Contents to check Measures B Monitor Error Symptom 3 No display at all Check power input output Is the power switch on the top of the door turned on LED location ATX power lead in sector ls the power LED of the Main Cont on ls the power supply input voltage normal AC 90 264V Is the power supply output voltage normal refer to O structure Yes Is the connection between Main Cont TMDS LCD Touch INV normal Is the connection between monitor joint TMDS LCD Touch INV normal No gt Is the LCD inverter No input voltage normal refer to NO structure Yes 4 Reconnect after checking connection of input output Replace power supply Replace Main Controller Reconnect connector Check for disconnected cable for Main Cont Touch INV connector and reconnect If there is still no normal output after replacing LCD inverter replace Main Cont 124 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms C
17. removal or temperature fuse pull out of RPM connector indicated minimum 4 hours after failure occurs 6 Failure of BLDC FAN Er FF Poor motor connection of wires OFF check every at freezing section to fan Contact of structures to 30 minutes Fan Snapping or short circuit of 7 Failure of BLDC FAN Er CF L wire if there is no fan motor Standard OFF check at machine section signal for more than 60 seconds RPM every 30 minutes in operation of fan motor 8 Failure of Er CO Connection between main PCB Standard Communication and display PCB Snapping or RPM short circuit of L wire Transmission between main PCB and display PCB Poor TR and receiving part 9 Abnormal Er dP Faulty damper motor Lead wire of electronic single damper lead switch in out or short operation motor Damper circuited Interference of foreign every hour materials in damper baffle or EPS 10 Failure of Setting temperature Snapping or short circuit of outside Outside Sensor display Note 1 temperature perceiving sensor 11 Failure of ice Setting temperature Snapping or short circuit of ice removal sensor display Note 2 making sensor 12 Failure of Setting temperature Poor motor or Hall IC within ice maker Icemaker unit display Note 2 unit Snapping or short circuit of Wire Poor main PCB drive circuit In display of the
18. 1 3 Cool Air Circulation Freezer Compartment Refrigerator Compartment g WA gum cm 1 gt Y m s 4 10 COOLING CYCLE AND REFRIGERANT 2 Description of each component NO NAME FUNCTION REFRIGERANT IN AND OUTLET 1 COMPRESSOR Compresses refrigerant from low 0 kg cm to LOW PRESSURE gt HIGH PRESSURE high pressure 8 12 kg cm GAS 0 kg cm GAS 8 12 kg cm TEMP 30 C 86 F TEMP 80 1 76 F 120 C 248 F 2 CONDENSER Refrigerant transforms from high pressure gas HIGH PRESSURE gt HIGH PRESSURE to high pressure liquid in condenser GAS 8 12 kg cm LIQUID 8 12 kg cm This phase transfromation dissipates heat TEMP 80 1 76 F TEMP 40 1 04 F 120 C 248 F 60 C 140 F 3 DRIER Drier absorbs moisture in the system moisture absorption equipment 4 CAPILLARY Long and narrow tubes Refrigerant pressure HIGH PRESSURE gt LOW PRESSURE TUBE drops rapidly as refrigerant passes through the LIQUID 8 12 kg cm2 LIQUID 10 kg cm tube TEMP 40 1 04 F TEMP 27 C 17 F 60 C 1 40 F 5 EVAPORATOR Refrigerant transforms from low pressure liquid LOW PRESSURE LOW PRESSURE to low pressure gas This phase change absorbs LIQUID 0 kg cm GAS 0 kg cm heat from the surrounding air and food This TEMP 27 C 17 F enables foods to freeze in the freezer and to s
19. 59 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 7 Sounds 1 Compressor compartment operating sounds Transformer sound Its own fault Core gap Bad connection Correct screw connection Drip tray vibration sound Bad assembly Distortion Foreign materials inside r Back cover machine sound Bad connection L Partly damaged UL Condenser drain sound Not connected Bad pipe caulking 2 Freezer compartment sounds Fan motor sound Normal operating sound Vibration sound bushing seat Bad torque for assembling motor bracket Sounds from fan Fan guide contact contact Shroud burr contact r Damping evaporator contact Residual frost contact Tr Damaged heater cord Narrow evaporator interval Unbalance fan sounds Unbalance Surface machining conditions r Fan distortion Misshappen Burr Ice on the fan Air intake opposite to motor bushing assembly m Motor shaft Supporter disorted contact sounds Tilted during motor assembly r Resonance Evaporator noise Evaporator pipe contact No damping evaporator Sound from refrigerant Stainless steel pipe shape in accumulator Sound from fin evaporator and pipe during expansion and contraction 3 Bowls a
20. Moisture penetration Cord heater Pipe damaged Moisture penetration E Connect conduction and non conduction parts and check with tester Conduction NG Resistance OK 61 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 10 Structure 1 Door foam appearance r Sag Hinge loose Bolt is loosened during and others Transportation Not tightly fastened Screw worn out r Weak gasket Adhesion surface adhesion Fixedtape Poorly applied Noise during Hinge interference Bigger door foam operation Hinge Pin tilted Poor flatness No washer No grease or not enough quantity Malfunction Not closed Interference between door liner and inner liner Refrigerator Stopper worn out compartment is r Bad freezer compartment door opened when freezer assembly compartment is No stopper Closed faulty stopper 2 Odor m Temperature of High Faulty damper control refrigerator Button is set at weak compartment Door is open interference by food Deodorizer No deodorizer Poor capacity Others Food Storage Seal condition Store special odorous food Long term storage Odors from chemical procucts 62 9 2 Faults 2 1 Prob
21. Replace switch if the resistance between terminals is not zero 1 Dispenser lamp is not on when bushing button is pressed 2 and water are not dispensed Operate switch button three and four times and confirm the lamp ice and water dispenser work It they do not work then remove switch and measure the resistance between terminals COM NO Replace switch if the resistance between terminals is zero 13 FUNCTIONS AND OPERATION PRINCIPLES OF MAIN PARTS 5 Motor 6 Solenoid 1 Freezer Cooling Motor Used mainly for 1 Structure of Solenoid Freezer Cooling motor Two types of solenoids are used for refrigerator depending on the applications such as solenoids for ice cube and ice Shaft dispenser The solenoid is composed of an armature N stator and a main body which supports stator and pulls the armature when electricity is applied Stator 2 Operation Principles When electricity is applied to the coil magnetic field forms around the coil The armature in the magnetic field moves toward the stator and ice dispenses When electricity is removed the armature moves back to its original position rated stroke distance by the spring force and stops Bi Detail of connector moving Front SHAFT Projective direction Stator Stator EMF Armature Armature lt Solenoid for ice cube gt lt Solenoid for dispenser gt 2 Gear Box Appli
22. 6 6 2 2 N C L7 v 2 Ste fe 1 31 3 DSR 058 8 8 Fwa JJ 4 RTS RTS 9 9 vec a z SIE N C N C 19119 5 5 i 6 6 T GND 7 7 J 3 3v B B 1 9 9 WH TMDS 52 re Ta ROU 3 3v 4 14 BK rar BK a Tat ig wa D o LCD INVERTER ea Du Nx alas ip Take a Ta BK 2 BK 2 2 TcLK fid ig BL 1 GND 3 3 3 3v Ed 20 BK BK BE GND 414 wi 2 2 BACKLIGHT_ON 5 5 KEOATR WIG N C 51 6 GND 7 7 KEYBOARD 1 414 i K vee yg BK 5 52 8 6 lt KBCLKR 5 5 50121 50 12V 9 9 w NC 6 6 ex IB ak 12V f Ojf or 883 500 0 CD SOUND HH u 55 OUT IN IN RD YL 675 Erbebeko IN BL RD Far TB REMOCON De Sic ouT1 EN GND Te GND 2 5v 2 24 REMSIG IN 3 SH J 1 es cum i nn een an ul SYMBOL COLOR SYMBOL COLOR BK BLACK WH WHITE BN BROWN PR PURPLE RD RED SB SKY BLUE BO ORANGE PK PINK BL BLUE G Y GREEN YELLOW GREY WIB WHITE BLACK GN GREEN RAW RED WHITE YL YELLOW B W BLUE WHITE 100 DIGITAL PARTS MANUAL 1 MAIN CONTROLLER 1
23. There is a magnet in the gasket bushing so that it is if door is securely closes without a gap Also check to see if the foods in the refrigerator or freezer compartments are holding the door open The doors do not close properly If the rear side of the refrigerator is raised higher than front side the doors shall not be easily closed Adjust the level of refrigerator with the levelling screws 91 HOW DISASSEMBLE AND 1 DOOR 3 Disconnect upper hinge from a hinge supporter by grasping the front part of upper hinge and lifting up 1 Remove lower cover and then disconnect water Hinge Assembly U in arrow direction and pull forward in arrow direction Be careful so the door does not fall down supply tube in the lower part of freezer door lt Pull the water supply tube forward while pressing 1 part to disconnect water supply tube as shown below V 2 Remove a freezer door 1 Loosen hinge cover screw of freezer door and remove cover Disconnect all connecting lines except grounding cord 4 Lift up the freezer door 1 in arrow direction and disconnect the door from the lower hinge 2 Don t pull a door forward 2 Turn hinge lever in arrow direction until it is loosened and take 1 out in arrow B direction Note Lift up a freezer door until a water supply tube is Hinge Lever fully removed b Assembly is the reverse order of disa
24. gt 494 bd su 054 T en un l aldi m ml Section A VIEW F 110 DIGITAL MANUAL 5 2 2 INPUT OUTPUT Structure BLACK 4 BK BK 2 BN BROWN 5 BK IBK 3 10 YL 12 RD RED 6 4 9 PRIRDHS9 BO BRIGHT ORANGE BL BLUE 7 BK BO 5 8 6CY WHI8 GY GREY 3 BOIBOI6 7 BK IBKn6 GN GREEN o Im YL YELLOW 98 RD 7 6 DIB 5 WH WHITE 20 RDIRD 8 5 BK BK 15 PR PURPLE N IR AIRDISBHA SB SKY BLUE 21 RD 24 2 vale PK PINK 22 10 3 j RD WH RED WHITE SER DAN 2 BL WH BLUE WHITE 24 WHISB 2 i 11 GN YL GREEN YELLOW VIEW A VIEW B 1 Section D Input voltage SPEC 2 VIEW B Output Voltage SPEC VOLTAGE OUTPUT VOLTAGE RANGE REMARK Output 3 0 3 6 ORANGE Output 3 0 3 6 ORANGE BLACK Output 4 85 5 15 RED BLACK Output 4 85 5 15 RED BLACK GRAY POWER GOOD Output 4 85 5 15 PURPLE STANDBY Output 10 8 13 2 YELLOW Output 3 0 3 6 ORANGE INPUT VOLTAGE RANGE REMARK NEUTRAL _ LIVE GND MAK
25. plastic bowl or bag Certain odors are common in new refrigerator Persuade customers not to use plastic bag or wraps with wet food or odorous foods Problems Causes Checks Measures Remarks Food Odor Food garlic kimchi etc Check to see if food is not Dry deodorizer in the bright well wrapped ventilated place See if the shelves or inner wall Store the food in the closed are stained with food juice container instead of vinyl wraps Check the food in the adhesive Clean the refrigerator and set the wraps cooling to strong Check food for spoilage Plastic Odor Odors of mixed food and plastic See if wet food is wrapped with Clean the refrigerator Odor from the deodorizer Odor from the old deodorizer Check the deodorizer odors Dry the deodorizer with dryer and then in a birght and well ventilated place Remove and replace the deodorants SISONSVIG WA18d Odd G 2 9 Micom transformer winding is cut PCB transformer temperature fuse is burnt out trans input and output terminals with a tester If resistance is infinity trans winding 1 cut transformer or PCB Problems Symptom Causes Checks Measures Remarks Bad PCB All display Bad connection Bad connector Visual check on connector Reattach electric power LCDS are off between Main PCB connection from main connection connector and display circuit PCB to display PCB
26. 330 92 1705 024 L2 47K 620 4 FR 1 29 54 53 ae C FAN PWM Q3 TE a R37 KTC3198 25 10K ips 4 o R41 R40 50 47K LOCK 202 1447358 2 RAS 5 Q4 330 022 KTA1705 FR102 A L R42 150uH 47K Pus mm R43 P63 52 3 9K 1 2 GE PWM 05 A Da 22DuF CC19 R44 KTO3198 25V 225 10K 45 77 R47 iw P50 49 2K 47K F AN LOCK 5 201 L 0020 1N4735 TT 102 6 2V 7 EXPLANATION MICOM CIRCUIT 1 9 Temperature compensation and temperature compensation circuit 1 Temperature compensation at freezing chamber cold storage chamber Me d MICOM 5 a Temperature compensation at Cold storage chamber 55 60 RORI Temperature compensation at Freezing chamber 7 n AA ANI LS 10 _ 77 Freezing chamber Cold storage chamber Resistance value Temperature Resistance value Temperature Remarks RCF1 compensation RCR1 compensation 180 5 C 9 F 180 2 5 C 4 5 Warmer 56 4 C 7 2 F 56 2 0 3 6 F compensation 33 3 5 4 F 33 1 5 2 7 F 18 2 3 6 18 1 0 1 8 F 12 1 1 8 F 12 0 5 C 0 9 F 10 kQ 0 0 F 10 0 09 Reference temperature 8 2 1 C 1 8 F 8 2 0 5 C 0 9 F 5
27. Bushing inject Water Tank Nut Tube Connect Assembly 9 1 How to disassemble the water supply pipe 1 1 Disconnect five fixtures mounted on the rear wall of the refrigerator after disconnecting the water supply pipe from a water valve 2 Remove the tie wrap and two screws connected to the bushing inject 3 Replace the water supply pipe after disconnecting the water supply pipe from a rubber inject And assemble the parts by performing disassembly in reverse order 9 2 How to disassemble the water tank and the water supply pipe 1 Disconnect the water supply pipe from a water valve on the back and lower part of the freezer 2 Disconnect the connector Assembly in water supply pipe at lower part of the freezer door 3 Pull out the water supply pipe from the thermal insulation materials after removing one screw and six tie wraps in the lower part of a refrigerator compartment 4 Replace a water tank or a water supply pipe and assemble the parts by performing disassembly in reverse order Note The water supply pipe cannot be disassembled Tightly fasten six tie wraps to prevent leakage 97 DIGITAL SECTION LAYOUT 5 80883 33H WOOIW 434 LAdNI OV NOILOALOWd AlddNS H3MOd ysiaquvu Wvd9Oud d3MOd 4 JAYS WYYDOHd H3TIOHINOO 1304 H3183ANOO OG OV aNnos MW3d MS MS LNdLN
28. Neleak sounds when from make noise when removing bushing cap blow removing bushing moisture dry air or N2 gas for more than 1 min before cap penetration using the parts Sound usable No sound not usable 4 Refrigeration Evacuation Min More than 40 minutes To remove Cycle time moisture Vacuum Torr Below 0 03 ref Note Only applicable to models equipped with degree reverse flow protect plate Vacuum EA High and low Pressure Vaccum efficiency can be improved by sides are evacuated at operating compressor during evacuation the same time for models above 2009 Vacuum EA Use 134 exclusive To protect The bushing pipes for R12 refrigerant will melt piping manifold mixing of when they are used for R134a refrigerant mineral and causes of leak ester oils Pipe Use R134a exclusive To protect R12 coupler Refrigerant mixing Outlet Socket EA R134a exclusive Plug R134a exclusive 5 Refrigerant EA Use R134a Do not mix Do not weigh the refrigerant in too hot or too weighing exclusively with R12 cold an area 25 C 77 F is adequate Weighing allowance refrigerant Use copper charging canister 5g Socket 2SV Plug 2PV R134a Note Winter 5g Note Do not burn O ring bushing during Summer 5g welding 6 Drier replacement Use R134a exclusively To remove for R134a refrigerator the Use R12 exclusively for moisture R12 refrigerator from pipe Replace drier whenever repairing refrigerator cycle
29. i 2 104 1 CC30 104 ihi 17 19 24 25 27 2B 33735 The Icemaker circuit above applies to the GR D267 and consists of the Icemaker unit part installed in the freezing section and the Icemaker drive part of the main PWB Water supply to the Icemaker container is accomplished by opening the valve via a solenoid relay for a duration set by the DIP switches When water supply time elapsed water supply automatically stops This circuit exists for implementing functions such as ice removal ice full detection horizontal balancing and sense of ice making temperature sensing for the Icemaker container Ice making temperature sensing is same as in the temperature sense circuit part of the main PWB refer to it Test switch input detection of the Icemaker is same as in the door switch input detection circuit of the main PWB 1 This function is used in operation test service execution and cleaning etc And is performed if pressing the test switch installed at the automatic Icemaker itself for more than 0 5 seconds 2 The test switch operates when the ice maker is in the horizontal position Test function is not available during the water supply operation Ice removal control and water supply controls are not performed if ice full is detected during the operation of test function 3 If pressing the test switch for 0 5 second or more in the horizontal status ice removal operation is immediately performed regardless of the generation co
30. 1 Disconnect button assembly by pulling down until it thetunnel Assembly to diseonnect stops and then pull it forward Funnel Assembly Button 5 Duct cap Assembly is disconnected if hold lever connecting screw is loosened with a phillips screwdriver 2 Remove display frame Assembly by making a gap between a display frame Assembly and funnel Assembly with a blade screwdriver and pulling it forward The cover dispenser is fixed with a hook Assembly Duct 6 For assembling a duct cap Assembly insert one end of a spring into the right hole of dispenser lever and insert the other end into the right hole in upper part of dispenser And then assemble a holder lever after fixing the holder at the solenoid Assembly working part 3 Display Assembly can be disconnected by pressing the upper part of a cover dispenser and pushing a display Assembly after disconnecting display frame Assembly housing Sheet Heater Dispenser Lever 96 HOW DISASSEMBLE AND 9 WATER TANK AND WATER LINE gt The water tank at back and lower part of refrigerator is attached by one screw and has a capacity containing of 7 glasses 180cc per glass of cold water It will take time to make more cold water in the tank The first portion of dispensed water is not cold even though the refrigerator is working In this case dispense ice first in the cup and then water to make a water cold
31. 14 it abate iet ei cbe eh die i Da eters a eee 15 sh 17 ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR 18 MICOM FUNCTION m 24 EXPLANATION FOR CIRCUIT uusuuusuesnnennnnnnunnnannuanzunnnannunnnannunnnnnnnnnnnnnnnnnunnunnsnnnunnnunnnnnnnnnnunnnannunnnannunnnnnnnnnnnnnnnnn 32 Le iol pee 52 hh gdU 53 PROBLEM SHOOTING 53 FAULTS iere Sede an Mb nee 63 COOLING CYCLE HEAVY REPAIR is ie ru ERE ek Een 80 HOW _TO DEAL WITE GEAIMS tet E eus 87 HOW TO DISASSEMBLE AND ASSEMBLE REFRIGERATOR 92 erm 92 TEL 93 DEODORIZER IRE 93 SHROUD GRILLE FANY eis Sats ie seg ngan aa Reges mae IER 94 CONTROLBOX B sa teet imp nite ond Lc ce tele su Un aa aa Led 94 GASE PMWB eoe plebs pe pi eie e SUR UU e t ede x 94 ICEMAKER ASSEMBLY 3 5 1 te A ER e b uite tee e bee ce dea eb 95 DISPENSER eb mu IE 96 t tectae eet dnt rete et trt ee e eds 97 DIGITAL SECTION
32. 2 Ambient temperature is displayed up to 9 C 16 F 49 C 120 F and displayed as Lo for less than 10 C 14 F and as HI for more than 50 C 122 F If the ambient temperature sensor fails Er is displayed 3 Since display temperature of ambient temperature is temperature sensed by the ambient sensor in the hinge U of the freezing compartment it may differ from the ambient temperature display of other household electrical appliances 2 4 Lock function display button lock 1 When power is first applied only the Release text is turned on in the lock release status indicator at the right side of the LCD display 2 If desiring to lock the display status press the lock release button once Release text is turns off at the right side of lock graphic of LCD and Lock text is turned on indicating locked status 3 The only buzzer sound rings and function is not performed even if pressing display button other than lock release key when in the lock status 4 1 desiring to release the lock status press the lock release button once Lock text turns off at the right side of lock graphic of LCD and Release text turns on in dicating locked release status 2 5 Filter status display function 1 Remaining filter replacement period is displayed as in the below figure Each line in dicates the number of months before the next filter replacement 2 The graphic text indicator appears if in the LCD if 6 months of filter use have passed 3
33. 7 LAN Ethernet 1 Maker Type RTL8139C 2 Maker Realtek 3 10Mb s and 100Mb s operation 4 Wake On LAN function Remote wake up Support 5 Half Full duplex capability 6 Integrated Fast Ethernet MAC Physical chip transceiver in one chip 22 5 nn 8 Labeling 1 Attach MAC ADDRESS SERIAL NUMBER PART NUMBER labels to Section A Labeling location Attach to Section A 2 Attach ROM BIOS Version label to Section B Labeling location Attach to Section B MAC ADDRESS MAC ADDRESS SERIAL NUMBER Part Number 6871JB1173 Product Date Record LG Model Name LG DDR2 Record ROM Version e VE 103 DIGITAL PARTS MANUAL 2 SUB CONTROLLER 2 1 Function Sub Controller is composed of MICOM PART and AMP PART and MICOM PART senses refrigerator error and passes signals from remote control transmits to main controller AMP PART carries out the function of amplifying the small signal being input through the Sound Output of the MAIN CONTROLLER MICOM driving power remote control signal receiver vcecwo H Hm rj m 3 test 4 Remocon SIG IN 5 gro
34. 92 JORN2401E472 2 4KF 1 8W 000400409 RECTFER DIODE 144004 AC sU 4 a 41 00400409 RECTFER 14004 D6 7 8 9 1 93 91016472 Bre 1 1 42 008360000 D3sBA60 _ 801 ale DIO1L121415 1 1821 43 0004480988 SWIONG DODE 154148 fors 2 CHANGI VALVE 1 H BAR HTR 2 2 44 0DZMROOOISA ZENER DIODE1N4735 6 2V DELTA 201 2 46 EXPLANATION FOR MICOM CIRCUIT QTY QTY NO DWG NO DESCRIPTION SPEC MAKER REMARK 2 2 94 OTRKE90004A KTA1705 Q2 4 2 2195 01R319809CA TRANSISTOR 3198 K E C Q3 5 96 orriosoogar KRC106M Q1 6210JB8001A 1 1197 BFS3510AO SAM FB ila 6600J88001A SKHV10910 Tact 98 TEST S W swi 6600 3P DIP OTAX 1 1 99 WATER SUPPLY sw2 EA 0 6X7 5mm J27 26 26 43607015JUMP WRE 0 6X10mm 01 26 6 6 0 6X12 5mm 428 33 UF1 JF2 FUSEN 43607015JUMP WIRE 0 6X10mm 100 EF JCR1 un 43607015UMP WRE 0 6X10mm une JCR3 UE EE JCR4 1 43607015 JUMP WIRE 0 6X10mm 43607015 JUMP WRE 0 6X10mm JH1 H B HTR 5200880018 O tuF 120 250VAC P1 1 1 1101 RC FILTER egi 1 1 102 920185074 SUNG 103 104 6200330048 CV970020 TNC 1 1 2 7 105 common COL 6200 88
35. Analog Composite 2 Operating Environment Operating temperature 118 DIGITAL PARTS MANUAL 11 REMOTE CONTROL RECEIVER 11 1 Function This device receives weak signal from the remote control transfers then to a spherical wave and transmits to the remote control processing section in the sub controller 11 2 Outline Diagram and INPUT OUTPUT Structure Q REMOCON SIG 3 SIGNAL 5 2 5 GND GND s E AMP1 60 0 12 MICROPHONE 12 1 Function Receives external sound signal converts it to electronic signal and transmits the signal to the MIC input section of the main controller CON MIC CMT 66 WHITE SHIELD Shrinkage Tubes 1 5 1 7 M M Shrinkage Tubes 3 5 1 7 222 SHIELD WHITE 12 2 Outline Diagram and INPUT OUTPUT Structure 119 DIGITAL MANUAL 13 SPEAKER 13 1 Function This device transfers and outputs the electronic signal amplified by the AMP in the sub controller into audible sounds 13 2 Outline Diagram and INPUT OUTPUT Structure 32 41 5 1 5 4 04 4 HOLE 22 91 5 4 0 5
36. Defective PCB PCB transformer Check resistance of PCB Replace PCB Applicable to model without dispenser DefectivePCB electric Defective regulator IC Check voltage at input output Replace regulator Refer to electric circuit parts 7812 7805 terminals circuit in circuit explanation PCB electric terminal Check fuse in PCB electric Replace PCB fuse fuse is burnt out terminal with a tester STR Parts are Check if STR No 2 and 3 pins Replace parts Applicable to damaged are cut when power is off model with dispenser Abnormal Bad connection Lead Wire connecting Check Lead Wire terminals Reconnect Lead display LCD between Main PCB main PCB and display connecting Main PCB and Wire and directly operation and display circuit PCB is cut or connector display PCB with a tester connect defective terminal connection is contact terminal to bad Lead Wire Defective LCD Defective LCD Check if all LCDs are on when Replace display Refer to display module Main PCB Test switch is PCB circuit in circuit pressed or when both freezer key and power freezer key are pressed at the same time for more than one second explanation SISONSVIG NI 18O0ud 0 Problems Symptom Causes Checks Measures Remarks Bad cooling Freezer temperature is high Compressor does not start Compressor Lead Wire is cut Check compressor Lead Wire with a test
37. F 60 140 F 21122 DIGITAL MANUAL 7 LCD INVERTER 7 1 Function This device supplies the driving power for backlight inside the LCD 7 2 Outline Diagram and INPUT OUTPUT Structure 7 2 1 Outline Diagram LABEL INSULATOR YEON 20015WR 02A CAUTION HIGH VOLTAGE M INSULATOR YEON 20015WR 02A 7 2 2 INPUT OUTPUT Structure CONNECTOR PINNO INPUT OUTPUT INPUT YEON HO 12505WR 10 lt Inverter PCB gt SYMBOL DESCRIPTION CTRL Dim Adjust NC GND GND GND GND GND GND INPUT ON OFF Power System Return 5V ON NC GND GND GND GND GND GND 1 2 3 4 5 6 4 8 9 INPUT Vin DC 12V H1V INPUT A Vin DC 12V 1V OUTPUT Lamp H1 High Voltage connection to high side of lamp OUTPUT Lamp L1 Low Voltage connection to low side of lamp 113 DIGITAL PARTS MANUAL 7 3 Specifications of parts 1 Maker LG Electronics 2 Inverter Type NMC1507 02 3 Maker Type 6632Z 1507B 4 Inverter SPEC Input Supply Voltage DC 11 13V Input Current 1 1A Input Power 13 2W Output Voltage 616Vrms Output Current 9 0mArms Outp
38. of adjusting screw and rotate driver in arrow direction clockwise until the and rotate driver in arrow direction clockwise until the refrigerator becomes horizontal refrigerator becomes horizontal HOW TO INSTALL REFRIGERATOR 2 How to Install Water Pipe Install Water Filter Applicable to some models only Before Installing water filter 1 Before installing the filter take out the top shelf of the refrigerator after tilting it to the direction 1 and lifting it to the direction and move it to the lower part 2 Remove the lamp cover by pressing the protrusion Aligning with the guide line under the cover and pulling the cover to the front and the fastening indication line Control box Control box Aligning with the guide line and the loosening indication line W After installing water filter Reassemble the lamp cover and the top shelf of the refrigerator To place the top shelf of the refrigerator raise the front part of the shelf a bit so that the hook of the shelf fits into the groove In order to clean the water filter system drain water for about 3 min Installing water filter 1 Initial installation of water filter Remove the filter substitute cap by turning it counterclockwise by 90 degrees and pulling it down Note Then open the door of the refrigerator and check for Note Keep it for later use when you do not use the filter water dripping Remove t
39. 120 e 38 0RDe001E672 RESISTUR FIXED CARBON FILM OHM 1 8 5 2012 ROHM R101 102 10 39 0RD4701E672 RESISTUR FIXED CARBON FILM 4 7K OHM 1 8 W 5 2012 ROHM R103 112 1 40 0RDISO02E672 RESISTUR FIXED CARBON FILM ISK OHM 1 8 W 5 2012 ROHM R117 1 41 0RD1004E672 RESISTOR FIXED CARBON FILM OHM 1 8 W 5 2012 ROHM R121 42 0RD4702E672 RESISTUR FIXED CARBON FILM 47 OHM 1 8 W 5 2012 ROHM 1 43 0RD1201E472 RESISTOR FIXED CARBON FILM L2K OHM 1 8 W 1 2012 ROHM R123 1 44 0RD1000E472 RESISTOR FIXED CARBON FILM 10K OHM 1 8 W 1 2012 R TP ROHM R122 1 45 0DZRMO0188A DIDDE ZENERS RLZ LLDS LL 34 500MW 5 6 __ 70101 46 JUMPER 0 DHM OP1 lt LINEAR 47 JUMPER 0 OHM DP2CAMERICA 48 0DLLE0038AA LED LT8B32 UR I91T AMBER 35MCD LEDTECH LD101 195 1 49 6908JB8003A BUZZER BM 20B PIEZD 4 7 8508 BUJEON BUZZER 6 50 66008 7002 SWITCH TACT JTP1138A DC SOMA SMD JEIL SW101 106 95 51 0011 0048 LED LT8B22J 190T R TP GN YLIOMCD LEDTECH LD101 195 52 48 EXPLANATION MICOM CIRCUIT 3 4 DISPLAY circuit diagram CON101 T 40 Vdd 76 1 A 1 i 39 Voref
40. 135C 3 C 25 2 C 115 C 1 05 No 0 5 56 8 1 F 7 2 F 6 3 F 5 4 F 4 5 F 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F Down Down Down Down Down Down Down Down Down change Up 5 45 4 35 C 3 C 25 C 2 C 150 1 C 05 C No 180 9 F 8 1 F 7 2 F 6 3 F 5 4 F 4 5 F 3 6 F 2 7 F 1 8 F 0 9 F Down Down Down Down Down Down Down Down Down Down change b Temperature compensation at the freezing chamber is also performed in the same manner as cold storage chamber Temperature compensation value is twice that of the cold storage chamber gt This circuit determines the necessary level of temperature compensation for the MICOM to control temperature of each chamber 41 EXPLANATION FOR CIRCUIT 2 Compensation circuit for weak cold over cold in freezing chamber RI6 lt U OK JCR1 R18 MICOM 10K 1 p70 ao R19 OK R20 JCR3 OK Hr R21 Thermal compensation by Jumper CUT OK p JERA y p JCR1 1 1 8 F aa JCR2 1 1 8 F ee JCR3 1 1 8 F JCR4 1 C 1 8 F ee Compensation Compensation for weak cold for over cold bs e edad value Remarks JCR3 JCR4 JCR1 JCR2 66 56 6 0 32 F
41. 144 e 8999 O e e 4018 i es gl 47104 _ 7109 GR DZ32GRO VERIO TOR T KOREA NTSC ff 6957300 T N 145 si P No 3828JD8454C OCT 2002 Printed in Korea
42. 4 4 6 Mon 9 o D 9 Hd B loch 2 en 55 71 t F LAMP AB HEATER 8 E Mecum E 7 m ER 28 FUSE MELTING won 3 cms UJI I e An E L CON3 Mor a M 9 5 7 AUGER MOTOR m we rm be Ez 7 EC pio 275 7 Bim fo m E KS kras RYG mug 2 A SOLENOID 1 i J me n le __7 ps WATER VALVEI WATER I s ANG j B len 7 77 Soc Jd fen 7 i 1 D uc log 2 foo EA RSI ET S sacs FM DAMPER MOTOR 14 98 T 3 2 A CONT BOX R DAMPER HEATER 4 mis 15 2 10 poy H BAR s w R DOOR AAN AAN R LAMP ps TS 9 13 lt lt 4 12 HEATER PLATE DISP 9 o IE 4 8 me oc 141 pos por Aba SOLENOID 7 La E DISPENSER f Em 5 09 H BAR HEATER S m CORPS NES n od E EAE Ed DIsP LaMP H sea E 5 e 1 p 5 asc E s esc sent ne 096 e oc e we ast rc zem one ce wou ese MRE CUT CUTA gie curi 5 cur 1 BMBKJUMP WIRE op DOMESTIC 3 NON DOMESTIC DISPENSER LESS UP w DISPENSER PWB ASSEMBLY MAIN 50
43. 6 Inadequate amount of refrigerant 7 Weak compressor discharging power Different rating Small capacity 8 Fan does not work 9 Button is positioned at strong 1 Ice in freeezer compartment External air inflow Bushing motor assembly direction reverse Door opens Weak door closing power butnotcloses Stopper malfunction Door sag Food hinders door closing Gap around gasket Contraction distortion loose door twisted corner not fully inserted Food vapor Storing hot food Unsealed food 2 Condensation in the refrigerator compartment r Door opens Insufficient closing but doesnt close Door sag Food hinders door closing Gasket gap 3 Condensation on liner foam Cool air leak Not fully filled Toop table part and transmitted Out plate R L part Flange gap Not sealed Gasket gap CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 4 Warm 1 Clogged cooling path refrigerator P U liquid leak compartment Foreign materials P U dump liquid temperature Inspect parts measurements and check visually 58 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 6 Condensation and ice formation 7 Sounds 4 Dew on door Dew on the duct door Duct door heater is cut Dew on the dispense Recess Heater is cut re
44. 7 CC106 2141 LD169 LD172 104 297 p32 27 NETS SW103 F 2 a R142 LD173 LD176 SW104 R i 4 28 R143 00 9 P33 1 29 Ll eswios Fc R144 e p P34 as LDIBS LDI88 L eswios topx i 9 AINO E mae LD189 LDi92 rh LoT RR 11193 11195 EE 9 a Ves 8 qi ia LL 52 32 2 7 7 2 SK lt 5 08 bead T7 104 P53 33 0SC101 AIN3 T CSTS 4 00MGW o T 3 xin 2 ng 787980 5 6 8 11 16 19 21 35 37 41 46 Parts without mark means SMD ports 4 9 EXPLANATION MICOM CIRCUIT 4 PWB circuit diagram PWB circuit diagram may vary a little bit depending on actual condition 2 3l sm Varot wa Lo vn Voss uc TEST POWER M 3 14 3
45. Bad connection between adapter and outlet faulty adapter r The Inner diameter of adapter The distance between holes The distance between terminals The thickness of terminal rBad connection between plug and adapter faulty plug The distance between pins Pin outer diameter 3 Shorted start circuit Short inserted cord length Worn out tool blade disconnected Bag internal connection Faulty terminal caulking Cu wire is cut Bad soldering No electric power on compressor Faulty compressor Faulty PTC Power does not conduct Damage Bad characteristics Initial resistance is high Bad connection with loose compressor Assembly is not possible Bad terminal connection 4 During defrost automatic defrost Cycle was set at defrost when the refrigerator was produced m No power on Disconnected copper wire Power cord is disconnected power cord Faulty soldering Internal electrical short Faulty terminal contact Loose contact Large distance between male terminal Thin female terminal Terminal disconnected Bad sleeve assembly L Disconnected Weak connection m No electric Thermostat is off Gas leaks completely Sensor breakage power on Sealed part leak eat Bellows leak Faulty terminal connection OLP is off Capacity of OLP is small Characteristics of OLP are out of spec Bad connection Power
46. Cooling air leak Door sag Bad gasket adhestion Bad attachment Contraction r Bad adhesion Weak binding force at hinge 4 No cooling air circulation r Faulty fan motor motor Self locked Wire is cut Bad terminal contact Door switch Faults Contact distance Button pressure Melted contact Contact r Refrigerator and freezer switch reversed Button is not pressed Poor door attachment Door liner dimension Contraction inner liner Misalignment Bad terminal connection P U liquid leak E Check the fan motor conduction OK No conduction NG 56 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 3 Refrigeration is weak 4 No cooling air circulation Faulty fan motor Fan is constrained Small cooling air Insufficient discharge motor RPM Shorud Ice and Fan shroud contact Clearance Damping evaporator contact Accumulated residual frost overload Fan misuse Rated power misuse Low voltage Faulty fan Fan misuse Bad shape Loose connection Not tightly connected nsert depth Bent ign materials on rotating parts 5 Compressor capacity Rating misuse r Small capacity Low valtage
47. F U Disconnect housing of after removing two rail guides with a balde screwdriver 7 Disassembly of shroud F U Hold upper part and pull forward 8 Check foam PU sticking conditions around the shroud F U and F L during assembling If damaged torn or poorly attached assemble with a new one after sealing well Grille Fan U Cap Screw o Grille Fan L Shroud F L 93 HOW DISASSEMBLE AND 5 CONTROL BOX 1 Disconnection of Cover Lamp R U Loosen one screw in the center with a phillips screwdriver after pushing two rail guides on the lower part of a control box R with a blade screwdriver and pull the cover lamp R U forward 2 Loosen four screws in A after taking out the lamp Hold a lower part of control box and take out a control box by pulling forward and disconnect housing from the main body Cover Lamp R U 6 CASE PWB 1 Loosen ten screws and remove cover PWB pulling up in arrow direction 2 When disassembling the whole case PWB disassemble all housings first and push the case PWB in arrow direction to disassemble from the main body 3 When disassembling Main PWB Assembly and Sub PWB Assembly from a case PWB open each hook and disconnect 94 HOW DISASSEMBLE AND ASSEMBLE 7 ICEMAKER ASSEMBLY 7 1 Dispenser Model 1 How to disassemble 1 R
48. Icemaker cube mould is horizontal 5 Ice ejection conducts for 1 cycle whether ice or not ice is in the ice bin when power is initially applied 2 2 Water Supply Control Function 1 This function supplies water into the Icemaker cube mould by operating the water valve when ice ejection control is completed and Icemaker mould is level 2 The quantity of water supplied is determined by DIP switches and water pressure Water Supply Quantity Table gt No DIE SWITCH SETTING WATER SUPPLY TIME REMARKS SWITCH 1 SWITCH2 SWITCH3 1 OFF OFF OFF 6 5 Sec 2 ON OFF OFF 5 5 Sec The quantity of water supplied depends on DIP switch setting 3 OFF ON OFF 6 Sec conditions and water pressure as it is 4 ON ON OFF 7 Sec a direct tap water connection type the water supplied is generally 80 cc 5 OFF OFF ON 7 5 Sec to 120 cc 6 ON OFF ON 8 Sec DIP switches are on the main PWB 7 OFF ON ON 9 Sec 8 ON ON ON 10 Sec 3 The refrigerator actively detects the DIP switch seting so that interrupting power is not necessary to change the supply preset If the DIP switches are changed while water is being supplied the changes will take effect until the supply cycle is complets 4 When water supply signal is applied to water and ice valves at the same time during water supply water is supplied to water valve If water supply signal is applied to ice valve during water supply water is supplied to
49. In shipment from factory CUT bob 535 5 1 C 1 8 F CUT 56 5 1 C 1 8 F CUT 27 1 C 1 8 F 5 66 63 CUT 1 C 1 8 F CUT CUT 5 2 C 3 6 F 6 o 6 CUT CUT 2 C 3 6 F CUT ar CUT 0 C 0 F CUT id 535 CUT 0 0 F 5 CUT CUT 0 0 F ms CUT 0 C 0 F CUT CUT CUT 6 1 18 F 5 CUT CUT CUT 1 lt 1 8 F CUT CUT CUT CUT 0 0 F b The above option circuit allows compensation for temperature in the cold storage chamber by simply by cutting service jumpers EXPLANATION FOR MICOM CIRCUIT 1 10 Communication circuit and connection L Wire between main PCB and display PCB The following circuit is a communication circuit used for exchanging the necessary information between main MICOM of main PCB and LCD dedicated MICOM for LCD control of display PCB Transmission receipt L Wire is necessary display PCB for driving the display is required Poor communication occurs if a continuous information exchange fail to continue for more than 30 seconds between main MICOM of main PCB and LCD dedicated MICOM for LCD control of display PCB Main PCB Main MICOM L Wire FD H 4 wires DC 12V GND Transmission error status 5 4 Reception notch status LCD dedicated MICOM 2 50 TER SHEET CT DOOR IC1 MICOM RZ7 44 Reception
50. Memory Extend Total 512MB Expansion possible up to 512 MB 6 O S Windows 98SE 2 Video Audio Output PCI to ISA Bridge 1 Maker Type CS5530A UCE 2 Maker National Semiconductor 3 Build in Xpress Graphic Audio 4 Resolution 1280 X 1024 85MHz 5 Audio AC97 Codec Interface 6 2 USB Interface 3 External A V Input Output handling A V Input Output MUX Maker Type Fusion 878A Maker Conexant NTSC PAL SECAM Video Support Resolution 768 X 576 Full PAL Resolution 3 Composite Input support 3 1 MUX TV FM MIC 1 2 3 4 5 6 Zoo nn 4 Graphic Accelerator 1 Maker Type ATIM6 M 216M6TGDFA22E 2 Maker ATI Technologies 3 Embedded Memory 8MB 4 Color 32 bit colors 5 Highly optimized 128 bit engine 5 Sound Input Output handling Sound Input Output 4 2 1 Maker AD1819B 3 Analog Devices S N Ration 90dB 4 16 Bit Full Duplex Codec 5 6 Ze nn 6 External Input Output handling SUPER Input Output 1 Maker Type PC97317 2 Maker National Semiconductor 6 LVDS and PaneLink Support with TMDS Transmitter Analog Input LINE CD VIDEO AUX 2 MONO MIC 7kHz 48kHz Sampling Rate with 1Hz Resolution 3 Plug and play Compatibility PnP 4 24 GPIO bit ports 5 KBC two 5 IR support IEEE1284 parallel port 6 RTC Real Time Clock Control
51. RPM during operation of super freezing 26 MICOM FUNCTION 2 11 Control of variable speed freezing room fan 1 To increase cooling speed and load response speed the MICOM sets freezing room fan motor at the high speed of RPM or the standard RPM 2 Only at the application of initial power or special freezing operation or load response operation does the direct speed of RPM The MICOM directs the standard RPM in other general operations 3 If opening doors of freezing cold storage chamber or home bar while fan motor in the freezing chamber operates the freezing chamber fan motor operates normally If operating in the high speed of RPM it switches to the standard RPM However if opening doors of freezing chamber or home bar the freezing room fan motor stops 4 As for monitoring of BLDC fan motor error in the freezing chamber MICOM immediately stops the fan motor when sensing that the BLDC fan motor is locked or pooly operating if there would be position signal for more than 65 seconds at the BLDC motor In such cases the MICOM in dicutes a failure refer to failure diagnosis function table on the LCD display and attempts arestant of the cycle in 30 minutes If normal operation is detected failure status is released and refrigerator resets to the initial status reset 2 12 Control of cooling chamber fan motor 1 The cooling chamber fan motor performs ON OFF control by linking with the CO
52. cannot be recorded Check the sound recorded function Check the microphone connection Is the connection No Check monitor joint of the microphone connector gt connector and in the monitor section reconnect normal Is the connection No Check Main Cont of the Main Gont MIC IN gt MIC IN connector connector normal and reconnect Replace Camera video is not displayed Check the camera N operation function Check the connection ofthe camera connector Is the input voltage No Check connection of ofthe camera connector gt Main Cont and Touch INV normal refer to 1 0 and reconnect structure Is the connection 0 No Check the Main Cont the Main Cont and Does the camera in the monitor section operate normally and CCD IN connector and reconnect If it does not operate normally even after replacing the camera replacethe Main Cont END 126 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms Contents to check Measures Remote Control does not work Check the operation function of remote control Y Check the operation of MICOM Sub Cont which processes the remote control input Y 1 Direct the remote control to the receiver monitor 2 Push the main button once
53. change Up Up Up Up Up Up Up Up 15 C 1 C 0 5 No 0 5 1 C 15012 1256 3 C 35 5 6 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F 5 4 F 6 3 F Down Down Down change Up Up Up Up Up Up Up 2 C 1 157 1 C 0 5 No 0 5 C 120 1 5 2 25 3 8 2 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F 5 4 F Down Down Down Drop change Up Up Up Up Up Up Cold storage 25 C 2 C 15 C 1 05 No 05 C 1 C 115 C 2 C 2 5 chamber 10 kQ 4 5 F 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F RCR1 Down Down Down Down Down change Up Up Up Up Up 32 25 290 1 5 C 1 0 5 No 0 5 1 C 157 2 12kQ 5 4 F 4 5 F 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F Down Down Down Down Down Down change Up Up Up Up 35 3 C 25 2 C 1 5 1 C 0 5 05 C 1 1 5 C 18 kQ 6 3 F 5 4 F 4 5 F 8 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F Down Down Down Down Down Down Down change Up Up Up 4 C 3 5 3C 25 2 C 1 5 1 105 No 0 5 C 1 C 33 7 2 F 6 3 F 5 4 F 4 5 F 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F Down Down Down Down Down Down Down Down change Up Up 45 C 4 C
54. circuiting of a coil due to overheating of solenoid Dispenser Lamp On Off function Lamp on the dispenser part is turned on when pressing the dispenser press switch after selecting ice cubed or crushed or water The lamp turns off after releasing the dispenser switch Selection function of crushed ice water cubed ice 1 This is function allows selection of crushed ice water cubed ice function depending on user s selection Display and selection is changed by pressing the dispenser selection button 2 At initial Power On crushed ice is automatically selected 3 In selecting crushed ice geared motor operates so that crushed ice can be supplied outside by pressing the dispenser switch when ice is formed in the ice storage container Ice Bin 4 In selecting crushed ice geared motor is operates so that cube ice can be supplied outside if pressing the dispenser switch when ice is present in the ice storage container Ice Bin Water dispenser function 1 LCD is displays water selection if user chooses water via the selection control 2 Water dispenser function is a type directly connected to a water pipe The water solenoid valve built in at the right side of the Cooling chamber opens to supply water when the dispenser switch is pressed 31 EXPLANATION FOR MICOM CIRCUIT 1 Explanation of PWB circuit 1 1 Power circuit Power circuit consists of SMPS SWITCHING MODE POWER SUPPLY power The SMPS consist of t
55. current circuit must be fully understood in order to understand the roles of starter The circuit is shown below P T C CS CR 12 FUNCTIONS AND OPERATION PRINCIPLES OF MAIN PARTS 4 Switch Door Dispenser 1 Function 1 Door switches in freezer and refrigerator compartments turns on and off the lamps when the freezer and refrigerator doors are opened and closed They also switch the fans in the freezer compartment on and off at the same time 2 Home bar switch turns on and off the lamp in the refrigerator compartment when home bar is open and close 3 Dispenser switch turns the dispenser lamp on and off when dispensing ice water 2 Operation Principles and Characteristics Classification Door Switch Dispenser Switch Shapes Circuits COM NO Operation The switch points make contact depending on The dispenser bushing button is pressed by the Principles wheather one of the doors is opened or closed switch lever This turns on the dispenser lamp Charact These control the lamps in the refrigerator and eristics the freezer compartments 3 Troubleshooting Troubles Parts Symptoms Check Measures Bad Contact Lamp is not on when door is open door switch Operate switch button three or four times and verify that the lamp is on and off See if lamp is burnt out If lamp is O K then remove switch and measure the resistance between terminals Door Switch 1 2 3 4
56. defrost is complete 2 Types of heater and their roles Classification Application Functions Resistance Remarks Heater Sheath AL Evaporator Upper Part Evaporator Defrost 240W Heater Sheath ML Evaporator Lower Part Evaporator Defrost 260W It melts and discharges the ice dropped Heater Plate Drain Lower Part from the evaporator through drain pipe 45W during defrost Heater Plate Chilled Room Duct Prevent icing from the chilled room duct 5W Heater Plate Damper Prevent icing from damper SW Heater Plate Dispenser Freezer_door Remove dew from dispenser 5W Heater Sheet Dispenser Freezer door Remove dew from duct door 1W Heater Cord Frame LCD Prevent icing from Home Bar 2 7W Heater Plate Tube Inject Prevent icing Tube Inject 3 5W 15 FUNCTIONS AND OPERATION PRINCIPLES OF MAIN PARTS 3 Faults Symptom Products faulty heater 1 Heater Sheath ML AL Problem Symptom Checks Measures 1 Heater Sheath heating wire is cut corroded or connecting wire is cut 2 Evaporator is not close enough to Heater Sheath AL 3 Poor terminal contact Poor Defrost The resistance is infinity when it is measured at both connector ends with a tester Visually check for a faulty defrost with eyes The resistance fluctuates very much when the resistance is measured at both ends with a tester 1 Replace parts Reconnect if wire is disco
57. freezer door is open during ice ejection and cube mould returning to horizontal condition ice ejection and cube mould level return proceed 3 When freezer door is open geared motor and cube ice solenoid immediately stop and duct door solenoid stops after 5 seconds 4 Water dispenser stops in order to prevent water spilling when freezer door is open 5 Test function operates normally regardless of refrigearator compartment door opening 21 ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 3 Icemaker Troubleshooting Troubleshooting it is possible to check the dispenser by pressing freezer and refrigerator temperature control buttons for more than 1 second is normal if all leds are on refer to trouble diagnposis function in MICOM section Is DC Power 5V and 12V output normal No Failed DC Power Change main PWB Check DC power 5V 12V Yes Is cube ice LCD off during troubleshooting check Yes i Failed icemaking sensor Replace Ice making Sensor Check the resistance of both ends 1 2 of icemaking sensor of 9 No Defects between icemaking sensor and board Pin No 60 of IC1 Yes Failed Icemaker Unit Replace Icemaker Unit Is the resistance of both ends 9 10 of ice ejection motor of CONS between 18 and 220 Replace Main PWB No s ice ejection motor drive circuit IC11 and peripheral circuits normal Is Crushed Ice L
58. ice is separated from the mould as ice checking lever raises 4 ejection motor stops for 1 second if Hall IC signal changes from OFF low to ON high after 3 6 seconds when ice ejection motor has rotated in normal direction If there is no change in Hall IC signals within 1 minute after ice ejection motor operates ice ejection motor stops as ice ejection motor or Hall IC is out of order 5 If ice ejection motor or Hall IC is abnormal ice ejection motor rotates in normal direction to perform its reinitialization It resets the Icemaker if the ice ejection motor or Hall IC is normal 6 The mould stops for 1 second at maximum tilted conditions The mould returns to a leveled position as ice ejection motor rotates in reverse direction 8 When the mould is level the cycle starts to repeat Water Supply gt Ice Making gt Ice Ejection gt Mould Returns to Horizontal N Maximum tilting point 4522 47 5 not full HALL IC ON OUTPUT SIGNALS OFF Bank is full HALL IC ON OUTPUT SIGNALS OFF ICE CHECKING AXIS cede oe 8 0 10 32 41 53 58 80 160 170 Lock Ice making Ice Checking Ice Ejection Lock Original point 2 1 sec Horizontal Level Retrun Conditions Conditions lt Timing Chart During Ice Ejection gt 20 ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 2 5 Test Function 1 This function forces operation during operation servicin
59. is Inner Ni Cr wire blows out Measuring instrument Multi tester E Check the voltage If the voltage is within 85 of the rated voltage it is OK W Check the terminal movement W Check both terminals of power cord Power conducts OK No power conducts NG W Check both thermostat terminals Power conducts OK If not NG W Check both terminals of OLP If power conducts OK If not NG W Check the resistance of both terminals At normal temperature 6 OK If disconnected 53 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 2 No cooling 2 Refrigeration system is clogged Moisture Residual moisture Air Blowing Not performed clogged in the evaporator Too short Impossible moisture confirmation Low air pressure Leave it in the air During rest time After work Caps are missed Residual moisture Not dried in the compressor Elapsed more than 6 months after drying r Caps are missing No pressure when it is open No electric Insufficient drier 05 drier Drier temperature poweron capacity Leave itin the air Check on package therm condition ostat L Good storage after finishing Residual moisture Caps are missed transportation During work Air blowing Not performed Performed Too short time Low air pressure L Less dry air Moisture penetra
60. is left open High temperature high moisture and high load Check food interfering with door closing Check ice on the ceilings Acquaint customers with how to use SISONDVIA WI1I04d 0 Problems Causes Checks Measures Remarks in the freezer compartment Surface of fan grille Wall of freezer compartment Cool air discharging port Basket rack area Food surface Icing in the shute 1 Bad cool air circulation Intake port is clogged in the freezer compartment Discharging port is clogged Too much food is stored Bad defrosting Check food storage conditions visually Check clogging at intake and discharge ports of cool air Check food occupation ratio in volume Less than 75 Check frost on the evaporator after dissembling shroud and fan grille Check for icing at intake port of refrigerator compartment Be acquainted with how to use Check defrost Check for ice on the evaporator and pipes after forced defrosting Check the parts related to defrosting if the problem is caused by the faulty defrosting 2 Bad freezer compartment door Faulty gasket Faulty assembly Check gasket attachment conditions Check door assembly conditions Correct the gasket attachement conditions and replace it Door assembly and replacement Replace gasket when it cannot be repaired 3
61. no children have access SPECIFICATIONS DEFROSTING SYSTEM Full Automatic ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS DIMENSIONS 960 W x915 D x1795 H mm FIRST DEFROST 5 6 Hours 377 8 361 4 702 in DEFROST CYCLE 13 15 Hours NET WEIGHT 169kg 3721 2 Ibs DEFROSTING DEVICE Heater Sheath AL COOLING SYSTEM Fan Cooling Heater Sheath ML TEMPERATURE CONTROL Micom Control Heater Drain ANTI SWEAT HEATER Heater Defrost Dispenser Duct Door Heater Dispenser Heater INSULATION Cyclo Pentane Frame LCD Heater COMPRESSOR PTC Starting Type ANTI FREEZING HEATER Chilled Room Duct Heater EVAPORATOR Fin Tube Type Damper Heater CONDENSER Wire Condenser Tube Inject Heater REFRIGERANT R134a 210g 67 s oz FREEZER LAMP 60W 1 EA LUBRICATING OIL FREOL 15G 330 cc REFRIGERATOR LOWER LAMP 60W 1 EA DRIER 100 83 REFRIGERATOR UPPER LAMP 30W 2 EA CAPILLARY TUBE MOLECULAR SIEVE XH 7 DISPENSER LAMP 15W 1 EA IS Sas oO N O o W NIN Tr 1795 7011 16 lt Front View gt 1072 201 4 960 3713 16 750 299 16 801 319 16 875 341 2 915 361 4 1407 557 16 lt View gt PARTS IDENTIFICATION Reset Switch Management Switeti Screen ON OFF Switch
62. piping 7 Leak check Do not use soapy Detect Check oil leak at refrigerant leak area water for check It refrigerant Use electronic leak detector if oil leak is not may be sucked into leak area found the pipe by The electronic leak detector is very sensitive to halogen gas in the air It also can detect R141b in urethane Please practice therefore many times before use NOTE Please contact Songso company on 82 53 554 2067 if you have inquiry on heavy repair special facility 80 PROBLEM DIAGNOSIS 3 2 Summary Of Heavy Repair Process Contents Tools Problem diagnosis Remove rn Residuals Cut charging pipe ends and discharge refrigerant from drier and compressor Filter side cutters Parts replacement and welding Use R134a oil and refrigerant for compressor and drier Confirm Ne sealing and packing conditions before use Use good one for welding and assembly Weld under nitrogen gas atmosphere N2 gas pressure 0 1 0 2kg cm Repair in a clean and dry place Pipe Cutter Gas welder gas Evacuate for more than forty minutes after connecting manifold gauge hose and vacuum pump to high drier and low compressor refrigerant discharging parts pressure sides Evacuation Speed 113liters minute Vacuum pump R134a exclusively Manifold gauge Refrigerant charging and charging inlet welding Weigh and control the allowa
63. sound 3 Fan operation sound in the freezer compartment 3 1 Check fan insertion depth and see if there is blade damage 3 2 Check for interference with structures 3 3 Check fan motor 3 4 Check fan motor bushing insertion and aging conditions 4 Fan operation sound in the compressor compartment 4 1 Same as fan confirmation in the refrigerator 4 2 Check drip tray leg insertion 4 3 Check the screw fastening conditions at condenser and drip tray 1 Maintain horizontal level 2 Replace bushing and seat if they are sagged and aged 3 Tuch the piping at various place along is route Install a dampe at the point where your tuch reduces the noise 4 Avoid pipe interference 5 Replace defective fan and fan motor 6 Adjust fan to be in the center of the fan guide 7 Leave a clearance between interfering parts and seal gaps in the structures 8 Reassemble the parts which make produce sound 9 Make a clearance if evaporator pipes and suction pipe contact freezer shroud SISONSVIG WI1I04d 21 Problems Causes Checks Measures Remarks Vibration sound Clunk Vibration of shelves and foods in the refrigerator Pipe interference and capillary tube touching in the compressor compartment Compressor stopper vibration 4 Moving wheel vibration 5 Other structure and parts vibration 1 1 Remove and replace the shelves in the r
64. special parts and tools for R134a 2 Removal of retained refrigerant 1 Remove retained refrigerant more than 5 minutes after turning off a refrigerator If not oil will leak inside 2 Remove retained refrigerant by cutting first high pressure side drier part with a nipper and then cut low pressure side If the order is not observed oil leak will occur Evaporator Compressor Low pressure side Condenser 1 High pressure side 3 Replacement of drier 1 Be sure to replace drier with R134a only when repairing pipes and injecting refrigerant 4 Nitrogen blowing welding 1 Weld under nitrogen atmosphere in order to prevent oxidation inside a pipe Nitrogen pressure 0 1 0 2 kg cm2 5 Others 1 Nitrogen or refrigerant R134a only should be used when cleaning and sealing inside of cycle pipes inside and sealing 2 Check leakage with an electronic leakage tester 3 Be sure to use a pipe cutter when cutting pipes 4 Be careful not to let the water let intrude into the inside of the refrigerant cycle path 82 PROBLEM DIAGNOSIS 3 4 Practical Work For Heavy Repair Items Precautions 1 Removal of residual refrigerant Evaporator Low side NOTE Observe ihe seguence for removal of refrigerant Otherwise compressor oil may leak Compressor High pressure side Intake 1 Remove residual refrigeran
65. the AMP DIGITAL PARTS MANUAL 2 2 Outline Diagram and INPUT OUTPUT Structure 2 2 1 Outline Diagram CON3 TXD 3 dc 1CS 0 ENABI F I REMOCON SIG IN T M RIA GOR x R16 ACE RTT R25 w WB CONI CON2 P3 P2 PI GND PO SV 16 LEDI R26 m R27 w 5 SZ J V 04 03 02 1 6871JB1139 EQ CE1 O SSS o 1 8 CONS CON4 I SOUND SOUND IN R IN 1 C3 2 2 2 INPUT OUTPUT Structure SYMBOL INPUT OUTPUT Input Output SPEC DC 5V GND DC 5V GND REMOCON SYMBOL REF ERR P3 REF ERR P2 REF ERR P1 GND REF ERR PO DC 5V N C INPUT OUTPUT Input Output SPEC SOUND L GND SOUND L2 SOUND R1 GND SOUND R2 ON 03 GND TXD ENABLE CS0 CS1 DATA 0 DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 N C SOUND R IN GND SOUND L IN GND SOUND R OUT GND SOUND L OUT 105 220V L 220V
66. vacuum pump degassing shall be ffective Pipe Connection more effective compressor Connect red hose to the high pressure side and a blue hose to the while charging low pressure side refrigerant It is easier and more certain to do like Open valves 1 and 2 and evacuate for 40 minutes Close valve this LN Vacuum Sequence 5 Refrigerant charging Charging sequence 1 Check the amount of refrigerant supplied to each model after completing vacuum degassing 2 Evacuate bombe with a vacuum pump 3 Measure the amount of refrigerant charged Measure the weight of an evacuated charging canister with an electronic scale Charge refrigerant into a charging canister and measure the weight Calculate the weight of refrigerant charged into the bombe by subtracting the weight of the evacuated bombe Indicates the weight of NOTE an evacuated bombe Be sure to charge the refrigerant at around 25 C 77 F Be sure to keep 5g in the winer and 5g in summer Calculation of amount of refrigerant charged the amount of refrigerant charged a weight after charging a weight before charging the weight of an evacuated cylinder 84 PROBLEM DIAGNOSIS Items Precautions Evaporator Compressor ALAS Condenser 4 Refrigerant Charging Charge refrigerant while operating a compressor as shown above 5 Pinch a charging pipe with a pi
67. 005 CV910320 TNC 1 11106 32mH 1A 12 107 2 2 108 041500 4 0 1 SOUH na 15 4 1 1 1093J02447C F U S 15 250 2 2 110 6901W88001A FUSE HODR 1 sam JU 1111111 jorzzB3001AlF U SE 2A 250V FUSE2 112 2 2 113 0001030 250 TAB cP881191 2 1 2 1 1 114 1SBF0302418ISCREW 5 H SINK TAE SUNG 1 09 8 09 115 9111001 50 KR 19RMATHEUNS sowo 259259 116 49111004 sone LEAD 6 59 5g 117 59333105 FLUX AUTO JS71 KOKI FUSE1 47 EXPLANATION MICOM CIRCUIT 3 3 DISPLAY ASSEMBLY part diagram Ui 4 81 5 1 i WOR d 2 AE 5 A 5 a Qty P NO DESCRIPTION SPEC MAKER REMARK 1 1 6304TW1009_ LCDCLIQUID CRYSTAL DISPLAY TN 497 gt WINTEK i el PWB FR 4 3 REFLECTOR ABS NIT TOS00 lt WeMM 1 5 SHNSHEET 5 141 44 25 TSUJIDEN E 388357 1 6 WAFER SMAW250 04
68. 054 JWIgFHN NAIS 25 RY2 4 08039010609 3 9K 1 4W R36 43 ns RYIT R LAMP R4 13 28 30 692082004 DH12DI 0 Q JAHL NAE sU 08047010609 4 7K 1 4W R41 48 57 60 61 26 6920 82005 JWioFHN 6920820038 ALD112 NAIS MIST T 108010026609 10K 1 4W R11 37 44 08012020609 12K 1 4W 27 2 RELAY 656 1 OMRON BAR HTR az RCF1 28 7 7 29 69200820038 ALD112 NAIS RY5 10 12 13 108082010609 8 2K 1 4W ORD10026609 10K 1 4W RCR1 RY8 6920820058 ALD112 NAIS VALVE 31 ORN10026409 RMETAL FILMI1QKF 1 4W RTI 32 loRN16226409 16 2 1 4W RFIRIMI 6212J880018 CSTS4 00MG03 SC 33 RESONATOR MURATA 0 DRN26126409 26 1KF 1 44 RD1 RR1 2 1570 000128 CST4 00MGW TF01 6212 09002 ORM1201N661 12K 6102 880018 INR14D621IL JIN ORS2701K600 2 7K 2W RS1 DAMPER 1 1 34 PN 451 VARISTOR VAI JUMP WIRE INR14D271 IL JIN R R5 35572 00000 08003325672 33 1 8W 08010016672 1K 1 8W R8 PRE FR102 DRD1000672 hoo 1 8W R10 BF ODR107009AA FR107 01 DEW R29 31 33 49 au 37 FAST RECINER D DEA 0802001672 2 1 8W RST 53058 88 38 0DR302000BA FR302 0804701 672 RESISTOR 4 7 1 8W ROHM R22 25 35 42 1 3 39 000400709 ie 1N4007 020 0801002672 90 22 TIE 178w R14r 21 0DD414809BB SWIOHNG DIODE 1N4148 6 ORD1004E672 HM 1 8W R12 40 ooo4oodo9ac RECTMER DODE 1N4004 Th CHANG 1 11
69. 1 Function This is one of the key components of the internet refrigerator and it is a controller where TV audio video input output internet functions reside 1 2 Connector Connection Diagram and Names ATX POWER IDE 6 8 rh 7 TVIN abla 4 CCD IN ofp 47 u P De sh PARALLEL mE MAC ADDRESS De TUNER SERIAL NUMBER I 5 Ben ii m TOUCH 8 X 03 TMDS _ LL CD DEAL i En 5 POWER S W aS MIC IN L x eU SOUND OUT TV SOUND IN 101 DIGITAL MANUAL 1 3 Function and Connecting Parts Function Connect to supporting device External CDROM Connecting Part Extended connecting cable LAN C
70. 2K BE 1 d R28 P44 45 Transmission 4 7K 1 gt H4 12Vdc lt E un 2 Transmission 23 gt GND un un Reception ea E 43 EXPLANATION CIRCUIT 2 Sensor resistance characteristics table Cold storage sensor 1 2 Measuring Temperature C F Freezing Sensor Frost removal sensor Outside sensor 20 C 4 F 22 3 77 15 5 0 F 16 9 60 kQ 15 5 0 F 13 0 47 3 5 23 0 F 10 1 38 4 0 32 F 7 8 KQ 30 5 41 F 6 2 24 1 10 C 50 F 4 9 KQ 19 5 15 C 59 F 3 9 15 9 20 68 F 3 1 13 25 77 F 2 5 11 30 C 86 F 2 0 8 9 40 C 104 F 1 4 6 2 50 122 F 0 8 4 3 gt Resistance value tolerance of sensor is 5 gt In measuring resistance value allowance of sensor perform measurement after leaving the sensor for more than 3 minutes at the measuring temperature delay is required due to sense speed relation relationship gt Since an analog tester has a large measuring temperature measuring with a digital tester is strongly recommended gt Resistance of the cold storage sensor 1 and 2 shall be measured with a digital tester after separating CON8 of the PW
71. 50 mm in minimum Check dust on the grill in compressor compartment Check dust on the coils condenser Keep clearance between refrigerator and walls minimum 50mm Remove dust and contaminants from grill for easy heat transfer Remove the dust with vacuum cleaner from the coils condenser while the refrigerator is off The fan may be broken if cleaning is performed while the refrigerator is on SISONDVIA WI1I04d 69 2 4 Cooling in the freezer compartment drier inlet and outlet and drier auxiliary in the compressor compartment high pressure side 2 Check the end of compressor sealing pipe low pressure side 3 Check silver soldered parts Cu Fe Fe Fe 4 Check bending area of wire condenser pipe in compressor compartment cracks can happen during bending 5 Check other parts compressor compartment and evaporators in freezer compartment Problems Causes Checks Measures Remarks High Refrigerant leak Check sequence Weld the leaking part recharge the Drier must be replaced temperature 1 Check the welded parts of the refrigerant Shortage of refrigerant Check frost formation on the surface of evaporator in the freezer compartment If the frost forms evenly on the surface it is OK If it does not evaporator is not good Locate the leaking area repair evacuate and recharge the refrigerant If not leaking rem
72. 6 2 C 3 6 5 6 1 0 1 8 F 3 3 3 C 5 4 F 3 3 1 5 2 7 F 2kQ 4 C 7 2 F 2 2 0 3 6 Cooler 4700 5 9 F 4700 2 5 C 4 5 F compensation b Temperature compensation table by adjustment value difference value against current temperature Ex If changing compensation resistance at cold storage room RCR1 from 10 current resistance to 18 modified resistance temperature at the cold storage will increase by 1 C 1 8 F 40 EXPLANATION FOR CIRCUIT gt Temperature compensation table at the cold storage room is as follows Modification 4700 2kQ 3 3kQ 5 6kQ 2kO 10kQ 12kO 18kQ 33kO 56kQ 180 resistance No 0 5 1 C 15 2 C 25 C 3 C 35 C 4 C 45 5 C 4702 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F 5 4 F 6 3 F 7 2 F 8 1 F 9 change Up Up Up Up Up Up Up Up Up Up 0 5 0 5 1 C 1 5 C 2 C 2 5 3 C 13506 4 C 45 C 2kQ 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F 5 4 F 6 3 F 7 2 F 8 1 F Down change Up Up Up Up Up Up Up Up Up 1 C 0 5 0 5 1C 15 C 2 C 1250 3 135 4 3 3 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F 5 4 F 6 3 F 7 2 F Down Down
73. 6 Refrigerant r Malfunction of charging cylinder too much or too little Wrong setting of refrigerant 7 Continuous operation nsufficient compressor Faulty compressor No contact of temperature controller Foreign materials 8 Damper opens continuously r Foreign materials P U liquid dump jammed r EPS water sediment Screw Failed sensor Position of sensor Characteristics Bad characteristics of its own temperatue of damper Parts misuse Charge of temperature Impact characteristics 9 Food storing place Near the outlet of cooling air Bad low termperature RPM characteristics Check visually after disassembly E Check visually after disassembly 57 PROBLEM DIAGNOSIS 5 operation Faulty contacts 6 Condensation and ice formation 2 Food storate Store hot food Store too much at once Door open _ Packages block air flow 1 Faulty temperature sensor in freezer compartment Faulty contact Faulty temperature characteristics 2 Refrigeration load is too much Too much food Hot food r Frequent opening and closing Cool air leak Poor door close Partly opened 3 Poor insulation 4 Unit is hot High ambient temperature Space is not sufficiently ventilated 5 Refrigerant leak
74. APACITOR PART PLUG TYPE COMPRESSOR EARTH PART PILOT VALVE S W PART ASSEMBLY ON CIRCUIT DIAGRAMS ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITES AND ACCORDANCE WITH MODEL NEUTRAL F FAN MOTOR PWB ASSEMBLY MAIN CON7 BL BLDC C FAN MOTOR PR YL SB BLDC BN F DOOROPEN 0 RD PERCEPTION BO DEFROST SENSOR BO F SENSOR WH ICE MAKER MOTOR HALLIC ICE MAKER TEST SW ICE MAKER SENSER R2 SENSOR R1 SENSOR pend HOME BAR DOOR OPEN PERCEPTION DAMPER MOTOR REED S W PWB ASSEMBLY DISPLAY CON101 AMBIENT SENSOR RD 1 BO 3 BN 2 BKWH 4 HEATER SHEET DUCT DOOR SUB CONTROLLER CON2 GN YL BK BO RD BN DIGITAL PART CIRCUIT PWB ASSEMBLY SUB FUSE 250VAC 15 oe GNYL GN N R DOOR Id 47 DOO
75. B ASSEMBLY and the MAIN part gt Resistance of the freezing sensor shall be measured with a digital tester after separating CON7 of the PWB ASSEMBLY and the MAIN part 44 EXPLANATION FOR MICOM CIRCUIT 3 PWB parts diagram and list 3 1 PWB Assembly main part diagram 45 EXPLANATION MICOM CIRCUIT 3 2 Parts list DWG NO DESCRIPTION SPEC MAKER REMARK am lar DWG DESCRIPTION SPEC REMARK 1 1a 1 6870JB8011 PWB MAIN FR 1 DS 1107A DOO SAN t 1 6 45 CILLUM 220uF 16 cov CES 1A 6170482013 1 2 1 74mH 46 OCE1061K638 100uF 25V CE8 2 TRANS SAMIL TRANS 47 JOCESB7HHSSO nt 680uF 25V 48 0 2287 690 2200uF 25V SAM 4 49 OCE107AH610 100uF 50V 2 S KU 1 1 4 6630880010 JE202 1T 11 CON2 50 0 227 638 220uF 25V CE6 7 1 1 5 16630880018 0 24 CON4 51
76. CD off during troubleshooting check Defects between Hall IC and Board Pin No 42 of IC1 Confirm ice ejection and level return when pressing test switch Are ice ejection and level return normal when test switch is pressed for more than 0 5 second Does the bell sound once Failed Icemaker unit test switch Replace Icemaker Unit Are both ends 5 6 of CON9 test switch open Defects between test switch and board Pin No 38 of IC1 Are both ends 3 4 of CON9 ice maker stop switch short Is water suppy normal after Ice ejection and level return by ice ejection motor Replace water supply valve Poor water supply 5 power applied to water supply valve Does the water supply valve work normally lt Is the water supply line normally connected Normal 22 ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 4 Icemaker circuit part RIM1 P64 60 R55 16 2KF 1 T m Wy 1 ICE MAKER SENSOR 104 T 2 pao 7 R57 d er 26 x is c uS ICE MAKER Te TEST S W 777 im 7 2 par X 7 3 ee 1 CC27_L 104 T r 777 8 718 CEB 100uF 82 2 Ik fav P36 39 10 9 p37 9 5 684 2W 10 ICE MAKER BA6222 T 223 100V MOTOR 3 2 BET
77. Collect the spilled water and throw it into the sink 5 When ice tray has finished rotation water comes out from the water tube Confirm the amounts of water in the ice tray Refer to fig The optimum amount of water is 110cc 6 7in3 Confirm the amount of water Icemaker It is acceptable if the adjusted level of water is a bit smaller than optimum level 8 HOW TO INSTALL REFRIGERATOR 3 2 Control the amount of water supplied to the Icemaker Caution Unplug the power cord from the wall outlet and wait for more than three minutes before disconnecting PWB cover as 310V is applied in the control panel 1 Disconnect PWB cover from the upper part ofthe refrigerator Driver 2 Adjust the amount of water supplied by using the DIP switch Water Supplying Time Control Option SWITCH NO Water Suppling Switch 1 Switch2 Switch3 Time OFF OFF OFF 6 Sec ON OFF OFF 4 Sec OFF ON OFF 4 5 Sec ON ON OFF 5 Sec OFF OFF ON 5 5 Sec ON OFF ON 7 Sec OFF ON ON 8 Sec ON ON ON 9 Sec 1 The water supplying time is set at five seconds when the refrigerator is delivered 2 The amount of water supplied depends on the setting time and the local water pressure 3 If the ice cubes are too small increase the water supplying time This happens when too little water is supplied to the tray eg change 5 to 5 5 seconds 4 If ice cubes stick together decrease the water s
78. DIAGNOSIS 4 3 Odor and Frost Problems Checks and Measures Odor in the refrigerator compartment Explain the basic principles of food odor Each food has its own particular odor Therefore it is impossible to prevent or avoid food odor completely when food is stored in a completely sealed refrigerator compartment The deodorizer can absorb some portions of the odor but not completely The intensity of odor depends on refrigerator conditions and environment Check the temperature control button and set to strong Clean inside of the refrigerator with detergent and remove moisture Dry inside the refrigerator by opening the door for about 3 or 4 hours and then set the temperature control button to strong Frost in the freezer compartment Explain the basic principles of frost formation The main causes for frosting Door is left open Air penetration through the gasket Too frequent door opening parties etc Hot foods are stored before they are cooled down The temperature of freezer is 19 C 2 2 F if temperature is set at MID If hot air comes into the refrigerator fine frost forms as cold air mixes with hot air If this happens quite often much frost forms inside of the refrigerator If the door is left open in summer ice may form inside of the refrigerator Frost in ice tray Explain basic principles of frost formation When ice tray with full of water is p
79. ER TYPE DIOS70B ABD Input voltage range 1 5 1 1 8Kv sec Insulated resistance over 10 Mohm OJN SKY BLUE POWERSWON BLACK BLACK BLACK 4 75 5 25 WHITE Output 5 4 85 5 15 RED Output 5 4 85 5 15 RED 111 DIGITAL PARTS MANUAL 6 LCD MONITOR 6 1 Function After receiving the LCD video output from the main controller this device outputs it to the LCD monitor 6 2 Outline Diagram VE 2 e 4 5 C LMISIK3 C LCD Inverter Br Connector TMDS Cable LAS Connector Hirose 20pin a DF19K 20P 1H koce Lapin KEE DFI9L 14P 1H 6 3 Specifications of parts 1 MAKER LG PHILIPS 2 MAKER TYPE LM151X3 B3AP 3 15 1 XGA TFT LCD SPEC Pixel Pitch 0 300mm X 0 300mm Color Depth 8 bit 16 777 216 colors Luminance White 250cd m2 Power Consumption 2 1W Logic 9 7W CCFL Display Operating Mode TMDS 4 Operating Environment Operating temperature 0 C 32 F 50 C 122 F Operating humidity 5 90 under 40 C condition Storage Environment Storage temperature 20 C 4
80. IN DIGITAL MANUAL 3 HARDDISK 3 1 Function This is the program storage device for the Digital Section of the Internet Refrigerator HARDDISK Windows Certification Label 3 2 Outline Diagram Operation Classification Chart GR D732GRQ VERLO 1 KOREA NTSC 6957 JB3001 A Production Date 25 5 00000000000000000900 00000000000000000000 102 0 lt Operation Classification Chart gt Operation HDD SWITCH MODEL NAME Classification VERSION 9 LANGUAGE NETWORK VERSION REMARK A 1 R D732GRS KOREA STANDALONE VER 1 0 GR D267FTU ENGLISH PAL I STANDALONE GR D267FTU SPAIN NTSC STANDALONE GR D267DTU ENGLISH NTSC STANDALONE GR D267DTU SPAIN PAL B G STANDALONE ATI M6 CHIPSET GR D267DTU ENGLISH PAL B G STANDALONE ATI M6 CHIPSET GR D267DTU ENGLISH NTSC STANDALONE ATI M6 CHIPSET 106 DIGITAL PARTS MANUAL 3 3 Connecting Method to Connector upon replacement When servicing the hard drive it is replaced with the program preinstalled and according to the Operation Classification Chart lt Connector section of hard disk gt Option Pin Verifies MASTER location 2 000 projection hole Tr
81. L G http biz Igservice com REFRIGERATOR CAUTION PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS BOOK BEFORE SERVICING OR OPERATING THE REFRIGERATOR Ref No GR D267DTU MODEL LRSPC2661T COLOR TITANIUM CONTENTS WARNINGS AND PRECAUTIONS FOR SAFETY uuunuusnsaansansunnsunsunnnunnunnnunnnnnnunsnnnnunnunnnunnunnnunnnnnnnnnnunnnnnnunsnnnnnnnnannnnnnannnnnnnnnn 3 21421814197 4110 um 4 PARTS IDENTIFICATION m 5 HOW TO INSTALL THE REFRIGERATOR uusuususssunansunnennnunnnunnunnsunnunnnunnnannunnunnnunnnnnnunnnnnnunnnnnnunnnnnnunnnunnunnnunnnunnunnnunnnannnnnnnn 6 HOW TO ADJUST DOOR HEIGHT OF THE 6 HOW TO INSTALE WATER PIPE ede E m ER 7 HOW TO CONTROL THE AMOUNT OF WATER SUPPLIED TO THE ICEMAKER 8 COOLING CYCLE AND REFRIGERANT ages agan nee anane 10 FUNCTIONS AND OPERATION PRINCIPLES OF MAIN 2 2 1 1 11 11 sensns sinas atn sata ains ata asas ann 12 COMPRESSOR RECIPROCATING Ka D Da E Dagan GEGE na gd A ah a 12 OVER LOAD PRO TE O TOR tendu hati Beim 12 POSITIVE TEMPERATURE COEFFICIENT 1 12 SWITCH DOOR HOME BAR 13 MOTOR al ed ee EHI HERE REN 14 SOLENOID i une xe
82. LAYOUT P 98 DIGITAL PARTS nana naka a aga KENEN E 101 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION 122 EXTERNAL EXTENSION PORT 131 HOW TO DISASSEMBLE AND ASSEMBLE DIGITAL SECTION 132 EXPLODED name aa nn Kan 136 DIGITAL SECTION COMPONENTS uu22uu2u00000202000000200000n200n00nnunnnnnnunnnnnnnnnnnnnnnnnunnnannunnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnunnnnnnnnnnnn 144 REPLACEMENT PARTS LIST 146 WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions in order to safely and properly use the refrigerator to avoid hazards and prevent accidents during repair 1 Avoid the risk of electric shock Disconnect power cord from wall outlet and wait for more than three minutes before replacing PWB parts Shut off the power whenever replacing and repairing electric components 2 When connecting power cord make sure that the power cord has been disconnected from the wall outlet for at least five minutes 3 Check for damage to the power cord and plug If the power cord or plu
83. MP 2 It operates at the single RPM without varying RPM 3 Failure sensing method is same as freezing fan motor refer to failure diagnosis function table for failure display 2 13 Door opening alarm 1 Buzzer generates alarm sound if doors are not closed even when more than a minute consecutively has passed with doors of freezing cold storage chamber or home bar opened 2 Buzzer rings three times in the interval of 0 5 seconds after the first one minute has passed after doors are opened and then repeats three times of On Off alarm in the cycle of every 30 seconds 3 If the doors of freezing cold storage chamber or home bar are closed during door open alarm alarm is immediately deactivated Doors of freezing cold storage Closing Opening Closing Opening Closing chamber or i 3 Times 3 Times 3 Times 3 Times BUZZER 4 gt ba 064 _ gt gt Within A minute 80 30 3 a minute Seconds seconds seconds 2 14 Ringing of button selection buzzer 1 If pressing the front display button a bell sound rings 2 15 Ringing of forced operation forced frost removal buzzer 1 If you press the test button on the Main PCB a tone sounds 2 In selecting forced operation alarm Sound is repeated and completed in the cycle of On for 0 2 second and Off for 1 8 second three times 3 In selecting forced frost removal alarm sound is repeated and completed in the cy
84. NATION FOR MICOM CIRCUIT 1 2 Oscillation circuit The oscillation circuit is a circuit with the purpose of generating basic time for clock occurrence for synchronization and time calculation related to information transmission reception of internal circuitry in IC1 MICOM The OSC1 must always use rated parts since If SPEC is changed time calculated at the IC1 may be changed and internal operations may cease entirely MICOM 30 XIN CSTS4 00MG03 x SE KOUT 31 1 3 Reset circuit The reset circuit is a circuit allowing various parts such as RAM inside of MICOM IC1 to initialize and the whole of function to start from the initial status when initial power is input or when power is reapplied again to MICOM following a spontaneous power loss A LOW DC level is applied to the reset terminal of MICOM in the beginning of power supply for a constant time 10ms Reset terminal during general operation is 5V No MICOM operation occurs in failure of RESET IC _ MICOM 9 en 1 kia7042 3 epo 2 RESET 2 T 33 EXPLANATION FOR MICOM CIRCUIT 1 4 Load dispenser operation door opening circuit 1 Load driving circuit Even if opening the door of freezing chamber cold storage chamber during operation of fan motor at the freezing chamber this circuit does not stop and operates at the standard RPM In addition if doors of freezing cha
85. O TVONIS 30333 434 H3YV3dS 5 1882 060 1041409 5 ans aMd NI H3MOd __ oH LNdNI 831108109 10 9814 SdWS Mr TAN gt 299 WNOOIN 1HOd lelle ed LNO9 43H LNOO yana jer lt gt asn 3AI393H AL 00 X5 epoo5 J8 011u0 m MP e 099 OLOHd INN 1 He 4 940008 ino 037 007131 ndinonndun 8450 Au HONOL aur avi gt Auf 140d NOISNALXD ZEZ SU ZN INQ Aur S L y noL 1994551 a IN3SN39VNVN 13534 98 DIGITAL SECTION LAYOUT
86. OTOR CUBE Waren DISPENSER HEATER PILOT Measuring part IC6 13 IC6 12 IC6 11 IC6 10 IC7 12 IC7 10 IC7 16 ON Within 1 V tat V OFF 12V 2 Lever S W sensing circuit Measuring part IC1 Micom No 16 Lever SWITC 5V On Press au 60 Hz OFF 5V EXPLANATION MICOM CIRCUIT 3 Door opening sensing circuit CON7 P46 47 R33 2 5 2K BA F DOOR 5 e CONB H BAR DOOR S W ee R51 is 3 221 2K R DOOR S W 104 T T 4 Measuring part ee ara ar IC1 MICOM No 47 46 Pin Door of Freezing Cold Storage Room Closing 5 V Q9 B D SWITCH at both ends are at Off status Opening 5 V 0 SWITCH at both ends are at On status Since door switch sensing switch A B is a separate switch even if the door switch of the freezing room normally operates they may fail to sense door opening in the failure of switch at both ends of A and B or in failure of the L wire Lamp in the cold storage chamber does not turn on if the MICOM of the cold storage chamber fails to sense the door open switch C D or the home bar switch 36 EXPLANATION FOR CIRCUIT 1 5 Temperature sensing circuit The above circuits are circuits attached to freezing
87. Over freezing in the freezer compartment Faulty MICOM Refrigerator operation pulls down Check if it is operates intermittently The Temperature of freezer compartment is satisfactory but over freezing occurs in the refrigerator compartment even though the notch is set at weak Replace defective parts 4 Bad defrosting Heater wire is cut Faulty defrost sensor Defrosting cycle Check frost on the evaporator after dissembling shroud and grille See if ice is the intake port in the refrigerator compartment Check parts related to defrosting Check defrosting Check ice on the evaporator and pipes after forced defrosting 5 User is not familiar with how to operate Door remains opened High moisture food water is stored See if food holds doors are open See if ice on the ice tray Be acquainted with how to use SISONSVIG WA18d O0dd 11 2 7 Problems Causes Checks Measures Remarks Hiss sound 1 Loud sound of compressor operation 1 1 Check the leveling of the refrigerator 1 2 Check the bushing seat conditions sagging and aging 2 Pipes resonate sound which is comes from the compressor 2 1 Check the leveling of pipes connected to the compressor and their interference 2 2 Check bushing inserting conditions in pipes 2 3 Touch pipes with hands or screw driver check for change of
88. R SWI SWITCH 9 RD ITCH F LAMP EXE o HOME BAR PART DISP LAMP BL GEARED MOTOR 0 SOLENOID CUBE OP OREG DISPENSER LEVEL SW WHIN PILOT VALVE HEATER PLATE HEATER PLATE DAMPER 6 R LAMP T og LAMP 65 RLAMP PK RUI 1 STARTING RD CAPACITOR eu TT US CAPACITOR PART BN N gt COMPRESSOR EARTHPART P T C ASSEMBLY JI HEATER SHEATH ML Mm BN HEATER SHEATH AL FUSE MELTING 72 C HEATER PLATE DRAIN BN N 3854JD1076C BK BLACK BN BROWN YL YELLOW GN GREEN SB SKY BLUE PK PINK BO BRIGHT ORANGE PR PURPLE GN YN GREEN YELLOW 52 GY GRAY RD RED WH WHITE WH BK WHITE BLACK BL WH BLUE WHITE RD WH RED WHITE PROBLEM DIAGNOSIS 1 Trouble Shooting CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 1 Faulty start 1 No power on outlet 2 No power on cord
89. Reset the filter status by pressing the filter replace button for more than 3 seconds to after replacing filters when 6 months of filter use have transpired or merely if desiring to reset the filter display status 2 6 Automatic Icemaker In initial 2 Months 3 Months 4 Months 5 Months 6 Months Classilication use use use use use use RESET PUSH 3 SEC FILTER STATUS FILTER STATUS FILTER STATUS FILTER STATUS FILTER STATUS FILTER STATUS Filter Status 6 E 6 6 6 Display 5 5 5 5 5 4 4 4 4 4 3 3 3 3 3 2 2 2 2 2 1 1 1 1 1 automatic Icemaker can automatically make 8 pieces of ice at a time up to 10 times day These quentities may vary according to various conditions in cluding how many times the refrigerator door opens and closes making stops when the ice storage bin is full If you don t want to use automatic Icemaker switch the Icemaker OFF If you want to use automatic Icemaker later switch it ON NOTE It is normal that a noise is produced when ice made is dropped into the ice storage bin 25 MICOM FUNCTION 2 7 When Icemaker does not operate smoothly Ice is frozen together When is frozen together take the lumps out of the ice storage bin break them into small pieces and then place them into the ice storage bin again When the Icemaker produces ice too small or frozen ice the amount of wate
90. The resistance is infinite when the 1 Replace parts cut or corroded Chilled drawer drawer is high resistance is measured at both Reconnect if the wire 2 Poor terminal duct icing on duct connector ends with a tester is cut contact 2 The resistance significantly very much 2 Correctly insert when the resistance is measured at both connector connector ends with a tester Heater Plate Incorrect refrigerator damper compartment temperature icing on the duct Heater Plate Dew forms around the 1 Remove connector from freezer hinge dispenser dispenser and measure the resistance of heater Sheath Heater Dew forms around duct door 1 The resistance is infinite when it is duct door measured at both connector ends with a tester Cord Heater Dew forms around 1 Remove connector from R hinge and Frame LCD Frame LCD measure the resistance of heater 8 Valve 1 Nomenclature of each part Solenoid Coil 2 Spring Plunger Packing 5 Holder Flow Control Flow Washer 2 Operation Principles 1 While Opening When power is on and the inlet water pressure reaches at a certain value the plunger 3 moves up by solenoid coil The water passes through porous hole and then center holes of the holder and flows to the outlet Flow control 6 and flow washer 7 are included in order to maintain a constant flow rate and pressure 1 0 8 0 kgf cm in A line water supplied to icemaker 2 Whil
91. ator sensor SISONSVIG WI1I04d 84 Problems Symptom Causes Checks Measures Remarks Bad defrost Defrost is not Defrost lead wire is cut Using a tester check if defrost lead Reconnect Lead working wire is cut with a tester Wire Defective defrost drive relay Check the voltage of CONS 1 and 7 Replace relay RY 7 Refer to load with a tester after pressing main and RY 14 or PCB driving conditions PCB test switch twice check in circuit If the voltage is normal then relay is OK explanation Defective defrost sensor parts Check the resistance of defrost sensor Replace defrost Refer to sensor with a tester sensor resistance characteristic table of circuit explanation Defective Buzzer Defective connecting lead wire from Check lead wire related to door Repair lead wire buzzer continuously main PCB to door switch switch with a tester rings or door Defective door switch parts Refer to door switch in parts repair Replace door switch opening alarm guide does not work Defective Buzzer does Key input wire is cut or bad connector Check input wire with a tester Reconnect lead Refer to display display button not ring and terminal contact in main PCB and wire and replace or circuit in circuit key does not function when pressed display PCB connecting lead wire directly connect bad contact terminal to lead wire explanation Key is continuously depressed due to structural
92. both water and ice valves 2 3 Ice Making Control Function 1 Ice making control is carried out from the completion of water supply to the completion of ice making in the cube mould Ice making sensor detects the temperature of cube mould and completes ice making ice making sensor is fixed below Icemaker cube mould 2 Ice making control starts after completion of water supply control or initial control 3 Ice making is determined to be completed when ice making sensor temperature reaches at 8 C 18 F 100 minutes after water is supplied to Icemaker cube mould 4 It is judged that ice making is completed when Icemaker sensor temperature reaches below 12 C 10 F after 20 minutes in condition 3 19 ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 2 4 Ice Ejection Control Function 1 This function ejects the ice from the Icemaker cube mould after ice making is completed 2 If Hall IC signal is on within 3 6 seconds after ice ejection motor rotates in normal direction it does not proceed with ice ejection but waits If the ice bin is full ice ejection motor rotates in normal direction in every hour to check the condition of ice bin If the ice bin is not full the water supply control starts after completion of ice ejection control If the ice bin is full ice ejection motor rotates in reverse direction and stops ice making 3 If ice bin is not full ice ejection starts The cube mould tilts to the maximum and
93. cation Type Gear box is used for moving and crushing ice which is stored in the ice bin Gear box is connected at the output axis of shaded motor Gear box changes high RPM of motor to low RPM but high power by gear box This power can move and crush ice CAUTIONS Do not operate solenoid for more than two minutes It may be overheat Solenoid is not for continuous use but discontinuous use as it operates when customer dispenses ice Stator 14 FUNCTIONS AND OPERATION PRINCIPLES OF MAIN PARTS 3 Troubleshooting Symptom Faults parts Check Measures Crushed ice comes out when 1 Connector is missed 1 Check connection parts 1 Join connector ice cube is selected 2 Solenoid for ice cube is 2 Check resistance between 2 Replace parts terminals The resistance is infinite when it is cut Ice does not dispense but 1 Connector is disconnected 1 Check connecting part 1 Join connector jams on the door path 2 Solenoid for dispenser is 2 Check the resistance 2 Replace parts when ice is selected cut between terminals Resistance is infinite when it is cut 7 Heater 1 Summary Heaters are used to remove dew and frost on the evaporator and ice and dew on the parts of refrigerator SXS Refrigerator Defrost System It is MICOM controlled automatic defrost system Heater turns on when the set time in MICOM has elapsed and off when the defrost sensor senses the
94. ced defrosting Check the restrainer attachment conditions on the evaporator and capillary tube weld joints Check the restrainer attached on the evaporator and capillary tube weld joints and attach another restrainer If sound is continuous and servere insert capillary tube again depth 15 3mm Fasten the capillary tube to suction pipes or detach in the compressor compartment Explain the principles of the freezing cycle Water boiling or flowing sound This happens when refrigerant passes orifice in accumulator s internal pipes due to the pressure difference between condenser and evaporator Check for the sound when compressor is turns on Check for the sound when compressor is turns off Explain the principles of freezing cycles and refrigerant flowing phenomenon by internal pressure difference If sound is servere wrap the accumulator with foam and restrainer Sound of whistle when door closes When door closes the internal pressure of the refrigerator decreases sharply below atomosphere and sucks air into the refrigerator making the whistle sound Check the sound by opening and closing the refrigerator or freezer doors Broaden the cap of discharge hose for defrosting in the compressor compartment Seal the gap with sealant between out and inner cases of hinge in the door SISONSVIG NI 18O0ud 74 2 8 5
95. cess Duct door is open Foreign material clogging Dew on the Not fully 128 Surface Liquid shortage door surface Corner Liquid leak P U liquid contraction Bad wing adhesion Bu sag lower part gasket surface Door liner shape mismatch Corner Too much notch Broken Home Bar heater is cut 5 Water on the floor Condensation in the refrigerator compartment r Defrosted water overflows Clogged discharging hose Discharging hose Evaporation tray located at wrong place location r Tray drip gt Damaged Breaks holes Small Capacity Position of drain 1 Compressor compartment operating sounds r Compressor sound Sound from machine itself Sound from vibration r Restrainer Bushing Too hard seat Distorted r Aged Burnt Stopper Bad Stopper Not fit assembly inner diameter of stopper Tilted Not inserted r Compressor base not connected Bad welding compressor stand fallen Foreign materials in the compressor compartment OLP sound Chattering sound r Capacitor noise Insulation paper vibration Pipe sound Pipe contacts each other Narrow interval No vibration damper Damping Bushing Q Damping Bushing S Capillary tube unattached
96. chamber sensor and cold storage room sensors for adjusting m CON7 62 1 F SENSOR AN6 comal 2K 104 T RDI 2 61 477 R32 26 1KF P65 AN 3 evo D SENSOR AN5 15 104 T 4 1 CON8 RR1 P62 R33 26 1KF AN 5 evo R1 SENSOR CC25 104 T Ans 6L P63 9 FIT R54 26 1KF 7 t an AN3 sesa 2K R2 SENSOR 104 T 8 iji 9 uu P64 60 R55 16 1 evo ICE MAKER SENSOR AN4 el E 104 h 777 i RTI CON6 63 R29 10KF P67 7 RT SENSOR AN ec 2 2K 104 T temperature settings the freezing chamber and cold storage chamber ice maker sensor for sensing water temperature in ice making or and to an evaporator for sensing temperature of frost removal operations Short or open status checking of every temperature sensor is as follows SENSOR CHECK POINT ides 52 SHORTED OPEN Freezing sensor POINT Voltage Frost removal sensor POINT B Voltage Cold storage sensor 1 POINT Voltage 0 5 V 4 5 V OV 5V Cold storage sensor 2 POINT D Voltage Icemaking sensor POINT Voltage Room temperature sensor POINT F Voltage 37 EXPLANATION FOR MICOM CIRCUIT 1 6 Switch entry circuit The following circuits are entry circuits for sensing signal form test Switch and the electronic single motor damper reed Switch for examining the refrigerator
97. cle of On for 0 2 second Off for 0 2 second On for 0 2 second and Off for 1 4 second three times 27 MICOM FUNCTION 2 16 Frost removal function 1 Frost removal is performed every 7 to 7 5 hours of accumulated compressor operation time 2 After providing initial power or after power failure frost removal starts whenever total operation time of compressor becomes 4 to 4 5 hours 3 Frost removal is completed if temperature of the frost removal sensor becomes more than 5 C 41 F after starting frost removal Poor frost removal is not displaced if it does not arrive at 5 C 41 F even iftwo hours have passed after starting frost removal 4 No removal is done if frost removal sensor fails snapping or short circuit 2 17 Electric Equipment Progressive Operation Compressor defrost heater freezer fan cooling fan electromagnetic single motor damper etc start in the following sequence in order to prevent noise and parts damage when power is first applied and when testing is complete Function Load Starting Sequence Remarks When the temperature of If there is an error in GENG 1 2 14 FAN 14 1 4 HOME above 45 C 113F POWER sec COMP sec High Speed sec MOTOR sec BAR does not work F DAMPER gt when purchased ON ON ON ON HEATER E Load starting ormovedto ON seq uec 9 another house freezer and 2 When the
98. come cooler Ice cream softens E Explain the characteristics of ice cream The freezing point of ice cream is below 15 C 5 F Therefore ice cream may melt if it is stored in the door rack Store ice cream in cold place or set the temperature control button of a freezer to strong setting Refrigeration is too strong Check the position of temperature control setting Check if refrigeration is strong in whole area of the refrigerator or partly near the outlet of the cooling air If it is strong in whole area set the control button to weak If it is strong only near the outlet of cool air keep food particularly wet and easy to frozen such as bean curd and vegetables away from the outlet Vegetables are frozen Check the vegetables storage If vegetables are stored in the refrigerator shelf or chilled drawer instead of vegetable drawer they will be frozen Set the control button to weak if they are also frozen in the vegetable drawer The food stored at inside of the shelf freezes even the control button is set to MID Check if food is stored near the outlet of the cooling air The temperature at cooling air outlet is always below the freezing point Do not store food near the outlet of the cooling air as it blocks the air circulation Do not block the outlet If the outlet of the cooling air is blocked the refrigerator compartment will not be cooled 89 PROBLEM
99. como jrs Hee LCD een uie tiau 994 COM2 a 3 com2 i TAN COM3 4 38 Voss seco 72 5 seco 7 TEST 71 5 1 B d B ses2 20 8 sec2 P11 INT1 SEGS 68 9 SESS 2 transfer d SK SEG6 66 11156 17 SEG7 65 12 sEG7 10 INTO secs 64 13l lt ecs sEG9 63 14 SEG9 receive secio 62 15 seG10 SEG11 61 16 SEG11 P93 SEG12 60 17 5 612 P92 SEG13 59 18 SEG13 P91 SEG14 58 19 sEG14 P90 SEG15 52 20 sEG15 P67 SEG16 56 SEG16 BACK LIGHT 66 5 17 55 SEG17 0102 P65 SEG18 24 SEG18 xc D DER CE MAE 065 P64 SEG19 55 sEG19 pisa 0101 0104 P63 SEG20 52 29 2 9 4 106 529 Bener 50 SEG22 pias D1051 D108 12985 P60 SEG23 49 28 SEG23 ox 46 T P77 SEG24 2 9 SEG24 R126 P76 SEG25 weee SN LDH3 LDNG amp _ dico 1017 1720 7 1 10121 1 0124 1 101 gt TMP87CH21F Rise LDI25 LD128 40 9 lt LDie9 LDi32 ope 47K INT3 TC3 53 Es EAS R119 7 66 Ty IK Bias LD137 LD140 i LDI41 LD144 p41 10 R134 1 4 7K EE Teee I 24 1517 PWM PDO R135 d m Bine amp A ow e 4 4 m e we Ren AUT 7 666 R110 LD157 LD160 25 4 t SW101 QF EE 9 P30 o LDI61 LD164 R104 22 4 47 26 l esw102 s 10165 1 0168 7042 5 Pot 6 750 1
100. e Closing The water stops flowing to outlet as packing seals 4 the hole of holder 5 by spring when power is off 2472 Br Outlet YA ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 1 Working Principles 1 1 Icemaker Working Principles Power Input Initial Control Level Icemaker Cube Mould for Initial Control after power is applied Wait until the water in the cube mould is frozen after Icemaker starts operation Ice Making Control Ice Ejection Control motor in normal and reverse direction and eject ice into the ice bin if ice bin is not full Water Supply Control Test Control This is for refrigerator assembly line and service When ice making test switch is pressed it operates in the following steps initial ice ejection gt water supply control steps 1 2 Dispenser Working Principles 1 This function is available in Model GR D267 where water and ice are available without opening freezer compartment door 2 Crushed Ice is automatically selected when power is initially applied or reapplied after power cut 3 When dispenser selection switch is continuously pressed light is on in the following sequence Water gt Cube Ice gt Crushed Ice 4 Lamp is on when dispenser bushing button is pressed and vice versa 5 When dispenser crushed ice bushing button is pressed dispenser solenoid and geared motor work so that crushed ice can be dispensed if there is ice
101. efrigerator 1 2 Check light food and container on the shelves 2 1 Touch pipes in the compressore compartment with hands 2 2 See if capillary tube touches cover back 3 1 Check for compressor stopper vibration 4 1 Check for vibration of front and rear moving wheels 5 1 Touch other structures and parts 1 Reassemble the vibrating parts and insert foam or cushion where vibration is severe 2 Leave a clearance where parts would otherwise interfere with each other 3 Reduce vibration with bushing and restrainer if it is severe especially in compressor and pipes 4 Replace compressor stopper if it vibtates severely Irregular sound Click It is caused by heat expansion and contraction of evaporator shelves and pipes in the refrigerator 1 1 Check time and place of sound sources 1 Explain the principles of refrigeration and that the temperature difference between operation and defrosting can produce sounds 2 If evaporator pipe contacts with other structures leave a clearance between them freezer shroud or inner case SISONSVIG WI1I04d Problems Causes Checks Measures Remarks Whining Sound almost the same as animals crying sound happens when refrigerant expands at the end of capillary tube Check the sound of refrigerant at the initial installation Check the sound when the refrigerator starts operation after for
102. emove ice bank from the freezer compartment 2 Loosen two screws on the upper part of Icemaker bracket 3 Disconnect Icemaker bracket so that it can slide forward 4 Disconnect Icemaker housing and sensor housing b Disconnect Icemaker horizontally by pressing bracket hook part Don t disassemble further The set value may be changed 2 How to assemble The assembly is the reverse order of the above disassembly Icemaker Unit Insulation Sensor Cover Note When the ice tray is not horizontal after assembly assembly was performed in correctly Check and assemble again 7 2 Basic Model 1 How to disassemble 1 Remove ice tray assembly from the freezer compartment 2 Pull out knob from the ice tray in arrow direction At this time pull out a knob in arrow direction while shaking right and left as the knob is connected to pins in A 3 Spring can be removed by pulling ice tray in arrow direction and pulling out a spring inserted in ice tray axis from the hole of supporter ice tray 2 How to assemble Assembly is the reverse order of disassembly Supporter Ice Tray T Ice Tray Spring Note t is important to put one end of spring into the hole of the supporter ice tray and the other end on the lower part of an ice tray when inserting spring into the shaft 95 HOW DISASSEMBLE AND 8 DISPENSER 4 Loosen four screws with a phillips screwdriver and pull
103. er Reconnect Lead Wire Defective compressor Measure voltage at PCB CON5 Replace relay RY1 Refer to load drive relay 3 amp 9 after pressing main and RY14 or PCB driving circuit in test switch once It is OK if circuit voltage is normal explanation Defective freezer Defective Freezer Check resistance of freezer Replace freezer Refer to sensor sensor parts sensor with a tester sensor resistance characteristics table of sensor in circuit Freezer sensor is substituted for other sensor Confirm the color of sensor in circuits main PCB sensor housing Repair main PCB sensor housing explanation Defective freezer fan Fan motor lead wire Check fan motor lead wire Reconnect lead motor is cut with a tester wire Defective door switch Measure the voltage between Replace door Refer to load freezer refrigerator PCB power blue line and fan switch freezer drive circuits in home bar motor after pressing test switch refrigerator and circuit Defective fan motor of Main PCB If the voltage is home bar explanation Defective fan motor normal it is OK Replace fan motor drive relay Replace relay RY5 amp RY6 or PCB Faulty defrost Refer to faulty defrost items in problem diagnosis Refer to problem functions diagnosis function SISONSVIG I3 18O0ud 11 Problems Symptom Causes Checks Measures Remarks
104. er checking speaker section connector End Insert properly the Main Cont sound out connector End 128 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms Contents to check Measures There is no TV output Check TV function Press TV Function gt Set Channel gt Auto Channel buttons Does the Auto Channel Search work ls the connection No to the Main Cont TV Tuner an n Connector normal If same symptom occurs after replacing the TV Tuner ls visual output replace Main Cont possible Yes ls the connection to the Main Cont TV In Connector normal ls the connection No to the TV Tuner Video Out P3 connector normal Reconnect Main Cont TV In connector TV Tuner Video Out P3 reconnect P2 connector refer to structure It same symptom occurs after replacing TV Tuner replace Main Cont End 129 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms Contents to check Measures There is no output of TV sound Check the TV function Check connection of TV Sound Connector Isthe connection between the Main Cont No and TV Sound Connector ormal Yes Isthe connection between the TV Tuner and S
105. es in the order of Medium gt Medium Max gt Max gt Min gt Medium Min The actual inner temperature varies depending on the food status as the indicated setting temperature is a target temperature not the actual temperature within refrigerator Refrigeration appears to be weak at first use Please adjust temperature as shown after using refrigerator for minimum of 2 to 3 days 24 MICOM FUNCTION 2 2 LCD Back Light Control 1 In order to easily view display status on the LCD LCD Back Light turns on for a minute in application of initial power for a minute with button use and for a minute after closing the door 2 If pressing any display button once with the backlight turned off buzzer rings and button function is not performed but only backlight is turned on If pressing the first button with the back light turned off only back light ON function is performed 3 When pressing the special freezing button and the freezing temperature adjustment button for more than a second the back light is turns on and all the graphics of LCD are turned on If releasing the button the LCD graphic returns to in the previous state and the back light turns off check LCD graphic and back light ON OFF status 2 3 Outside temperature display function 1 The temperature sensor at the left U of refrigerator senses ambient temperature and displays that temperature in the left side of Outside temperature text on the LCD display
106. f whenever pressing the selection button Super freezing is released if power failure occurs and the re frigerator then returns to the original status Temperature setting is not changed even if selecting the super freezing option is selected A change of the temperature setting of the freezing chamber or the cold storage chamber is permitted with super freezing selected The change is processed while Super Freeze is active The cold storage chamber operates in the state currently set with super freezing selected and processed 7 Note that the super freezing the super freezing function deactivates after continuously operating compressor and the freezing room fan for a certain amount of time 8 If frost removal starting time occurs during super freezing super freezing operation executes only for the remaining time after completion of frost removal when the super freezing operation time passes 90 minutes If passing 90 minutes super freezing operation is carried out only for 2 hours after completion of frost removal 9 If pressing the super freezing button during frost removal the super freezing LCD indicator turns on but if pressing the super freezing compressor operates only after the remaining defrost time has passed 10 If selecting super freezing within 7 minutes delay for 7 minutes of compressor after the compressor stops compressor operates after the remaining time has passed 11 The freezing room fan motor operates at high
107. failure mode all LCDs of setting temperature for freezing setting temperature and for cold storage are turned off excluding Note1 and Note2 29 MICOM FUNCTION Note1 In failure of outside sensor the temperature setting for freezing cold storage displays normally and indicated Er is indicated on the outside temperature display part normally displayed except for the outside temperature display part Note2 Improper operation of R2 sensor Icemaker sensor and Icemaker kit are displayed LCD check but not indicated on the failure display part To check these items press freezing temperature adjustment button and special freezing button for a second or more Cold storage sensor 2 Normal C Part LCD graphic middle partition Abnormal Only C Part LCD graphic OFF r Normal D Part LCD graphic ON Icemaker sensor Abnormal Only D Part LCD graphic ON Other LCD graphics ON r Normal E Part LCD graphic ON L Abnormal Only E Part LCD graphic ON Icemaker Unit 2 19 Test Function 1 The purpose of the test function is to check function of the PWB and product and to search for the failed part when the product is in a failure status 2 Test button is located on the main PCB of refrigerator test switch and the test mode will finish after a maximum of 2 hours irrespective of test mode and then is before restting to the normal operation 3 Function adjustment b
108. g and cleaning The test switch is mounted under the automatic Icemaker The test function starts when the test switch is pressed for more than 0 5 second 2 Test button does not work during ice ejection and water supply It works when the tray is in the horizontal conditions If the mould is full of ice during test function operation ice ejection control and water supply control will not work 3 When the test switch is pressed for more than 0 5 second in the horizontal condition ice ejection starts irrespect of the mould conditions Water will splash if test switch is pressed before the water in the mould freezes Water shall be supplied while the mould returns to the horizontal conditions after ice ejection Problems involving ice ejection returning to the horizontal conditions and water supply can be checked via the test switch When test function performs normally a buzzer sounds and the water supply function begins Check it for repair if buzzer does not sound 4 When water supply function is completed the cycle continues as follows Ice making gt Ice ejection gt Returning to horizontal conditions gt Water supply 5 Remove ice from the Icemaker cube mould and press test switch When Icemaker cube mould is full of ice as ice ejection and water supply controls do not operate 2 6 Other functions relating to freezer compartment door opening 1 When freezer door is open ice dispenser stops in order to reduce noise and ice drop 2 When
109. g is damaged it could cause a fire or electric shock 4 The refrigerator should have its own individual electrical outlet Overloading any outlet can cause a fire 5 Please make sure the outlet is properly grounded particularly in a wet or damp area 6 Use standard electrical components when replacing parts 7 Make sure water connection is correctly engaged Remove dust and foreign materials from the housing and connecting parts 10 11 12 13 14 15 Do not fray damage machine heavily bend yank or twist the power cord Check for evidence of moisture intrusion in the electrical components Replace the parts or mask them with insulation tape if moisture intrusion is evident Do not touch the Icemaker with hands or tools to confirm the operation of geared motor Do not let the customer repair disassemble or reconstruct the refrigerator for themselves Servicing carries the risk of electric shock fire and other hazards Do not store hazardous materials such as ether benzene alcohol chemicals gas or medicine in the refrigerator Do not put flower vases cups cosmetics chemicals etc or container with fall of liquid on the top of the refrigerator Do not put glass bottles full of liquid into the freezer The contents could freeze and break the glass bottles When scrapping the refrigerator please disconnect the door gasket first and scrap the refrigerator in a location where
110. h the related operations and verifications Error Symptom Chart 1 Monitor does not operate normally Monitor Error Symptom 1 Only LG logo is displayed Monitor Error Symptom 2 Only stripes and white background are displayed Monitor Error Symptom 3 No display at all The touch screen does not work Sound cannot be recorded Camera visual is not displayed Remote Control does not work There is no audio output of sound There is no TV output There is no output of TV sound The sensor for refrigerator errors does not work 122 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms Contents to check Measures Monitor does not operate normally Check functioning of monitor visual output section There is no picture output whatsovever Yes No Y Monitor Error Symptom 3 Monitor Error Symptom 1 Only LG logo is displayed Check input voltage of hard disk connector Yellow 12V Red 5V Yes ls the input voltage normal Yes Check the input output of power supply and replace if abnormal Monitor Error Symptom 2 Only stripes and white background are displayed Yes Check status of 1 Main Cont 2 Monitor 3 TMDS LCD Yes No Monitor Error Symptom 3 ls the connection between Monitor Joint and LCD normal
111. hange The sounds happens when pipes and internal evaporator in the refrigerator compartment expand and contract as the temperature changes during the refrigerator operation This sound also happens during defrosting twice a day when the ice on the evaporator melts Clunk sound Explain that it comes from the compressor when the refrigerator starts When the refrigerator operates the piston and motor in the compressor rotate at 3600RPM This clunk sound is caused by the vibration of motor and piston when they start and finish their operation This phenomena can be compared with that of cars When the car engine ignites and starts to rotate the loud sound quickly becomes quiet When the engine stops it stops with vibration Vibration sound Check whether the sound whether it comes from the pipes vibration and friction Insert bushing or leave a space between pipes to reduce the noise Fix the fan blade if the noise is due to the collision of fan and shroud Fix the drip tray if it is loose Sound depends on the installation location Sound becomes louder if the refrigerator is installed on a wooden floor or near a wooden wall Move it to the another location If the refrigerator is not leveled properly a small vibration can make a loud sound Please adjust the leveling of the refrigerator 87 PROBLEM DIAGNOSIS Problems Checks and Measures Sounds of water flowing Expla
112. he rectifying part BD1 CE1 converting AC voltage to DC voltage the switching part IC2 switching the converted DC voltage transformer transferring energy of the primary side of the switching terminal to the secondary side and the feedback part 103 IC4 transferring control information to the primary side Caution Since high voltage DC310V is maintained at the power terminal please take a measurements after more than 3 minutes have passed after removing power cords in the abnormal operating conditions Voltages of specific test locations are shown Part CE1 CE2 CE3 CE4 CE5 Voltage 230 Vac 310 16 12 15 5 Vde 5 Vde BD1 D3SBA60 1 AS a 10 R3 m E Tes A MICOM T T 560k 450V 7630y 1 8K 1 28 als 12 FBI PRIO7 2 lan 9r FR302 lt 02 2 4 Ri Y T 4 RI x I 33 1 4W 2 A 150 n CE4 6800 JH i D e ihe 25N 5 ib ICA 4 4 KIA431 1 2 8 21 14 Ic2 5 680 L1 2mH STR 5 64 66551 0 7805 55 Voref en cc5 CC6 Hoe 967 3 i 4 mp 104 104 A 104 FUSE ut 1 54 Vos Tam tape 7 zr 26 Test 25 27 43 GND POWER 32 EXPLA
113. he red cap from the filter and attach the sticker Insert the upper part of the filter after aligning with the guideline marked on the control box and fasten it by turning it clockwise by 90 degrees Note Verify that the guideline and the fastening indication line are aligned 2 Replacement of water filter Adhesive Sticker While holding the lower part of the filter turn it counterclockwise D by 90 degrees and pull it down Note Verify that the guideline and the loosening indication line are aligned HOW TO INSTALL REFRIGERATOR 3 How to Control the Amount of Water Supplied to Icemaker 3 1 Verify the amount of water supplied to the Icemaker 1 Pull out the ice bin in the upper part of the freezer compartment Caution Do not put hands or tools into the chute to confirm the operation of geared motor Doing so may damage refrigerator or cause injury to hands Check the operation of motor by its operation noise 2 Apply electricity after connecting water pipe 1 Press test switch under the Icemaker for two seconds as shown below 2 The bell rings ding dong ice tray rotates and water comes out from the Icemaker water tube 3 The water shall be supplied two or three times into the tray The amount of water supplied for each time is small Put a water container under the ice tray and press test switch 4 When ice tray rotates the water in it will spill
114. ilure is displayed the MICOM resets the display to a normal state 4 A failure code is indicated on the LCD displays refrigerator and freezer temperature readouts temperature for the freezing room and the display part of setting temperature for the cold storage room of LCD which are placed at the display part of a refrigerator All the LCD graphics other than a failure code are turned off FILTER STATUS oF Normal Operation Failure code display part Product operation status in failure No Item Setting Setting Symptoms of failure temperature temperature for Compressor jog di room rade Bs for freezing cold storage a an eater motor damper 1 Failure of freezer Er FS Snapping or short circuit of ONfor 15minutes Standard sensor freezer sensor OFF for 15minutes 2 Failure of refrigerator Er rS Snapping or short circuit of O Standard O O Open for 1Omunces sensor 1 refrigerator sensor 1 RPM Closing for 15 minutes 3 Failure of refrigerator Setting temperature Snapping or short circuit of Standard sensor 2 display 2 refrigerator sensor 2 RPM 4 Failure of frost Er dS Snapping or short circuit of frost Standard frost sensor sensor removal 5 Poor offrost Er dH Snapping of frost removal heater Standard
115. in the flow of refrigerant When the refrigerator stops the water flowing sound occurs This sound happens when the liquid or vapor refrigerant flows from the evaporator to the compressor Click sounds Explain the characteristics of moving parts e This noise comes from the controller s switch on the top of the refrigerator when it is turns on and off Noise of Icemaker operation applicable to model with Icemaker Noise produced by ice dropping and hitting ice bin Hiss noise motor sounds Explain the procedure and principles of Icemaker operation Automatic Icemaker repeats the cycle of water supplying gt icemaking gt ejection When water is supplied the water supply valve in the machine room makes sounds like Hiss and water flowing also makes sound When water freezes to ice freezing sounds such as click click are heard When ice is being ejected sounds like Hiss produced by a motor to rotate an ice tray and ice dropping and hitting ice bin sounds are also heard Noise when supplying water Explain the principles of water supplied to dispenser When the water supply button in the dispenser is pressed the water supply valve in the compressor compartment opens and let the water flow to the water tank in the lower part of the refrigerator compartment The water is dispensed by this pressure When this happens motor sound and water flowing sound are heard Noise whe
116. in the ice bin 6 When dispenser cube ice bushing button is pressed dispenser solenoid cube ice solenoid and geared motor work so that cubed ice can be dispensed if there is ice in the ice bin 7 When dispenser water bushing button is pressed water valve opens and water is supplied if water valve is properly installed on the right side of the machine room 8 Ice and water are not available when freezer door is open Conduct Ice Making Control after supplying water into the Icemaker cube mould by operating water valve D Detect if ice bin is full of ice by rotating ice ejection 18 ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD 2 Function of Icemaker 2 1 Initial Control Function 1 When power is initially applied or reapplied after power loss the Icemaker cube mould level is detected after completion of MICOM initialization The detecting lever moves up and down 2 The level of Icemaker cube mould is determined by output signal high and low signal of Hall IC The cube mould is leveled by rotating ice ejection motor in normal or reverse direction The High Low Hall signal is be applied to MICOM Pin No 42 3 If there is no change signals one minute after the geared motor starts to operate it stops Icemaker operation and checks the signal every hour It reinitializes the Icemaker when the feedback signals becomes normal 4 It datermines that the initialization is completed when it senses the
117. ing Pipe icing Too much food is stored and baffle and cool air path pipe after Check defrost After forced Discharging blocks the discharge port dissembling the container box defrosting check ice in the pipe icing Bad defrosting Check icing at intake ports of evaporator and pipes 2 Faulty door or refrigerator compartment Faulty gasket Faulty assembly Check gasket attachment Check door assembly conditions Correct the gasket attachment conditions or replace as necessary Door assembly and replacement Replacement should be done when gasket cannot be repaired 3 Overcooling in the refrigerator compartment Faulty damper in the refrigerator compartment Faulty MICOM faulty sensor See if refrigerator compartment is overcooling when button pressed on weak Check for faulty parts Replace faulty parts 4 Bad defrosting Heater wire is cut Defective defrost sensor Defrosing cycle Check frost on the evaporator after dissembling shroud and fan grille Check for ice on intake port of freezer and refrigerator compartments Check parts related to defrosting Check defrosting Check ice on the evaporator and pipe Moisture does not on the evaporator but is sucked into the refrigerator being condenses and ices with coolain circulation and suppressing sublimation 5 Customers are not familiar with this machine Door
118. interference Disassemble frame display and confirm visually Adjust or replace interfering structures SISONSVIG NI 18O0ud 6 Problems Symptom Causes Checks Measures Remarks Defective Buzzer rings Trouble mode indication Check problem diagnosis function Remedy faults Refer to mode display button but key does indication in function when function button is explanations pressed Bad water ice Buzzer Defective connecting lead wire from Check lead wire associated with door Repair lead wire Check model dispenser continuously rings or door open alarm does not work main PCB to door switch switch Defective freezer compartment door switch parts Refer to door switch in parts repair guide Replace Freezer compartment door switch Ice and water do not dispensed Defective connecting lead wire from Main PCB to lever switch Check Lead Wire associated with lever switch with a tester Repair lead wire with dispenser Defective lever switch parts Refer to door switch in parts repair guide Replace lever switch Defective photo coupler IC parts Check voltage change at photo coupler output terminals when lever switch pressed It is OK if voltage change is from OV 5V Replace photo coupler IC or PCB Defective relay associated with ice dispense geared motor cube and dispenser solenoid Check relay RY9 RY11 RY12 w
119. ith a tester Replace defective relay Defective parts associated with ice dispenser geared motor cube and dispenser solenoid Check resistance of parts with a tester Replace defective parts Defective relay associated with water dispenser Check relay RY10 with a tester Replace defective relay Defective parts associated with water dispenser Check resistance of parts with a tester Replace defective parts SISONSVIG WA18d O0dd PROBLEM DIAGNOSIS 3 Cooling Cycle Heavy Repair 3 1 The Heavy Repair Standards for Refrigerator with R134a Refrigerant NO Items Unit Standards Purposes Remarks 1 Pipe and piping Min Pipe within 1 hour To protect The opening time should be reduced to a half System opening Comp within 10 from of the standards during rain and rainy seasons time minutes Moisture the intrusion of water into the pipe is Drier within 20 Intrusion dangerous minutes 2 Welding Nitrogen Weld under Nitrogen To protect Refit to repair note in each part Pressure atmosphere from oxide R134a refrigerant is more susceptible to 2 pressure 0 1 0 2 scale leaks than R12 and requires more kg cm formation during welding Do not apply force to pipes before and after welding to protect pipe from cracking 3 N2 sealed parts Confirm Confirm air leaking To protect In case of evaporator parts if there is no
120. lems Causes Checks Measures Remarks No power on Power cord cut Check the voltage with tester Reattach the components outlet Faulty connector insertion Check visually Reattach the connecting parts Faulty connection between plug and adapter Check visually Reconnect the connecting parts Fuse blows out Short circuit by wrong connection Low voltage products are connected to high voltage Short circuit caused by insects Electricity leakage High voltage Short circuit of components tracking due to moisture and dust Check the fuse with tester or visually Check the input voltage with tester between power cord and products Check the resistance of power cord with tester if it is 00 it is shorted Find and remove the cause of problem ex short high voltage low voltage Replace with rated fuse Replace with rated fuse after confirm its specification W f fuse blows out frequently locate the cause and remedy Check other parts penetration 2 2 Compressor Problems Causes Checks Measures Remarks Compressor Faulty PTC Check the resistance If resistance is infinite replace it does not Value ee is defective with new one operate If itis not infinite it is normal Compressor is frozen If compressor assembly parts are normal capacitor PTC OLP apply power directly to the compressor to force operatio
121. mber or cold storage chamber the fan motor normally operates at the RPM previously operated A and D of door switch for the freezing chamber or freezer room are connected to the door open sensing circuit in parallel toward both ends of switch to signal which door is open at MICOM Since a door switch of the home bar is connected to door switch C D of the cold storage chamber The circuit senses door opening if either door is opened The fan motor will immediately stop if opening doors of the freezing chamber or cold storage chamber during TEST mode and it immediately restarts upon closing them 1981 AG Refrigerator RG ud Type of Load Compressor Removal Converting LAMP Motor Control Box Pipe Heater Heater Relay Damper Heater Measuring part IC6 No 16 No 15 No 14 No 13 No 14 IC7 No 15 IC7 No 11 IC7 ER ON Within 1 V atus OFF 12V POWER U gt MICOM SON D m paee ora 1 eh 3 3 aum 4 zB L_J RY2 6 UWIOFHN 9 S ASSY 07 F LAM 9 4 4 94004 16 ox 1 2 m F Door e Def HEATER 8 Nic S W kadi ES ear Ulli A FUSE MELTNG nnt 7 o sl lt a ezz a m 5 c CON4 PR BR o DAMPER MOTOR ow M
122. n Auxiliary winding Main winding Power OLP It starts as soon as it is contacted During forced operation Operates Check other parts No operation Replace the frozen compressor with new one weld evacuate and recharge refrigerant Refer to weld repair procedures SISONSVIG NI 18O0ud 79 2 3 Temperature Rotate rotor manually and check rotation Wire is cut Bad terminal contact Check terminal visually Fan constraint Fan shroud contact Confirm visually Fan icing Confirm visually Maintain clearance and remove ice Repair and or replace shroud if fan is constrained by shroud deformation Problems Causes Checks Measures Remarks High Poor cool air circulation due to faulty Lock Check resistance with a Replace fan motor temperature fan motor tester in the freezer 00 short compartment Q cut Reconnect and reinsert Faulty fan motor due to faulty door switch operation Iced button faulty operation Press button to check Faulty button pressure and contact Press button to check operation Door cannot press door switch button Check visually Determine icing cause and repair Replace door switch Door sag fix door Door liner bent replace door or attach sheets Bad heating conditions in compressor compartment Check the clearance between the refrigerator and wall
123. n is disconnected check for fan damage and reassemble it Refer to fan motor disassembly and assembly sequence SISONSVIG WA18d O0dd 19 2 5 Defrosting failure Problems Causes Checks Measures Remarks No defrosting Heater does not generate heat as the heating wire is cut or the circuit is shorted 1 Heating wire is damaged when inserting into the evaporator 2 Lead wire of heater is cut 3 Heating wire at lead wire contacts is cut Check the resistance of heater 00 Short Cut Tens to thousands Q OK 2 Check the resistance between housing terminal and heater surface 00 Short Cut Tens to thousands Short Heating wire is short or wire is cut Parts replacement Refer to parts explanations Seal the lead wire with insulation tape and heat contraction tube if the cut lead wire is accessible to repair Sucking duct and discharging hole are clogged 1 Impurities 2 Ice Confirm foreign materials In case of ice insert the copper line through the hole to check 2 Put hot water into the drain check drains outside 1 Push out impurities by inserting copper wire Turn off for more than 3 hours and pour in hot water if frost is severe 2 Put in hot water to melt down frost 3 Check the water outlet 4 Push the heater plate to sucking duct manually and assemble the disconnected parts Gap between Suction d
124. n supplying ice B Explain the principles of ice supply and procedure of crushed icemaking in a dispenser When ice cube button is pressed ice stored in the ice bin is moved by a Helix Pusher and dispensed If crushed ice button is pressed the cube ice is crushed When this happens ice crushing and hitting ice bin sounds are heard 88 PROBLEM DIAGNOSIS 4 2 Measures for Temperature Related Symptoms Problems Checks and Measures Refrigeration is weak Check temperature set by the temperature control knob lt Refrigerator is generally delivered with the button set at normal use MID But customer can adjust the temperature set depending on preference If you feel the refrigeration is weak then set the temperature control button at strong position If you adjust the setting for the freezer compartment as well the refrigeration is stronger than adjusting refrigerator only The food in the chilled drawer is not frozen but defrosted The chilled drawer does not freeze food Use chilled drawer for storing fresh meat or fish for short periods For storing for a long periods or freezing food use a freezer compartment It is normal that frozen foods thaw above the freezing temperature in the chilled drawer Refrigerator water is not cool Check the water storage location If water is kept in the door rack recommend storing it in the refrigerator compartment shelf It will then be
125. nce of R134a chargine canister in a vacuum conditions to be 5 g with electronic scales andcharge through compressor inlet Charge while compressor operates Weld carefully after pinching off the inlet pipe R134a exclusive chargine canister mass cylinder refrigerant R134a manifold gauge electronic scales punching off flier gas welding machine Check refrigerant leak and cooling capacity Check for leakage at weld joints r Minute leak Use electronic leak detector Big leak Check visually Note Do not use soapy water for check Check cooling capacity Check radiator manually to see if warm Check hot line pipe manually to see if warm Check frost formation on the whole surface of the evaporator Electronic Leak Detector Driver Ruler Compressor compartment and tools arrangemen Remove flux from the silver weld joints with soft brush or wet rag Flux may be the cause of corrosion and leaks Clean R134a exclusive tools and store them in a clean tool box or in their place Copper brush Rag Tool box Transportation installation Installation should be conducted in accordance with the standard installation procedure Leave space of more than 5 cm from the wall for compressor compartment cooling fan mounted model 81 PROBLEM DIAGNOSIS 3 3 Precautions During Heavy Repair Items Precautions 1 Use of tools 1 Use
126. nch off plier after completion of charging 6 Braze the end of a pinched charging pipe with copper brazer and perform a gas leakage test on the welded parts 6 Gas leakage test Take for leaks on the welded or suspicious area with an electronic leakage tester 7 Pipe arrangement Verify that each pipe is placed in its in each cycle original location before closing a cover after completion of work Particularly check the size of Joint Drain Pipe 3 5 Standard Regulations For Heavy Repair 1 Observe the safety precautions for gas handling 2 Use JIG or wet towel in order to prevent electric wires from burning during welding In order to prevent insulation damage and consequent accidents 3 The inner case shall will melt and the insulation material polyurethane shall be damaged if care is not taken during welding of inner case parts 4 The copper piping wil oxidize from overheating if care is not taken during welding 5 Do not allow aluminum and copper pipes to touch In order to prevent corrosion 6 Observe that the inserted length of a capillary tube into a drier should be 12 2 Drier Molecular Pipe 7 Make sure that the inner diameter is not be distorted while cutting a capillary tube 8 Be sure that a suction pipe and a filling tube are not be substituted for each other during welding High efficiency pump 85 PROBLEM DIAGNOSIS 3 6 Brazing Reference Drawing
127. nd bottles make contact on top shelf 4 Refrigerator roof contact 5 Refrigerator side contact 6 Insufficient lubricants on door hinge 60 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 8 Faulty lamp 1 Lamp problem Filament blows out freezer and Glass is broken refrigerator 2 Bad lamp assembly Not inserted compartment Loosened by vibration 9 Faulty internal voltage short 3 Bad lamp socket r Disconnection gt Bad soldering Bad rivet contact Short Water penetration Low water level in tray r Bad elasticity of contact Bad contact corrosion 4 Door switch Defective r Refrigerator and freezer switch is reversed Travel distance r Bad connection Bad terminal contact P U liquid leak 1 Lead wire is damaged Wire damage when assembling PTC Cover Outlet burr in the bottom plate Pressed by cord heater lead wire evaporator pipe 2 Exposed terminal Compressor Compartment terminal Touching other components Freezer compartment terminal Touching evaporator pipe 3 Faulty parts Transformer 1 Coil contacts cover Welded terminal parts contact cover Bad sealing Sheath heater Compressor Bad coil insulation Plate heater Melting fuse Sealing is broken
128. nditions of ice in the ice making tray Therefore exercise caution as water may overflow when operating test function before the water has frozen The water supply function operates with the horizontal balancing operation after ice removal operation Therefore you can check any problem of ice removal operation horizontal operation and water supply In this case if test check returns normal feedback a bell sound rings and water supply control is performed No ringing of the bell sound means failure and repair service must be performed 4 When water supply is completed operation continues in the normal cycle of ice making ice removal returning to horizontal status and water supply 23 MICOM FUNCTION 1 Monitor Panel runc DN C FILTER MII C WATER Li oF cw eode oF TEMP TEMP FILTER STATUS ROOM TEMP 6 UNLOCK H M IL 2 Description of Function 2 1 Funnction of Temperature Selection Division Power Initially On 151 Press 2st Press 3th Press 4th Press H H H H H Setting M M M M M temperature L L L L L Temperature Medium Medium Max Max Min Medium Min Control Freezer Control 19 2 F 22 7 F 23 9 F 15 5 F 17 C 1 F an 3 C 37 F 2 C 35 F 0 C 32 F 6 C 43 F 4 C 39 F The temperature can vary 3 depending on the load condition Whenever pressing button setting cycl
129. nnected 2 Move evaporator closer to Heater Sheath AL 3 Correctly insert connector 4 Moisture intrudes into the pipe through the crack as Heater Sheath AL Pipe and or Silicon Cap are dented Short circuit When the resistance between both connector ends is measured with a tester the resistance is zero or beyond the allowance of marked value allowance marked value 7 4 Replace parts 2 Heater Plate Drain Problem Symptom Checks Measures 1 Heating wire is cut or corroded 2 Poor terminal contact Poor defrost The resistance is infinity when the resistance is measured at both connector ends with a tester The resistance fluctuates very much when the resistance is measured at both connector ends with a tester 1 Replace parts Reconnect if wire is Cut 2 Correctly reinsert the connector 3 Moisture intrudes as the heating wire is damaged by a sharp fin of evaporator Short circuit When the resistance between both connector ends is measured with a tester the resistance is zero or beyond the allowance of marked value allowance marked value 7 3 Replace parts 16 FUNCTIONS AND OPERATION PRINCIPLES OF MAIN PARTS 3 Other Heaters Correspondin Problem Checks Measures Heater 1 Heating wire is Heater Plate The temperature of chilled 1
130. ntact point and the compressor works again after 3 or 5 minutes NOTE Over load protector relay detects temperature and current at the same time It operates when the temperature of compressor is high even there is no current It shall also operates when over current flows even the temperature of compressor is low It is also possible that both high temperature and over current shall operate relays at the same time Current is more effective than temperature Over load protector relay shall operate again if the surface temperature and current of compressor repeats a breach of the threshold values even though the heater is cools down after 3 or 5 minutes of downtime Customer may claim that the relays repeated on and off operation as the temperature remained constant In this case switch off the power and let the compressor cool down fully If the relay malfunctions after this replace it with a new one 3 Positive Temperature Coefficient PTC Starter is connected to auxiliary winding in series and accelerates compressor starting It is located on outer case of compressor with relays Previously the starter was a contact point type but it is now generally a PTC element type PTC stands for positive temperature coefficient and it has a starting value of resistance e g 22 0 It is an element whose resistance becomes infinitive when current flows The starting principles of a single phase induction motor and simple alternating
131. oc UUs Bim CONT BOX R DAMPER HEATER 4 8 15 ox 2 10 H BAR C w DOOR S W R DOOR S W S W oy 1 016 S BL 12 03 HEATER PLATE DISP A 9 o D18 PIPE HEATER He oid 2 14 pos 34 EXPLANATION FOR MICOM CIRCUIT 2 Dispenser operation circuit 6 6 T SS CON3 a MICOM M 9 7 13 4 6 54 AUGER MOTOR E AIN14 1 ALD112 t foo 7 ME pug 5 Li peg Ms 12 4 4 AZ 5 D11 SOLENOID b J Bie n WATER VALVE WATER 1 ALD112 j 8 77 17 Y8 im J 8 7 wa 1 Tos zT PILOT VALVE gt as 16 ott 1 CONS sme ALD112 RA 250VAC n soap 7 Bm DISPENSER 12 ox 2 4 RY14 055 1 5 H BAR HEATER 4 242 po IC8 78 3 Re 112721 4 9 16 bus DISP LAMP 56K 2W X K 190 cos L Ral i 1 Check load driving status WATER VALVE of Load GEARED SOLENOID SOLENOID HOME BAR SOLENOID M
132. ocE476Bv640 EE S 474 450V HWAICE1 1111 6 6630880016 4 202 11 04 EUN CON1 52 106097321850 apa 473 630 SEN 5 7 53 0002241N630 224 100 sEIL 4 1 1 6630880017 EMT P RD CON5 54 0Ck22102510 ceR CAPACTOR 221 2KV cc2 1 1 9 66304880010 T0248 CON3 55 OCK47IDK96A 471 50V cci 1 1 10 166300880076 W REN 917786 1 8P CONG D D 104 50V SAM HWAICC5 16 21 3d 1 1 11 917787 1 9 CONB OCK102DK9BA 102 50 CC18 20 1 12 66304880077 917788 1 10 CON9 mE 223 50V locF33408670 1 1 1 13 6630BBoorL sro MP conz 530nF 275VAC CM 14 6630JB8007K 917789 1 11P FILM CAPACITOR FNR PILKOR 2 111 1 077 820108 15 PIZB2010A com cHIPITMPB7CB41N TOSHIBA 0855602 600 56K 2W R3 9 E KIA78005AP K E C 16 0KE7805002 REGULATOR Ics 08515031609 150K 1W R OXIDE FILM 17 okes 7042 08501014609 A ss OKESSOOSOG KIDBSOOSAFIK EC 67 68J 1 2W ero 620J 1 2W R39 46 19 560K 1 2W R2 330 1 4W R38 45 1 1 20 0RH622200A DRIVE IC BAG222 ROHM IC10 680 1 4W RE 1 1 21 0SK655100ADRIVE STR G6551 SANKEN IC2 1 1 22 0KE431000A v REGULATOR A 4 31 K E C IC4 1 8K 1 4W R7 1 1 IC3 23010721000 PHOTO TRITLP 7 21 111 IC8 RCARBON 1 4 W 20090 R27 34 40 2 2 24 6920 82007 VSB 12TB UAMSAM RY1 3 108020010609 R47 50 52 59 2 2 6920820
133. onnect to Internet network cable LAN connecting cable 1 Contol TV tuner TV tuner COM2 External Device Communication Port 2 Extended connecting cable IDE Hard disk data communication Hard disk ATX POWER Main controller power service line Power supply PARALLEL PORT Sub controller communication Sub controller POWER SW Sub controller power supply Reset management S W input Reset PCB sub controller SOUND OUT Audio output Sub controller 9 CDIN External audio input reserve terminal Reserve terminal TV SOUND IN TV sound input TV tuner MIC IN sound input MIC connector KEYBOARD Connect to keyboard for SVC Keyboard SVC TMDS Monitor visual output TMDS connector TOUCH INV T Screen communication LCD inverter power supply T Screen connector TV TUNER TV Tuner data communication TV Tuner VIDEO IN External video input reserve terminal Reserve terminal eG CCD IN Camera visual input Camera connector TVIN TV visual input 3025 TV Tuner DIGITAL PARTS MANUAL 1 4 Specifications of parts 1 Main CPU SPEC 1 Maker Type Geode GX1 300 B85 2 Maker National Semiconductor 3 L1 Cache Size 16KB 4 CPU Power Consumption 1 6V 200MHz 0 8W 2 0V 300Mhz 1 5W 5
134. ontents to check Measures The touch screen does not work Check operation oftouch screen Check power input of touch screen controller LED location behind touch screen controller of the monitor section Is the touch screen controller LED lighted No Is the touch Yes Screen controller input voltage normal refer to VO Structure sihe output voltage Check Main Cont power of Sub switch connector normal DC5V and reconnect Check Monitor Joint gt Touch Connector and reconnect gt Replace Touch Cont Reinitialize power of digital section and when en No gt checking operation if LED er second goes out abnormally replace Touch Cont Yes After checking the connection When kN ofthe touch panel section lighted state or Baches No ifthere are stil issues after ofthe LED change reconnecting replace about twice per touch panel refer to touch second connection diagram Is the Monitor Check connection by Joint section No referring to the touch screen connection normal connection diagram ie n T and reconnect structure Yes Reconnect Touch Inv in the Main Cont section and if it still does not work replace Main Cont 125 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION Error Symptoms Contents to check Measures Sound
135. ound Out P1 connector normal Yes Reconnect the Main Cont and TV Sound In Connector Reconnect TV Tuner and Sound Out P1 connector refer to structure If same symptom occurs after replacing TV Tuner replace Main Cont The sensor for refrigerator errors does not work Check the self diagnosis function of the refrigerator Check the connection of the refrigerator error sensor connector Is the connection of the refrigerator MICOM No error sensor communication connector No is O normal refer to NO Reconnect refrigerator MICOM error sensor communication connector Reconnect Sub Cont CON2 If same symptom occurs after replacing Sub Cont replace Main Cont and refrigerator MICOM 130 EXTERNAL EXTENSION PORT 1 EXTERNAL EXTENSION PORT LI mm TV LAN REF POWER USB1 USB2 1 1 Connect to cable TV 1 2 LAN Connect Internet network cable 1 3 USB1 2 Connect a keyboard when updating or revising programs in the digital section of the internet refrigerator To use an Internet network cable install the additional software provided by ISP Internet Service Provider Software Installation Method 1 Connect a USB Type CD ROM to USB port 1 2 Reboot the digital section b
136. ove the remaining refrigerant and recharge new refrigerant Drier must be replaced SISONDVIA WI1I04d 99 Problems Causes Checks Measures Remarks High temperature in the freezer compartment Cycle pipe is clogged Check sequence 1 Check temperature of condenser manually If it is warm it is OK If it is not compressor discharging joints might be clogged 2 Manually check whether hot line pipe is warm If it is warm it s OK If it is not condenser outlet weld joints might be clogged Heat up compressor discharging weld joints by contact disconnect the pipes and check for clogging Remove the cause of clogging weld evacuate and recharge the refrigerant If it s warm it s OK If it s not condenser discharging line weld joints might be clogged Disconnect with torch remove the causes evacuate and recharge and seal refrigerant Direr must be replaced Leak at loop pipe weld joint discharge in compressor Check sequence 1 Manually check whether condenser is warm If it is warm or hot it is OK If it is cool proceed with repair Replace the compressor weld evacuate and recharge refrigerant Drier must be replaced Faulty cooling fan in the compressor compartment Check sequence 1 Check cooling fan operation 2 Check that cooling fan is disconnected from the motor Replace if motor does not operate If fa
137. ow to store foods Condensation forms when refrigerator is installed at damp area door is frequently opened and wet foods are not stored in the air tight container or wrapped Be sure to store wet foods in the air tight container or in secure wrapping When is the power connected When should the power be connected 2 You can connect the power right after the installation But if the refrigerator was laid flat during transportation for a long period of time then the refrigerant and compressor oils are mixed up and this will affect badly the performance of the refrigerator Be sure to connect the power 2 3 hours after refrigerator is installed Door does not open properly The front side should be raised a little bit higher than the rear side Refrigerator compartment door does not open properly When the door is open warm open air comes into the compartment and is mixed up with cool air This mixed air shall be compressed and increases the internal pressure when door is closed This causes the door to more closely adhere to the refrigerator in a moment As the refrigerator guins use this symptom will diminish When the refrigerator compartment door is opened and closed the freezer compartment door moves up and down When the refrigerator compartment door is opened or closed fresh air comes into the freezer compartment and moves up and down the freezer compartment door Door opens too easily
138. ower POWER S W IDE HARDDISK E 1 1 4 ow Beton Bg Ind GND 2 2 Bk 1121314151617 8 9hoh if 2 sp sn ep 71 sh 5 7 Ic 1 SNO i i 11213141516 7 8 8 of 19 2h 3p ah sheh 7 ah sok 1E 2p 3p app ep 7E 0 FTIIT Ac POWER NO 33 5 520 212 3 3 6 6180 3 3 POWER IN N 5v 7 75 nir 5v 8 BH 51 5 5v 9 9HE GND 10 67 SAA nn GND 2 2 58 GND 3 13 86 i GND fal BK YL Im GND jis 15 KH 12V 5V fel he GND 7 18 33 HARDDISK 3 3V ha Ee 44 5 i GND 19 5V 20 RD 5v 21 BIT GND 192 12V 5v P4 t A 99
139. r supplied to the Icemaker needs to adjusted Contact the service center If ice is not used frequently it may freeze together Power failure ce may drop into the freezer compartment Take the ice storage bin out and discard all the ice Then dry it and place it back in its position After the machine is powered again crushed ice will be automatically selected The unit is newly installed It takes about 12 hours for a newly installed refrigerator to make ice in the freezer compartment 2 8 Super freezer Please select this function for prompt freezing On or Off cycles whenever pressing SUPER FRZ button The graphic indicator remains in the On status after flickering 4 times when selecting Special Refrigeration On Super freezer function automatically turns off after a fixed time passes 2 9 Lock This button prevents use of a different button At initial Power on the control panel is unlocked Lock or Release cycles whenever pressing the LOCK CONTROL Pressing another button while the panel is locked will yield no results 2 10 Super freezing 1 Super freezing is a function to improve cooling speed of the freezing chamber by consecutively operating compressors and freezing room fan Pressing the super freezing button toggles the Super Freezer feature on and off when the feature turns on the graphic remains after blinking once Super freezing is cycles in order of Selection Release Turn On Turn Of
140. refrigerator doors temperature of en 5 1 2 10 1 4 5 amp defrost sensor is POWER sec DEFROST sec DEFROST sec HOME sec below 45 C 113F gt HEATER gt HEATER gt HEATER N HEATER 2 during power loss ON ON OFF ON OFF 2 and servicing D VEGETABLE VEGETABLE E HEATER EN HEATER an COMP a FAN DAMPER DAMPER gt DAMPER HEATER HEATER ON ON OFF Tesi Mode 1 If switch is once 1 4 1 4 1 4 more pressed or the Forced Starting TEST OTHER sec COMP sec sec MOTOR temperature of ET S W gt LOAD gt gt High Speed gt DAMPER defrost sensor is m Press OFF ON ON ON above 5 C 41 F in test mode 2 it returns to test mode and starts initial o TestMode 2 drive compressor 1 4 1 4 1 4 will start after seven E Fore Bares TEST comp 14 FAN 1 MOTOR SW gt HEATER gt DAMPER Press OFF OFF ON ON Twice 28 MICOM FUNCTION 2 18 Failure Diagnosis Function 1 Failure diagnosis function is a function to facilitate servicing when improper operation of the product occurs 2 The user will notice a failure when pressing one of the function buttons yields no consequent effect beyond the audible Ding 3 If the improper operation ceases while a fa
141. rii zz REF ERR P3 i KS SESE SREB 22222222 55595558 BE CONT REF ERR P2 2 2 0 12 5 88 85 BK REF ERR P1 3 5180 85 55 33 1 1 POWER IN L 126 15S 58 LAN USB 2112 REF ERR PO 5 5 f 8 N C PS_OK 3 3 POWER IN N 5V IN 6 6 08 19 9 5 STANDBY N C Bo 19 0 12V CONG e Uu CENG exav 1 GND CONS 12 2 POWER NI BL GND BN 5 2 SOUND R OUT 1 LSB POWER ON BK tz Kl TXD_ENABLE 2 218 15 005 GND cso 3 BEH Bk 4 4 SOUND L OUT s1 4 2171 1717 GND WH CON4 DATA O 5 BEH 18 19 Sv 1 EN fT T SOUND L IN SAW DATA 1 8 180 eo bd EBEN Main Cont Rp 2 2 GND DATA 2 7 ziel Boll 3 SOUND L IN S W DATA 3 8 Bii NZ 2 DATA 0 4 SOUND R IN SAW DATA 4 9 01084 3 5 1 Geode G 13 5 GND DATA 5 0 101801 WE DATA 2 T6 6 SOUND R IN S W DATA 6 7 18 cw el 5 3 7 H Bo 18 6 DATA 4 EN ne t WHY SOUND R IN we BB DAT BK GND DATA 7 PARALLEL PORT 2213 8 SOUND L IN 5 IN 1 X rallia CND 2 2 Bk 5 dro ENABLE 5V IN 3 BEK ian 0 GND 4 8 ig 8 GND REMOCON SIG IN 5 5 4 et SEAE a SEN 25 12V 21 2 GND 3 3 5V 4 4 GND 5 P
142. roller 9 2 Outline Diagram and INPUT OUTPUT Structure 9 2 1 Outline Diagram FACTORY JUMPER SETTING 0 IN J7 OUT J07J6 J8 PIN REMOVED PHILIPS P4 OE OUO CIO 84 76 GND N 121545 pasan 1 INDIDTR TXDRX 2 5mm Pitch Angle type 1988142 5 Double Line Header Conn e WT oH A TUTI A MOLEX 6373 5 MOLEX 6375 2 9 2 2 INPUT OUTPUT Structure CONNECTOR PINNO INPUT OUTPUT SYMBOL DESCRIPTION Data Carrier Detect Data Sct Ready Receive Data Ready To Send Transmit Data Clear To Send Data Terminal Ready N C Ground PIN REMOVED DC 5V Ground A 116 DIGITAL PARTS MANUAL 9 3 Connecting Method of Connector upon Replacement 9 4 Specification of parts 1 Operating Voltage DC 5V 10 2 Operating Current 160mA Peak 240mA 117
143. s PIPE ASSEMBLY HOT LINE PIPE ASSEMBLY HOT LINE Freezer Refrigerator Copper Brazer Copper Brazer GC TUBE DRIER ASSEMBLY Brazer PIPE ASSEMBLY SUCTION PIPE ASSEMBLY JOINT Copper Brazer Silver Brazer PIPE ASSEMBLY CONDENSER ASSEMBLY WIRE JOINT Copper Brazer Coppper Brazer Silver Brazer Copper Brazer 2075 86 PROBLEM DIAGNOSIS 4 HOW TO DEAL WITH CLAIMS 4 1 Sound Problems Checks and Measures Hiss sounds E Explain general principles of sounds All refrigerator when functioning properly have normal operating sound The compressor and fan produce sounds There is a fan in the freezer compartment which blows cool air to freezer and refrigerator compartments Hiss sounds are heard when the air passes through the narrow holes into the freezer and refrigerator compartments Cooling Fan sound in the compressor compartment lt There is a fan on the back of the refrigerator which cools the compressor compartment If there is a small space between the refrigerator and the wall the air circulation sounds may be noticeable Noise of Compressor This operating sound happens when the compressor compresses the refrigerant The compressor rotates at 3600RPM The sound of compressor operation becomes louder as the refrigerator capacity increases Click sounds Explain the principles of temperature c
144. s open it will continue to show even after rebooting Reboot using the rebooting menu in the Windows system Starting HDD Sheriff Protection Mode Starting Windows 98 Close after checking normal entry 51212 TROUBLESHOOTING FOR THE DIGITAL FUNCTION SECTION 1 TROUBLESHOOTING FOR THE DIGITAL FUNCTIONS SECTION This section s purpose is for finding causes and taking measures by checking related functions when there is something wrong with the digital function section The way to use this is to determine the real error through matching the symptoms with the Error Diagnosis Flow Chart and taking measures according to the chart How to read the Translation Flow Chart Error Symptoms Contents to check Measures Error Error Translation Symptom A Operation 1 TP No 3 Verification 1 Operation 2 Operation 3 Verification 2 Measure 1 2 Verification 3 Measure 3 1 Select a symptom closest to the present current error Error Symptom 2 According to the selected error symptom translate and take measures according to Steps 1 2 3 4 5 3 The progress should be done from top to bottom from left to right 4 Move in the direction of Yes or No at the verification stage and proceed accordingly 5 Repeat this method until you reach a measure that solves the cause and go throug
145. s to a high pressure Lubricants are sealed in the compressor to a accelerate cooling and lubricate compressor Low pressure refrigerant is distributed through the entire compressor but high pressure refrigerant gathers around outer cooling plate through the outlet pipe NOTE A replacement compressor for service is full of nitrogen gas and sealed with rubber when it is delivered This is to protect oxidation and to prevent the intrusion of moisture into the compressor When bushing seals are removed nitrogen gas shall rush out producing noise This is normal If the nitrogen gas was leaked out the compressor may be corroded and should not be used Compressor should be protected from impact during transportation or storage to prevent eccentricity of motor axis 2 Over Load Protector Over load protector relay protects motor by breaking circuits when temperature rises and excess current flows in the compressor It consists of bimetal element and heater Bimetal element defroms when temperature rises and heater emits heat when over current flows This relay is mounted on the outer surface of compressor and senses temperature of compressor This relay is connected to the compressor motor in series When operating contact point of bimetal comes off from fixed contacting point over load protector relay breaks circuit When the temperature of compressor lowers and the heater cools the operating contact points move back to the fixed co
146. se material Ammonia Terminal is corroded Water penetration Bad terminal contact r Wire is cut Heating wire Contact point between heating and electric wire r Dent by fin evaporator Poor terminal contacts heater Wire is cut Lead wire Heating wire Contact point between heating and electric wire Heating wire is corroded Water penetration Bad terminal connection Melting fuse The fuse blows out Paraffin melted Welding flame Bad terminal contact W Check visually Check terminal Conduction OK No conduction NG If wire is not cut refer to resistance P Power V Voltage R Resistance p 55 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 3 Refrigeration is weak r Residual Weak heat from heater Sheath Heater rated frost cord L rated Bad heater assembly Heater plate No contact to drain Loosened stopper cord Heater cord L Not contact to the evaporator pipe Location of assembly top and middle H Too short defrosting time Defrost Sensor Fauliy characteristics Seat D missing location thickness Structural fault Gasket gap Air inflow through the fan motor Bad insulation of case door _ No automatic defrosting Defrost does not return 3
147. second a back light is turns on and all display LCD graphics turn on On releasing the button the LCD graphic displays the previous status and the back light is turns off LCD graphic and back light ON OFF check lt TEST MODE 1 LCD STATUS gt rc C C wel IT mes Tate er TT F TEMP TEMP FILTER STATUS ROOM TEMP ax es CUBED LOCK A uu puc V OFF CRUSHED lt TEST MODE 2 LCD STATUS gt gt UNLOCK 2 20 Function of built in ice dispenser and water dispenser built in 1 2 This function allows dispensing of ice and water to come outside without opening door If pressing the dispenser switch bushing button after selecting ice cubed or crushed or water ice or water equivalent to each come out accordingly However the duct doors are opened by an electrical solenoid valve Duct Door Solenoid if when pressing the dispenser switch for ICE selection After pressing the dispenser press switch and releasing it the duct door closes after it is opened for 5 seconds Dispensing ice and water stops if freezing chamber door is opened If there is no Off signal even when 3 minutes have passed while pressing the dispenser press switch after selecting ice cubed or crushed or water geared motor and solenoid Cube Water is automatically turned off However the solenoid duct door stops 5 seconds after Off to prevent short
148. ssembly Note When disconnecting refrigerator door turn hinge lever counterclockwise If hinge lever or bracket hinge pin is deformed during assembling freezer and refrigerator doors attach two screws Tap Tite Screw M6 Lower fixing screw in the hole of upper hinge 92 HOW DISASSEMBLE AND 2 HANDLE 1 Disconnect by using Hexagon Wrench Dirver 2 Disconnect Handle 3 Disconnect Holder by using Hexagon wrench Driver Ca Wrench Holder Driver Handre Holder 3 DEODORIZER 1 Loosen the screw 1 2 Pull out a deodorant cover forward Fig 1 while turning a cover in arrow direction 3 Take out a deodorizer carefully after opening hook in arrow direction Fig 2 4 Assembly is the reverse order of disassembly Note Be sure to attach the aluminum plate of defrost heater to the floor of intake before assembling 2 lt Fig 2 gt 4 SHROUD GRILLE FAN 1 Loosen two screws after disconnecting a cap screw of a grille fan U with a blade screwdriver 2 Disassembly of a grille fan U Pull forward after opening hook at gt part with a blade screwdriver 3 Disconnect housing of a grille fan L from the main body 4 Disassembly of a grille fan L Hold upper part of a grille fan L and pull forward carefully 5 Loosen two screws 6 Disassembly of shroud
149. t by forced defrosting 3 the heater plate Bad cool air inflow and discharge and bad defrosting due to faulty contact and insertion bad connector insertion into housing of heater melting fuse and motor fan k Turn on power open or close the door check that motor fan operates If it operates motor fan is OK 2 Disconnect parts in the refrigerator compartment check the connection around the housing visually defrost and confirm heat generation on the heater Do not put hands on the sheath heater 3 Check the parts which have faults described in 1 2 mechanical model disconnect thermostat from the assembly 1 Check the faulty connector of housing and reassemble incorrectly assembled parts 2 If the parts are very damaged remove the parts and replace it with a new one SISONSVIG WA18d O0dd 69 2 6 Icing freezer and refrigerator compartment Problems Causes Checks Measures Remarks Icing in the 1 Bad circulation of cool air Verify the food is stored properly Be acquainted with proper use Check the defrost refrigerator Clogged intake port in the see it discharge and intake port Seal on connecting parts related parts if problem compartment refrigerator compartment are blocked Check the damper and replace is caused by faulty Damper icing Seal is not good Check icing on the surface of it if it has defects defrost
150. t more than 5 minutes later after turning off the refrigerator Otherwise compressor oil may leak inside 2 Remove retained refrigerant slowly by cutting first high pressure side drier part with a nipper followed by cutting the low pressure side 2 Nitrogen blowing welding Evaporator NOTE Welding without nitrogen blowing produces oxidized scales inside a pipe which affect on performance and reliability of a product Refrigen Intake When replacing a drier Weld 1 and parts by blowing nitrogen 0 1 0 2kg cmz2 to high pressure side after assembling a drier When replacing a compressor Weld parts by blowing nitrogen to the low pressure side Note For other parts nitrogen blowing is not necessary because not all welding is performed for a long enough time to produce oxidation scales 3 Replacement of drier NOTE Be sure to check the inserted length of capillary tube when it is inserted too much is inserted the capillary tube is blocked by a filter Filter Inserting a capillary tube Measure distance with a ruler and put a mark 12 0 on the capillary tube Insert tube to the mark and weld it 83 PROBLEM DIAGNOSIS Items Precautions 4 Vacuum degassing Evaporator Suction pipe Compressor Condenser Low pressure High Blue pressure Yellow Red NOTE If power is applied during vacuum degassing
151. tay fresh in the refrigerator compartment 6 SUCTION PIPE Connects evaporator and compressor LOW PRESSURE gt LOW PRESSURE GAS 0 kg cm GAS 0 kg cm TEMP 27 C 17 F TEMP 30 C 86 F NOTE The pressure of refrigerant changes from high to low at capillary tube outlet The low pressure refrigerant rushes into the evaporator inlet and makes noise When low pressure liquid refrigerant evaporates in the evaporator evaporation takes place in the entire evaporator from inlet to outlet When this occurs noise may sometimes occur Noise depends on the amount of evaporation so that noise may or may not occur This is not a problem 3 Containing refrigerant and foaming agent Refrigerant Characteristics ODP GWP Remarks Cyclo Pentane It does not contain chlorine which depletes ozone layer 0 8 Foaming Agent C5H10 Its GWP is almost zero Pollution free foaming agent R134a It does not contain chlorine which depletes ozone layer 8 1200 Refrigerant HFC 134a Its GWP is also very low compared with that of R12 GWP 15 300 ODP Ozone Depletion Index relative value based on CFC11 as 1 0 GWP Globe Warmth Index relative value based on CO as 1 0 11 FUNCTIONS AND OPERATION PRINCIPLES OF MAIN PARTS 1 Compressor Reciprocating Type Piston Motor Spring lubricant The compressor consists of a piston and motor The motor pushes piston and piston which compresses refrigerant ga
152. tion Leave it in the air Moisture penetration into the refrigeration oil Short pipe insert WEG Pipe gaps Too large clogged Damaged pipes Too much solder capillary tube inserted too far Drier cloggeing Capillary tube melts Over heat Clogged with foreign materials Desiccant powder Weld oxides Drier angle Reduced cross section by cutting Squeezed Compressor cap is disconnected Foreign material clogging Foreign materials are in the pipe W Check the clogged evaporator by heating as soon as the cracking sound begins the evaporator starts freezing E The evaporator does not cool from the beginnig no evidece of moisture attached The evaporator is the same as before even heat is applied 54 PROBLEM DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 3 Refrigeration is weak 1 Refrigerant Partly leaked Weld joint leak Parts leak 2 Poor defrosting capacity r Drain path pipe clogged generate heat m Inject P U into drain hose Inject through the hole Seal with drain Foreign materials P U lump input penetration Screw input Other foreign materials input Defrost heater does not Parts Drain cap is not disconnected Defrost thermo stat disconnected r Plate heater Cord Thermostat is cut Bad caulking connection Ba
153. ture CONNECTOR SYMBOL DESCRIPTION GND GND Output AUDIO LEFT OUTPUT Output AUDIO RIGHT OUTPUT GND GND Input POWER Input GND TKD Input GND Output TV VIDEO Signal Output 4 3 Specifications of parts 1 Operating Environment Operating temperature 10 C 14 F 60 C 140 F Operating humidity 0 95 under 35 C 95 F condition 2 Storage Environment Storage temperature 25 C 13 F 85 C 185 F Storage humidity 95 under 35 C 95 F condition 109 DIGITAL MANUAL 5 POWER SUPPLY 5 1 Function This is the power supplying section for driving the main controller and hard disk 5 2 Outline Diagram and INPUT OUTPUT Structure 5 2 1 Outline Diagram Section D ar N 5 B 99 ISN9 AC POWER IN i AP o m uou pie 07 Connect to ae 65 1 ISH Section A Section E gt 92 5 24 u 22
154. uct and Heater plate Ice in the gap 1 Check in the Suction duct 1 Turn off the power confirm presence of impurities and ice in the gap and supply hot water until the ice in the gap melts down 2 Push the Heater plate to drain bottom with hand and assemble the disconnected parts Wrong heater rating or wrong assembly 1 Check heater label 2 Confirm the capacity after substituting the resistance value into the formula P _V V Rated voltage of user country M Resistance of tester O Compare P and level capacity Tolerance 7 Faults replace How to replace Refer to main parts SISONSVIG NI 18O0ud 89 Problems Causes Checks Measures Remarks No defrosting Melting fuse blows out 1 Lead wire is cut 2 Bad soldering Check melting fuse with tester 00 OK If Q wire is cut Faullty parts parts replacement Check wire color when measuring resistance with a tester Ice in the Suction duct 1 Icing by foreign materials in the duct 2 Icing by cool air inflow through the gap of heater plate 3 Icing by the gap of heater plate 1 Check the inner duct with mirror 2 Check by inserting soft copper wire into the duct soft and thin copper not to damage heating wire 1 Turn power off 2 Raise the front side door side support the front side legs and let the ice melt naturally If power is on melt the fros
155. upplying time This happens when too much water is supplied into the ice tray eg change 5 to 4 5 seconds Caution When adjusting the amount of water supplied adjust in small increments Otherwise the water may spill over ON Switch ON Switch OFF 2 PWB PCB Assembly 3 When adjustment of control switch for the amount of water supplied is complete check the level of water in the ice tray PLI iii LEE s lt 2 4 2 7 N ed wae Optimum level NG e COOLING CYCLE AND REFRIGERANT 1 Cooling Cycle Cooling Principles Refrigerant Gas Circulation 1 1 Principles of cooling cycle Cooling is an operation by which the temperature of a unit is maintained below the ambient temperature For the cooling operation there must be an insulated space the refrigerant R134a to absorb heat in the space and a refrigerant circulation system including a compressor condenser evaporator etc to conduct phase transformation of the refrigerant 1 2 Refrigerant gas circulation Compressor Wire Condenser 8 Hot Line Freezer Compartment Hot Line Refrigerator Compartment Drier Capillary Tube Evaporator Suction Pipe 9 Cooling Fan M NAN N N NN NN 57 4 AAACN SS ANWR ES ANNU UYU Ss NN UNNNNN AN
156. ut Power 12W 2 lamps total Input Signal Voltage 0 3V 6 0V 5 Operating Environment Operating temperature 0 C 32 F 60 C 140 F Operating humidity 10 85 6 Storage Environment Storage temperature 30 C 22 F 80 C 176 F 114 DIGITAL PARTS MANUAL 8 TOUCH SCREEN 8 1 Function Transmits the coordinates from the contact on the touch screen to the touch screen controller 8 2 Outline Diagram 556 3 2 310 450 13 ACTIVE AREA 88586 4 pe mastic A Q a AMP 487410 4 SIGNAL 265 252 IMN a A UI TA VIEW C 8 3 Specifications of parts 1 Touch Panel SPEC 15 17 Analog Resistive 5 line resistance film type Operating Voltage DC 5V Resolution 4 096 X 4 096 line Activation Force 57 113g Surface Hardness 2 Operating Environment Operating Temperature 10 C 14 F 50 C 122 F Operating humidity 0 90 under 35 C condition 3 Storage Environment Storage Temperature 40 C 40 F 71 160 F Storage Humidity 240 hours in 90 under 35 C 95 F condition 115 DIGITAL PARTS MANUAL 9 TOUCH CONTROLLER 9 1 Function After receiving and processing the touch coordinates from the touch screen it transmits this information to the main cont
157. ut into a freezer compartment the water evaporates cool air fan operates the moisture attached to the jaw protruded part of ice mold will freeze and form frost If warm water was put into the ice mould the situation will become worse 90 PROBLEM DIAGNOSIS 4 4 Others Problems Checks and Measures The refrigerator case 1 hot Explain the principles of radiator The radiator pipes are installed in the refrigerator case and partition plate between the refrigerator and the freezer compartment in order to prevent condensation formation Particularly in summer or after installation of refrigerator it may feel hot but this is normal If there is not enough space to dissipate heat the case may be hotter due to lack of heat radiation Please install the refrigerator in a well ventilated place and leave a clearance between refrigerator and wall Small holes in a door liner Bi Explain that the hole is for releasing gas A small hole in the door liner is for releasing gas during insulation materials lining work With a release hole forming can be easily accomplished Electric bills are too expensive Check the use conditions Excessive door opening and hot food storage cause the compressor to operate continuously and increase the electric consumption and bills Condensation on the inside wall of the refrigerator compartment and the cover of properly vegetable drawer Explain h
158. uttons do not function during test mode but only warning sound rings 4 Upon test mode completion always pull the power cord out and then plug in it again to reset to normal operation 5 If misoperations contents such as sensor failure are found during performance of test mode release the test mode and note the failure code 6 pressing the test button is pressed during a failure code display test mode will not be activated Mode Manipulation Content Remarks Test 1 Press TEST switch once 1 Continuous operation of compressor Freezing room fan is 2 Continuous operation of freezing chamber turned off in door open fan high speed RPM and M C chamber fan 3 Frost removal heater OFF 4 Full opening status baffle opened status of electronic step motor damper 5 All display LCD graphics ON Test 2 Press TEST switch once at 1 Compressor OFF 1 condition 2 Freezing chamber fan and M C chamber fans are turned off 3 Frost removal heater ON 4 Full closing status baffle closed status of electronic step motor damper 5 All display LCD graphics OFF A Medium status B Medium status Only LCD is turned on Normal Press TEST switch once at Return to the initial status Compressor is operates condition TEST2 condition after 7 minutes 30 MICOM FUNCTION LCD check function If simultaneously pressing special freezing button and cold temperature adjustment button for a
159. y pushing the reset switch 3 Enter the hard disk safety device in the supervisor mode 1 4 COMI Use when connecting the home network device 1 5 COM2 Use when connecting external modem 1 6 REF POWER Use when refrigerator power is off 2121 4 The CD ROM drive is set as drive in the Windows Explorer Carry out the software addition work HOW DISASSEMBLE AND ASSEMBLE DIGITAL SECTION 1 TOP COVER PART 1 1 Main Controller Part Unscrew two point e Disassemble after disconnecting Main Controller connections 1 16 1 2 Sub Controller Deco Case Part e Disassemble after disconnecting 1 7 132 HOW DISASSEMBLE AND ASSEMBLE DIGITAL SECTION 1 3 TV Tuner Part e Disassemble after disconnecting 1 4 68 88 88766 1999 99 8 Oo

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