Kenmore 795.71012.010 Service Manual Download Page 30 | Manualshive

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8-2 PCB FUNCTION

8-2-1 Power Circuit

The secondary part of the TRANSFORMER is composed of the power supply for the display, the BLDC FAN Motor drive
(15.5 V), the relay drive (12 Vdc) and the MICOM and IC (5 Vdc).
The voltage for each part is as follows:

# VA1 is a part for preventing over voltage and noise. When 385V or higher power is applied, the inside elements are

short-circuited and broken, resulting in blowout of the fuse in order to protect the elements of the secondary part of the
TRANSFORMER.

PART

VOLTAGE

VA 1

115 Vac

CE 3

12 Vdc

CE 4

15.5 Vdc

CE 5

5 V

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Summary of Contents for 795.71012.010

Page 1: ...CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL Model s REFRIGERATOR SERVICE MANUAL 795 71012 010 795 71013 010 795 71014 010 795 71016 010 795 71019 010 P No MFL63293901 ...

Page 2: ...T DIAGRAM 15 6 TROUBLESHOOTING 16 20 COMPRESSOR AND ELECTRIC COMPONENTS 16 OTHER ELECTRICAL COMPONENTS 17 SERVICE DIAGNOSIS CHART 18 REFRIGERATION CYCLE 19 20 7 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 21 24 8 DESCRIPTION OF FUNCTION CIRCUIT OF MICOM 25 37 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator 1 Unplug the power before handling an...

Page 3: ...g 0CZZJB2012J 0CZZJB2014L Compressor Hi Side TCA34638901 Evaporator Lo Side 5421JJ1003B Condenser ACG72915203 Dryer 5851JA2008U Condenser Fan Motor 4681JB1029D Temperature Control EBR65770301 Main Control EBR52304408 25cu ft 795 71012 010 795 71013 010 795 71014 010 795 71016 010 795 71019 010 1 8 AIR FLOW CIRCULATION D AIR 1 3 ELECTRICAL SPECIFICATIONS Temperature Control Freezer Compartment 6 F ...

Page 4: ...h Total with Door Open Height to Top of Case Height to Top of Door Hinge Width Width door open 90 deg w o handle Width door open 90 deg w handle A B C D E F G H I 34 1 4 in 31 3 4 in 27 7 8 in 46 1 2 in 68 3 8 in 69 3 4 in 35 3 4 in 39 1 4 in 44 1 4 in Description 795 710 ...

Page 5: ...ilter Divider Modular Door Bins Modular Door Bins Pull Out Drawer Refrigerator Light Refrigerator Shelves Door Bins Humidity Controlled Crisper Water Tank Cover Wide Pantry Drawer AUTOMATIC ICEMAKER Ice Bin Freezer Drawer Bin Divider ...

Page 6: ...oors Open the door Remove the top hinge cover screw 1 Use a flat head screwdriver to pry back the hooks not shown on the front underside of the cover 2 Lift up the cover Remove the cover Pull out the tube 3 Disconnect all the wire harnesses 4 Remove the grounding screw 5 Rotate hinge lever 6 counterclockwise Lift the top hinge 7 free of the hinge lever latch 8 IMPORTANT When lifting the hinge free...

Page 7: ...et clips 1 Insert gasket bracket edge beneath door frame edge 2 Turn upper gasket bracket spring so that the spring ends are in the door channel 3 Push in clip until you hear it snap securely into place Figure 4 Correct Incorrect Gasket Bracket Clip Spring Door Frame Figure 5 Correct Incorrect 4 Push in remaining two clips until you hear each snap securely into place Note Make sure that no part of...

Page 8: ...ispenser Figure 8 Figure 9 Figure 10 2 Pry off cover dispenser Disconnect wire harness 3 Replace cover dispenser in opposite manner and order of removal 3 4 DOOR ALIGNMENT If the space between your doors is uneven follow the instructions below to align the doors 1 With one hand lift up the door you want to raise at middle hinge 2 With other hand use pliers to insert snap ring as shown 3 Insert add...

Page 9: ...rewing phillips head screws 3 Remove the grille by removing one screw and pulling the grille forward 4 Remove the fan motor assembly by loosening 2 screws and disassembling the shroud 5 Pull out the fan and separate the fan motor and bracket 1 Unplug refrigerator power cord form outlet 2 Using a flat instrument gently pry the lamp cover loose in the front as shown Rotate downward to remove the rea...

Page 10: ...move the gear from the left side first by releasing the tab behind the gear place a screwdriver between the gear and the tab and pull up on the gear Second Remove the center rail Third Remove the gear from the right side by following the same steps for the left side NOTE THIS TAB MUST BE PUSHED IN TO RELEASE THE GEAR Step 4 Lift the freezer door up to unhook it from the rail support and remove Pul...

Page 11: ... by inserting the rail tabs into the guide rail Step 7 Reinstall the two screws into the guide rails one from each side Step 8 Reinstall the lower basket and close the freezer door Step 1 Reinstall the right side gear into the clip Step 2 Insert the rail into the right side gear Gears do not need to be perpendicular to each other Step 3 Insert the rail into the left side gear and insert the gear i...

Page 12: ...ve Then gently lift the gear part of rear left and right side of the drawer and pull it out in direction To install reposition the gear part of rear left and right side of the drawer after pulling out both rails as much as possible and gently push down both left and right side while checking the hook on the front part ...

Page 13: ...o the compressor Parts may appear physically identical but could have different electrical ratings Replace parts by part number and model number Use only approved substitute parts 4 2 6 Note for Using the PTC Starter 1 Be careful not to allow over voltage and over current 2 Do not drop or handle carelessly 3 Keep away from any liquid If liquid such as oil or water enters the PTC PTC materials may ...

Page 14: ... of disassembly 4 3 2 Role of the OLP 1 The OLP is attached to the Sealed Compressor used for the Refrigerator It prevents the Motor Coil from being started in the Compressor 2 For normal operation of the OLP do not turn the Adjust Screw of the OLP in any way Part Customer part number Lot code date code 330 FBYY S1 BOX98 12345678 Physical termination part number Electrical characteristics part num...

Page 15: ... 15 5 CIRCUIT DIAGRAM ...

Page 16: ...nals in PTC Starter Replace Compressor The range of resistance is between 1 50Ω ok Open or short No Voltage OLP disconnected Applied voltage isn t in acceptable range 115V 10 Advise customer that power supply needs to be checked by an electrician Reference Page12 Check OLP Check resistance of two terminals in OLP Reference Page12 Check starting state Check the power supply under load Compressor at...

Page 17: ...ter Open Replace defrost Heater Heavy frost buildup on evaporator Check current flow in the following components Sensor Fuse M Open Replace indicated component Check voltage at starting devices Poor or broken or open contact Check current flowing in sub coil of Compressor Shorted Check rating of OLP Lack of capacity Replace indicated component Check for open short or incorrect resistance readings ...

Page 18: ...rly Seal liquid foods with wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Condensartion forms in the Exterior Case Check if the ambient temperature and humidity of the surrounding air are high Is there a gap in the door gasket Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap There is abnormal noise Is ...

Page 19: ...n ambient temperature Normal discharging of the refrigerant The capillary tube is faulty WHOLE CLOG Freezer compartment and Refrigerator don t cool Flowing sound of refrigerant is not heard and frost isn t formed Equal to ambient temperature Normal discharging of the refrigerant MOISTURE CLOG Cooling operation stops periodically Flowing sound of refrigerant is not heard and frost melts Lower than ...

Page 20: ...est Very Slow None Equalization Test Very Fast Fast Very Fast Inefficient Compressor Partial Restriction Complete Restriction Condenser Temperature Cap Tube Sound Yes No Air Low Side Leak Loss of Change Very Slow Faint Hotter than Normal None to Weak Room Temperature Compressor Not Pumping Trace of Oil Undercharge The equalization test is trying to restart a compressor using a start kit after it h...

Page 21: ...by rotating ice ejection motor in normal and reverse direction and eject ice into the ice bucket if ice bucket is not full Conduct Ice Making Control after supplying water into the ice maker cube MOLD by operating water valve This is for refrigerator assembly line and service When ice making test switch is pressed it operates in the following steps initial ice ejection water supply control steps 1...

Page 22: ...ection control is completed and ice maker mold is even 2 The quantity of water supplied is determined by DIP switch and time 3 If water supply quantity setting is changed while power is on water supplies for the amended time If DIP switch is changed during water supply water shall be supplied for the previous setting time But it will supply for the amended time from the next supply 4 When water su...

Page 23: ...al 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 exercise initial operation It resets the ice maker if ice ejection motor or Hall IC is normal 6 The mold stops for 1 second a...

Page 24: ...e mold conditions Water shall be splashed if test switch is pressed before the water in the mold freezes Water shall be supplied while the mold returns to the horizontal conditions after ice ejection Therefore the problems of ice ejection returning to the horizontal conditions and water supply can be checked by test switch When test function performs normally buzzer sounds and water supply shall c...

Page 25: ... is turned off at the upper side of lock graphic of display with the lock release status 2 If desiring to lock the display the dispenser and control panel push on the LOCK button more than 3 seconds LOCK text is turned on at the upper side of lock graphic of display with lock status 3 The buzzer sound and control panel and dispenser function is not performed even if pressing display button other t...

Page 26: ...r three hours 2 If defrost starts during Ultra Ice Ultra Ice operates for the rest of time after defrost is completed when Ultra Ice operation time is less than 90 minutes If Ultra Ice operates for more than 90 minutes the Ultra Ice will operate for two hours after defrost is completed 3 If Ultra Ice is pressed during defrost Ultra Ice LED is on but this function will start seven minutes after def...

Page 27: ... 8 C 8 1 12 Filter Replacement Indication 1 After 6 months since the UNIT refrigerator has been powered on the water filter icon is tumed sON 2 When the water filter indicator LED is illuminated you should change the water filter After this you must press the water filter button for three seconds and you will hear a ding dong sound The icon will be OFF This operation will indicate that the UNIT is...

Page 28: ...easing the button the LED graphic displays the previous status 8 1 14 Automatic Diagnosis Function 1 Automatic diagnosis makes servicing the refrigerator easy 2 When an error occurs the buttons will not operate but the tones such as ding will sound 3 When the error CODE removes the sign it returns to normal operation RESET 4 The error CODE shows on the refrigerator and freezer display ERROR CODE o...

Page 29: ...perature Control button are pushed at the same time and hold for 5 seconds or longer it converts to Demonstration Mode 2 The Display shows OFF in F R temperature display 3 In this status all Loads are off Compressor Fan Damper Heater The refrigerator Lamp automatic off function warks normally and can be demonstrated 4 To release demonstration mode reset display by pressing the Ultra Ice button and...

Page 30: ... Vdc and the MICOM and IC 5 Vdc The voltage for each part is as follows VA1 is a part for preventing over voltage and noise When 385V or higher power is applied the inside elements are short circuited and broken resulting in blowout of the fuse in order to protect the elements of the secondary part of the TRANSFORMER PART VOLTAGE VA 1 115 Vac CE 3 12 Vdc CE 4 15 5 Vdc CE 5 5 V ...

Page 31: ...ll not work 8 2 3 Reset Circuit The RESET circuit allows all the functions to start at the initial conditions by initializing various parts including the RAM inside the MICOM IC1 when the power is initially supplied or the power supply to the MICOM is restored after a momentary power failure For the initial 10ms of power supply LOW voltage is applied to the MICOM RESET terminal During a normal ope...

Page 32: ... Con1 pin3 Con1 pin3 Con1 pin3 Con1 pin3 Output Voltage 115 VAC 115 VAC 115 VAC 115 VAC 115 VAC 115 VAC 2 Fan motor driving circuit freezing compartment fan mechanical room 1 This circuit makes standby power 0 by cutting off power supplied to ISs inside of the fan motor in the fan motor OFF 2 This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7 ...

Page 33: ...efrosting and the indoor temperature for compensating for the surrounding temperature into MICOM Opening or short state of each temperature sensor are as follows Freezer sensor Refrigerator sensor Defrosting sensor Room Temperature sensor SENSOR CHECK POINT NORMAL 30 C 50 C POINT Ⓐ Voltage POINT Ⓑ Voltage POINT Ⓒ Voltage POINT Ⓓ Voltage 0 5 V 4 5 V SHORT CIRCUITED 0 V OPEN 5 V ...

Page 34: ...sistance of the SENSOR has a 5 tolerance Measure the resistance of the SENSOR after leaving it for over 3 minutes in the measuring temperature This delay is necessary due to sensor response speed TEMPERATURE 20 C 15 C 10 C 5 C 0 C 5 C 10 C 15 C 20 C 25 C 30 C 40 C 50 C 22 3 16 9 13 0 10 1 7 8 6 2 4 9 3 9 3 1 2 5 2 0 1 4 77 60 47 3 38 4 30 24 1 19 5 15 9 13 11 8 9 6 2 4 3 RESISTANCE OF FREEZER SENS...

Page 35: ...IRE is poor Certify the MOTOR and the connection of the black wire of the MAIN PWB CONNECTOR CON1 2 If refrigerant is leaking Measure the amount of frost sticking on EVAPORATOR and the surface temperature of the condenser pipe Refrigerant leakage Replace the leaking part and replace any lost refrigerant OLP PTC is poor COMPRESSOR RELAY is poor Replace MAIN PWB THE CONNECTING WIRE is poor Check the...

Page 36: ...s poor Replace DEFROST SENSOR HEATER RELAY is poor Replace RY2 of MAIN PWB 2 If amount of cool air from FAN MOTOR is sufficient Make sure that the amount and speed of cool air are sufficient by touching the check supplied on the REFRIGERATOR 3 Door Line contact Check door seal when door is closed FAN MOTOR is poor Replace FAN MOTOR Passage of cool air is blocked Remove impurities CHECKING METHOD S...

Page 37: ... 37 8 5 MAIN PWB ASSEMBLY AND PARTS LIST 8 5 1 Main PWB Assembly Connector4 Connector6 Connector5 Connector1 Connector3 Connector2 Test Switch ...

Page 38: ...623B 616H 603A 627A S30 S31 S31 S31 S32 S31 603B 603C 616E 619B 619A 623A 616J 627B 627A 625A 616D 616C 616H 616F 623B S31 S31 617A 600A 600B ICEMAKER PARTS ...

Page 39: ...45B S10 610A 271D 610D B01 406D 402A 207A S03 207B B01 402A S03 603B 603C 626A 624G 607A 624C 624A 410A 271B 409D 503D S11 409B 158A 262B S14 408A 316B 400A 302B B02 262H 103C 315A 320A 315C 315B 106A 316A 310B 312A 300A 314A 317A 318A 105A 304A 309B 329C 323B S20 420A 312C 405F 404A 405C 405B 329A 407B S16 135C 610E 610C 332A 120B 120A 282G S08 145A 282F 250F 406B 410G 303A 303B 303C ...

Page 40: ...CASE PARTS ...

Page 41: ...FREEZER PARTS CAUTION Use the part number to order the part not the position number 250C 145C 250D 145G 145J 145K 136B 250E 250D 250C 145M 145J 145H 136A 237C 145F 131A CASE PARTS ...

Page 42: ...RIGERATOR PARTS CAUTION Use the part number to order the part not the position number 145E 141A 141B 141C 141A 141B 141C 161B 151B 146E 162B 145D 162A 161A 151A 154A 161C 141D 141C 141B 141A 141C 141B 141A ...

Page 43: ...REFRIGERATOR PARTS DOOR PARTS ...

Page 44: ... 233C 234B 241D 234D B05 241D 244A 243C 262C 243A S25 243B B05 619K 620C B06 B06 203A 212D 615A 312B S26 241E 234C B05 243B S25 243A 262C 243C 244A B05 241D 241D 241D 241C 241A 241B 233D 234A 233A 230A 231A 231B 212G 205C 205B 205A 250B 249H 249K 250A 249G 249E 249J 201A 250B 250H 249F 200A ...

Page 45: ...DISPENSER PARTS CAUTION Use the part number to order the part not the pos ition number S27 616A 279C 295A 279A 294A 292A 403A 279B 280A 280B 280C ...

Page 46: ......

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