Samsung FTQ387LWGX Service Manual Download

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7. Schematic Diagrams

7-2 Schematic Diagrams (Main)

(This Document can not be used without Samsung’s authorization)

PROOF

SELF

CLEAN

CONV.

BAKE

AC_LINE

NUM 4

NUM 7

CONV.

ROAST

NUM 3

TEMP. SENSOR

LIGHT

WARMING

CENTER

SET

/START

NUM 2

WIRE TO LVT

KEEP

WARM

WARMING

BAKE

COOK

KITCHEN

TIMER

DELAYT

START

CLEAR

/OFF

BROIL

CLEAN

LEVEL

ON/OFF

COOKING

TIME

CLOCK

OVEN

GND

SOFT TOUCH

WARMING

CENTER

POWER SUPPLY

BUZZER

When use soft touch, D11 ~ D19 is jumper.

NUM 0

NUM 1

RESET

KEY-INPUT

LED DISPLAY

NUM 6

NUM 9

EMCR

MAIN-PCB

MEMBRANE TYPE

TO ASUB BOARD

(RELAY BOARD)

DRAWER

CUSTOM

OPTION

NUM 5

NUM 8

STEAM

RELAY CONTROL

CN07/CN08 KEY MATRIX

KEY-INPUT

LED-BAR

MICOM

C-TOP SENSING

INTERRUPT

R50

47K

DGND

CBE2220BA

BZ01

TR03

KRC246M

1T4

D07

R35

100K

CN05

SMW250-08V_WHT

R46

47K

DGND

47K R47

R49

R40

R17

13K

R48

2K R14

DGND

47K

CN02

R04

YW396-04V

C13

R41

+12V

DGND

100nF

KRC246M

+12V

IC04

7033P

TR06

1N4148M

D13

10K R31

R64

220

R01

47K

R16

KRC246M TR17

+5V

TR07

KRC246M

DGND

KIA75S393F

VCC

VEE

IC06

26.1K

R30

24LC04B

IC07

R74

47K

+5V

CN03

SMW250-03AV_RED

KRC246M

2K R02

TR14

R26

10K

R22

17.4K

ZNR1

10D471

TR32

KRC246M

220

R56

2K R03

+5V

5pF

C20

DGND

R73

47K

R66

220

C19

100nF

ANODE

BLU

GRN

RED

100K R37

10K

LED2

LED_RGB

R38

220

R60

KRC246M TR21

UZ5.1BSB ZD01

13.7K

R23

R19

1N4148M

D09

R29

100K

D14

1N4148M

47K

TR16

KRC246M

R53

R51

47K

1N4148M

D11

R18

80K

10nF

+5V

2K OR02

C18

C17

1N4148M

D15

10nF

C16

220

R69

IC03

KIA7805AF

100nF

D03

1T4

+5V

ANODE

BLU

GRN

RED

DGND

220

R59

+5V

LED_RGB

LED1

DGND

+5V

DGND

+5V

220

R61

KRA225M

TR27

LED_RGB

LED3

ANODE

BLU

GRN

RED

CN07

FCZ100E-15SS-K

24.9K

R21

TR25

100nF C09

KRA225M

KRC246M TR18

R12

+5V

KRC246M TR19

R24

11.3K

52.3K

R20

R05

D01

1T4

D04

1T4

D02

1T4

+5V

TR30

KRC246M

C15

4.7nF

VDD

VSS

XIN

XOUT

C12

100nF

RESET

TEST

VAREF

AVDD

AVSS

INT5

IC01

TMP88FW45FG

+5V

DGND

TR01

KRC246M

+12V

220

R58

CN09

YW396-03AV(WHT)

+5V

D08

1N4148M

C04

100uF

220

R63

TR26

KRA225M

10uF C22

470uF C03

D16

1N4148M

KA7812A

220

R55

IC02

R72

DSP1

CSV-A2001

180

+5V

YW396-05V CN10

KRC246M TR13

100 R08

1T4

D05

ANODE

BLU

GRN

RED

CN08

YW396-03AV(WHT)

ANODE

BLU

GRN

RED

LED5

LED_RGB

LED4

LED_RGB

R42

C01

1000uF

100nF C10

2200uF C02

+5V

2K R33

KRA226-AT TR05

OR01

TR24

KRA225M

TR10

KRC246M

KRC246M TR20

+5V

5pF

C21

R45

TR28

KRA225M

+5V

R15

2K R07

ANODE

BLU

GRN

RED

DGND

LED_RGB

LED6

DGND

R13

R32

1.78K

R44

C05

100nF

+5V

DGND

1K R25

CN01

+5V

LED7

LED_RGB

ANODE

BLU

GRN

RED

YW396-07V_WHT

KRC246M TR12

TR22

R43

KRA225M

D06

1T4

KRC246M

TR31

+5V

D12

1N4148M

CN04

SMW250-06V(WHT)

D10

1N4148M

TR29

DGND

100nF

KRA225M

C14

KRC246M TR02

+5V

220

R57

+5V

R06

220

R65

KRA225M

TR23

TR15

R28

+5V

KRC246M

R11

C11

C07

100nF

R10

100nF

180

DGND

KRC246M TR11

R71

BLU

GRN

RED

DGND

LED_RGB

LED8

ANODE

KRC246M

220

R62

TR09

+5V

R09

220

TR08

R27

26.1K

KRC246M

KRA226-AT

TR04

C08

100nF

R70

R52

47K

180

+5V

DGND

+5V

+12V

220

R67

220

R54

100nF C06

100K R34

R36

100K

VEE

R39

KIA75S358 IC05

VCC

XTL1

16MHz

PC817 PC101

R68

220

KEY-1

12516HS-14 CN06

SDA

INT

OVEN-LIGHT

DOOR-CONTROL

CONV-HEATER

WD-HEATER

DLV

BAKE-HEATER

CONV-FAN

BROIL-HEATER

W-COOKTOP

DOOR-LOCK

CTOP-S

KEY-1

KEYIN-1

KEYIN-6

KEYIN-1

KEYIN-6

60Hz

LED-S10

LED-S9

LED-S8

LED-S7

LED-S6

LED-S5

LED-S4

LED-S3

LED-S2

LED-S1

LED-S12

LED-S13

LED-S14

LED-S15

LED-S16

ST-3

ST-1

SCL

SDA

SCL

D-LED-G8

D-LED-G7

D-LED-G6

D-LED-G5

D-LED-G4

D-LED-G3

D-LED-G2

D-LED-G8

D-LED-G1

D-LED-G2

D-LED-G3

D-LED-G4

D-LED-G5

D-LED-G6

D-LED-G7

60Hz

DOOR-LOCK1

DOOR-LOCK2

D-LED-G1

BL-RED

BL-GRN

BL-BLU

BL-GRN

BL-RED

BL-BLU

BL-GRN

BL-RED

BL-BLU

BL-GRN

BL-RED

BL-BLU

BL-GRN

BL-RED

BL-BLU

BL-GRN

BL-RED

BL-BLU

BL-GRN

BL-RED

BL-BLU

BL-GRN

BL-RED

BL-GRN

BL-RED

LADDER-4

BL-R

BL-G

BL-B

KEY-2

KEY-3

KEY-4

DOOR-CONTROL

KEY-5

DOOR-SENSING

LED-S2

LED-S3

LED-S4

SR-2

LED-S5

LED-S6

LED-S7

LED-S8

LED-S9

KEYIN-2

KEYIN-3

SR-1

KEYIN-4

KEYIN-5

KEY-5

KEY-4

KEY-3

KEY-2

LADDER-1

LADDER-2

LADDER-3

BL-BLU

LED-G1

LED-G2

LED-G3

LED-G4

LED-G5

LED-G6

LED-G7

LED-G8

BROIL-HEATER

BAKE-HEATER

CONV-HEATER

WD-HEATER

SR-2

W-COOKTOP

SR-1

CONV-FAN

LADDER-1

OVEN-LIGHT

LADDER-2

DOOR-LOCK

LADDER-3

RY-SOURCE

LADDER-4

LED-S1

RESET

OPTION2

OPTION1

BZ_CON

ST-2

BUZZER

DOOR-SENSING

BUZZER

ST-4

DOOR-LOCK1

DOOR-LOCK2

RY-SOURCE

DLV

D-LED-G3

LED-S11

LED-G8

BZ_CON

D-LED-G2

LED-S12

BL-R

D-LED-G1

LED-S13

BL-G

LED-S14

BL-B

LED-S15

KEYIN-2

LED-S16

KEYIN-3

KEYIN-4

OPTION1

KEYIN-5

OPTION2

D-LED-S11

D-LED-S10

D-LED-S9

LED-G2

D-LED-G8

LED-S9

LED-G3

D-LED-G7

LED-G4

D-LED-G6

LED-G5

D-LED-G5

LED-G6

D-LED-G4

LED-S10

LED-G7

D-LED-S10

LED-S2

D-LED-S9

LED-S3

D-LED-S8

LED-S4

LED-S11

D-LED-S7

LED-S5

RESET

D-LED-S6

LED-S6

D-LED-S5

LED-S7

D-LED-S4

LED-S8

D-LED-S3

D-LED-S2

INT

D-LED-S1

LED-G1

D-LED-S16

D-LED-S15

D-LED-S14

D-LED-S13

D-LED-S12

D-LED-S16

D-LED-S15

D-LED-S8

D-LED-S7

D-LED-S6

D-LED-S5

D-LED-S4

D-LED-S3

D-LED-S2

D-LED-S1

D-LED-S14

LED-S1

D-LED-S13

D-LED-S12

D-LED-S11

1(5$%65B$$LQGE

Summary of Contents for FTQ387LWGX

Page 1: ...GSPN see rear cover for the more information 1 Precaution 3URGXFW 6SHFL FDWLRQ 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagrams 6 Wiring Diagram 7 Schematic Diagrams BASIC FTQ387LWGX MOD...

Page 2: ...Plunger 16 3 6 Removing Heater Broil 17 3 7 Removing Heater Bake 18 3 8 Removing Convection Element Fan Covnection and Motor Convection 19 3 9 Removing Lamp 20 3 10 Removing Sensor Thermistor 21 3 11...

Page 3: ...uations If you need repairs contact an SAMSUNG Service Center or your dealer If the power cord is defective it must be replaced by a Tuali ed service agent with a UL listed range cord Electrical leads...

Page 4: ...interior surfaces of oven until they have had suf cient time to cool Other surfaces of the appliance may become hot enough to cause burns among these surfaces are oven vent openings and surfaces near...

Page 5: ...n Never keep pet birds in the kitchen the health of birds is extremely sensitive to the fumes released during an oven selfclean cycle Fumes may be harmful or fatal to birds Move birds to well ventilat...

Page 6: ...ion 1 4 Model Serial Number Label and Tech Sheet Locations This Model Serial Number label and Tech Sheet locations are shown below Tech Sheet Location On Low Rear Cover Model Serial Number Location 1...

Page 7: ...fficiency Samsung 3 fans Competitors 1 fans Samsung Competitors Surround Air vection Main Convection Fan with 2 Sub Fans makes complex small Swirl Optimal Heat Distribution and Even Cook Performance U...

Page 8: ...ly Wipe it out with wet cloths Operating Temperature About 70 C Operating Time 20 Minutes Used Heater Bottom Baked Heater Smell No smell Tool to clean Wet cloths Biggest Capacity The biggest capacity...

Page 9: ...3 000W Triple 6 9 12 1 100 2 200 3 000W Oven Capacity cu ft 5 9 5 9 Broil element 3 800 watts 3 800 watts Bake element 3 000 watts 2 400 watts Convection System Yes Yes Convection element Yes 800W 240...

Page 10: ...10 6SHFL FDWLRQV 2 3 Accessory Item Description Code No Q ty Rack Flat DG75 01001B 3 1 5 65B LQGE...

Page 11: ...if you are not careful Parts Explanation Photo Explanation Cover Back Main Wire Cover Back Guard Wire and PCB Main Cover Back Guard Wire Cover Back Main Wire 1 Turn off the electrical supply going to...

Page 12: ...e present and you can cut yourself if you are not careful Parts Explanation Photo Explanation PCB Sub L V Trans PCB Main 1 Turn off the electrical supply going to the range 2 Pull the range away from...

Page 13: ...you can cut yourself if you are not careful Parts Explanation Photo Explanation Regulator Energy 1 Turn off the electrical supply going to the range 2 Pull the range away from the wall so that you can...

Page 14: ...or electrical shock Parts Explanation Photo Explanation Surface elements and Ceramic Glass Cooktop 1 Unplug the cord or disconnect power 2 Open oven door and remove the 3 screws located at the front...

Page 15: ...ement bracket screw shown above for the element you are servicing c Carefully lift the bottom of the bracket Must far enough to remove the element d Use sharp tool to remove the heating element REASSE...

Page 16: ...h Door Switch Door Plunger 1 Turn off the electrical supply going to the range 2 Open the oven door 3 Raise the cooktop see page 15 for the procedure 4 To remove the Latch Door a Remove the 2 screws f...

Page 17: ...can cut yourself if you are not careful Parts Explanation Photo Explanation Broil 1 Turn off the electrical supply going to the range 2 Open the oven door and remove the racks from inside the oven 3 T...

Page 18: ...Main Wire See step 3 4 on page 12 for procedure 4 Remove Terminal Block and Bracket Cover Access with Adiabatic Terminal by unscrew 3 points 5 Remove Cover Warming Heater and disconnect 2 wires 6 Unsc...

Page 19: ...nit 3 Remove Cover Back Main Wire from the unit See step 3 on page 12 for procedure 4 Remove oven door See Page 25 on page for procedure 5 Power Cover casing 6 Unscrew 2 screws and remove Bracket Conv...

Page 20: ...en counterclockwise to remove 4 Turn bulb counterclockwise to remove from socket 5 Replace bulb and cover by turning clockwise CAUTION Be careful not to scratch or chip the oven liner paint when to re...

Page 21: ...he sheet metal parts Sharp edges may be present and you can cut yourself if you are not careful Parts Explanation Photo Explanation Sensor Thermistor 1 Turn off the electrical supply going to the rang...

Page 22: ...ctric range be careful when handling the sheet metal parts Sharp edges may be present and you can cut yourself if you are not careful Parts Explanation Photo Assy Drawer Heater Warming Drawer Explanat...

Page 23: ...Assy Drawer Heater Warming Drawer To remove Heater Warning Drawer 1 Remove a screw from Bracket Warming Heater 2 Remove Cover Warming Heater and disconnect 2 wires 3 Pull out the Heater Warming Drawer...

Page 24: ...or to the door removal position which is approximately 5 degrees refer to the Fig 2 Lift door up and out until the hinge arm are clear of the slot To replace door 1 Firmly grasp both sides of the door...

Page 25: ...areful when handling the sheet metal parts Sharp edges may be present and you can cut yourself if you are not careful Parts Explanation Photo Explanation Door 1 Remove the oven door from the range see...

Page 26: ...tion Photo Explanation Handle Door To remove Handle Door 1 Remove 2 screws to remove Handle Door Glass Inner To remove Glass Inner 1 Remove 6screws from rear side of door to remove 2 Hinge Door 2 Remo...

Page 27: ...Handle Door Explanation 4 Remove Baf e Door and take out the Glass Inner assembly Explanation Photo Explanation 5 Unfold 2 anges of Cover Frame Inner Glass to taking out Glass Inner Reassembly of All...

Page 28: ...s Explanation Photo Gasket door Explanation 1 Open the oven door to its fully down position 2 Pull the ends of the gasket out of the liner holes 3 Pull the oven door gasket clips out of the holes unti...

Page 29: ...not careful Parts Explanation Photo Explanation Panel Side 1 Turn off the electrical supply 2 Remove the oven door from the range see page 3 12 for the procedure 3 Pull the range away from the wall so...

Page 30: ...he oven turns off the stored error codes are deleted 7 Press CLEAR OFF pad to return to normal display mode Oven sensor error Measure or Check tool Multimeter Failure code CAUSE SOLUTION E 27 oven sen...

Page 31: ...of Sub PCB 2 Check whether between Sub PCB and connector or keypad and cable have a short circuit 3 If there is not a problem occurred with connector on Sub PCB and cable of keypad replace the Sub PCB...

Page 32: ...ion of harness Oven sensor and No CN02 of Main PCB Measure resistance of connector CN02 of Main PCB Nomal 2850 Make sure the pattern soldering damaged parts related to oven sensor of Main PCB and repa...

Page 33: ...make sure through the method of 4 1 on 31 page if if those series of working for informing error take long time or not functioned E 0A Oven heating over 1 It will display E 0A after beeping 10 times...

Page 34: ...e 1080 at the room temperature Check the connecting condition of harness related with oven sensor Check connector and harness connected to Sub PCB Check whether harness on connector CN04 CN05 of main...

Page 35: ...time or not functioned E 0E Replace micro switch or Lock motor No Disconnect power Get rid of harness connected with Lock motor Micom switch check com NC com NO Measure resistance of Lock motor Coil 1...

Page 36: ...not functioned SE Disconnect power Take out keypad cable from the main PCB Check whether between connector CN01 pin and pin on sub PCB have a short circuit Make sure whether between keypad and cable...

Page 37: ...37 4 Troubleshooting 4 1 Failure Display Codes Control PCB Operation Sort of Control PCB Main PCB Front Back Sub PCB Front Back Membrane 1 5 65B LQGE...

Page 38: ...AC120V L1 N CN04 CN05 This connector is to get all operating of relay on sub PCB to be connected CN06 This is consisted of 15 pin and take a role of getting a cable on keypad to connect with touch PCB...

Page 39: ...nto relay on sub PCB or not take action follow as Replace or repair harness Replace or repair sub PCB Measure resistance both ends of terminal on thermostat normal 0 ohoms Check whether harness is con...

Page 40: ...on touch PCB is in normal state Replace after con rming whether it has been loosen or disconnected Make sure connector CN07 on main PCB or PCB pattern Replace or repair after con rming whether keypad...

Page 41: ...oosen or disconnected Convection fan is not rotated Check whether Convection fan relay Ry08 on sub PCB and connector CN01 is in normal Replace or repair Relay Replace or repair connector Make sure whe...

Page 42: ...120V Check the Low voltage Transformer Yes No No No power or No display Reset the circuit breaker or check main power Reconnect and replace or repair harness is damaged Check whether varistor ZNR1 on...

Page 43: ...UXGaGs G G G No color voltage resistance Primary white 120V input 75 80 Secondary 1 red 13 5V 1 5 2 5 Secondary 2 yellow 8V 0 8V 1 5 Thermal Fuse with built in Low voltage Transformer will be open if...

Page 44: ...tch has been loosen or disconnected Weld with terminal not to be misconnected if harness is disconnected from terminal on switch Tighted terminal of harness by compressing not to be loosen Check wheth...

Page 45: ...is disconnected from terminal on radiant It is very dangerous when radiant heater is working in case that harness has misconnected Tighted terminal of harness by compressing not to be loosen Continue...

Page 46: ...been loosen or disconnected Weld with terminal not to be misconnected if harness is disconnected from terminal on switch Tighted terminal of harness by compressing not to be loosen Continued Yes Chec...

Page 47: ...been loosen or disconnected Weld with terminal not to be misconnected if harness is disconnected from terminal on Radiant It is very dangerous when radiant heater is working in case that harness has...

Page 48: ...as been loosen or disconnected Weld with terminal not to be misconnected if harness is disconnected from terminal on switch Tighted terminal of harness by compressing not to be loosen Ok Check whether...

Page 49: ...sconnected if harness is disconnected from terminal on Radiant It is very dangerous when radiant heater is working in case that harness has misconnected Tighted terminal of harness by compressing not...

Page 50: ...cted from terminal on switch Tighten terminal of harness by compressing not to be loosen Ok Ok Fig 11 The drawer of connected wire of harness Check whether harness is connected with cooktop has been d...

Page 51: ...is disconnected from terminal on switch It is very dangerous when radiant heater is working in case that harness has misconnected Tighten terminal of harness by compressing not to be loosen Continued...

Page 52: ...rt circuit or Relay Ry07 has been damaged Replace relay or repair PCB pattern Tighten terminal of harness by compressing not to be loosen Ok Ok Check whether harness is connected with cooktop has been...

Page 53: ...connected from terminal on switch It is very dangerous when radiant heater is working in case that harness has misconnected Tighten terminal of harness by compressing not to be loosen Continued Ok Ok...

Page 54: ...eck whether harness has been damaged or disconnected No Yes Yes Replace Hot Indicator Lamp Having a short circuit might cause fire or damage of infinite switch if harness is misconnected during cookto...

Page 55: ...asured for more than 1 minute because heater is supposed to on off cycling work Approx 26 30 at the room temperature Terminal voltage of bake heater AC 240V Replace or repair harness Replace or repair...

Page 56: ...from heater and removing lamp Measure the voltage of socket s terminal after having lamp worked by pressing oven light keypad Approx Terminal voltage of lamp socket 120V Replace or repair harness Rep...

Page 57: ...e RR Infinite Switch Single Check whether harness is connected with switch properly HI orange violet 2P blue H2 Yellow L2 red L1 black black Measure voltage and resistance between terminals Please ref...

Page 58: ...4b upper sky violet Measure voltage and resistance between terminals Please refer to schematic diagram Check whether power level is right with making RF cooktop work Approx Resistance between termina...

Page 59: ...ond terminal 240V Replace or repair harness 1100 2200 3000W RF Radient element RF Radient element Second element Second element Third element Third element First element First element 1100 2200 3000W...

Page 60: ...state of working of switch Make sure whether wire housing and terminal is connected with switch has been damaged or not Nomal open 0 Nomal close Replace or repair if wire or terminal has been damaged...

Page 61: ...113 45 1170 17 14 10 961 86 122 50 1188 93 23 5 980 95 212 100 1374 93 32 0 1000 00 302 150 1558 01 41 5 1019 02 392 200 1738 06 50 10 1038 02 482 250 1915 39 59 15 1056 99 572 300 2089 69 68 20 1075...

Page 62: ...in and take a role of getting a cable on keypad to connect with touch PCB 5 CN08 CN09 A Terminal for connecting with SMPS Power Supply This is to supply power with primary on Low voltage transformer a...

Page 63: ...Ry03 Broil relay Broil relay Ry03 Bake relay Ry04 convection relay Ry05 will be on off working by micom signal after DLB relay is worked Broil relay It will not be problem with reversing the order in...

Page 64: ...64 6 Wiring diagram 6 1 Wiring diagram This Document can not be used without Samsung s authorization 1 5 65B LQGE...

Page 65: ...65 7 Schematic Diagrams 7 1 Schematic Diagrams This Document can not be used without Samsung s authorization 1 5 65B LQGE...

Page 66: ...D LED5 LED_RGB LED4 LED_RGB 2K R42 C01 1000uF 100nF C10 2200uF C02 5V 2K R33 KRA226 AT TR05 OR01 2K TR24 KRA225M TR10 KRC246M KRC246M TR20 5V 5pF C21 R45 2K TR28 KRA225M 5V R15 2K 2K R07 ANODE BLU GRN...

Page 67: ...CN04 SMW250 06V WHT D08 1N4148M CN05 SMW250 08V_WHT D09 1N4148M KRC246M TR10 T03 T02 5 1 3 7 9 T01 TR11 CN01 YW396 09AV KRC246M KRC246M KRC246M TR04 TR03 TR02 KRC246M KRC246M TR05 12V TR06 KRC246M G5T...

Page 68: ...2 Printed in Korea GSPN GLOBAL SERVICE PARTNER NETWORK Area Web Site Europe CIS Mideast Africa gspn1 samsungcsportal com Asia gspn2 samsungcsportal com North Latin America gspn3 samsungcsportal com Ch...

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