Samsung SMH9151BE Service Manual Download Page 44

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6. PCB Diagrams

6-1 PCB Diagrams

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

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⑬

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③

④

⑥

⑤

⑧

⑨

⑩

⑦

Parts

Number

Part Name

Function and Rule

Y01

Main Relay

Fan, Lamp,

T/T
Control

Y02

Inrush Relay

Inrush Electric Current Decrease

Y03

Power High Relay

MW Power Control(High Power)

Y04

Power Low Relay

MW Power Control(Low Power)

Y05

Bright Relay

Turn on High Light

Y06

Vent High Relay

Turn on High V

entilation

Y07

Vent Low Relay

Turn on Low V

entilation

Y08

Vent Mid Relay

Turn on Mid V

entilation

Y09

Night Relay

Turn on Low Light

CN01

Inrush Connector

A T

erminal for Inrush Circuit

CN02

Power & Relay Connector

A T

erminal for Connecting with Power supply & Relay

Contact(Load Control)

CN03

Door switch Sensing Connector

A T

erminal for Connecting with Door Switch

CN04

Membrane switch Connector

A T

erminal for Connecting with Membrane Switch

Summary of Contents for SMH9151BE

Page 1: ...n 2 Product Specification 3 Disassembly and Reassembly 4 Troubleshooting 5 Exploded Views and Part List 6 PCB Diagrams 7 Wiring Diagrams 8 Schematic Diagrams BASIC SMH9151S MODEL SMH9151BE MODEL CODE SMH9151BE XAA ...

Page 2: ... 6 Removal of stirrer 14 3 7 Replacement of Control Circuit Board 15 3 8 Replacement of Cooktop lamp 16 3 9 Replacement of Oven Light 17 4 Troubleshooting 18 4 1 Parts checking method 18 4 2 Error Code Numbering Rule 19 4 3 Error Code List 19 4 4 Electrical Malfunction 21 5 Exploded Views and Parts List 38 5 1 Exploded Views 38 5 2 Main Parts List 39 5 3 Door Parts List 41 5 4 Control Parts List 4...

Page 3: ...3 1 Precaution ...

Page 4: ...ck Monitor Switch Replace all of the following at the same time Primary door sensing switch and power relay as well as the Interlock Monitor Switch The correct adjustment of these switches is described elsewhere in this manual Make sure that the fuse has the correct rating for the particular model being repaired 13 Design Alteration Warning Use exact replacement parts only i e only those that are ...

Page 5: ...ained within specified limits by close tolerance safety related components and adjustments If the high voltage exceeds the specified limits check each of the special components H V Diode Short H V Capacitor PRECAUTION There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH VOLTAGE TRANSFORMER secondary and filament terminals It is extremely dangerous to wor...

Page 6: ...Allow quick one touch cooking and reheating Venting System Two speed 300CFM venting system Quickly removes smokr and steam from cook top 2 2 Accessory Item Description Code No Q ty TRAY COOKING DE63 00536A 1 ASSY GUIDE ROLLER DE92 90495C 1 ASSY HOOD DAMPER DE92 90242D 1 ASSY HARD WARE DE92 90505G 1 FILTER AIR DE63 00196A 1 FILTER CHARCOAL DE63 00367E 1 ...

Page 7: ...ety Lock Yes Yes Clock System Option 12 hrs 24 hrs 12 hrs 12 hrs Demonstration Mode No No Numeric Pads 0 9 0 9 Turntable Distribution Stirrer Turntable Stirrer Turntable Turntable On Off No No End Signal Sound Yes Yes Vent Fan CFM 220 220 Vent Orientation Vertical Vertical Vent Fan Control Hi Lo Off Hi Lo Off Cooktop Lighting Hi Lo Off Hi Lo Off Cabinet Colour STSS Black White Silver STSS Black Wh...

Page 8: ...2 PEOPLE REQUIRED Oven is hooked on metal tabs at bottom of wall mounting plate and to cabinet by 3 top cabinet bolts 3 1 Replacement of High Voltage Transformer Parts Explaination Photo Explaination Grille 1 Disconnect oven power 2 Remove Grille 1 Remove 2 screws 2 Slide the Grille to the left then pull it straght out Panel Outer 3 Remove Panel Outer ...

Page 9: ...1 Replacement of High Voltage Transformer Parts Explaination Photo Explaination High voltage capacitor 4 Discharge the High voltage capacitor 5 Disconnect all the leads Base Bottom 6 Remove Base bottom HV Trans 7 Take out the HV Trans ...

Page 10: ...magnetron 2 Remove nuts 4 securing the magnetron to the wave guide 3 Take out the magnetron very carefully NOTE1 When removing the magnetron make sure that it antenna does not hit any adjacentparts or it may be damaged NOTE2 When replacing the magnetron be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition PRECAUTION During replacement be cer...

Page 11: ... the gap between Door A and Door C to remove Door C Be careful when handling Door C because it is fragile Then remove the door assembly Removal of Door C 2 Insert flat screwdriver into the gap between Door A and Door C to remove Door C Becareful when handling Door C because it is fragile Removal of Key Door Spring 3 Detach the spring and key door from Door ...

Page 12: ...or A Removal of Door E 5 Following the procedure as shown in the figure insert and bend a thin metal plate between Door E and Door A until you hear the tick sound Insertion depth of the thin metal plate should be 0 5mm or less PRECAUTION PERFORM MICROWAVE LEAKAGE TEST 3 3 Replacement of Door Assembly ...

Page 13: ...tch and power relay 4 When the above four switches operate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective 3 5 Replacement of Drive Motor Parts Explaination Photo Explaination Drive Motor 1 Disconnect power and remove bottom plate screws 5 2 Remove bottom plate and disconnect the turntable motor drive 3 Remove turntable motor...

Page 14: ...otor driver and located on the upper side of the cavity The oven uses a top feed wave guide The stirrer is located in the wave guide and the motor is located on the wave guide 1 Disconnect power and open the door 2 Remove the clip and turn the stirrer cover left 3 Remove stirrer cover and the stirrer will come with it ...

Page 15: ... screw securing the control box assembly 4 Disconnect the connectors from the control circuit board Removal of P C B Assembly 1 Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit FPC of membrane panel 2 Remove screws 4 securing the control circuit board 3 Lift up the control circuit board from the Ass y control box 4 When reconnecting the FPC connector make sure tha...

Page 16: ... avoid injury from the heat of the bulb Parts Explaination Photo Explaination Cooktop Lamp 1 Unplug the oven or turn off the power at the main power 2 Remove the bulb cover and mounting screws 3 Replace the bulb with a 40 watt appliance bulb 4 Replace the bulb cover and mounting screws 5 Turn the power back on at the main power supply ...

Page 17: ... Reassembly 3 9 Replacement of Oven Light Parts Explaination Photo Explaination Oven Light 1 Remove the Grille 2 Remove the COVER LAMP by push the hook and put up the lever 3 Replace the bulb with a 40 watt appliance bulb ...

Page 18: ...g 4 1 Parts checking method Parts Photo Good No Good Fuse 0 1 1 Ω 100 MΩ exceed T C O 0 1 1 Ω 100 MΩ exceed H V Trans 1 9 Ω 100 MΩ exceed Convection 100 990 Ω 100 MΩ exceed Fan Motor 10 99 Ω 100 MΩ exceed Grill Heater 10 99 Ω 100 MΩ exceed ...

Page 19: ...age E 11 Open Check Sensor part connection of sensor housing and PCB s connector E 12 Short E 13 T1 Max Time Error E 14 Dry Up No Load Insert food and restart Temp Sensor Error Code Temp Sensor Error Case E 2X Solution Page E 21 Open Check sensor part and connection of sensor housing and PCB s connector E 22 Short E 23 T1 Max Time Error Preheating not completed Check heater E 24 Over temperature e...

Page 20: ...ling Error 3minutes Remove moisture from sensor and restart E 46 Primary Open Error 3minutes Check Sensor E 47 The door opens during cooking Cancel the present mode and restart from the begining Humidity Sensor Error Code Humidity Sensor Error Case E 6X Solution Page E 61 Open Check Sensor E 62 Short E 63 T1 Max Time Error Others Error Code Others E 0X Letter Solution Page SE Key Short Error 10 se...

Page 21: ... connected properly Does the voltage change as the humidity temperature and weight change Replace the sensor Check if the sensor wire is damaged if the housing is loose and if the sensor and the wire are properly connected Check if the voltage of the GND and sensor changes using a digital multi meter by forcefully changing the humidity temperature and weight Connect the sensor Connect the wire pro...

Page 22: ... related parts such as the connector or soldering parts are slightly shorted Remove the shorted part of the temperature sensor Remove any foreign Substance from the shorted part YES NO YES YES NO NO YES NO Sensor Short Error E 12 E 22 E 28 E 32 E2A E 2C E 42 or E 62 Is the sensor shorted The sensor is out of order Replace the sensor Perform the operation again and check if it is working properly S...

Page 23: ... on the sensor or is something acting as an obstacle in front of the sensor Does it heat with completely dried food Replace the sensor If the sensor is contaminated by a foreign substance it may fail to detect the humidity Since heating completely dried food may burn the food take care Insert food and heat it again Place food with moisture into it and heat it again Remove the an foreign substance ...

Page 24: ...again and check if it is working properly S W Error Is a specific key not recognized Is the key recognized intermittently The membrane is defective Replace the Control Panel Is the key not recognized at all After Power On does the symptom continue Replace the PCB membrane Connector 4 4 4 SE ...

Page 25: ...s the weight sensor contaminated by any foreign substance Replace the sensor Check if the turntable turns abnormally because food is placed on one side only or if it turns irregularly or if it is slanted and the weight sensor is not pressed Place the turntable over the roller properly YES Remove the foreign substance Place the food in the center Has the turntable been placed over the roller proper...

Page 26: ...oor S W and PCB and if it is opened or shorted intermittently Close the door Check the Door S W and the housing Was the door open during the operation Perform the operation again and check if it is working properly S W Error Is the door sensing part normal After Power On does the symptom continue Replace the PCB 4 4 6 E 36 or E 47 ...

Page 27: ... is maintained over 3V continuously during the initial cooking course using a multi meter Remove any moisture of the sensor Check the sensor terminal and housing Replace the sensor YES NO YES NO YES NO YES NO Cooling Error E 45 Is the sensor wet S W Error Replace the PCB After Power On does the symptom continue Perform the operation again and check if it is working properly sensor sensor terminal ...

Page 28: ...n Short 되었는가 YES NO NO EEPROM이 삽입 되었는가 S W 오동작 YES YES YES NO EEPROM Error E 51 E 53 or E 54 Has the EEPROM been inserted Is the EEPROM terminal opened or is there a short circuit EEPROM Defect Replace the EEPROM Does it work properly Perform the operation again and check if it is working properly S W Error After Power On does the symptom continue Replace the PCB EEPROM MICOM 4 4 8 E 51 E 53 or E ...

Page 29: ...curred Repair the short circuit Is the temperature of the PCB over 90 C An E 2b error occurred Insert the temperature sensor An E 0b error occurred Check the Motor drive part Is the Cooling Motor rotating The temperature sensor is out of order Replace the temperature sensor Perform the operation again and check if it is working properly S W Error After Power On does the symptom continue Replace th...

Page 30: ...eheating Error E 08 E 23 E 26 Is the heater temperature very low Is the temperature sensor connected properly Is the resistance between the heater terminals more then a few MΩ Check the heater related drive part Replace the heater Reconnect the temperature sensor properly Replace the heater Does the heater work S W Error After Power On does the symptom continue Replace the PCB Perform the operatio...

Page 31: ...cel key to cancel the current state Press the Cancel key to cancel the current state Is this happening during the MW operation Is it happening during the Grill operation Is it happening during the Convection operation Over Time is set Over Time is set Over Time is set Over Time is set Is it happening during the Combination operation Since the max time may differ depending on the model refer to the...

Page 32: ...20 degrees Has the oven internal temperature reached over 350 degrees Is the temperature sensor connectivity normal Is the Heater connectivity normal An E 09 error occurred An E 24 E 0A error occurred Reconnect the temperature sensor properly Check and repair the heater drive part if necessary S W Error After Power On does the symptom continue Replace the PCB Perform the operation again and check ...

Page 33: ...peration again and check if it is working properly Is the oven in MW mode Is the internal temperature over 200 degrees Is the sensor connectivity normal An E 25 error occurred Press the Cancel key Connect it properly and try again After Power On does the symptom continue Press the Cancel key to cancel the current state 4 4 15 E 25 ...

Page 34: ...ly Is the oven in Bake Toast mode Has the switch heater operated for 20 seconds Has the micro switch been detected After waiting for 20 seconds check if the micro switch has been detected The micro switch is defective Replace it Connect the micro switch properly After Power On does the symptom continue Is connectivity housing of the micro switch normal micro switch 4 4 16 E 06 ...

Page 35: ...duit normal NO NO Is Primary interlock switch normal Is Power Relay normal YES YES YES YES YES YES NO NO NO YES NO NO Replace switch Do check power supply circuit Do check Relay control circuit Is high voltage dioed normal Is high voltage dioed normal Is high voltage capacitor normal Is magnetron normal NO Is the IC01 output of PCB normal NO NO Checking high voltagecircuts NO NO 4 4 17 If oven mal...

Page 36: ...r to User Manual Menbrane type Tact type YES YES Buttons of the control panel do not work Inspection method Are button pressed in the correct order Is the connector of the control panel normal Replace PCB 4 4 18 If button malfunction ...

Page 37: ...O Is the latch switch operating normally Food is not heated even though an oven works Inspection method Method to control latch switch Checking high voltage circuits YES 4 4 19 If food is not heated even though an oven works ...

Page 38: ...3 P014 M015 M060 P090 P087 P088 P091 P089 U012 U005 U008 U003 U007 M036 U001 C081 M087 T037 T036 P001 M034 M051 M049 B006 B002 B001 B001 B013 B018 P122 M045 M155 P123 M131 M038 M017 M111 P109 M023 H018 M202 M030 P030 M029 M035 M098 M040 M206 M039 M041 M042 W052 M131 P007 M068 P426 5 Exploded Views and Parts List ...

Page 39: ...L 910nF 2100V BK 54x35x75mm 20mm 1 SA M040 DE61 00115A BRACKET HVC SMH7175 SECC T0 6 1 SA M041 DE91 70063D ASSY HVD HV03 12 MWO GE RED 1 SA M042 DE59 00002A DIODE H V 2CL4512H 450mA 13KV MWO ALL 1 SA M045 DE94 01927A ASSY BASE PLATE SUB MODULAR 3 SECC T0 5 1 SA M049 DE31 10172B MOTOR SYNCHRONOUS SM16FBY36P1AW3 OTR F 1 SA T T M051 DE63 00532A COVER MGT MODULAR3 PP 1 SA M060 DE92 90505G ASSY HARD WA...

Page 40: ...OSTAT PW 2N 8XV 125V15A V 120 0 23 1 SA P123 DE47 20034A THERMOSTAT 40 70 M5 1 SA P426 DE63 00549A COVER FRONT MODULAR3 SECC T0 5 1 SA T001 DE63 00536A TRAY COOKING MODULAR3 GLASS T5 0 C 1 SA T017 DE92 90495C ASSY GUIDE ROLLER MD3 1 5 1 7 SPS TEFLON 1 SA T036 DE31 00055A BLADE STIRRER MODULAR3 ALP1050 T0 1 SNA T037 DE61 01061A HOLDER STIRRER MD3 SPS 1 SNA U001 DE97 00679J ASSY BASE BOTTOM MD3 SMH8...

Page 41: ...00337A DOOR C MO1650WA PP T2 0 BLK 1 SA D007 DE61 00048A SPRING KEY BLUING HSWR PI1 95 D8 75 L43 1 SA D011 DE64 01308A DOOR KEY MODULAR 2 POM BLK 1 SA D020 DE94 01814A ASSY HANDLE SMH8165BG XAA BLK ARCADIA 1 SA ASSY DOOR D024 DE64 02053A SCREEN DOOR B SMH8165 TEMPERED GLASS T3 1 SA D049 DE94 01811P ASSY DOOR SMH9151BE XAA BLK MD3 1 5 1 SA D020 D002 D024 D004 D049 D011 D005 D007 D006 5 3 Door Parts...

Page 42: ...34 00304H SWITCH MEMBRANE SMU9151B XAA PC 120V 6 1 SA ASSY CTRL PANEL C005 DE64 01950E CONTROL PANEL SMH9151B XAA PC BLACK 1 SA C009 DE64 00766A WINDOW DISPLAY SMH7175 SAN T2 0 SMOG 1 SA ASSY CTRL PANEL C082 DE94 01807Q ASSY CONTROL BOX SMH9151BE XAA 120V60HZ 1 SA P157 DE94 01810B ASSY BRACKET C PANEL SMH8165 MD3 LED 1 SA ASSY CTRL BOX C003 C082 C004 C009 C005 P157 C001 5 4 Control Parts List SNA ...

Page 43: ...SCREW WASHER M5 L12 2S 6 SA HVT MGT 1 1 DE60 10067A SCREW TAP TH FEFZB 2 SLOT TH M4 L8 8 SA BASE BOTTOM P OUTER SIDE 1 1 DE60 10082I SCREW A 2S 4X10 FEFZY 18 SA C BACK B PLATE C BACK M PLATE C BACK P OUTER C BACK V T MOTOR C UPPER BKT MGT C UPPER BK 1 1 DE92 90508A ASSY HOLDER NUT OTR6 2 SA PANEL OUTER 1 2 DE60 10111A SCREW LAG MSWR W1 4X50 1 SNA 1 2 DE60 20022A BOLT TOGGLE MSWR W3 16X75 2 SNA 1 2...

Page 44: ...ow Power 5 RY05 Bright Relay Turn on High Light 6 RY06 Vent High Relay Turn on High Ventilation 7 RY07 Vent Low Relay Turn on Low Ventilation 8 RY08 Vent Mid Relay Turn on Mid Ventilation 9 RY09 Night Relay Turn on Low Light 10 CN01 Inrush Connector A Terminal for Inrush Circuit 11 CN02 Power Relay Connector A Terminal for Connecting with Power supply Relay Contact Load Control 12 CN03 Door switch...

Page 45: ...UT5 14 ENCODER COMMON ENCODER S W MODEL CN02 1 MAIN RELAY 2 NO PIN 3 BRIGHT NIGHT RELAY 4 NO PIN 5 VENT LOW RELAY 6 NO PIN 7 VENT HIGH RELAY 8 NO PIN 9 VENT MID RELAY CN03 1 DOOR SWITCH1 RY_12V 2 GND 3 DOOR SWITCH1 12V 4 GND CN01 1 POWER LIVE 2 NO PIN 3 INRUSH CIRCUIT MODEL OPTION RY04 1 POWER RELAY CONTACT1 HVT POWER1 AC POWER NEUTAL AC98V 144V 2 POWER RELAY CONTACT2 HVT POWER3 RY03 1 POWER RELAY...

Page 46: ...46 7 Wiring Diagrams 7 Wiring Diagrams 7 1 Wiring Diagrams This Document can not be used without Samsung s authorization ...

Page 47: ...47 7 Wiring Diagrams 7 1 Wiring Diagrams This Document can not be used without Samsung s authorization ...

Page 48: ... 21 25 2 PDO RESET 14 TEST 13 VAref 18 VDD 40 VSS 17 X IN 15 X OUT 16 23 4 19 43 42 41 39 38 37 36 35 10 11 12 33 20 3 5 6 7 8 9 28 29 27 31 22 34 24 32 30 26 TPM87PH47U IC01 44 1 1 4 5 5V 2K R15 CN03 SMW250 05V_WHT 3 2 R01 10K PC817 PC101 4 3 1 2 5V 6 10 5V 1 2 4 5 1K 12V ST1 BCK 1605_EE1616 R06 1nF C15 1nF C13 1nF C11 1N4148M D18 47K R11 47K R08 R07 47K 47K R10 R09 47K DU12D1 1P KRC246M TR04 RY0...

Page 49: ...gportal com Latin America latin samsungportal com CIS cis samsungportal com Europe europe samsungportal com China china samsungportal com Asia asia samsungportal com Mideast Africa mea samsungportal com Samsung Electronics Co Ltd September 2009 Printed in Korea Code No DE68 05554A ...

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