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8. P.C.B Diagrams

8-1 P.C.B Diagrams

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

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Содержание SMH7175BE

Страница 1: ...ecaution 2 Speciﬁcations 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 PCB Diagrams 9 Schematic Diagrams 10 Reference SEA BASIC SMH7175WC MODEL SMH7175BE SMH7175WE SAM0117 ...

Страница 2: ...2 Removal of P C B Assembly 13 4 8 3 Removal of Window Display Membrane Panel 13 5 Alignment and Adjustments 14 5 1 High Voltage Transformer 14 5 2 Low Voltage Transformer 14 5 3 Magnetron 14 5 4 High Voltage Capacitor 15 5 5 High Voltage Diode 15 5 6 Main Relay and Power Control Relay 15 5 7 Adjustment of Primary Switch Door Sensing Switch and Monitor Switch 15 5 8 VENT EXHAUST BLOWER MOTOR 16 5 ...

Страница 3: ... 4 Standard Parts List 29 8 P C B Diagrams 30 8 1 P C B Diagrams 30 8 2 P C B Parts List 31 8 2 P C B Parts List continued 32 9 Schematic Diagrams 33 9 1 Schematic Diagrams 33 10 Reference 34 10 1 Model name standard 34 10 2 Customer inquiry cases and countermeasures 35 Contents ...

Страница 4: ...ction within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the...

Страница 5: ...ches while repairing an MWO 11 To avoid any possible radiation hazard replace parts in accordance with the wiring diagram Also use only the exact replacements for the following parts Primary and secondary interlock switches interlock monitor switch 12 If the fuse is blown by the Interlock Monitor Switch Replace all of the following at the same time Primary door sensing switch and power relay as we...

Страница 6: ...and discharge the high voltage capacitor See Figure 1 1 2 The high voltage capacitor remains charged about 30 seconds after disconnection Short the negative terminal of the high voltage capacitor to to the oven chassis Use a screwdriver 3 High voltage is maintained within speciﬁed limits by close tolerance safety related components and adjustments If the high voltage exceeds the speciﬁed limits ch...

Страница 7: ...OWER OPERATING FREQUENCY MAGNETRON COOLING METHOD OUTSIDE DIMENSIONS NET WEIGHT SHIPPING WEIGHT 99 MINUTES 99 SECONDS 120V 60Hz MICROWAVE 1 650W FROM 100 TO 1100W 10 LEVEL POWER IEC 705 TEST PROCEDURE 2 450MHz OM75PH 31 ESS COOLING FAN MOTOR 297 8 W x 1510 16 H x 151 16 D mm 58 4 lbs 64 4 lbs ...

Страница 8: ...r than high 7 Power Level Press this pad to set a power level other than high 8 Clock am p m Sets current time 9 Light On Night Off But ton 10 Turntable On Off Button 11 One Minute Press once for every minute of cooking at High power 12 My Choice Press to set non cooking feature 13 Custom Cook Press twice to program your favorite recipe Press once to cook with that recipe 14 Start Press to start c...

Страница 9: ... 5 Door Door Latches Handle Ventilation Holes Oven Light Safety Interlock Holes Control Panel Intake Holes Glass Tray Guide Roller 398mm 758 9mm 417 25mm 405mm 3 2 Features External Views ...

Страница 10: ... 6 3 3 Accessary Glass tray Roller guide ring Shelf Registration card Top template Installation Instructions Owner s menual Wall template Hardware kit Grease ﬁlters Charcoal ﬁlter exhaust adaptor shelf ...

Страница 11: ...talled to cabinet arrangements such as an island or peninsula It must be mounted to both a top cabinet and wall VENT BLOWER The vent or exhaust blower is located at the top of the oven It is shipped for vertical exhaust but can be changed to rear exhaust or recirculating See installation instrustions on how to change and or blower section on how to remove COOKTOP LIGHTS One 40 watt screw base inca...

Страница 12: ...cannot turn it The fan will automatically turn off when the internal parts are cool If may stay on for 30 minutes or more after the cooktop and microwave controls are turned off GRILLE REMOVAL The top full width grille is removable for service to some components such as oven light cavity T C O vent motor capacitor and fuse TO REMOVE GRILLE 1 Disconnect oven power 2 Remove screws 2 from grille oute...

Страница 13: ...lly NOTE1 When removing the magnetron make sure that it antenna does not hit any adjacent parts 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 CAUTION During replacement be certain R F anode gasket is in place around anode stub PERFORM MICROWAVE LEAKAGE TEST 4 1 Replacement of Hig...

Страница 14: ...assembly 4 3 2 Removal of Door E 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 4 3 3 Removal of Key Door Spring Remove pin hinge from Door E Detach spring from Door E and key door Door A Door C ...

Страница 15: ...lay between the inner door surface and oven front surface If the door assem bly is not mounted properly microwave energy may leak from the space between the door and oven 3 Do the microwave leakage test After replacement of the defective component parts of the door reassemble it and follow the instruc tions below for proper installation and adjustment so as to prevent an excessive microwave leakag...

Страница 16: ... motor screws 1 and lift up stirrer motor after turn left The stirrer is located on the upper side of the cavity The oven uses a top feed 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 4 Replace the clip if the clip head broken CLIP COVER STIRRER COVER STIRRER STIRRER ASSEMBLY STIRRER MOTOR ...

Страница 17: ...crew securing the control box assembly 4 8 2 Removal of P C B Assembly 1 Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit FPC of mem brane panel 2 Remove screws 3 securing the control circuit board 3 Lift up the control circuit board from the Ass y con trol box 4 When reconnecting the FPC connector make sure that the holes on the connector are properly en gaged wi...

Страница 18: ...dicate one ohm or less 4 A continuity check between each ﬁlament terminal and magnetron case should read open Magnetron Antenna Gasket Plate Cooling Fins 5 3 Magnetron 5 2 Low Voltage Transformer 5 1 High Voltage Transformer 1 Remove connectors from the transformer terminals and check continuity 2 Normal resistance readings are as follows SHV U1870A Secondary Filament Primary 79Ω 10 Shows Continui...

Страница 19: ...ing the Latch Body to the oven assem bly adjust the Latch Body by moving it so that the oven door will not have any play in it Check for play in the door by pulling the door assembly Make sure that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the Latch Body to the oven assembly 4 Reconnect to Monitor switch and check the continu ity of the monito...

Страница 20: ...ould be much slower TO TEST THE CAPACITOR 1 Remove grille discharge capacitor and disconnect one capacitor lead 2 Make appropriate capacitor check with analog meter needle should rise then fall cap is charging then discharging TO TEST BLOWER WINDINGS 1 Disconnect power and remove grille 2 Open control panel and discharfe capacitor 3 Disconnent two wires to run capacitor Continuity test across the ...

Страница 21: ... the oven cavity beside exhaust duct with a temperature rating of 248 F 120 C and is non resetable The cutout is tightly held to the top of the oven cavity by duct upper 5 9 2 Replacement of Flame Sensor Disconnect oven power Remove Grille Panel outer 1 Remove screws 3 securing the duct upper 2 Loft up the duct upper from the cavity 3 Disconnect two wire leads 4 Press the top of the thermal cutout...

Страница 22: ...were to open it would be difﬁcult to detect The only time it functions is during an overheat condition It will be normally open when checked with an ohmmeter 5 9 4 Bottom Thermal Cutout During a ﬁre on the stove the heat could be intense enough to close the Hood Thermal Cutout and force the fan to run While at moderate high temperature we do want it to run however during a ﬁre it is advantage ous ...

Страница 23: ...sor See Sensor Test Below SENSOR TEST QUICK TEST 1 With 2 ﬁngers touch and hold the following pads at the same time Auto Defrost and Sensor Reheat 2 Observe diagnostic number in display Numbers approximate 15 185 Normal verify with detection test 213 or Higher Sensor failed to open sensor unplugged wiring or smart board Less then 6 shorted sensor or smart board NOTE Only heater terminals H Black a...

Страница 24: ...water again with the thermometer and measure the temperature T2 5 Subtract T1 from T2 This will give you the water temperature rise T 6 The output power is obtained by the following formula Output Power 4 187 x 1000 x T 0 55xMcx T2 T0 41 Heating Time sec 38 Counting Time sec 4 187 Coefﬁcient for Water 1000 Water cc T Temperature Rise T2 T1 To Room Temperature Mc Cylindrical borosilicate glass weig...

Страница 25: ...oor keep the probe perpendicular to the areas making sure that the probe end at the base of the cone does not get closer than 5cm to any metal If it gets closer than 5cm erroneous readings may result 5 Measured leakage must be less than 4mW cm2 after repair or adjustment Maximum allowable leakage is 5mW cm2 4mW cm2 is used to allow for measurement and meter accuracy 1 Do not exceed the limited sca...

Страница 26: ...mer starts countdown but no microwave oscillation No heat while oven lamp and fan motor turn on 1 Off alignment of latch switches 2 Open or loose connection of high voltage circuit especially magnetron ﬁlament circuit NOTE Large contact resistance will bring lower magnetron ﬁlament voltage and cause magnetron to lower output and or intermittent oscillation 3 Defective high voltage components H V T...

Страница 27: ...e turntable motor Replace turntable motor Oven stops operation during cooking 1 Open or loose wiring of primary interlock switch 2 Operation of thermal cutout Magnetron Adjust door and latch switches Sparks 1 Metallic ware or cooking dishes touching on the oven wall 2 Ceramic ware trimmed with gold or silver powder also causes sparks Inform the customer Do not use any type of cookware with metalli...

Страница 28: ... P122 U003 P016 P015 P034 P097 P013 P014 P001 P039 P032 M015 M001 M035 M029 M023 P109 M021 M040 M039 M041 M206 P059 M049 B002 B001 B013 U004 U007 U001 P122 P123 M038 P121 M048 M036 U003 P012 P006 M024 M060 P090 P087 P088 P091 P089 D002 C004 D049 C082 C005 C009 C073 C003 C089 D024 D016 D011 D060 D004 D006 R066 P156 P007 P125 P125 H018 M017 D005 D019 D020 D026 C089 M219 ...

Страница 29: ...01 DE74 20002A TRAY COOKING GLASS T6 1 SA 1 1 P012 DE92 90242A ASSY HOOD DAMPER JVM 250BL OTR4 1 SA 1 2 P013 DE71 60051A COVER DAMPER FESN5 T0 22 W68 L248 4 1 SA 1 2 P014 DE72 40022A DAMPER MAIN SECC W28 L650 OTR4 T0 1 SA 1 1 M060 DE92 90505E ASSY HARD WARE SMH7175 1 SA 1 2 P087 DE60 10111A SCREW LAG MSWR W1 4X50 1 SA 1 2 P088 DE60 20022A BOLT TOGGLE MSWR W3 16X75 3 SA 1 2 P089 DE60 20066A BOLT FL...

Страница 30: ... 1 2 P109 DE63 00141A COVER MOTOR SMH7175 PP FB53 T2 5 1 SA 1 2 M017 DE96 00400B ASSY NOISE FILTER SN UF12B 250V20A OTR10 1 SA 1 1 P034 DE97 00366C ASSY DUCT UPPER SMH7175 HUMIDITY SENSOR 1 SA 1 2 P122 DE47 20059A THERMOSTAT PW 2N 8XV 125V15A V 120 0 23 1 SA 1 2 P030 DE59 50002A CAPACITOR MOTOR SH M 10UF 220V10UF DMB 1 SA 1 2 P097 DE97 00371B ASSY DUCT UPPER SUB JMV8186 HUMIDITY SE 1 SA 1 3 U003 D...

Страница 31: ...0 BLK 1 SA BE 1 3 D026 DE63 00139B COVER HANDLE SMH7175 PC T2 0 WHT 1 SA WE 1 3 D019 DE64 00761A HANDLE DOOR SMH7175 PC T2 0 BLK 1 SA BE 1 3 D019 DE64 00761B HANDLE DOOR SMH7175 PC T2 0 WHT 1 SA WE 1 1 C082 DE94 00933K ASSY CONTROL BOX SMH7175BE XAA BLACK V 1 SA BE 1 1 C082 DE94 00933L ASSY CONTROL BOX SMH7175WE XAA WHITE V 1 SA WE 1 2 C089 DE39 40673A WIRE HARNESS H 120V60HZ OTR6 ALL MODEL G 1 SA...

Страница 32: ...73 SCREW TAPPING FH 2S M4 L12 ZPC BLK MSWR 2 SA GRILLE 1 1 6002 001173 SCREW TAPPING FH 2S M4 L12 ZPC BLK MSWR 6 SA O PANEL 1 1 6006 001170 SCREW TAPPING TH WT TC M4 L10 ZPC YEL SWRCH18A 1 SNA EARTH N FILTER 1 1 6006 001170 SCREW TAPPING TH WT TC M4 L10 ZPC YEL SWRCH18A 1 SNA EARTH PCB 1 1 6006 001170 SCREW TAPPING TH WT TC M4 L10 ZPC YEL SWRCH18A 1 SNA H SENSOR EARTH 1 1 6006 001170 SCREW TAPPING...

Страница 33: ... 29 8 P C B Diagrams 8 1 P C B Diagrams This Document can not be used without Samsung s authorization ...

Страница 34: ...5S01 SOP 5P 63MIL SINGLE 100D 1 SA IC04 1 4 1203 001238 IC POSI ADJUST REG 78L15 TO 92 3P PLA 1 SNA IC02 1 4 1404 000230 THERMISTOR PTC 27OHM 20 1 SNA PTC1 1 4 1405 000001 VARISTOR 470V 1250A 14x7 5mm TP 1 SA ZNR1 1 4 2001 000009 R CARBON 20KOHM 5 1 8W AA TP 1 8X3 2MM 1 SNA R12 1 4 2001 000062 R CARBON 470OHM 5 1 4W AA TP 2 4X6 4MM 1 SNA R22 1 4 2001 000273 R CARBON 100KOHM 5 1 8W AA TP 1 8X3 2MM ...

Страница 35: ...TP 16x25 7 5 1 SNA C01 1 4 DE13 20009A IC KA7533 DIP 1 SNA IC03 1 4 2004 005092 R METAL 348KOHM 1 1 8W AA TP 1 8X3 2MM 1 SNA R30 1 4 2001 000780 R CARBON 470OHM 5 1 8W AA TP 1 8X3 2MM 1 SNA R02 1 4 2004 004255 R METAL 3 32KOHM 1 1 8W AA TP 1 68X3 81 1 SNA R25 1 4 2004 000517 R METAL 200KOHM 1 1 8W AA TP 1 8X3 2M 1 SNA R26 1 3 DE61 90164A HOLDER DIGITRON BLK NYLON 66 BLK MW437 1 SNA 1 3 DE68 02628A...

Страница 36: ... 32 9 Schematic Diagrams 9 1 Schematic Diagrams This Document can not be used without Samsung s authorization ...

Страница 37: ...ON C RC USA RV CONVECTION BUILT IN B RB USA RV BUILT IN USA Junior SJ SJ USA Junior MWO USA OTR SM SOLO H SMH USA OTR SOLO CONVECTION V SMV USA OTR CONVECTION EUROPE Ep oxy Cavity M SOLO 1 M1 EUROPE SOLO EPOXY CAVITY GRILL 2 M2 EUROPE GRILL EPOXY CAVITY EUROPE Ce ramic Enamel CE SOLO 1 CE1 EUROPE SOLO CERAMIC ENAMEL GRILL 2 CE2 EUROPE GRILL CERAMIC ENAMEL EUROPE Quartz GRILL G2 G2 EUROPE Quartz GR...

Страница 38: ...IUM LOW This function is used to cook the food slowly Close the door completely Press the Cancel but ton Press the Start button Contact the nearest Samsung after sales service cen ter Ground Ground problem may happen when the oven is placed in a humid area and the over is not grounded Ground is not provided by an extended electric outlet If the oven is placed in a humid area buy an electric wire i...

Страница 39: ...such as herbal remedies are not removed Error Errors are classiﬁed into the case which is out of order and the case which is not out of order Clean the inside of the oven Remove strange smell through the Deodorant button If the strange smell still remains place a piece of lemon on the turntable and operate the oven for 5 minutes by pressing the Deodorant button However the smells produced from the...

Страница 40: ...al is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law Samsung Electronics Co Ltd July 2005 Printed in Korea Code No DE68 03964A ...

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