SERVICE MANUAL STAINLESS STEEL EM-SL20NECO MICROWAVE OVEN WITH GRILL

FOREWORDRead this manual carefully, especially precaution on microwave energy, and follow the procedurestrictly. Careless servicing and testing may expose yourself to the microwave energy leakage.

FILE No.

PRECAUTIONS

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOIDPOSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

(a) Do not operate or allow the oven to be operated with the door open.(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or

other microwave source, and make repairs if necessary:(1) Interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and otherdamage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse.

(c) Before turning on microwave power for any service test or inspection 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 owner.

REFERENCE No. SM-2400005

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Product Code No.

EM-SL20NECO 1-437-574-25

TABLE OF CONTENTSAdjustment Procedures........................................1 Circuit Diagram.................................................... 4Specifications....................................................... 2 Test Procedures and Troubleshooting................. 5-12Power Output Measurement................................ 2 Disassembly Instructions..................................... 13-14Precautions and Repair Service Tips...................2 Exploded View and Parts list................................15-19Oven Control Panel..............................................3 Control Circuit Board............................................20

Overall Circuit Diagrams...................................... 21

1. ADJUSTMENT PROCEDURES

TO AVOID POSSIBLE EXPOSURE TO MICRO-WAVEENERGY LEAKAGE, THE FOLLOWING ADJUST-MENT OF THE INTERLOCK SWITCHES SHOULD BE MADE ONLY BY AUTHORISED SERVICE PERSONNEL

PRIMARY INTERLOCK SWITCH, DOOR SENSING SWITCH AND INTERLOCK MONITOR SWITCH ADJUSTMENT(Figure 1)

(1) Loosen 2 screws securing the lever stopper.(2) Adjust the lever stopper position so that it is pushed

up and pull forward until there is about zero gap.2-1. Between the lever and the switch body on

the door sensing switch.2-2. Between the lever and the switch body

on the interlock monitor switch. 2-3. Between the latch lever and the switch body

on the primary interlock switch.when the door latch is securely locked.

(3) Tighten the lever stopper screws securely.(4) Make sure the interlock monitor is closed after

the primary interlock switch opens when the door is opened very slowly, according to “CHECKOUT PROCEDURE FOR SWITCHES” on page 8.

(5) Make sure the interlock monitor is open before the primary interlock and secondary interlock switches close when the door is closed very slowly, according to “CHECKOUT PROCEDURE FORSWITCHES” on page 8.

(6) Make sure the microwave energy leakage is belowthe limit of the regulation (5mW/cm2) when measured with a detector. ( All service adjustments must be made for minimum energy leakage readings.)

-1-

CAUTIONMICROWAVE ENERGY

PERSONNEL SHOULD NOT BE EXPOSED TOTHE MICROWAVE ENERGY WHICH MAY RADI-ATE FROM THE MAGNETRON OR OTHERMICROWAVE GENERATING DEVICE IF IT ISIMPROPERLY USED OR CONNECTED. ALLINPUT AND OUTPUT MICROWAVE CONNEC-TIONS, WAVE GUIDES, FLANGES, AND GAS-KETS MUST BE SECURE. NEVER OPERATETHE DEVICE WITHOUT A MICROWAVE ENER-GY ABSORBING LOAD ATTACHED. NEVERLOOK INTO AN OPEN WAVE GUIDE ORANTENNA WHILE THE DEVICE IS ENERGISED.

Figure 1

Lever Stopper

Door SensingSwitch

Interlock MonitorSwitch

Primary InterlockSwitch

Screw Positions

Latch Lever

Door Latch

Lever

2. SPECIFICATIONS - EM-SL20NRated Power Consumption........ Micro 1450±10%W

Grill 1100+5/-10%W Dual 2500+5/-10%W(After 15mins.)

Microwave Output...................... 900W( Adjustable 90W through 900W )

Frequency.................................. 2,450MHz ± 50MHzPower Supply............................. 230V,50HzRated Current.............................Micro 6.3±10% Amps

Grill 4.75+5/-10% Amps Dual 10.9+5/-10% Amps (After 15mins.)

Safety Devices........................... Thermal Protector for Magnetron and Cavity, Open at 122˚C Thermal Protector for Heater, Open at 150˚C Fuse (Cartridge Type 8A)Primary Interlock SwitchDoor Sensing SwitchInterlock Monitor Switch

Timer.......................................... Electronic Digital Overall Dimensions.............490(W)x378(D)x322(H)mmOven Cavity Size.................304(W)x304(D)x248(H)mmTurntable Diameter.....................262mmNet Weight..................................Approx. 19.0Kg.

3. POWER OUTPUT MEASUREMENT

(1) Prepare 1000cc tap water in a wide mouthed Pyrex container.

(2) Stir thoroughly and note initial water temperature T1(˚C).

(3) Place container in centre of oven and operate for 60 seconds at full power.

(4) Remove container, stir thoroughly and note final water temperature T2 (˚C).

(5) Calculate power output= 70 x Temp. rise (T2-T1).

NOTE: This is only an approximate test method, notIEC705 test method to which the microwave oven hasbeen tested and rated.

-2-

4.PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARY

A.SINCE NEARLY 4,000 VOLTS EXIST IN SOME CIRCUITS OF THIS MICROWAVE OVEN, REPAIRS SHOULD BE CARRIED OUT WITH GREAT CARE

B.TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY LEAKAGE, THE FOLLOWING PRECAUTIONS MUST BE TAKEN BEFORE SERVICING.

(1)Before the power is applied.(a)Open and close door several times to make sure

the primary interlock switch, the door sensing switch, and the interlock monitor switch operate properly. (Listen for the clicking sound from switches). Make sure the interlock monitor switch is closed after the primary interlock switch is opened, when the door is opened. (See pages 1 and 7).

(b)Make sure the perforated screen and the dielectric choke of the door are correctly mounted.

(2)After the power is applied.(a)Open and close the door to see if the interlock

mechanism operates properly. (b)Check microwave energy leakage with a leakage

detector and confirm the energy leakage is below 5mW/cm2.

(3)Do not operate the unit until it is completely repaired, if any of the following conditions exists.

(a)Door does not close firmly against the cavity front.(b)The hinge is broken.(c)The choke dielectric or the door seal is damaged.(d)The door is bent or warped, or there is any other

visible damage to the oven that may cause microwave energy leakage. NOTE: Always keep the seal clean

(e)Make sure there are no defective parts in the microwave generating and transmission assembly.(especially waveguide).

(4)Following items should be checked after the unit is repaired.

(a)The interlock monitor switch is connected correctly and firmly.

(b)The magnetron gasket on the magnetron is properly positioned.

(c)Wave guide and oven cavity are intact ( no leakage of microwave energy).

(d)The door can be properly closed and the safety switches work properly.

(e)The oven must be stopped when the door is opened or the time is up.

The oven must not be operated with any of the above components removed or bypassed.

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14

KEYS:1. Display Window2. Function and Accessary Indicator3. Kitchen Timer Display4. Auto Program Key5. Auto-Defrost6. Kitchen Timer Key7. More/Less Key

8. Personal Menu Keys9. MIcro Power10. Delay Start11. Quick Start12. Clear/Stop13. Start14. Rotary Dial

-3-

5. OVEN CONTROL PANEL

Figure 1

Notes :A "beep tone" sounds when a "pad" on the control panel is touched, to indicate a setting hasbeen entered. When setting the controls you can keep your finger on a key until the desired setting is reached.

10

13

3

2

4

6

8

7

9

12

SC1 : PRIMARY INTERLOCK SWITCHSC2 : DOOR SENSING SWITCHSC3 : INTERLOCK MONITOR SWITCHMTCO/CFTCO : MAGNETRON/CAVITY FIRE

THERMAL CUT OUTHT : HEATER THERMOSTATRL1 : MAIN RELAYRL2 : POWER CONTROL RELAYRL4 : GRILL HEATER RELAYBM : BLOWER MOTORGM : GEAR MOTORL : CAVITY LAMPST : STEP DOWN TRANSFORMERIR : INRUSH RESISTOR

6.CIRCUIT DIAGRAM

EM-SL20N

MAGNETRON 2M-253H(IF)-N

2x500PF/2x1.5uH

1.14 F

HIGH VOLTAGE RECTIFIER

HIGH VOLTAGE CONDENSER

GM

BM

LNO

COM

HIGH VOLTAGE TRANSFORMER

L1,L2 = 1mHC1 = 0.22 FC2,C3 = 4700PFR = 1M

C1R

C3 C2

L1L2

230V ~50Hz

SC1

MTCO/CFTCO(122ûC)

NCCOM

SC3

RL2

2 1

S101

TOUCH KEYBOARD

CONTROL CIRCUIT BOARD

SC2

COM

NO

RL3

RL4

5

1

3

RL1

ST

S1

HHT(150ûoC)

FUSE (8A T)

H.V. FUSE 0.75A

IR (25 )

OVEN CONDITIONDOOR : OPEN

-4-

- The parts marked with are supplied witha high voltage which exceeds 250V.

- The parts marked with have special char-acteristics important for macrowave leakage.When replacing any of these parts use onlymanufacturer's specified parts.

COMPONENT CHECKOUT PROCEDURE RESULTS1) Check for resistance : Across the filament terminals of the Normal reading :the magnetron with an ohmmeter on Rx1 scale. Less than 1 ohm.

2) Check for resistance : Across the filament terminals of Normal reading :the magnetron and the chassis ground with an ohm-meter Infinite ohmson highest scale.

The chart below shows the firing times of the variable powerrelay for the EM-SL20 model. The table should be used as a means to check the magnetron is operating correctly andproducing any other power setting apart from full power.

7. TEST PROCEDURES AND TROUBLESHOOTINGCAUTION

- DISCONNECT THE POWER SUPPLYCORD FROM THE WALL OUTLETWHENEVER REMOVING THE CABINETFROM THE UNIT. PROCEED WITH THETESTS ONLY AFTER DISCHARGINGTHE HIGH VOLTAGE CAPACITOR ANDREMOVING THE LEAD WIRES FROMTHE PRIMARY WINDING OF THE HIGHVOLTAGE TRANSFORMER. ( SeeFigure 3 )

Figure 4A. TEST PROCEDURE

MAGNETRON

Figure 5

Figure 6

-5-

Filament Windings

Primary Windings

Secondary Winding

Power Level On Time/s % On Time(inc.’ramp up’ time)

High (900W) 30.0 100M-High(750W) 28.0 93Roast (450W) 18.0 60Simmer(300W) 13.0 43Warm (150W) 8.0 27Low (80W) 6.0 20

COMPONENT CHECKOUT PROCEDURE RESULTS

1) Measure the resistance : Normal readings :With an ohmeter on Rx1 scale.a. Primary Winding ; Approximately 1.75 ohms. b. Filament Winding ; Less than 1 ohm. c. Secondary Winding ; Approximately 90.11 ohms.

2) Measure the resistance : Normal readings :With an ohm-meter on highest scale.a. Primary winding to ground ; Infinite ohmsb. Filament winding to ground ; Infinite ohms

Note : Remove varnish ofmeasured point.

1) Measure the resistance : Across two terminals with an Normal reading :ohm-meter on highest scale Momentarily indicates several

ohms, and gradually returnsto 10 Meg-ohm.

Abnormal reading :Indicates continuity or 10MΩfrom the beginning.

Measure the resistance : Across two terminals with an Normal reading :ohm-meter on its highest scale. Indicates over 10MΩ in one

direction (forward direction) and infinite ohms in the reverse direction, using meter which is provided with a 9-volt battery.

NOTESome digital meters may show over even in a forward direction because lowmeasuring voltage of meter does not allow the meter current to pass through the high voltage diode.

Abnormal reading: Indicates continuity or infinite ohms in both directions.

HIGH VOLTAGECAPACITORincludingBLEEDERRESISTOR

Figure 8

HIGHVOLTAGEDIODE

-6-

Figure 9

HIGHVOLTAGETRANSFORMER

Figure 7

COMPONENT CHECKOUT PROCEDURE RESULTS

Measure the resistance : Across two terminals with an ohm-meter on its highest scale.

Normal reading :Indicates continuity.

Abnormal reading :Indicates infinite ohms.

Measure the voltage : Between test points TP-1,TP-2, and ground (See control circuit board on page 20 ).

NOTEProceed with the check of the step down transformer, tosee if any one of the measured values is different from the specified values

Figure 10

-7-

HV FUSE

Test TP-1 TP-2 point Voltage -5V -15V

DC DC

CONTROLCIRCUITBOARDCOMPLETE

SWITCH CHECKOUT PROCEDURES DOOR OPEN DOOR CLOSE

CHECKOUT PROCEDURE FOR SWITCHESDisconnect the lead wires from the switches and check the continuity of the switches, connecting an ohm-meter to itsterminals.

Primary Interlock

Door Sensing

Connect an ohm-meters leads to terminals "COM"and "NO" of switch

Interlock monitorConnect an ohm-meters leads to terminals "COM"and "NC" of switch

CAUTION : After checking the switches, make sure that the interlock monitor switch is properly connected according tothe CIRCUIT DIAGRAM on page 4.

-8-

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450w

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8.DISASSEMBLY INSTRUCTIONS

- OVEN MUST BE DISCONNECTED FROM ELECTRI-CAL OUTLET WHEN MAKING REPLACEMENTS,REPAIRS, ADJUSTMENTS, AND CONTINUITYCHECKS BEFORE PROCEEDING WITH ANY REPAIRWORK AFTER DISCONNECTING. WAIT AT LEAST 1MINUTE, UNTIL THE CAPACITOR IN THE HIGH VOLT-AGE AREA HAS FULLY DISCHARGED.- WHEN REPLACING ANY DOOR MICRO SWITCH,REPLACE WITH THE SAME TYPE SWITCH SPECI-FIED ON THE PARTS LIST.

A. REMOVING PRIMARY INTERLOCK SWITCH,DOOR SENSING SWITCH AND INTERLOCK

MONITOR SWITCH(See Figure 1 on page 1 and Figure 12 on this page)

(1) Remove 2 screws securing the lever stopper.(2) Disconnect all lead wires from the primary interlock

switch, door sensing switch and the interlock monitor switch

(3) Ease away the retaining clips holding the Primary interlock switch onto the lever stopper and remove.

(4) Remove the door sensing switch by reference to the step (3).

(5) Remove the interlock monitor switch by reference to step (3).

(6) Make the necessary adjustment, and make microwave energy leakage check according to “1. ADJUSTMENT PROCEDURES” on page 1. After the switch is replaced with a new one, check proper operation of it according to “CHECKOUT PROCEDURE FOR SWITCHES” on page 8.

Interlock Switch Replacement - when replacing faultyswitches, be sure switch retaining clips are not bent,broken or otherwise deficient in their ability to securethe switches in place.

B. REMOVING THE ANTENNA(See exploded view on page 15 )(1). Remove the screw securing the cavity cover to the

cavity.(2). Remove the antenna complete by slightly bending it

so the retension clips holding it slide out of the cavity wall.

C. REMOVING MAGNETRON(See exploded view on page 16 )(1) Remove the antenna complete according to

B. REMOVING THE ANTENNA.(2) Disconnect the 2 lead wires from the magnetron.(3) Remove 1 screw securing the duct to the

magnetron, and take out the duct.(7) Remove 4 screws securing the magnetron to

the waveguide.Take out the magnetron VERY CAREFULLY.

NOTES- When removing the magnetron, make sure that its dome does not hit any adjacent parts, or it may be damaged.

- After replacing the magnetron, be sure to check the microwave energy leakage with a leakage detector and confirm the leakage is below 5 mW/cm2 .

D. REMOVING FUSE(A) Remove the 8A fuse with a screwdriver.- When replacing the 8A fuse, be sure to use an exact

repair part.- If the 8A fuse blows immediately, check the primary

interlock switch and the interlock monitor switch (terminals “C” and “NC”) according to “CHECKOUT PROCEDURE FOR SWITCHES” on page 8, and make sure to check the microwave energy leakage according to “1. ADJUSTMENT PROCEDURE” on page 1, when the primary interlock switch or the interlock monitor switch is replaced.

- If the primary interlock switch is defective, replace not only the primary interlock switch but also the interlock monitor switch.

Then install a new 8A fuse.- If the primary interlock switch and the interlock monitor switch (terminals “C” and “NC”) operate properly, determine which of the following is defective: blower motor, turntable motor, high voltage transformer, high voltage capacitor, high voltage diode or magnetron.

- If the high voltage diode is defective , replace notonly the high voltage diode but also the HV fuse.

E. REMOVING DOOR

(1) Remove the 2 screws securing the upper hinge.(2) Tilt the top of the door toward you.(3) Lift up the door to remove it.

When replacing the door body or door assemblythe new door has to be set properly ensuring the correctdoor gap between door body and cavity front.

To set the new door;1. Mount door loosely on cavity.2. Before tigthening the top and bottom hinge screwsplace feeler gauges (the thickness varies for differentmodels- see table below) between the door assembly andthe cavity front plate between the top and bottom hinges.NB. Be careful not to scratch the door cover with the feel-er gauges.3. The door should then be aligned with the control baseand held firmly in place leaving a gap within 1-2mm.between the door cover and control base.

LEVER STOPPER

MICROSWITCH

RETAININGCLIPS

-13-

Figure 12

4. The hinge screws should then be tightened to hold thedoor in place, and the feeler gauges removed.5. The door gap should then be checked again using feelergauges.

Below is a table giving the door setting for the:-EM-SL20N

After setting the door gap, the door is closed with the doorlatch fully engaged and the screws securing the switchbase are loosened. The switch base is then eased to theright to pull the door face hard onto the front of themicrowave. The screws are then secured tight. To check ifthe operation has been carried out correctly push the doortop and bottom. Any movement should be minimal, andthe door should feel tight to the front face of themicrowave.Confirm that the operation has been success-fully carried out by depressing the door release lever untilthe microswitches are heard to operate. This occurs justbefore the door opens.

NOTES- After replacing the door, be sure to check that the

primary interlock switch, door sensing switch and the interlock monitor switch operate normally. (See page 1).

- After replacing the door check for microwave energy leakage with a leakage detector.Microwave energy leakage must be below the limit of 5mW/cm2.

F. DISASSEMBLYING DOOR( See exploded view on page 18 )

(1) Insert a thin flat blade screwdriver between the choke dielectric and the door mainframe and lift up the choke dielectric to release the hooks one by one.

(2) To remove door cover, remove the 2 screws securing the door cover to the door main frame

(3) Insert a thin flat blade screwdriver between the door cover and door mainframe and release the hooks one by one.

(4) To detach the glass door panel, insert a thin flat blade screwdriver between the door panel and door cover and release the clips one by one.

NOTES- The choke dielectric, the glass door panel and the

door cover may be damaged when they are removed. When re-installing them, replace them with new ones if they are damaged.

- After installing the door in place, check for microwave energy leakage with a leakage detector. Microwave energy leakage must be below the limit of 5mW/cm2.

G. CHANGiNG POWER SUPPLY CORD(See exploded view on page 16 )

(1) Removing the earthing screw.(2) Remove the power supply cord from the terminal

of PCB complete.

DOOR GAPLower Limit Upper Limit0.2mm. 0.8mm.

(3) Remove power cord from cavity assembly by lifting cord bush, moving it to the left and pulling itaway from cavity rear plate.

(4) Install the new power supply cord with the reverse procedure of above (1) to (3).

WARNINGFor changing the power supply cord, never use parts other than the following :

Part Name : Power Supply Cord AssemblyPart No : 617 213 2990 (Continental)

H. REMOVING TURNTABLE MOTOR COVER(Refer to Figures 13 and 14 below )

(1) Turn the unit and cut the 6 joints of the bottom plate and the motor cover using diagonal pliers (nipper). (See Figure 13 )

(2) Seperate the motor cover and the bottom plate.

NOTES- Bend the cut joints inside slightly for safety and be careful of the sharp edges.

RE-INSTALL :(1) Rotate the motor cover through 180˚.(2) Insert the edge of the motor cover into the tab on

the bottom plate.(3) Secure the motor cover by screwing it to the

bottom plate (See Figure 14 )Use screw 411 156 5502 (not supplied with oven)

Clip metal hereand at other 5 locations.

Retaining Lugs

Metal Tabs

Insert screw here tosecure.

Tabs fit intoretaining lugs.

Figure14

Figure13

-14-

-15-

1

2

2

3

2

4

5

10

12

11

9

8

7

6

13

15

16

2

8. EXPLODED VIEW AND PARTS LISTCAVITY PARTS

Key Part No. Description Q'tyNo.

13 617 221 0025 Heater Complete 114 617 202 4554 Thermostat, 150˚C 115 617 167 0431 Duct 116 617 169 6875 Frame Rear Plate 117 617 166 2153 Cook Net (H) 118 617 170 5058 Cook Net (L) 119 411 010 5600 SCR EVR PAN 3x6 1

Key Part No. Description Q'tyNo.

1 617 220 4376 Cabinet 12 411 156 5601 SCR TPG PAN+F+S 4x10 73 MO-A0730 Cavity 14 MO-S1121 Gear Motor 15 411 001 6005 SCR S-TPG PAN 4x8 26 MO-R0132 Special Washer 17 617 184 7659 Turntable Shaft 18 617 215 9560 Roller Base Ass'y 19 617 167 1421 Glass Tray 110 MO-A0737 Antenna Complete 111 617 169 8930 Cavity Cover 112 412 037 5901 SCR TPG TRS 4x6K 1

EM-SL20N

2

18

17

14

19

-16-

1

18

24

5

3

3

3

2

6a

7

8

9

10

1112

1314

15

16

17

20

21

193

22

3

25

26

27

4

28

3

SWITCHES AND MICROWAVE PARTS

Key Part No. Description Q'tyNo.

1 411 010 5600 SCR EVR PAN 3x6 12 411 156 5601 SCR TPG PAN+F+S 4x10 13 411 156 5502 SCR S-TPG PAN+F+S 4x10 64 411 171 9004 SCR TPG TRS+FLG 3x8 15 617 213 2990 Power Supply Cord 16a 617 179 0746 PCB Complete (N-F) 16b 423 027 8802 Fuse 17 617 167 0417 Space Partition 18 617 162 2041 Capacitor Band 19 MO-S0856 Capacitor 1.14uF 110 MO-S0947AS Diode Ass'y 111 617 234 1934 Lead Wire Ass'y 112 617 182 2915 HV Fuse 113 617 229 3769 Blower Motor 114 MO-S1118 Magnetron 115 617 112 1025 Fan 116 MO-M1211 Duct 1

EM-SL20NKey Part No. Description Q'tyNo.

17 617 195 3428 Latch Lever 118 617 189 0839 Lever Stopper 119 617 244 0651 Door Sensing Switch 120 617 244 0644 Interlock Monitor Switch 121 617 244 0651 Primary Interlock Switch 122 MO-S0587 Lamp Ass'y 124 617 202 4561 Thermostat V122˚C 125 617 220 1757 Stay Plate 126 617 218 9673 Special Screw 427 411 004 5609 NUT HEX M4 128 402 071 0703 Ceramic Resistor 1

MICROWAVE PARTS

Key Part No. Description Q'tyNo.

1 617 209 4557 Transformer 12 617 225 1721 Special Screw 23 617 225 6153 Bottom Plate Assembly 14 ------------------ Gear Motor Cover 1 5 617 144 5435 Foot Cushion Assembly 46 617 166 7493 Bottom Hinge 17 411 156 5602 SCR S-TPG PAN+F+S 4x10 18 617 102 7495 Special Screw 2

-17-

1

3

4

5

8

6

7

EM-SL20N

2

2

DOOR PARTS

Key Part No. Description Q'tyNo.

1 MO-A0748 Door Cover Assembly 12 MO-A0768 Door Main Frame(Supplied 1

with inner Door Panel)* 617 144 2472 Glass Inner Door Panel 1 3 617 167 0189 Hinge 14 617 167 1292 Choke Dielectric 15 617 195 3411 Door Latch 16 617 101 1494 Spring 1

* MO-A0756 Door Assembly 1

-18-

3

2

4

6

5

EM-SL20N

Inner Door Panel always supplied with Door Main Framebut can be ordered seperatelyquoting number below.

NB. Please refer to the detailed instructions for doorsetting on page 14 of the service manual beforechanging, adjusting or repairing these parts.

1

Key Part No. Description Q'tyNo.

1 MO-A0749 Control Base Assembly 12 617 236 6463 Knob Body 13 617 219 5520 PCB Complete 14 617 224 0275 PCB Complete 16 617 197 4836 PCB Complete 1 7 617 181 7980 Latch Lever 18 MO-A0747 Handle Assembly 19 617 188 3329 Spring 110 617 224 1067 Knob Assembly 111 411 064 6608 SCR TPG BIN 3x8 1112 617 231 3047 Special Nut (Metal) 1

* MO-P5257 Operating Instructions (EES) 1* MO-P5276 Carton Box 1

-19-

9

1

2

8

* These items not illustrated

CONTROL PANEL PARTS

EM-SL20N

311

4

7

610

12

11

13

10.CONTROL CIRCUIT BOARDEM-SL20N

Model Spares No. RL3 M.ProcessorEM-SL20N 617 224 0275 Yes IC11 LM8842

-24-

11. OVERALL CIRCUIT DIAGRAMEM-SL20N

-21-

IC 11 LM8842

P65

/AN

5P

64/A

N4

P61

/AN

1

C10

30.

01u

50V

R12

010

K

D11

1

51

3

V5T1

RL1

12

Q10

7D

TA14

3X

-15V

4.7K

10K

DO

OR

SE

NS

ING

SW

ITC

H

S1

3/5P

5306

2-03

10

PT

1 P

D5T

K-S

150

-5V

93 40

R11

5 3.

3K

R11

61K

BZ

12K

HZ

R11

910

K

C10

60.

01u

50V

19

XIN

XO

UT

P50

P47

P54

P56

/TO

UT

AV

SS

VS

S

P63

/AN

3

P62

/AN

2

D11

1N40

02 X

4

C12

47u

/10V

-5V

-15V

D15

1N40

02

C13

470u

/35V

ZD

11R

D5.

6ES

B3

R11

4.7K

C15

1000

P/5

0V

C16

0.01

u/5

0V

D12

C14

0.01

u/5

0V

D13

D14

Q11

A56

4A

R12

2.7

K

C11

470u

/35V

R1

3 R1

4

ZD

13

ZD

12

Q12

B12

3B

RD

7.5E

SB

3 X

2

C10

70.

1u/2

5V

OP

EN

R12

110

KR

122

100K

R12

310

0KR

124

100K

-5V

98 99 2

VL3

VL2

VL1

R11

710

K

-5V

Q10

8 A

564A

R11

810

K

OP

EN

OP

EN

OP

EN

15 16 17

OP

EN

23 25 26

OP

EN

D10

31N

4002

OP

EN

18

OP

EN

OP

EN

OP

EN

-5V

R10

5 4.

7K

5 6 9

P57

11 10P

60/A

N0

P43

P41

P40

P53

P52

P51

P42

/INTO

P55

/CN

TR

1V

CC

VR

EF

13 91 9224

2 1D

102

S10

252

67-0

3A

R10

410

K

C10

20.

01u

/50V

R14

0 4.

7K

1 2 3

S30

1 E

H3P

R30

410

KC

302

1000

P/5

0V

R30

310

K

R30

1 10

K

R30

2 10

K

-5V

C30

110

00P

/50V

97-9

490

-68

67-5

855 54 53 52 51 50 49 48 47 46

1

-4 5

-27

39-2

8

CO

M1-

4 LCD1 H4062

C

OM

0-3

S

EG

0-22

SE

G23

-34

P11

/SE

G35

P12

/SE

G36

P13

/SE

G37

P14

/SE

G38

P15

/SE

G39

P16

P17

P20

P21

P22

Q10

1D

TA12

3X2.

2K

10K

-5V

3938R

S1

4MH

Z

R10

356

0K

D10

1C

101

1µ /50V

R10

210

K

ZD

101

RD

3.9

ES

B2

R10

11K

RS

T35

RL2

OP

EN

7 8

TIM

ER

SW

SW

BO

AR

D(1

2700

)

OP

EN

OP

EN

OP

EN

OP

EN

OP

EN

LED

1 L

ED

2 L

ED

3 L

ED

4 L

ED

5

R15

210

KR

151

390Ω

R15

31.

2KQ

151

A56

4A

27P

77

-15V

3 4 34

-5V

P67

/AN

7

P66

/AN

6

P70

R52

12K

R54

12K

R56

12K

37 36P

80P

81O

PE

NO

PE

N

-5V

4 23 12

OP

EN

OP

EN

C1

C2

1 100

OP

EN

OP

EN

33 32 31 30 29 28

OP

EN

OP

EN

OP

EN

OP

EN

OP

EN

OP

EN

P71

P72

P73

P74

P74

P75

P76P23

P24

P24

P26

P27

45 44 43 42 41

R12

9 10

K

R12

810K

R12

710K

R12

6 10

K

R12

5 10

K

R10

110

0K x

5

R13

0R

131

R13

24.

7K X

5

53

14

2

1214

1613

15

7 9 11 13 156 8 10 12 14 16

10 8 6 4 211 9 7 5 3 1

SW

2

SW

9-2

SW

10

SW

11S

W6

SW

5

SW

4

SW

3

SW

13

SW

12S

W8

SW

9-1

SW

14

DE

LAY

STA

RT

A.D

EF

MIC

RO

PO

WE

R

QU

ICK

STA

RT

GR

ILL

KIT

CH

EN

TIM

ER

MO

RE

/LE

SS

CLE

AR

/S

TOP

STA

RT

AU

TO

GR

ILL

450W

GR

ILL

150W

S10

152

045-

1645

S10

352

044-

1645

SW

BO

AR

D(3

1900

)

MA

GN

ET

RO

N

2x50

0PF

/2x1

.5uH

HIG

H V

OLT

AG

E R

EC

TIF

IER

HIG

H V

OLT

AG

E C

ON

DE

NS

ER

GM

BM

CL

HIG

H V

OLT

AG

E T

RA

NS

FO

RM

ER

MQ

/OV

EN

TH

ER

MO

PR

IMA

RY

SW

ITC

H

230V

50H

z

C1 R C3

C2

L1,L

2 =

1m

HC

1 =

0.2

2µF

C2,

C3

= 4

700P

FR

= 1

MΩ

L1

L2

MO

NIT

OR

SW

ITC

H

HE

ATE

RT

HE

RM

O

GR

ILL

HE

AT

ER

FU

SE

8A(T

)

RL4

CA

PAC

ITO

R

2.2K

10K

Q10

2D

TA12

3Y D10

7D

104

R10

6 R

107

18Ω

x 2

MQ

RL2

RL3

INR

US

HR

ES

ISTO

RQ

105

C17

41R

114

150Ω

4.7K

10K

Q10

6D

TA14

3X

R11

24.

7KR

113

47K

14

CL

RL1

D11

0

OP

EN

OP

EN

2.2K

10K

Q10

4D

TA12

3Y

D10

9D

106

R11

0 R

111

18Ω

x 2

GR

ILL

HE

ATE

R

2.2K

10K

Q10

3D

TA12

3Y D10

8D

105

R10

8 R

109

18Ω

x 2

INR

US

H222120

P46

P45

P44

2002-09

Please NoteAll the information that appears in this service manual was correct at the time of production. SANYO Electric Companyreserves the right to make changes to parts or processes in order to maintain their policy of continuing improvement.