Sanyo EM-G450 Service Manual Download Page 4 | Manualshive

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Summary of Contents for EM-G450

Page 1: ...and make repairs if necessary 1 Interlock operation 2 proper door closing 3 seal and sealing surfaces arcing wear and other damage 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 ...

Page 2: ...LOCK 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 in...

Page 3: ... SERVICING J1 Before the Dower is armlied 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 8 b Make sure the perforated...

Page 4: ...indicators Time Start Kg LB OZ A flashing indicator that prompts you to enter the desired cooking time start the oven or enter food weight 80 150 300 450 700 850 Power level indicators DIRECT ACCESS 8 a s H17 dim I 29 GzKD Timer v Down Weight A up KEYS 3 Clock Set 4 Direct Access menu keypad 5 Auto Defrost 6 Time adjust for Auto Defrost and Direct Access 7 Grill only 8 Dual 150W 9 Dual 450W 3 M w ...

Page 5: ... El 2 INDICATORS Auto Def Dual Grill Cooking mode indicators Time Start Kg LB OZ A flashing indicator that prompts you to enter the desired cooking time starl the oven or enter food weight 80 150 300 450 700 850 Power level indicators PI G45 I 3 4 5 6 7 8 9 Clock Set Direct Access menu keypad Auto Defrost Time adjust for Auto Defrost and Direct Access Grill only Dual 150W Dual 450 W 4 1 l m Figure...

Page 6: ...01 I L_ l I I w 11 I I 1 0 L d G Y Y NO v SC2 Y 1 COM HIGH VOLTAGE TRANSFORMER 1 1 l Y i MAGNETROii 2ti 2i8H R 1 I 1 T 1 HIGH VOLTAGE 1 1 L I HIGH VOLTAGE CONDENSER r d 2x500 PF 2xl 5uH PRIMARY INTERLOCK SWITCH DOOR SENSING SWITCH INTERLOCK MONITOR SWITCH THERMAL PROTECTOR FOR CAVITY THERMAL PROTECTOR ON WAVEGUiDE THERMAL PROTECTOR FOR HEATER MAIN RELAY POWER CONTROL RELAY HEATER RELAY BLOWER MOTO...

Page 7: ...rminals of the the magnetron with an ohmmeter on Rxl scale F l 2 Check for resistance Across the filament terminals of the magnetron and the chassis ground with an ohm meter on highest scale R Figure 6 1 Measure the resistance With an ohmeter on Rxl scale a Primary Winding b Filament Winding c Secondary Winding 2 Measure the resistance With an ohm meter on highest scale a Primary winding to ground...

Page 8: ...igital meters may DIODE show over even in a forward direction because low measuring voltage of meter does not allow the meter current to pass through Figure 9 the high voltage diode Abnormal reading Indicates continuity or infinite ohms in both directions Measure the resistance Across two terminals with an ohm meter on its highest scale Normal reading J Indicates continuity o P 0 Abnormal reading ...

Page 9: ...Value 1 J Less than More than 1K Ohms 1 MEG Q When checking the START key con nect Ohmmeter as illustration below TOP Ohm meter t n u TERMINALS OF FPC CONNECTOR Figure 11 CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires from the switches and check the continuity of the switches connecting an ohm meier to its terminals SWITCH Primary Interlock Door Sensing Interlock monitor CHECKOUT PROCED...

Page 10: ...onnector S1 I between Pin3 and Pin 5 PROBLEM after removing connector I l b S1 from control circuit 230 Volt I board I I b I I check istance Correct seating of Qo o pJ 0 connector S101 or Normal control I J replace control circuit Runs Control circuit board I Circuit Board 00 board Each ltage I Q J I I Check resistance of o 0 touch keyboard h See page 8 00 u Resistance Replace touch is correct key...

Page 11: ...eat up J a I I I 1 I I m J Contact OK Continuity OK Check contact of connector S102 F oorContac o Runs bfiiil I I I u No Continuity Adjust or Replace Normal Door Door Sensing Switch Sensing Switch I I Runs I I I I I Touch START key and measure II I voltage between the two wire b I I leads from primary windings of m UI H V transformer after removing I the wire leads from terminals of o volt Replace...

Page 12: ...iii CA n w 1 Cn I u 1 Q 1 1 11 ...

Page 13: ...transformer O 230 Set power level after removing the wire leads from at low terminals of H V transformer 230 Volt Replace control Normal control I circuit board circuit board I I Runs I 1 6 PROBLEM I Unit does not heat up even I I f display counts down when o 1 key is touched for m I Grill Cooking I I a I fil I Replace control I Resistance circuit board Normal control I circuit board I Runs I Chec...

Page 14: ...HE 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 microwav...

Page 15: ...ver may be d m ged vd n they are removed When re installing them replace them with new ones if they are damaged After installing the door in place check icr ii I G i z energy leakage with a leakage detector Microwave energy leakage must be below the limit of 5mW cmz G CHANGiNG POWER SUPPLY CORD See exploded view on page 16 1 Removing the earthing screw 2 Remove the power supply cord from the termi...

Page 16: ...4x1O 6 Thermostat Cavity H150 C 1 Cavity NZ 1 Cavity Arg 1 Gear Motor 1 SCRS TPGPAN4X8 2 Special Washer 1 Turntable Shaft 1 Roller 1 Glass Tray 1 Antenna Complete NZ 1 Antenna Complete Arg 1 Cavity Cover 1 6 2 Key No 14 15 16 17 18 19 20 21 22 SCR TPG TRS 4x6K I 1 I 15 21 22 Part No Description 6171670325 Heater Bracket 6171670301 Heater Ass y 6171670356 Reflective Plate 6171534917 Thermostat 122 ...

Page 17: ...X1O SCRS TPGPAN F S4X1 o PowerSupplyCord Terminal Cct Board Space Partition Capacitor Band Capacitor l 2uF DiodeAss y LeadWireAss y HV Fuse Blower Motor Magnetron Fan Duct Latch Lever J ty 1 9 4 1 1 1 1 1 1 1 1 1 1 1 1 1 t 14 ey 17 18 19 20 21 22 23 2 Q K 8 f t y9 3 11 k 3 6 4 7 Part No Description Q ty 6171675627 Lever Stopper 1 6171670523 Door Sensing Switch 1 6171676839 Interlock Monitor Switch...

Page 18: ...o 1 2 3 4 5 6 7 4 Part No Description Q ty 6171670615 6171563658 6171671438 _ 6171445435 6171667493 411 1565601 Transformer 1 Special Screw 2 Bottom Plate 1 Gear Motor Cover 1 Foot Cushion Assembly 4 Bottom Hinge 1 SCR S TPG PAN F S 4x1 O 3 i 17 ...

Page 19: ...70189 6171671292 617101 1487 617101 1494 411071 9104 w 2 8 1 Description Door Cover NZ Door Cover Arg Glass Door Panel Door Main Frame Supplied with inner Door Panel Plastic Inner Door Panel Hinge Choke Dielectric Door Latch Spring SCR TPG FLT 3x8 Q Y 1 1 1 1 1 1 1 1 2 6171806441 Door Ass y NZ 1 6171880847 Door Ass y Arg 1 18 ...

Page 20: ...1565502 A o 1 Description Control Sheet NZ Control Sheet Arg Touch Keyboard Control Frame P C B Complete Door Release Lever Spring SCRS TPGPAN F S4X1 c 1 1 1 1 1 1 1 1 Parl No 6171806410 6171847819 6171807448 6171833058 Description Operating Instructions NZ Operating Instructions Arg Cation Box Carton Box I my 1 1 1 1 These items not illustrated 19 ...

Page 21: ...10 CONTROL CIRCUIT BOARD EM G450 Model Version Spares No RL3 M Processor EM G450 NZ Arg 6171806502 No LC6248 o i I 1 k_J_l s TP4 TP5 y GND TPI TP2 ...

Page 22: ... 15 R 108 R 123 R 124 R 19 R 120 R 113 R 117 401 0125639 401 012 6953 401 012 6953 401 012 9231 401 014 2854 401 015 2655 401 015 4659 401 016 2555 401 016 3750 401 016 4757 401 016 9653 401 017 1735 401 018 2751 401 019 1852 401 020 1957 401 021 2953 401 021 4937 401 022 1836 lK l 4W 10K l 4W 10K l 4W IM l 4W 150 1 4w 1 8K l 4w 180K l 4w 220 1 4w 2 2K I 4W 22K l 4W 27 l 4W 2 7K l 4W 330 l 4w 3 9K...

Page 23: ...ITCH w L J i I G VO lA X llv sro MK l i Yxm 2 0 J IIIGI1 VOLTAGE llCCT FICn I R Z smrrlznl wl rL SI I 36P 5 1 1 nln 1 I T 1 F I VJ I nlnG 1 h i TC143 D1OI 1N4002 1 I I 1 OPEN 01 2NI09 10K OPEN 02 1 A5 A4 A3 A Al I Ek Er J J E za i r mm 1 W27 A2 tT132 10K 42 I IC3 up G 450 I Al fl131 IOK I o 41 AO o 1 I 55 32 1 c7t 5V T T 7 X I PD5M VL390 PT 1 1 1 1 1 vss VA iv 20 21 40 Slol IOP OPEN A 5V ...

Page 24: ...rvice manual was correct at the time of production SANYO Electric Manufacturing reserves the right to make changes to par or processes in order to maintain their policy of continuing improvement April 9300OO RZ Printed in U K SANYO Electric Manufacturing U K Ltd ...

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