Sanyo EM-C180US Service Manual Download Page 28 | Manualshive

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Sanyo EM-C180US Service Manual Download Page 28

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Printed in JAPAN

Wiring of High voltage Circuit

Brown(C Inside)

Wiring of Switches

Monitor switch

Interlock switch

Door sensing switch

Orange(C)

Brown

White

Yellow

Purple

Purple

Blue(NC Inside)

L i g h t
Blue

Orange

White

Pink(NO Inside)

(NO)

(NC)

White

Red wire

Transformer

Transformer

Red wire

Red wire

Red wire

Filament Winding

Filament Winding

Lower

Magnetron

Magnetron

Upper

Upper

Capacitor

Capacitor

Lower

Lower

Upper

Pink/Light Blue

Black

Brown

Blue/Blue

FRONT

FRONT

FRONT

FRONT

FRONT

BACK

BACK

BACK

BACK

BACK

March/99

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Summary of Contents for EM-C180US

Page 1: ...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 e i A ...

Page 2: ...In the area emitting the highest reading switch the meter to SLOW RESPONSE and take a reading for minimum of three 3 seconds We recommended the pattern outline shown below when the door surface is surveyed NOTE Periodically check to be sure that the probe tip is not worn or dirty The following U S standard applies to microwave ov ens 21 CFR 1030 10 Performance Standard for Microwave Ovens It requi...

Page 3: ...he door latch is securely locked 3 Tighten the lever stopper screws securely 4 Make sure the interlock monitor switch closes after the interlock switch opens when the door is opened very slowly according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 5 Make sure the interlock monitor switch opens before the interlock switch closes when the door is closed very slowly according to CHECKOUT PRO CEDURE ...

Page 4: ...ke dielectric or the door seal is dam aged 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 that there are no defective parts in the interlock mechanism f Make sure that there are no defective parts in the microwave generating and transmission assembly especially wave guide 4 The follow...

Page 5: ......

Page 6: ...een each filament terminal of the magnetron and the chassis ground with an ohm meter on highest scale COMPONENT MAGNETRON HIGH VOLTAGE TRANSFORMER 1 Measure the resistance With an ohm meter on R x1 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 b Filament winding to ground CHECKOUT PROCEDURE RES...

Page 7: ... Abnormal reading Indicates continuity or 10 meg ohms from the beginning Normal reading Indicate about middle position in one direction forward and infinite ohms in the reverse direction using ohm meter with a 9V battery NOTE Some digital meter may show more than 0 ohms or infinite ohms even in a forward direction because the low mea suring voltage of the meter does not allow the meter to pass thr...

Page 8: ... K ohms 1 meg ohms When checking the POWER key connect the ohm meter as illustrated below SWITCHES SEE Figure 1 on page 1 CHECKOUT PROCEDURES DOOR OPEN DOOR CLOSED INTERLOCK SWITCH DOOR SENSING SWITCH INTERLOCK MONITOR SWITCH Terminals COM and NO Terminals COM and NC CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires from the switches and check for the continuity of the switches connecting ...

Page 9: ... 2 TP 3 and ground See figure 16 on page 23 Note Proceed with the check of the control P C B to see if any one of the measured values is differ ent from the specified values CHECKOUT PROCEDURE RESULT Normal reading Connection Pin No Voltage V S105 3 to 4 DC 12 3 to 5 DC 16 3 to 1 DC 30 3 to 2 DC 35 S104 1 to 2 AC 2 4 Test point TP Voltage V TP 1 DC 5 TP 2 DC 12 TP 3 DC 16 TP 4 DC 35 WARNING When r...

Page 10: ... 6 Power circuit board See page 7 Control circuit board See page 7 Cooking ope ration will not start Oven does not heat up Door sensing switch See page 7 Interlock switch See page 7 Control circuit board See pages 7 23 See HINT on page 10 Shorted Replace Incorrect Reconnect Voltage incorrect Replace Resistance incorrect Replace Voltage incorrect Replace No continuty No continuty Voltage incorrect ...

Page 11: ... not touched within 1 minute after the door is opened or closed Oven stops heating Buzzer continuously beeps Blower motor will stop immediately Oven stops heating Buzzer does not beep Blower motor will stop immediately Oven stops heating Buzzer does not beep Blower motor is operated Oven stops heating Buzzer continuously beeps Blower motor will stop immediately Check for open circuit of thermistor...

Page 12: ... is warm in the following positions 1 Put your hand near the exhaust duct outside of the rear plate to feel the exhaust Never remove the cabinet and rear plate from the oven for your safety when you put your hand near exhausting duct 2 If air from the upper position of the duct is not warm the upper magnetron circuit is defective If air from the lower position of the duct is not warm the lower mag...

Page 13: ...age 1 when the primary and secondary interlock switches the relay RL 3 and RL 4 or the interlock monitor switch is adjusted or replaced If the interlock switch the relay RL 3 and RL 4 or the interlock monitor switch operate properly determine which of the following is defective control circuit board high voltage transformer high voltage capacitor high voltage diode or magnetron D REMOVING DISPLAY ...

Page 14: ...mit of 5mW c u For US After instaling the door check for microwave energy with a leakage detector and confirm that the leakage is the below the limit of 1 mW cm2 at 275cc waterload 5 mW cm2 at no load and 5 mW cm2 at 275cc water load without cabinet For CANADA I HOW TO RESET THE MEMORY OF ACCUMU LATIVE COOKING TIME 1 Push the keys step by step as follows CLEAR TIME 8 8 8 1 START START The display ...

Page 15: ...buzzer on Press START key All 4 digits will be flashing Press START key again The number 215 shows total cooking time in hours When number key other than 1 or 2 is pressed at step 4 0 appears in display window and the setting has been completed Note When number 2 is depressd at Step 4 above the displayed figure shows the number of door operation 100 e g 20 displayed 2000 door operations Press CLEA...

Page 16: ...tion the following consumable components should be replaced Maintenance light in window display indicates when accumulative cooking time reaches 1 250 hours 1 Magnetron Tube Part No 415 002 6408 2 Printed Circuit Board Relay Part No 617 137 3844 3 Switch base Assembly Part No 617 205 1208 4 Door Latch part No 617 068 1087 When more than 2 000 hours of accumulative cooking time is observed the foll...

Page 17: ...ent have special characteristics for safety and must be replaced using parts listed in this manual All service on M W ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a symbol ...

Page 18: ...ristics for safety and must be replaced using parts listed in this manual All service on M W ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a symbol ...

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Page 20: ... characteristics for safety and must be replaced usnig parts listed in this manual All service on M W ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a symbol ...

Page 21: ...ristics for safety and must be replaced using parts listed in this manual All service on M W ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a symbol ...

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Page 28: ...ellow Purple Purple Blue NC Inside L i g h t Blue Orange White Pink NO Inside NO NC White Red wire Transformer Transformer Red wire Red wire Red wire Filament Winding Filament Winding Lower Magnetron Magnetron Upper Upper Capacitor Capacitor Lower Lower Upper Pink Light Blue Black Brown Blue Blue FRONT FRONT FRONT FRONT FRONT BACK BACK BACK BACK BACK March 99 ...

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