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Amana RCS10A Service Manual Download Page 31

5-13

CONDITION

CHECK

RESULT

CAUSE

REMEDY

1. Fuse blows.

Continuity.

No continuity.

Continuity.

Shorted contact at
the primary switch.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY2) of
P.C.B Assembly.

No continuity.

Malfunction of the
monitor switch.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY2) of
P.C.B Assembly.

Check continuity
of monitor
switch (with
door closed).

Check continuity
of primary
switch (with
door opened).

Replace fuse

Continuity.

Malfunction of
secondary switch.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY2) of
P.C.B Assembly.

No continuity.

Check continuity
of secondary
switch (with
door opened).

2. Fuse does not

blow.

No continuity.

Continuity.

No continuity.

Defective power
supply cord.

Replace power
supply cord.

Defective
thermostat.

Replace
thermostat.

Check continuity
of thermostat.

Check continuity
of power  supply
cord.

(TROUBLE 2) Oven does not operate at all, Display window does not display any figures, 

and no input is accepted.

NOTE : All these switches must be replaced at the same time. Refer to page 5-7, 5-8

Normal.

Normal.

Abnormal.

Defective high
voltage capacitor.

Replace high
voltage capacitor.

Set is good condition
(defective fuse only)

Fuse blows again

Defective high volt-
age transformer.

Replace high volt-
age transformer.

Disconnect one
side of the wire
lead connected
from transformer
to the high voltage
capacitor and
operate the unit.

Measure to
resistance high
voltage capacitor
(refer to page 5-9)

CONDITION

CHECK

RESULT

CAUSE

REMEDY

1. Fuse blows.

Continuity.

No continuity.

Continuity.

Shorted contact at
the primary switch.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY3 ) 
of P.C.B Assembly.

No continuity.

Malfunction of the
monitor switch.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY3) 

Check continuity
of monitor
switch (with
door closed).

Check continuity
of primary
switch (with
door opened).

Replace fuse

Continuity.

Malfunction of
secondary switch.

Replace fuse,
primary, monitor,
secondary
switches, and
RELAY(RY3) 
of P.C.B Assembly.

No continuity.

Check continuity
of secondary
switch (with
door opened).

2. Fuse does not

blow.

No continuity.

Continuity.

No continuity.

Defective power
supply cord.

Replace power
supply cord.

Defective
thermostat.

Replace
thermostat.

Check continuity
of thermostat.

Check continuity
of power  supply
cord.

(TROUBLE 2) Oven does not operate at all, Display window does not display any figures, 

and no input is accepted.

NOTE : All these switches must be replaced at the same time. Refer to page 5-7, 5-8

Normal.

Normal.

Abnormal.

Defective high
voltage capacitor.

Replace high
voltage capacitor.

Set is good condition
(defective fuse only)

Fuse blows again

Defective high volt-
age transformer.

Replace high volt-
age transformer.

Disconnect one
side of the wire
lead connected
from transformer
to the high voltage
capacitor and
operate the unit.

Measure to
resistance high
voltage capacitor
(refer to page 5-9)

1. Fuse blows.

Continuity.

No continuity.

Continuity.

Shorted contact at
the primary switch.

Replace fuse,
primary, monitor,
secondary
switches, and

No continuity.

Malfunction of the
monitor switch.

Replace fuse,
primary, monitor,
secondary
switches, and

Check continuity
of monitor
switch (with
door closed).

Check continuity
of primary
switch (with
door opened).

Replace fuse

Continuity.

Malfunction of
secondary switch.

Replace fuse,
primary, monitor,
secondary
switches, and

No continuity.

Check continuity
of secondary
switch (with
door opened).

2. Fuse does not

blow.

No continuity.

Continuity.

No continuity.

Defective power
supply cord.

Replace power
supply cord.

Defective
thermostat.

Replace
thermostat.

Check continuity
of thermostat.

Check continuity
of power  supply
cord.

Oven does not operate at all, Display window does not display any figures, 

and no input is accepted.

Normal.

Normal.

Abnormal.

Defective high
voltage capacitor.

Replace high
voltage capacitor.

Set is good condition
(defective fuse only)

Fuse blows again

Defective high volt-
age transformer.

Replace high volt-
age transformer.

Disconnect one
side of the wire
lead connected
from transformer
to the high voltage
capacitor and
operate the unit.

Measure to
resistance high
voltage capacitor
(refer to page 5-9)

1. Fuse blows.

Continuity.

No continuity.

Continuity.

Shorted contact at
the primary switch.

Replace fuse,
primary, monitor,
secondary
switches, and

No continuity.

Malfunction of the
monitor switch.

Replace fuse,
primary, monitor,
secondary
switches, and

Check continuity
of monitor
switch (with
door closed).

Check continuity
of primary
switch (with
door opened).

Replace fuse

Continuity.

Malfunction of
secondary switch.

Replace fuse,
primary, monitor,
secondary
switches, and

No continuity.

Check continuity
of secondary
switch (with
door opened).

2. Fuse does not

blow.

No continuity.

Continuity.

No continuity.

Defective power
supply cord.

Replace power
supply cord.

Defective
thermostat.

Replace
thermostat.

Check continuity
of thermostat.

Check continuity
of power  supply
cord.

Normal.

Normal.

Abnormal.

Defective high
voltage capacitor.

Replace high
voltage capacitor.

Set is good condition
(defective fuse only)

Fuse blows again

Defective high volt-
age transformer.

Replace high volt-
age transformer.

Disconnect one
side of the wire
lead connected
from transformer
to the high voltage
capacitor and
operate the unit.

Measure to
resistance high
voltage capacitor
(refer to page 5-9)

1. Fuse blows.

Continuity.

No continuity.

Continuity.

Shorted contact at
the primary switch.

Replace fuse,
primary, monitor,
secondary
switches, and

No continuity.

Malfunction of the
monitor switch.

Replace fuse,
primary, monitor,
secondary
switches, and

of P.C.B Assembly.

Check continuity
of monitor
switch (with
door closed).

Check continuity
of primary
switch (with
door opened).

Replace fuse

Continuity.

Malfunction of
secondary switch.

Replace fuse,
primary, monitor,
secondary
switches, and

No continuity.

Check continuity
of secondary
switch (with
door opened).

2. Fuse does not

blow.

No continuity.

Continuity.

No continuity.

Defective power
supply cord.

Replace power
supply cord.

Defective
thermostat.

Replace
thermostat.

Check continuity
of thermostat.

Check continuity
of power  supply
cord.

Normal.

Normal.

Abnormal.

Defective high
voltage capacitor.

Replace high
voltage capacitor.

Set is good condition
(defective fuse only)

Fuse blows again

Defective high volt-
age transformer.

Replace high volt-
age transformer.

Disconnect one
side of the wire
lead connected
from transformer
to the high voltage
capacitor and
operate the unit.

Measure to
resistance high
voltage capacitor
(refer to page 5-9)

Summary of Contents for RCS10A

Page 1: ...ave Oven Service Manual RCS10MPA CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL RCS10MPSA RFS12MPSA RFS12G RCS10PBDA RCS10A RCS10MPA RCS10MPSA RCS10SW2A RFS12SW2A RFS12MPSA RFS12G ...

Page 2: ...eration 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 alignment integrity and connections D Any de...

Page 3: ...OCK CONTINUITY TEST 5 7 COMPONENT TEST PROCEDURE 5 8 TROUBLE SHOOTING 5 11 CONTENTS Page SAFETY PRECAUTIONS Inside front cover SPECIFICATIONS 1 1 CAUTIONS 2 1 INSTALLATIONS 3 1 OPERATING INSTRUCTIONS 4 1 COOKING DISPLAYS 4 7 OPERATION 4 8 PROGRAMMING 4 9 USER OPTIONS 4 11 SCHEMATIC DIAGRAM 4 10 CIRCUIT DESCRIPTION 4 12 SERVICE INFORMATION 5 1 TOOLS AND MEASURING INSTRUMENTS 5 1 MICROWAVE LEAKAGE T...

Page 4: ...ave power IEC60705 1 200 Watts full microwave power IEC60705 2 450 MHz 2M248 2M282 0 60 min 207 8 W x 123 8 H x 151 2 D 71 lbs approx 80 lbs approx Touch Control System Clock 00 60 Microwave Power for Variable Cooking Power level HIGH Full power throughout the cooking time 70 Med High approx 70 of Full power 50 Med Low approx 50 of Full power 20 Low approx 20 of Full power Time chart 1 1 This micr...

Page 5: ... operation of the microwave oven requires that the magnetron be assembled to the waveguide and cavity Never operate the magnetron unless it is properly installed Be sure that the magnetron gasket is properly installed around the dome of the tube whenever installing the magnetron 2 1 CAUTIONS Unlike other appliances the microwave oven is high voltage and high current equipment Though it is free fro...

Page 6: ...wave oven as far away as possible from TV RADIO COMPUTER etc to prevent interference 7 Place the microwave oven on a stardy and flat surface GROUNDING INSTRUCTIONS For personal safety this appliance must be fully grounded at all times In the event of an electrical short circuit grounding reduces the risk of electrical shock The plug must be plugged into an outlet that is properly installed and gro...

Page 7: ... Pads 1 0 HOLD 0 DEFROST 20 MEDUIM 50 MED HI 70 STOP RESET START 4 1 OPERATING INSTRUCTIONS Window Door Screen Safety Door Lock System Electronic Control Door Open Button Turntable Rotating Ring Splatter Shields 1 2 3 4 5 6 7 8 9 0 HOLD 0 DEFROST 20 MEDIUM 50 MED HI 70 TIME ENTRY STOP RESET START FEATURES CONTROL PANEL Display Some items in display can be seen but will not glow Pads Use to enter h...

Page 8: ...t full or reduced power If oven power level is set to 0 oven does not heat for programmed time If no power level is selected oven operates at 100 power Use to exit programming mode and stop cooking during cooking cycle Use to start Manual Time Entry program or restart interrupted cooking cycle Use to advance to next user option Use to save times and power levels when programming pads RCS10MPA TIME...

Page 9: ...ntrol Door Open Button Turntable Rotating Ring Splatter Shields 1 2 3 4 5 6 7 8 9 0 HOLD 0 DEFROST 20 MEDIUM 50 MED HI 70 TIME ENTRY STOP RESET START FEATURES CONTROL PANEL Display Some items in display can be seen but will not glow RCS10MPSA RFS12MPSA 8 9 0 Window Door Screen Electronic Control Safety Door Lock System Pads Use to enter heating time without changing preprogrammed number pads Use t...

Page 10: ...nd power levels when programming TIME ENTRY Pads 1 0 HOLD 0 DEFROST 20 MEDUIM 50 MED HI 70 STOP RESET START OPERA TING INSTRUCTIONS Window Door Screen Safety Door Lock System Electronic Control Door Open Button Turntable Rotating Ring Splatter Shields 1 2 3 4 5 6 7 8 9 0 HOLD 0 DEFROST 20 MEDIUM 50 MED HI 70 TIME ENTRY STOP RESET START 4 4 FEATURES CONTROL PANEL Display Some items in display can b...

Page 11: ... Lock System Electronic Control Door Open Button Turntable Rotating Ring Splatter Shields 1 2 3 4 5 6 7 8 9 0 HOLD 0 DEFROST 20 MEDIUM 50 MED HI 70 TIME ENTRY STOP RESET START FEATURES CONTROL PANEL Display Some items in display can be seen but will not glow Pads Use to enter heating time without changing preprogrammed number pads Use to begin heating with preprogrammed times and power levels or t...

Page 12: ...Screen Electronic Control Safety Door Lock System 4 6 OPERATING INSTRUCTIONS FEATURES CONTROL PANEL Display Some items in display can be seen but will not glow Pads Use to enter heating time without changing preprogrammed number pads Use to begin heating with preprogrammed Use to enter times for Manual Time Entry times and power levels or to enter times for Manual Time Entry cooking cooking Use to...

Page 13: ...section of manual for programming procedure 4 7 Cooking Displays Shows when power is connected to oven Open and close door to clear READY shows when oven control will accept entries Appears after oven door is opened and closed 33 33 shows heating time When more than 1 heating stage is programmed total time for all stages displays COOK shows when oven is operating 20 indicates the microwave power l...

Page 14: ...ds when heating timing elapses Operating QTY 2X Pads QTY 2X 2 Press desired number pad Example press 18 sec Preprogrammed Times and Cook Level All preprogrammed pads arrive set at full power Option Single Digit Pads 11 12 13 14 15 16 17 18 19 20 Heating Times 10 sec 20 sec 30 sec 45 sec 1 min 1 30 min 2 min 3 min 4 min 5 min Heating Times 20 sec 40 sec 1 min 1 30 min 2 min 3 min 4 min 6 min 8 min ...

Page 15: ...n memory Repeat step 3 6 to program additional pads 7 Press STOP RESET pad or close oven door to exit programming mode Multiple Heating Stages Follow instructions below to program oven to perform 3 consecutive heating cycles without interruption 1 Open oven door If door is closed or STOP RESET pad is pressed before finishing programming sequence oven exits programming mode 2 Press pad 1 for approx...

Page 16: ...oor is opened during cycle 7 OP 70 Allows 10 minutes of heating time Maximum Heating OP 71 Allows 60 minutes of heating time Time 8 OP 80 Allows use of preprogrammed pads only Manual Operation OP 81 Allows use of manual time entry and preprogrammed pads Optional Program Pad Option Indicator Number Selected Optional Program Pad Option Indicator Number Selected Numbered Pads Display Options Factory ...

Page 17: ...SCHEMATIC DIAGRAM 4 11 ...

Page 18: ...s AC is generated in the secondary of the high voltage transformer which is increased by the action of the high voltage diode and charging of the high voltage capacitor The negative 4 000 Volts DC is applied to the filament of the magnetron WHEN THE OVEN IS SET AT ANY LEVEL EXCEPT MAXIMUM The micom controller controls the ON OFF time of relay 3 by the applied signal to vary the average output powe...

Page 19: ...tion leakage MEASURING MICROWAVE ENERGY LEAKAGE Pour 275 15cc of 20 5 C 68 9 F water in a beaker which is graduated to 600 cc and place the beaker on the center of the turntable Set the energy leakage monitor to 2 450 MHz and use it following the manufacturer s recommended test procedure to assure correct result When measuring the leakage always use the 2 inch 5cm spacer supplied with the probe Op...

Page 20: ...e test probe must be removed no faster than 1 inch sec 2 5 cm sec along the shaded area otherwise a false reading may result The test probe must be held with the grip portion of the handle A false reading may result if the operator s hand is between the handle and the probe When testing near a corner of the door keep the probe perpendicular to the surface making sure the probe horizontally along t...

Page 21: ... the following formula 4187 x T T is measured while the microwave generator is operating at full power Magnetron filament heat up time is not included about 3 sec The water is stirred to equalize temperature throughout the vessel prior to measuring the final water temperature Stirring devices and measuring instruments are selected in order to minimize addition or removal of heat A OUTER CASE REMOV...

Page 22: ...or switch and secondary switch operate normally 2 After replacing the door check for microwave energy leakage with a survey meter Microwave energy must be below the limit of 4 mW cm2 with a 275 ml water load 3 When mounting the door assembly to the oven assembly be sure to adjust the door assembly parallel to the chassis Also adjust so the door has no play between the inner door surface and oven f...

Page 23: ...for microwave leakage with a survey meter around the Microwave energy must be below the limit of 5 mW cm2 With a 275 ml water load Make sure that gasket is rigidly attached to the magnetron To prevent microwave leakage tighten the mounting screws properly making sure there is no gap between the waveguide and the magnetron G REMOVING THE STIRRER FAN MOTOR 1 Disconnect the leadwire from the stirrer ...

Page 24: ...ary monitor and secondary switches operate properly by following the continuity test procedure PRIMARY SWITCH ADJUSTMENT DIRECTION MONITOR SWITCH SECONDARY SWITCH H V Diode H V Capacitor Suction Guide Fan Motor ASS Y H V Transformer H HIGH VOLTAGE TRANSFORMER REMOVAL 1 Discharge the high voltage capacitor 2 Disconnect the leadwire from magnetron high voltage transformer and capacitor 3 Remove the ...

Page 25: ...or is closed meter should indicate an closed circuit When the secondary switch operation is abnormal make the necessary adjustment or replace the switch only with the same type of switch C MONITOR SWITCH TEST Disconnect the wire lead from the monitor switch Connect the ohmmeter leads to the common COM and normally closed NC terminals of the switch The meter should indicate closed circuit in the do...

Page 26: ... 120 ohm Less than 1 ohm Approx 0 1 0 3 ohm Approx 70 90 ohm Less than 1 ohm CAUTIONS 1 DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER SEE PAGE 2 1 2 ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY...

Page 27: ...e Measure the continuity Forward Ohm meter scale Rx10000 Measure the continuity Reverse Ohm meter scale Rx10000 Normal Momentarily indicates several ohms and then gradually returns to infinite Normal Infinite Normal Continuity Abnormal Infinite Normal Infinite Abnormal Continuity NOTE When testing the magnetron be sure to install the magnetron gasket in the correct position and be sure that the ga...

Page 28: ...ec 7 9 sec 3 sec 8 10 sec 2 sec 9 11 sec 1 sec 10 12 sec 0 sec Normal Approx 3 3 5 kohm Abnormal Infinite or several ohm NOTE A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION WHEN REMOVING THE WIRE LEADS FROM THE PARTS BE SURE TO GRASP THE CONNECTOR NOT THE WIRES Relay 3 BLOWER MOTOR Wire leads removed M...

Page 29: ... CONDITION Microwave oven does not work Inserting many plugs into one outlet and using them at the same time blown fuse or breaker Microwave oven plug is not inserted tightly Output power is too low Low AC input voltage Food temperature is too low Display CALL SERVICE Using metallic ware and allowing it to touch the oven wall Sparks occur Inconsistent intensity of microwave by their characteristic...

Page 30: ... does not turn on after setting cooking cycle 11 Display time of day does not reappear when cooking is finished 5 12 TROUBLE 1 The following visual conditions indicate a probable defective control circuit CONDITION CHECK RESULT CAUSE REMEDY 1 No input can be programmed Continuity No continuity Defective PCB assembly Loose connection Replace PCB assembly Connect them tightly Check the conn ection b...

Page 31: ...ry switches and Check continuity of monitor switch with door closed Check continuity of primary switch with door opened Replace fuse Continuity Malfunction of secondary switch Replace fuse primary monitor secondary switches and No continuity Check continuity of secondary switch with door opened 2 Fuse does not blow No continuity Continuity No continuity Defective power supply cord Replace power su...

Page 32: ... continuity Abnormal Check blower motor Defective blower motor Replace blower motor Abnormal Normal Check oven lamp Defective oven lamp Replace oven lamp Defective secondary switch Replace secondary switch Check continuity of secondary switch with door closed Check the con nection between CN1 connector and PCB assembly TROUBLE 3 Display shows all figures set but oven does not start cooking while d...

Page 33: ...sure to install the magnetron gasket in the correct position and in good condition CONDITION CHECK RESULT CAUSE REMEDY No microwave oscillation No continuity Continuity Abnormal Defective high voltage transformer Replace high voltage transformer Normal Defective PCB assembly Replace PCB assembly Disconnect the wire leads from and check continuityofrelay3 Check high vol tage transformer Output is f...

Page 34: ...DOOR PARTS CONTROL PANEL PARTS LATCH BOARD PARTS BASE PLATE PARTS OVEN CAVITY PARTS INTERIOR PARTS 6 1 EXPLODED VIEW INTRODUCTION MODEL RCS10PBDA RFS12G EV ...

Page 35: ...6 2 EXPLODED VIEW MODEL RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12MPSA RFS12SW2A DOOR PARTS CONTROL PANEL PARTS LATCH BOARD PARTS BASE PLATE PARTS INTERIOR PARTS OVEN CAVITY PARTS INTRODUCTION EV ...

Page 36: ... EV 6 3 1384 W136 1006 1007 W108 W105 1386 1009 W207 W206 1385 1004 1005 1013 1000 1002 DOOR PARTS MODEL RCS10A RCS10MPA RCS10MPSA RCS10PBDA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G ...

Page 37: ...6 4 2012 2000 2400 2005 2006 2381 W130 W102 CONTROL PANEL PARTS MODEL RCSPBDA RFS12G EV ...

Page 38: ...6 5 2012 2400 2005 2006 2381 W130 2000 2002 W102 CONTROL PANEL PARTS MODEL RCS10PBDA EV ...

Page 39: ...2004 2000 2381 2002 2006 W130 W102 CONTROL PANEL PARTS MODEL RCS10A RCS10MPA 6 6 EV ...

Page 40: ...6 7 2004 2000 2006 2381 W130 W102 CONTROL PANEL PARTS MODEL RCS10SW2A RCS10MPSA RFS10SW2A RFS12MPSA RFS12SW2A EV ...

Page 41: ...6 8 7037 9000 3001 5045 W121 W109 W158 W121 W109 3009 W105 W109 3004 5024 W109 W108 OVEN CAVITY PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

Page 42: ...6 9 4003 4000 4009 W102 W117 4002 4004 4008 4001 LATCH BOARD PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

Page 43: ...08 W101 W108 W105 W101 W101 W101 5202 5041 5103 5059 5067 5201 5010 W101 W108 W109 5104 5009 W104 W101 W109 5001 5051 5000 5203 5302 W109 5008 5019 5018 3381 3028 9000 5061 INTERIOR PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

Page 44: ...6 11 6001 6000 W121 W108 6013 W121 3026 3901 3902 W162 BASE PLATE PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

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