Frigidaire 316495069, FMV152K User Manual

MICROWAVE OVEN TECH SHEET

CAUTION

Disconnect from Electrical Supply Before Servicing Unit

PRECAUTIONS TO BE OBSERVED BEFORE AND

DURING SERVICING TO AVOID PROSSIBLE

EXPOSURE TO EXCESSIVE MICROWAVE ENE RGY

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 as necessary.

1. Interlock operating.

2. Proper door closing.

3. Seal and sealing surfaces ( Arcing, wear and other damage.)

4. Damage to or loosening of hinges

and latch.

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. Waveguide or transmission line. And cavity for proper alignment, integrity and connection.

D. Any detective or mis-adjusted

components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired. replaced. or adjusted by producers.

designed in this manual before the oven Is released to the owner.

E. A microwave leak age check to verify

Compliance with the Federal performance Standard should be performed on each oven prior to release to the owner.

F. Do not attempt to operate the oven if the

door glass is broken.

Parts Layout

MONITOR SWITCH

DOOR SENSING SWITCH

VENT MOTOR

BOTTOM THERMOSTAT

MOTOR CONDENSER

NOISE FILTER

FAN MOTOR

HOOD THERMOSTAT

H.V.CAPACITOR

H.V.TRANSFORMER

COOK TOP LAMPS

Made in china

OVEN THERMOSTAT

T/TABLE MOTOR

PRIMARY SWITCH

OVEN LAMP

H.V.DIODE

MAGNETRON

MAGNETRON THERMOSTATA

Schematic Diagram

Warning : Power must be disconnected before servicing this appliance MODEL NO. :

FMV

OG:ORANGE

YW:YELLOW

RD:RED

BL:BLUE

GN:GREEN

VENT RELAY

LAMP RELAY

(RY3)

CONTROL P.W.B. ASS'Y

SUB

(RELAY 1)

POWER RELAY

(RELAY 2)

1 5 2 K

BR:BROWN

WH:WHITE

BK:BLACK

GY:GREY

PK:PINK

HI (RY5)

LOW

(RY4)

L.V.T

RELAY

31 WH

32 YW

DOOR SENSE SWITCH (BOTTOM)

NOTE: Door is open

26 GY

25 BL

24 BK

23 GN

5 RD

22 BR

18 OG

12 WH

10 BK

MAGNETRON

POWER SUPPLY :

SINGLE PHASE

ONLY

FILTER ASS'Y

FUSE

CAVITY

9 WH

H.V. TRANS

H.V.DIODE

THERMAL CUT-OUT

1 BK

2 BK

(110/0)

T.P.

28 GN

CAPACITOR

MOTOR

29 YW

MGT THERMAL

CUT-OUT

30 WH

)

3 BK

BOTTOM THERMAL

CUT-OUT

19 YW

)

4 BK

6 YW20 BL

15 WH

INTERLOCK ( UPPER)

7 YW

PRIMARY

8 BK

VENT MOTOR

(40/70)

HOOD THERMAL

CUT-OUT

27 OG

21 YW

COOKTOP

LAMP

120V OVEN LAMP

17 BK

120V TURNTABLE MOTOR

16 WH

TTM

FAN MOTOR

MONITOR INTERLOOK SWITCH

11 WH

H.V.

CAPACITOR

Wiring Diagram

Warning : Power must be disconnected before servicing this appliance

MODEL NO. :

POWER RELAY

P C B

NOTE: For servicing replacement use 16GA,105 C thermoplastic covered wire

FMV

1 5 2 K

WH-12 BK-10

YW-32 WH-31

BK-24 BL-25 GY-26 GN-23

OG-18 BR-22

RD-5

BK-4

PRIMARY SWITCH

YW-32 WH-31

BK-17 WH-15 WH-15

YW-7 WH-16

OG-18 BL-20

YW-6 BK-17

WH-16 BL-20 GN-23

WH-30 GN-28 YW-29 OG-27

BL-25

BK-1 BK-2

BK-2 BK-3

BK-3 BK-4

GY-26 BK-24

OG-27

YW-6

YW-7

BK-8

WH-11

MONITOR SWITCH

WH-9

DOOR SENSING SWITCH

T/TABLE MOTOR

FAN MOTOR

OVEN LAMP

VENT MOTOR

CAVITY THERMOSTAT

MGT THERMOSTAT

BOTTOM THERMOSTAT

HOOD THERMOSTATA

GN-28

YW-29

MOTOR CONDENSER

YW-19 YW-21

WH-12

BK-1

OUT IN

except for high voltage leads or as noted on special leads.

NOISE FILTER

POWER CORD

GND

COOKTOP LAMP

H.V.DIODE

OG:ORANGE

YW:YELLOW

RD:RED BK:BLACK

BL:BLUE

GN:GREEN

H.V.TRANS

BR:BROWN

WH:WHITE

GY:GREY PK:PINK

GROUND HARNESS LEADS PARTS LEADS

H.V.CAPACITOR

WH-11

BK-10

MGT TUBE

WH-9

BK-8

Switch Chart

SWITCH

Primary Interlock

Door sensing Interlock

Monitor Interlock

Disconnect the wires at the Primary Interlock Switch. Check from the common terminal to the normally opened terminal.

Disconnect the wi res at the sensing interlock Switch. Check from the common terminal and Normally closed terminal

Disconnect the wi res at the Monitor Switch. Check from the common terminal and Normally closed terminal .

CHECK BY

DOOR OPEN

DOOR CLOSE

Note: These Diagrams are not intended to show a complete circuit, they represent the position of switches

during “DOOR OPEN” and “DOOR CLOSED”. (continuity checks only)

Primary Interlock Switch

Door Sensing Switch

DOOR

( ) CONTINUITY

( ) NO CONTINUITY

Monitor Interlock Switch

OUTPUT POWER OF MAGNETRON

CAUTION MICROWAVE RADIATION

PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OTHER PARTS CONDUCTING MICROWAVE ENERGY.

The output power of the magnetron can be measured by performing a water temperature rise test. Equipment needed: * Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm) * One glass thermometer with mercury column NOTE: Check line voltage under load. Low voltage will lower the magnetron output.

Make all temperature and time tests with accurate equipment.

1. Fill the one liter glass vessel with water.

2. Stir water in glass vessel with thermometer, and record glass vessel’s temperature (“T1”, 10 1 C).

3. After moving the wat er into another glass vessel, place it in the center of the cooking t ray.

Set the oven to high power and operate for 47 seconds exactly. ( 3 seconds included as a holding time of mag netron oscillation)

4. When heating is finished, stir the water again with the thermometer and measure the temperature ( “T2”).

5. Subtract T1 from T2. This will give you the water temperaturerise. ( T )

6. The output power is obtained by the following formula;

Output = 4.187x1000x T+0.55xMcx(T2-T0)

7. Normal temperature rise for this model is 9.9 C to 10.3 C at ‘HIGH’. NOTE 1: Variations or errors in the test procedure will cause a variance in the temperature rise.

Additional power test should be made if temperature rise is marginal.

NOTE 2: Output power in watts is computed by multiplying the temperature rise (step 5) by a factor

of 91 times the of centigrade temperature.

45 : Heating Times (sec)

( 3 seconds included as a holding time of magnetron oscillation.)

4.187 : Coefficient f or water 1000 : Water ( cc )

T : Temperature Rise (T2-T1)

T0 : Room Temperature

Mc : Cylindrical borosilicate glass weight

DOOR CLOSE

Transformer

Secondary

Filament

Terminal

Terminals

Primary Terminal

Magnetron

Cooling Fins

Capacitor

Diode

Some inexpensive Meters may indicate Infinite resistance in both directions

Ventilation Motor

Component tests

WARNING

Disconnect the power supply cord from the outlet befo re removing the

outer cabinet from the unit. Discharge the high voltage capacitor and remove the lead wires from The primary winding of the high voltage transformer before conducting any of the following tests. Conduct all operation tests with 1 liter of water in the oven. Conduct a microwave energy test

1. Remove wire leads. Install the magnetron seal in the

2. Measure resistance .( ohm meter scale: Rx1)

3. Measure resistance .( ohm meter scale: Rx1000)

1. Remove wire leads.

2. Measure resistance .( ohm meter scale: Rx1000)

1. Measure continuity. Forward .( ohm meter scale: Rx1000)

2. Measure continuity. Reverse .( ohm meter scale: Rx1000)

1. Remove wire leads.

2. Measure resistance .( ohm meter scale: Rx1) 2 level: White and Blue wire

Personal injury/Product Hazard

after performing any test or repairs to the microwave.

Check that all wire leads are in the Correct position before operating The microwave oven. Grasp wire connectors when removing the wire leads from microwave parts.

Failure to follow these instructions may result in electrical shock or other Personal injury or in product damage.

High voltage components

1. Remove wire leads.

2. Measure resistance .( ohm meter scale: Rx1) Primary winding Secondary winding Filament winding

3. Measure resistance .( ohm meter scale: Rx1000) Primary winding to ground Filament winding to ground

correct position .Check that the seal is in good condition.

Filament winding

Filament to chassis

Terminal to terminal

Terminal to case

Approx. 0.334+2% ohm. Approx. 118.7+2% ohm. 0 ohm..

Normal: Infinite. Normal: Infinite.

Normal: Less than 1 ohm

Normal: Infinite.

Normal: Momentarily indicates several

ohm, and then gradually returns to infinite.

Normal: Infinite.

Normal: Continuity. Abnormal: Infinite.

Normal: Infinite. Abnormal: Continuity.

Approximately 35.2 ohms

Components

T/Table Motor

Fan Motor

Other component tests

Test

1. Remove wire leads.

2. Measure resistance. ( ohm meter scale: Rx1000)

1. Remove wire leads.

2. Measure resistance. ( ohm meter scale: Rx1)

Results

Normal: Approximately: 3.3k ohms

Normal: Approximately: 97.4 ohms

p/n 316495069