Frigidaire MFM-6D Manuale utente

MICROWAVE OVEN

SERVICE MANUAL

DEFROST COOK CLOCK

DEFROST

COOK

123

456

789

STOP/CLEAR

START

Model No.: MFM-6D

MFM-7DTP

PROPER USE AND SERVICE PRECAUTIONS...........................................................................................2

SPECIFICATIONS...........................................................................................................................................3

FEATURES DIAGRAM...................................................................................................................................4

INSTALLATION ...............................................................................................................................................6

OPERATION PROCEDURE...........................................................................................................................7

CONTROLS.....................................................................................................................................................8

INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS..............................................................22

MEASUREMENT OF THE MICROWAVE OUTPUT POWER....................................................................24

MICROWAVE EMISSION TEST ..................................................................................................................24

WIRING DIAGRAM.......................................................................................................................................25

CIRCUIT DESCRIPTION..............................................................................................................................26

SAFETY PRECAUTIONS FOR DISASSEMBLY AND REPAIR .................................................................28

DISASSEMBLY AND ASSEMBLY ...............................................................................................................29

TROUBLE SHOOTING GUIDE....................................................................................................................34

COMPONENT TEST PROCEDURE ...........................................................................................................41

PRINTED CIRCUIT BOARD ........................................................................................................................43

CIRCUIT CHECK PROCEDURE............................................................................................................43

P.C.B. CIRCUIT DIAGRAM......................................................................................................................48

COMPONENT INFORMATION...............................................................................................................50

PRINTED CIRCUIT BOARD....................................................................................................................51

P.C.B. LOCATION NO..............................................................................................................................52

EXPLODED AND PARTS LIST....................................................................................................................53

PRECAUTIONS TO BE OBSERVED BEFORE AND

DURING SERVICING TO AVOID POSSIBLE

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 as 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.

generating compartments, check the magnetron, wave guide or transmission line, and cavity

for proper alignment, integrity, and connection.

(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) A microwave leakage check to verify compliance with the Federal Performance Standard

should be performed on each oven prior to release to the owner.

TABLE OF CONTENTS

1. For Safe Operation

Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor

cooking and may cause serious bodily injury to the operator.

IF ANY OF THE FOLLOWING CONDITIONS EXIST. OPERATOR MUST NOT USE THE APPLIANCE.

(Only a trained service personnel should make repairs.)

1) A broken door hinge.

2) A broken door viewing screen.

3) A broken front panel, oven cavity.

4) A loosened door lock.

5) A broken door lock.

The door gasket plate and oven cavity surface should be kept clean.

No grease, soil or spatter should be allowed to build up on these surfaces or inside the oven.

DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN. The microwave oven

has concealed switches to make sure the power is turned off when the door is opened. Do not attempt to

defeat them.

DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE

MANUAL.

2. For Safety Service Procedures.

1) If the oven is operative prior to servicing, a microwave emission check should be performed prior to

servicing the oven.

2) If any certified oven unit is found to have excessive emission level 5mW/cm2, the service person

should:

(a) inform the manufacturer, importer or assembler,

(b) repair the unit at no cost to the owner,

(d) tell the owner of the unit not to use the unit until the oven has been brought into compliance.

3) If the oven operates with the door open, the service person should tell the user not to operate the oven

and contact the manufacturer and CDRH immediately.

PROPER USE AND SERVICE PRECAUTIONS

CAUTION: This Device is to be Serviced Only by Properly Qualified Service Personnel. Consult the

Service Manual for Proper Service Procedures to Assure Continued Compliance with

the Federal Performance Standard for Microwave Ovens and for Precautions to be

Taken to Avoid Possible Exposure to Excessive Microwave Energy.

* Specifications subject to change without notice.

SPECIFICATIONS

289

(11.4 in)

495

(19.5 in) 382

(15.0 in)

MFM-6D MFM-7DTP

POWER SUPPLY 120V AC 60Hz SINGLE PHASE WITH GROUNDING

POWER CONSUMPTION

920W

MICROWAVE OUTPUT POWER 600W (IEC 705)

FREQUENCY 2450 MHz

OUTSIDE DIMENSIONS (WxHxD) 495x 289 x 382mm (19.5 x 11.4 x 15.0 in.)

CAVITY DIMENSIONS (WxHxD) 320x 225 x 330mm (12.6 x 8.9 x 13.0 in.)

NET WEIGHT APPROX. 14Kg (30.9 lbs.)

TIMER 59 min. 99 sec. 59 min. 99 sec.

POWER SELECTIONS 2 LEVELS 2 LEVELS

FEATURES DIAGRAM (MFM-6D)

!@ # $ %

(

DEFROST COOK CLOCK

DEFROST COOK

123

456

789

STOP/CLEAR START

)

1. Door latch–When the door is closed it will

automatically lock shut. If the door is opened

while the oven is operating, the magnetron will

automatically shut off.

2.Door seal-The door seal maintains the

microwave within the oven cavity and prevents

microwave leakage.

3. Oven Cavity

4. Spatter shield-Protects the microwave outlet

from splashes of cooking foods.

5. Safety interlock system-Prevents the oven

from operating while the door is opened.

6. Door release button-Pushing this button

stops oven operation and opens the door.

7. Glass cooking tray-Made of special heat

resistant glass. The tray must always be in

proper position before operating.

Do not cook food directly on the tray.

8. Roller guide-Supports the glass cooking tray.

9. Door screen-Allows viewing of food.

The screen is designed so that light can pass

through, but not the microwaves.

10. Display-Cooking time & present time are

displayed.

11. Defrost-Used to defrost foods.

12. Clock-Used to set clock.

13. Cook-Used to cook.

14. Time set pad-Used to set the cooking time

and the present time.

15. Stop/Clear-Used to stop the oven operation

or to delete the cooking data.

16. Start-Used to start a selected operation.

FEATURES DIAGRAM (MFM-7DTP)

Defrost

(Low)

PM No Or Alam On

Defront

(Low) Cook

(Med) Cook

(High) Lock Time

Cook

(Med) Cook

(High)

Porozen

Reg Lag Beremeo

Soup Quick On

30 Seca

Frozem

Pizea

Time 1 2 3

Alarm

Am/Pm

Start

Stop

Clear

Alarm

Stop

Baked

Potato Dinner

Plate

To Cook:

1. Selet Power Level

or Preset from above

2. Enter cooking Time

(excopt for pecects)

3. Press Stait

To Set Time/Alam:

1. Press Time or Alarm

2. Enter desirad time

3. Select AM or PM

4. Prem Time or Alam

5. To shut off alam

Press Alarm Stop

45 6

78 9

Defrost

(Low)

PM No Or Alam On

Defront

(Low) Cook

(Med) Cook

(High) Lock Time

Cook

(Med) Cook

(High)

Porozen

Reg Lag Beremeo

Soup Quick On

30 Seca

Frozem

Pizea

Time 1 2 3

Alarm

Am/Pm

Start

Stop

Clear

Alarm

Stop

Baked

Potato Dinner

Plate

To Cook:

1. Selet Power Level

or Preset from above

2. Enter cooking Time

(excopt for pecects)

3. Press Stait

To Set Time/Alam:

1. Press Time or Alarm

2. Enter desirad time

3. Select AM or PM

4. Prem Time or Alam

5. To shut off alam

Press Alarm Stop

45 6

78 9

!@ # $ %

(

‘

)

“

1. Door latch–When the door is closed it will

automatically lock shut. If the door is opened

while the oven is operating the magnetron

will automatically shut off.

2. Door seal-The door seal within the oven

cavity. Prevents microwave leakage.

3. Oven Cavity

4. Spatter shield-Protects the microwave outlet

from splashes of cooking foods.

5. Safety interlock system-Prevents the oven

from operating while the door is opened.

6. Door release button-Pushing this button

stops oven operation and opens the door.

7. Glass cooking tray-Made of special heat

resistant glass. The tray must always be in

proper position before operating.

Do not cook food directly on the tray.

8. Roller guide-Supports the glass cooking

tray.

9. Door screen-Allows viewing of food.

The screen is designed so that light can pass

through, but not the microwave energy.

10. Display-Cooking time & present time are

displayed.

11. Defrost(Low)-Used to defrost foods.

12. Clock(Med)-Used to cook at medium.

13. Cook(High)-Used to cook at high.

14. Popcorn-Used to Cook Popcorn.

15. Beverage/Soup-Used to heat/re-heat

beverage/soup.

16. Quick On-Touch to set re-heat setting in 30

second increments..

17. Frozen pizza-Used to cook frozen pizza.

18. Baked Potato-Used to cook baked potato.

19. Dinner plate-Used to reheat dinner plate.

20. Time-Used to set clock.

21. Time set pad-Used to set the cooking time

and the present time.

22. Alarm-Used to set alarm.

23. Am/Pm-Used to set clock & Used to set

alarm.

24. Alarm Stop-Used to clear the alarm data.

25. Stop/Clear-Used to stop the oven operation

or to delete the cooking data.

26. Start-Used to start a selected operation.

1. Steady, flat location

This microwave oven should be set on a stady, flat surface.

2. Leave space behind and side

All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat

and, eventually, cause oven failure.

3. KEEP away from Radio and TV sets

Poor television reception and radio interference may result if the oven is located close to a TV, Radio, or

antenna, feeder and so on.

4. KEEP away from heating appliances and water taps

Keep the oven away from hot air, steam or splash when choosing a place to position, it, or the insulation

might be adversely affected and breakdowns occur.

5. Power supply

• Check your local power source. This microwave oven requires a current of approximately 15 amperes,

120 Volts, 60Hz grounded outlet.

• Power supply cord is about 6ft long.

1. Longer cord sets or extension cord are available and may be used if care is exercised in their use.

2. If a long cord sets or extension cords is used, (1) the marked electrical rating of the cord set or

extension cord should be at least as great as the electrical rating of the appliance, (2) the extension

cord must be a grounding-type 3-wire cord, and (3) the longer cord should be arranged so that it will

not drape over the countertop or tabletop where it can be pulled on by children or tripped over

accidentally.

6. Examine the oven when unpacking for any damage such as:

A misaligned door, Broken door, or dent in cavity.

If any of the above are visible. DO NOT INSTALL, and notify intirion corp immediately.

INSTALLATION

3-prong plug

3-prong Receptacle

Receptacle

Box cover

Grounding Lead Receptacle Box cover

Grounding Adaptor

Receptacle

When use a grounding adaptor, make

sure the receptacle box is fully grounded

When use 3-pronged plug

This section includes useful information about oven operation.

OPERATION PROCEDURE

Plug power supply cord into a standard 3-

pronged 15 Amp, 120V AC 60Hz power outlet

socket.

After placing the food in a suitable container,

open the oven door and put it on the glass tray.

The glass tray must always be in place during

cooking.

Shut the door. Make sure that it is firmly

closed.

When the oven door is opened, the light turn

off.

The oven door can be opened at any time

during operation by touching the door release

button on the control panel. The oven will

automatically shut off. To restart the oven,

close the door and then touch START.

Each time a pad is touched, a BEEP will

sound to acknowledge the touch.

The display will show “: 0” when the oven is

plugged in.

Time clock returns to the present time when

the cooking time ends.

When the STOP/CLEAR pad is touched

during the oven operation, the oven stops

cooking and all information retained.

To erase all information (except the present

time), touch the STOP/CLEAR pad once

more. If the oven door is opened during the

oven operation, all information is retained.

If the START pad is touched and the oven

does not operate, check the area between the

door and door seal for obstructions and make

sure the door is closed securely.

The oven will not start cooking until the door is

completely closed or the program has been

reset.

NOTE:

When the cooking time is up the time

pointer reads “0”, you can hear the beep

and the heating stops. PLEASE NOTE

THAT THE TIMER CONTINUES FOR

THREE (3) MINUTES AFTER THE

COOKING STOPS. This delays

reactivation of the refrigerator and

lengthens its useful life. Open the door

and take out the food (you need not wait

for the timer to stop to remove food). If

you wish to check the food before the end

of set time, simply open the door and the

oven will stop cooking. PLEASE NOTE

THAT THE TIMER DOES NOT STOP

when the door is open, but the oven does

stop cooking. When the door is closed,

the oven will resume cooking

automatically. Cooking time can be reset

at any time during the cooking operation

by turning the timer knob. PLEASE NOTE

THAT THE REFRIGERATOR IS OFF

DURING THE MICROWAVE OVEN USE.

NOTE: Make sure the oven is properly installed and plugged into the electrical outlet.

When the oven is first plugged in, the display will flash ":0" and a tone will sound. If the AC power ever goes

off, the display shows ":0" when the power comes back on.

DO THIS...

1. Touch CLOCK pad.

THIS HAPPENS...

This is a 12 hour clock system.

CONTROLS (MFM-6D)

SETTING THE CLOCK

NOTE: If you attempt to enter an incorrect time, the time will not be set and a error signal tone will

sound. Touch the CLOCK pad and re-enter the time.

CLOCK

2. Touch CLOCK pad once

more.

This is a 24 hour clock system.

CLOCK

4. Touch CLOCK pad.

The display will stop blinking, and the colon starts blinking.

If you selected 12 hour clock system, this digital clock allows you to set from 1:00

to 12:59.

If you selected 24 hour clock system, this digital clock allows you to set from 0:00

to 23:59.

CLOCK

DEFROST COOK

3. Enter the correct time of day

by touching the numbers in

sequence.

The display will then begin

blinking.

1 2 3 0

DEFROST COOK

NOTE:

This oven has multiple

clock systems. If you want

12 hour clock system, omit

this step.

When DEFROST is selected, the automatic cycle divides the defrosting time into periods of alternating

defrost and stand times by cycling on and off.

DEFROSTING

DO THIS...

1. Touch DEFROST pad.

THIS HAPPENS...

The DEFROST indicator lights

and “ :0” is displayed.

DEFROST

DEFROST COOK

3. Touch START pad.

When you touch START pad, the DEFROST indicator starts blinking to show the

oven is in the DEFROST mode. The display counts down the time to show you

how much defrosting time is left in the DEFROST mode. The oven beeps during

the defrosting cycle to signal that the food needs to be turned or rearranged.

When the defrosting time ends, you will hear 3 beeps.

START

2. Touch number pads for the

defrosting time you want.

The display will show the

numbers you pressed in the

order you touched.

2 7 1 0

DEFROST COOK

NOTE: Your oven can be

programmed for 59

minutes 99

seconds. (59:99)

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