Amana Rfs12sw2c Owner's Manual

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Microwave Oven Service Manual

RFS12SW2C

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

SAFETY PRECAUTIONS

This device is to be serviced only by properly qualified service personnel. Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be taken to avoid possible exposure to excessive microwave energy.

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.

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 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.

Only for training and service purposes

CONTENTS

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SAFETY PRECAUTIONS

SPECIFICATIONS

CAUTIONS

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INSTALLATIONS

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OPERATING INSTRUCTIONS

FEATURES

CONTROL PANEL

COOKING DISPLAYS

OPERATION

PROGRAMMING

SCHEMATIC DIAGRAM

CIRCUIT DESCRIPTION

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SERVICE INFORMATION

TOOLS AND MEASURING INSTRUMENTS

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Inside front cover

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2-1

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4-2

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4-6

4-7

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5-1

MICROWAVE LEAKAGE TEST

MEASUREMENT OF MICROWAVE POWER OUTPUT

DISASSEMBLY AND ADJUSTMENT

INTERLOCK CONTINUITY TEST

COMPONENT TEST PROCEDURE

TROUBLE SHOOTING

EXPLODED VIEW

Replacement Parts list

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5-3

5-7

5-8

5-11

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Only for training and service purposes

SPECIFICATIONS

ITEM

MODEL

Power Requiremen

Power Output

Microwave Frequency

Magnetron

Timer

Outside Dimensions

Cavity Dimensions

Net Weight

Shipping weight

Control Complement

DESCRIPTION

RFS12SW2C

120 V~ 60 Hz 2000 watt (18 A) Single phase, 3 wire grounded

1200 watt full microwave power (IEC60705)

2450 MHz

2M246

0 ~ 60 min.

213/4” (W) x 141/4” (H) x 177/8” (D)

141/4” (W) x 87/8” (H) x 163/8” (D)

64 lbs (approx.)

71 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) 50% (Med.-Low) 20% (Low)

.............

..............

.......................

approx. 70% of Full power approx. 50% of Full power approx. 20% of Full power

Rating Label

Accessories

This microwave oven is designed for commercial use only.

It is not recommended for buelt-in Installation.

Only for training and service purposes

Location

Time chart

1-1

CAUTIONS

Unlike other appliances, the microwave oven is high-voltage and high-current equipment. Though it is free from danger in ordinary use, extreme care should be taken during repair.

• DO NOT operate on a 2-wire extension cord during repair and use.

• NEVER TOUCH any oven components or wiring during operation.

• BEFORE TOUCHING any parts of the oven, always remove the power plug from the outlet.

• For about 30 seconds after the oven stops, an electric charge remains in the high voltage capacitor. When replacing or checking, you must discharge the high voltage capacitor by shorting across the two terminals with an insulated screwdriver.

MICROWAVE RADIATION

Personnel should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating device if it is improperly used or connection. All input and output microwave connections, waveguide, flange, and gasket must be secure never operate the device without a microwave energy absorbing load attached. Never look into an open waveguide or antenna while the device is energized.

• Proper 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.

ANTENNA

Gasket

• Remove your watches whenever working close to or replacing the Magnetron.

• DO NOT touch any parts of the control panel circuit. A resulting static electric discharge may damage this P.C.B.

• NEVER operate the oven with no load.

• NEVER injure the door seal and front plate of the oven cavity.

• NEVER put iron tools on the magnetron.

• NEVER put anything into the latch hole and the interlock switches area.

COOLING FIN

FILAMENT

MAGNETRON

CHASSIS GROUND

TERMINALS

MAGNETRON

THE OVEN IS TO BE SERVICED ONLY BY PROPERLY QUALIFIED SERVICE PERSONNEL.

2-1

Only for training and service purposes

INSTALLATION

BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.

INSTALLING

1. Empty the microwave oven and clean inside it with a soft, damp cloth. Check for damage such as misaligned door, damage around the door or dents inside the cavity or on the exterior.

2. Put the oven on a counter, table, or shelf that is strong

enough to hold the oven and the food and utensils you put in it. (The control panel side of the oven is the heavy side. Use care when handling.)

3. Do not block the vent and the air intake openings.

Blocking vent or air intake openings can cause damage to the oven and poor cooking results. Make sure the microwave oven legs are in place to ensure proper air flow.

4. The oven should not be installed in any area where

heat and steam are generated, because they may damage the electronic or mechanical parts of the unit. Do not install the oven next to a conventional surface unit or above a conventional wall oven.

5. Use microwave oven in an ambient temperature less

than 104˚F(40˚C).

6. Place the microwave 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 grounded.

WARNING

Improper use of the grounding plug can result in a risk of electric shock. Do not, under any circumstances, cut or remove the third ground prong from the power cord plug.

PREFERRED METHOD

A - Allow at least 11/2 inches (3.81 centimeters) of

clearance around top and sides of equipment. Proper air flow around equipment cools electrical components. With restricted air flow, oven may not operate properly and life of electrical parts is reduced.

B - Allow at least 3 inches from door front to edge of

countertop to avoid accidental tipping of oven.

ENSURE PROPER GROUND

EXISTS BEFORE USE

3-1

FEATURES

Window Door Screen

Electronic Control

Safety Door Lock System

OPERATING INSTRUCTIONS

CONTROL PANEL

Display

Some items in display can be seen but will not glow.

Pads

TIME ENTRY

Pads 1-0

HOLD 0%, DEFROST 20% MEDUIM 50%, MED-HI 70%

STOP/RESET

START

Use to enter heating time without changing preprogrammed number pads.

Use to begin heating with preprogrammed times and power levels or to enter times for “Manual Time Entry” cooking.

Use to select power level. Oven can heat at 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.

4-1

Cooking 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 level used. If power level

does not show, oven is heating at 100% power.

Programming Displays

Indicates programming mode. See “Programming” section of manual for programming procedure.

Indicates programming user options mode. See “User Options” section of manual for programming procedure.

4-2

Operation

CAUTION

Preprogrammed Times and Cook Level

All preprogrammed pads arrive set at full power.

To avoid fire, do not dry newspapers or clothes in microwave oven.

Interrupting Operation

• Open oven door to interrupt operation. Oven fan continues to operate. Close door and press START

pad to resume oven operation.

• Press STOP/RESET pad to interrupt operation. Display continues to show countdown time. Press START pad to resume oven operation and countdown timing.

Canceling Mistakes

• If oven is operating,press STOP/RESET pad once to stop oven, then again to clear display.

• If oven door is open and time shows in display, close oven door and press STOP/RESET pad to clear display.

Operating Preprogrammed Pads

Oven has 10 ~20 preprogrammed number pads. Instructions are written for factory programmed ovens. Ovens that are reprogrammed can respond differently than described below.

1. Open oven door , place food in oven, and close

oven door

• If pad is not pressed in 30 seconds, open and close oven door again.

2. Press desired number pad.

• Oven operates and time counts down.

3. Oven stops heating and oven signal sounds when heating timing elapses.

Operating QTY 2X Pads

1. Press Pad.

2. Press desired number pad

• Example : press + = 18 sec.

Option: Single Digit Option: Double Digit

Pads

Heating Times

1 10 sec.

2 20 sec.

3 30 sec.

4 45 sec.

5 1 min.

6 1:30 min.

7 2 min.

8 3 min.

9 4 min.

0 5 min.

Pads

Heating Times

1 10 sec. 11 20 sec.

2 20 sec. 12 40 sec.

3 30 sec. 13 1 min.

4 45 sec. 14 1:30 min.

5 1 min. 15 2 min.

6 1:30 min. 16 3 min.

7 2 min. 17 4 min.

8 3 min. 18 6 min.

9 4 min. 19 8 min.

10 5 min. 20 10 min.

Pads Heating

Times

Manual Time Entry

Manual Time Entry feature allows the operator to enter time and power levels, and heat without changing the preprogrammed pads.

1. Open oven door, place food in oven, and close door.

• Display shows "READY".

• If pad is not pressed in 30 seconds, open and close oven door again.

2. Press TIME ENTRY pad.

• Display shows "00:00".

3. Press number pads to nter desired cooking time.

• For example, to heat for 2 minutes 30 seconds, press 2, 3, and 0 pads.

Press desired power level pad to change power level.

• If a power level pad is not pressed, oven defaults to 100% power.

• For xample, pressing MEDIUM 50% pad sets oven to 50% power.

• Display shows current power level if other than 100 percent power.

5. Press START pad.

• Oven operates and time counts down.

6. Oven stops heating and oven signal sounds when heating timing elapses.

4-3

PROGRAMMING

Preprogrammed Number Pads

Oven has 10 preprogrammed number pads. Follow instructions below to program heating times and power levels for customized cooking.

1. Open oven door.

• If door is closed or STOP/RESET pad is pressed before finishing programming sequence, oven exits programming mode.

2. Press and hold pad 1 for approximately 5 seconds.

• After 5 seconds, signal sounds. Display shows “PROGRAM” indicating program mode.

3. Press desired number pad.

• Display shows heating time, “COOK LEVEL” and power level if other than 100 percent power.

4. Press number pads to enter desired cooking time.

• For example, to heat for 2 minutes 30 seconds, press 2, 3, and 0 pads.

Press desired power level pad to change power level.

• If a power level pad is not pressed, oven defaults to 100% power.

• For example, pressing MEDIUM 50% pad sets oven to 50% power.

• Display shows current power level if other than 100% power.

6. Press START pad to save new heating time and power level in oven 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 approximately 5 seconds.

• After 5 seconds, signal sounds.

3. Press desired number pad.

• Display shows heating time and preprogrammed number.

4. Press number pads to enter desired cooking time.

• For example, to heat for 2 minutes 30 seconds,

5. Press desired power level pad to change power level.

• If a power level pad is not pressed, oven defaults to 100% power.

• For example, pressing MEDIUM 50% pad sets oven to 50% power.

• Display shows current power level if other than 100 percent power.

6. Press TIME ENTRY pad

• Display briefly shows “STAGE 2”. Then cook time and power level for stage show in display.

• Repeat steps 5-6 to create additional stages.

7. Press START pad to save new heating time and power level in oven memory.

8. Press STOP/RESET pad or close oven door to exit programming mode.

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User Options

Follow the instructions below to customized the microwave oven’s operation. End-of-cycle signal, maximum heating time and other options can be changed to meeting your cooking needs.

1. Open oven door.

• If door is closed or STOP/RESET pad is pressed before finishing programming sequence, oven exits programming mode.

2. Press and hold pad 2 for approximately 5 seconds.

• After 5 seconds, signal sounds. Display shows “OPTION”.

3. Press number pad that matches desired option.

• “OP” represents optional program mode, first number represents option number and second number represents functions currently selected for option.

4. Press START pad to advance to next option. See table for options.

5. Press number pad (0,1-3) to change option.

6. Press START pad to save changes.

• Repeat steps 4-6 to change additional options.

7. Press STOP/RESET pad or close oven door to exit programming mode.

Optional Program Indicator

Number

Pad

Option Selected

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