Panasonic NN-SM33HMY Bedienungsanleitung

Microwave Oven

Power Requirement

Power Output

Microwave Frequency

Magnetron

Timer

Outside Dimensions

Cavity Dimensions

Net Weight

Shipping weight

Specifications subject to change without notice.

Watts (5.9 A)

Single phase, 3 wire grounded

2,450 MHz

4 (W) x (H) x 0(D) mm

12.7kg (approx.)

2M219J

Model No.

copying and distribution is a violation of law

NN-SM33HMY

Volts AC 50 Hz

1 kg (approx.)

2 L

315(W) x 227(H) x 349 (D) mm

220

85 287 40

4.7

SINGAPORE

Silvery

0 ~ 35 min.

Watts full microwave power (IEC60705)

1270

800

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.

SAFETY PRECAUTIONS

CAUTION

MICROWAVE RADIATION

DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR

OR OTHER PARTS CONDUCTING MICROWAVE ENERGY.

WARNING 

Thisproductshouldbeservicedonlybytrainedqualifiedpersonnel.

Thisservicemanualcoversproductsforfollowingmarkets.

Whentroubleshootingorreplacingparts,pleaserefertothecountryidentificationsshownbelowforyour

applicableproductspecification.

WTT......For Taiwan

CONTENTS

(Page)

SAFETY PRECAUTIONS

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Inside front cover

SPECIFICATIONS

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1-1

CAUTIONS

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2-1

INSTALLATIONS

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3-1

OPERATING INSTRUCTIONS

------------------------------------------------------------------------------------

4-1

FEATURES

-----------------------------------------------------------------------------------------------------------------------

4-1

CONTROL PANEL

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4-1

OPERATING SEQUENCE

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4-2

SCHEMATIC DIAGRAM

------------------------------------------------------------------------------------------------------

4-3

CIRCUIT DESCRIPTION

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4-4

SERVICE INFORMATION

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5-1

TOOLS AND MEASURING INSTRUMENTS

--------------------------------------------------------------------------

5-1

MICROWAVE LEAKAGE TEST

--------------------------------------------------------------------------------------------

5-1

MEASUREMENT OF MICROWAVE POWER OUTPUT

-----------------------------------------------------------

5-3

DISASSEMBLY AND ADJUSTMENT

------------------------------------------------------------------------------------

5-3

INTERLOCK CONTINUITY TEST

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5-7

COMPONENT TEST PROCEDURE

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5-8

TROUBLE SHOOTING

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5-12

EXPLODED VIEW

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6-1

REPLACEMENT PARTS LIST

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7-1

1-1

POWER LEVEL & ACCESSORIES

This microwave oven is designed for household use only.

It is not recommended for commercial purposes.

DESCRIPTION

Microwave Power for Variable Cooking

Power level

ITEM

Control Complement

Rating Label Location

Accessories

Inside

Glass Tray

Ro Rller ing

Instruction manual

Low

Medium

3 Watts

High 800 Watts

411 Watts

2 2

• 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.

•

Remove your watches whenever working close to or

replacing the Magnetron.

• 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.

• 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.

2-1

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.

THE OVEN IS TO BE SERVICED ONLY

BY PROPERLY QUALIFIED SERVICE

PERSONNEL.

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.

ANTENNA

COOLING FIN

MAGNETRON

CHASSIS GROUND

FILAMENT

TERMINALS

MAGNETRON

GASKET

INSTALLATIONS

3-1

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 on a sturdy and flat

surface at least 10 cm(4 inches) from the wall.

7. Place the microwave oven as far away as possible

from TV, RADIO, COMPUTER, etc., to prevent

interference.

EARTHING INSTRUCTIONS

This microwave oven is designed to be used in a fully

earthed condition.

It is imperative, therefore, to make sure it is properly

earthed before servicing

WARNING-

THIS APPLIANCE

MUST BE EARTHED

IMPORTANT

As the colors of the wires in the mains lead of this

appliance may not correspond with the colored

markings identifying the terminals in your plug,

proceed as follows.

The wire which is colored green

connected to the terminal in the plug which is marked

with the letter Eor by the earth symbol ( ) or

colored green or green-and-yellow.

The wire which is colored

the terminal in the plug which is marked with the letter

Nor colored black.

The wire which is colored

to the terminal in the plug which is marked with the

letter Lor colored red.

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

10cm

The wires in this mains lead are colored in

accordance with the following code:

must be

white must be connected to

black must be connected

Green:

Black:

Earth

White: Neutral

Live

4-1

OPERATING INSTRUCTIONS

FEATURES

CONTROL PANEL

Oven Front Plate

Safety Door Lock System

Control Panel

Roller Ring

Glass Tray

See-Through oven window

Door C

1 Cooking mode select dial

2 Defrost power

3 Microwave power

4 Time/weight select dial

NN-SM33HM/W, NN-SM32HM

Control panel

4-2

OPERATING SEQUENCE

MICROWAVE COOKING

1. Open the oven door, place the food on the turntable in

the oven, and close the oven door.

2. Set the microwave power selector to the desired

power level. There are five power levels from 80W to

these positions.

3. Set the timer to the desired cooking time. The turntable

begins to rotate and cooking starts. At the end of

cooking time you will a single ring sound, and the

lamp is turn off.

NOTE:

• Each number represents minutes. To ensure accurate

timing, it is advisable to turn the timer knob slightly

passed the desired cooking time and then back to the

proposed setting.

• Press the door opener to check the cooking condition

during oven operation. Opening the door during oven

operation automatically turns off the oven and stops the

timer. If cooking is to continue, close the door. Cooking

will be resumed until the full cooking time has elapsed.

POSITIONS

800W. The power selector can be set to any one of

Low

Medium

High 800W

411W

232W

SCHEMATIC DIAGRAM

4-3

4-4

CIRCUIT DESCRIPTION

• As the door is closed, the contact of MONITOR

SWITCH opens. This switch creates the short circuit to

blow fuse during operation under abnormal condition.

(ie, should the contacts of primary and secondary

switch fail to open the circuit)

• The latches are secured by . The oven light

turns on while the oven is in operation.

WHEN MICROWAVE POWER LEVEL

AND COOKING TIME SET

• The contacts of the timer switch changes to ON

position when the timer knob is rotated.

(While power control knob is set at “HIGH”)

• The contacts of primary and secondary switch close the

circuit.

•Turntable rotates.

• The fan motor rotates and cools the magnetron by

blowing the air (coming from the intake holes on the

baseplate)over the magnetron.

• The air is also directed into the oven to exhaust the

vapor in the oven through the upper plate.

• Timer starts rotating.

• 3.2 volts AC is generated from the filament winding of

the high voltage transformer. This 3.2 volts is applied to

the magnetron to heat the magnetron filament through

two noise preventing choke coils.

A high voltage of approximately 2100 volts AC is

generated in the secondary of the high voltage

transformer which is increased by the action of the

diode and charging of the high voltage capacitor. The

negative DC voltage is then applied to the filament of

the magnetron.

WHEN THE DOOR IS OPENED DURING

COOKING

• Both primary switch and secondary switch open to cut

off the primary winding voltage to the high voltage

transformer to stop microwave oscillation.

• Timer, turntable and fan motor stop.

• As the door is opened, if the contact of primary switch

and secondary switch fail to open, the fuse opens due

to the large current surge caused by the monitor switch

activation which in turn stops magnetron, oscillation.

transformer and the microwave oven begin to operate.

Electricty apply to the high voltage

connect the circuit

the low acting relay assy works ands

Input Volts AC.

•

oor hookd

H.V.T

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