Sanyo EM-V3410WW, EM-V3410WS Service Manual

File No :

SERVICE MANUAL Microwave Oven EM-V3410WW (AUSTRALIA)

EM-V3410WS

Model No : - Product Code No : -

EM-V3410WW 437 520 15

EM-V3410WS 437 520 16

Foreword
Read this manual carefully, especially precaution on microwave energy, and follow the procedure strictly.
Careless servicing and testing may expose yourself to the microwave energy leakage.

PRECAUTIONS

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.

REFERENCE NO. SM-860326

- TABLE OF CONTENTS -

Adjustment Procedures .......................................... 1

Specifications ....................................................... 2

Power Output Measurement ................................... 2

Precautions and Repair Service Tips ......................... 2

Circuit Diagram .................................................... 3

CAUTION

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 CONNECTED. ALL INPUT AND OUTPUT
MICROWAVE CONNECTIONS, WAVEGUIDES,
FLANGES, AND GASKETS 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.

1. ADJUSTMENT PROCEDURES

TO AVOID POSSIBLE EXPOSURE TO MICROWAVE
ENERGY LEAKAGE, THE FOLLOWING
ADJUSTMENT OF THE INTERLOCK SWITCHES
SHOULD BE MADE ONLY BY AUTHORIZED
SERVICE PERSONNEL.

Test Procedures and Troubleshooting ................ 4 ~ 10

Disassembly Instructions ................................ 11 ~ 14

Exploded View and Parts List .......................... 15 ~ 20

Overall Circuit Diagram .................................. 21

NOTE : If the interlock monitor circuit operates and at the same

time the Fuse blows with the door opened, be sure to
replace the Control Circuit Board because Relay 2 on the
Control Circuit Board, the Door Sensing Switch and the
electric circuit related on the Door Sensing Switch, which
act as Secondary Interlock Switch.

Door
Latch

Lever Stopper

Door
Sensing
Switch

PRIMARY INTERLOCK SWITCH, INTERLOCK
MONITOR SWITCH AND DOOR SENSING SWITCH

ADJUSTMENT
(Figure 1)

(1) Loosen 2 screws securing the Lever Stopper.

(2) Adjust the Lever Stopper position so that it is pushed forward

and pull backward until there is about zero gap between the
Latch Lever and switch body on the Primary Interlock Switch
and at the same time there is about zero gap between the Door
Latch and the switch body on the Door Sensing Switch when the
Door Latch is securely locked.

(3) Tighten the Lever Stopper screws securely.

(4) Make sure the Interlock Monitor Switch closes after the Primary

Interlock Switch opens when the door is opened very slowly,
according to “ CHECKOUT PROCEDURE FOR SWITCHES ”
on page 6.

(5) Make sure the Interlock Monitor Switch opens before the

Primary Interlock Switch closes when the door is closed very
slowly, according to “ CHECKOUT PROCEDURE FOR SWITCHES ”
on page 6.

(6) Make sure the microwave energy leakage is below the limit of

the regulation ( 5mW/cm2 ) when measured with a detector.

(All service adjustments must be made for
minimum microwave energy leakage readings.)

Screws

Figure 1

Latch
Lever

Interlock
Monitor
Switch

Primary
Interlock
Switch

- 1 -

2. SPECIFICATIONS

Rated Power Consumption .. 1500W.

Microwave Output ............. 1000W.

Frequency ........................ 2,450MHz±50MHz.

Power Supply ................... 230 ~ 240V, 50Hz.

Rated Current ................... 6.6 Amp.

Safety Devices .................. Temp. Fuse, open at

167°C for Cavity.
Thermal Protector, open at
122°C for Magnetron.
Fuse (Cartridge Type 8A)
Primary Interlock Switch,
Door Sensing Switch and
Relay 2.
Interlock Monitor Switch.

Timer .............................. Electronic Digital, up to

99 min. 99 sec.

Overall Dimensions ............. 525(W) x 430(D) x 289(H)mm.

Oven Cavity Size ............... 351(W) x 389(D) x 208(H)mm.

Turn Table Diameter ........... 275mm.

Effective Capacity of

Oven Cavity ..................... 28 litres.

Net Weight ....................... Approx. 17Kg.

3. POWER OUTPUT MEASUREMENT

NOTE

The Power Output specification 1000W on this model is
measured with IEC measurement. The Power Output is
measured with two (2) litres water is equivalent to 1000W
in measurement with IEC, when measured with the following
Power Output.

(1) Fill two beakers (glass or plastic) with each one litre of

tap water (about 20°C) and measure the water temperature.
(Use a thermometer with a 1/10 degree gauge).

(2) Place the beakers side by side in the centre of the Glass Tray.

(3) Close the door, set the “TIME” for two minutes. (“2 00” in

the display window). Touch the “START” key and heat the
water exactly for two minutes.

(4) Take the beakers out, immediately stir the water and

measure the water temperature respectively.

(5) Calculate the temperature rise of water in each beaker.

Then calculate the average value of two temperature rises.
Output Power can be calculated by the equation :

Power Output (W) = 70 x ∆t
Where ∆t is an average temperature rise in degrees

Centigrade.

(6) Power Output shall be in the following range :

Average Temperature Rise Power Output
Minimum 11.1°C 777W
Maximum 13.8°C 966W

(7) Power Output is affected by the line voltage under load.

For correct Power Output measurement, the line voltage
under load must be 240±2 Volts.

4. PRECAUTIONS AND REPAIR SERVICE TIPS

PRELIMINARY
A. SINCE NEARLY 4,000 VOLTS EXISTS IN SOME CIR-

CUITS OF THIS MICROWAVE OVEN, REPAIRS SHOULD
BE CARRIED OUT WITH GREAT CARE.

B. TO AVOID POSSIBLE EXPOSURE TO MICROWAVE

ENERGY LEAKAGE, THE FOLLOWING PRECAUTIONS
MUST BE TAKEN BEFORE SERVICING.

(1) Before the power is applied :

(a) Open and close door several times to make sure the

Primary Interlock Switch, the Interlock Monitor Switch
and the Door Sensing Switch operate properly.
(Listen for the clicking sound from the switches).
Make sure the Interlock Monitor Switch closes after
the Primary Interlock Switch is opens when the door
is opened. (See pages 1 and 6).

(b) Make sure the perforated screen and the Choke Die-

lectric of the door are correctly mounted.

(2) After the power is applied :

(a) Open and close the door to see if the interlock mech-

anism operates properly.

(b) Check microwave energy leakage with a leakage

detector and confirm the energy leakage is below
5mW/cm

(3) Do not operate the unit until it is completely repaired,

if any of the following conditions exists :

(a) Door does not close firmly against the cavity front.
(b) The Hinge is broken.
(c) The Choke Dielectric or the Door Seal is damaged.
(d) The Door is bent or warped, or there is any other

visible damage to the Oven that may cause microwave
energy leakage.

NOTE : Always keep the seal clean.

(e) Make sure that there are no defective parts in the

interlock mechanism.

(f) Make sure there are no defective parts in the

microwave generating and transmission assembly.
(especially waveguide).

(4) The following items should be checked after the unit

is repaired :

(a) The Interlock Monitor Switch is connected correctly

and firmly.

(b) The magnetron gasket on the Magnetron is properly

positioned.

(c) Waveguide and Oven Cavity are intact (no leakage of

microwave energy).

(d) The door can be properly closed and the safety

switches work properly.

(e) The oven must be stopped when the door is opened

or the time is up.

The oven must not be operated with any of the above
components removed or bypassed.

2

.

- 2 -

5. CIRCUIT DIAGRAM

Figure 2

DNOCTINOI

KCOLRETNIYRADNOCES

YRAMIRP

EDAMHCTIWS

•

NEPOROOD

ESOLCROOD

•••

KCOLRETNI

HCTIWS

MOCMOCMOCMOC

ONCNONON

•

- 3 -

KCOLRETNI

ROTINOM

HCTIWS

ROOD

GNISNES

HCTIWS

2YALER

6. TEST PROCEDURES AND TROUBLESHOOTING
CAUTION

- DISCONNECT THE POWER SUPPLY CORD FROM
THE WALL OUTLET WHENEVER REMOVING THE

CABINET FROM THE UNIT. PROCEED WITH THE
TESTS ONLY AFTER DISCHARGING THE HIGH
VOLTAGE CAPACITOR AND REMOVING THE LEAD
WIRES FROM THE PRIMARY WINDING OF THE
HIGH VOLTAGE TRANSFORMER. (SEE FIGURE 3)

A. TEST PROCEDURES

COMPONENT CHECKOUT PROCEDURE RESULT

1) Check for resistance : Across the filament Normal reading :
terminals of the Magnetron with an Less than 1 Ohm.
Ohm-Meter on R x 1 scale.

Ohm-Meter

Secondary

Windings

Filament Windings

Primary

Windings

Figure 3

MAGNETRON

HIGH-VOLTAGE
TRANSFORMER

Figure 4

2) Check for resistance : Between each filament Normal reading :
terminal of the Magnetron and the chassis Infinite Ohms.
ground with an Ohm-Meter on highest scale.

Ohm-Meter

Figure 5

1) Measure the resistance : Normal readings :
With an Ohm-Meter on R x 1 scale.
a. Primary winding : Approximately 1.53 Ohms.
b. Filament winding : Less than 1 Ohm.
c. Secondary winding : Approximately 97.2 Ohms.

2) Measure the resistance : Normal readings :
With an Ohm-Meter on highest scale.
a. Primary winding to ground. Infinite Ohms.
b Filament winding to ground. Infinite Ohms.

Ohm-Meter

Note : Remove varnish of

measured point.

Figure 6

- 4 -

COMPONENT CHECKOUT PROCEDURE RESULT

HIGH-VOLTAGE
CAPACITOR
including
BLEEDER
RESISTOR

HIGH-VOLTAGE
DIODE

Measure the resistance : Across two terminals Normal reading :
with an Ohm-Meter on highest scale. Momentarily indicates several ohms,

and gradually returns to 10 Meg-Ohms.

Abnormal reading :

Ohm-Meter

Indicates continuity or 10 Meg-Ohms
from the beginning.

Figure 7

Measure the resistance : Across two terminals Normal reading :
with an Ohm-Meter on R x 10,000 scale. Indicates about the middle position in

one direction (forward direction) and
infinite ohms in the reverse direction,
using meter which is provided with a
9 volt battery.

Ohm-Meter

- Some digital meter may show over
even in a forward direction because
low measuring voltage of meter does
not allow the meter current to pass
through the High Voltage Diode.

NOTE

FUSE DIODE

CONTROL
CIRCUIT
BOARD

Abnormal reading :

Figure 8

Measure the resistance : Across two terminals Normal reading :
with an Ohm-Meter on highest scale. Indicates infinite Ohms in both directions.

Ohm-Meter

Indicates continuity or infinite Ohms
in both directions.

Abnormal reading :

Indicates continuity in both directions
or continuity in one direction and
infinite Ohms in reversed direction.

Figure 9

Measure the voltage : Between test point TP-1,
TP-2, TP-3 or TP-4 and Ground (See Control
Circuit Board on page 19).

- Proceed with the check of the Step-Down
Transformer, to see if any one of the measured
values is different from the specified values.

NOTE

Test

Point

Voltage

TP-1 TP-2 TP-3 TP-4

-5V -15V -27V -31V
DC DC DC DC

- 5 -

COMPONENT CHECKOUT PROCEDURE RESULT

TOUCH KEY
BOARD

Measure the resistance between terminals of
FPC connector after removing it from S101.
(Figure 10).

NOTE

- When reconnecting the FPC connector, make When checking “START” key, connect
sure the holes on the connector are properly Ohm-Meter as illustration below.
inserted in hooks of the plastic fastener in S101.

MATRIX CIRCUIT FOR
TOUCH KEY BOARD
FPC CONNECTOR

Resistance
value

Ohm-Meter

When When not
touched touched

Less than More than
1K Ohms 1 MEG Ohms

TERMINALS OF FPC CONNECTOR

Figure 10

CHECKOUT PROCEDURE FOR SWITCHES

Disconnect the lead wires from the switches and check for the continuity of the switches, by connecting an
Ohm-Meter to its terminals.

SWITCHES CHECKOUT PROCEDURE DOOR OPEN DOOR CLOSED
(See Figure 1 on page 1)

Primary Interlock

Terminals “COM” and “NO”

Door Sensing

Interlock Monitor Terminals “COM” and “NC”

CAUTION : After checking the switches, make sure that the interlock monitor switch is properly connected according

to the CIRCUIT DIAGRAM on page 3.

- 6 -

RESULT

Runs

PROBLEM

1-b

Runs

Circuit Board.

Normal Control

Runs

Key Board.

Normal Touch

Runs

Circuit Board.

Normal Control

SEQUENCE

Replace it

if necessary.

on page 13.

Thermal Protector for

Check continuity of Fuse,

If the Fuse is blown, see “E,

Magnetron, Thermal Protector

for Cavity and AC Power Cord.

Circuit Board.

replace Control

Correct seating of

Connector S101 or

OK.

Each resistance

Touch Key Board.

Touch Key Board.

Check resistance of

Key Board.

Replace Touch

incorrect

Resistance

(See page 6)

(ON or OFF).

Circuit Board.

Replace Control

0 volt.

STEP

(1) PROBLEM

No display or mis-display in

B. TROUBLESHOOTING

the display window by

a

touching the keys.

240 volts.

Circuit Board.

1 and Pin 3 after removing

Connector S1 from Control

of connector S1 between Pin

Check 240 VAC power supply

b

- 7 -

OK.

Each voltage

Board.

Control Circuit

Voltage

incorrect.

Board. (See page 5)

Check power supply

voltage on Control Circuit

RESULT

PROBLEM

3-a

Runs

Runs

Normal Door

Sensing Switch.

PROBLEM

3-b

Runs

Circuit Board.

Normal Control

SEQUENCE

OK.

Contact

Normal

contact.

Correct

seating.

Poor

contact.

S102.

of Connector

Check contact

OK.

Continuity

(See page 1)

Adjust or replace

Door Sensing Switch.

No

continuity.

AC 240 Volts.

Circuit Board.

Replace Control

0 Volts.

and Thermal Protector for Cavity.

2. Primary Interlock Switch.

3. Thermal Protector for Magnetron

STEP

CHECK : 1. Power Supply to Oven.

(2) PROBLEM

Cooking operation will not

a

start.

Door Sensing Switch.

with the door closed after

Check continuity of Connector

removing Connector S102 from

S102 between Pins (BK and BL)

- 8 -

Control Circuit Board.

(3) PROBLEM

Oven does not heat up.

H.V. Transformer.

Touch “START” key and

measure voltage between

a

lead for primary winding of

white wire lead and black wire

H.V. Transformer after removing

the wire leads from terminals of

RESULT

Runs

Normal

Magnetron.

Replace

Magnetron.

Runs

Normal H.V.

Capacitor or

H.V. Diode.

H.V. Diode.

Capacitor or

Replace H.V.

Runs

PROBLEM

3-b

Runs

Protector for Cavity.

Magnetron or Thermal

Normal Thermal Protector for

Runs

Motor.

Blower

Normal

Motor.

Blower

Replace

Runs

Circuit Board.

Normal Control

Control

Replace

Circuit Board.

SEQUENCE

Normal H.V.

Capacitor or

H.V. Diode.

Check H.V. Capacitor

Defective

or H.V. Diode.

H.V. Capacitor

(See page 5)

Ohm-Meter after

removing lead wires.

or H.V. Diode with an

OK.

Resistance

Normal H.V.

Transformer.

Replace H.V.

Transformer.

incorrect.

Resistance

Normal

operation.

Protector

Magnetron

Protector for

Replace Thermal

Normal

operation.

for Cavity.

or Thermal

No

incorrect.

Resistance

Temporarily

Thermal

terminals of

short across

operation.

Normal

Measure

No

Protector

Motor

of Blower

resistance

operation.

or Thermal

Protector for

for Magnetron

resistance

Approx.

295 Ohms.

jumper lead.

Cavity by using

STEP

b

H.V. Transformer.

removing lead

each winding after

Check resistance of

wires. (See page 4)

- 9 -

(4) PROBLEM

Low Microwave

a

Power output.

touched.

“START” key is

Check operation of

Blower Motor when

RESULT

rise exactly.

temperature

No problem.

Measure water

Runs

Runs

SEQUENCE

On and Off.

Voltage cycles

Circuit Board

Normal Control

Circuit Board

Replace Control

240V

Circuit Board

Normal Control

Circuit Board

Replace Control

H.V. Transformer.

STEP

(5) PROBLEM

The Magnetron operates on

high level when a lower

a

cook power is selected.

Touch “START” key and

measure voltage between

H.V. Transformer after

lead for primary winding of

removing the wire leads from

white wire lead and black wire

at “50”.

Set power level

terminals of H.V. Transformer.

- 10 -

(6) PROBLEM

No buzzing by touching keys

a

and at the end of cooking.

Check normal operation

of Control Circuit Board.

7. DISASSEMBLY INSTRUCTIONS

• OVEN MUST BE DISCONNECTED FROM ELECTRICAL
OUTLET WHEN MAKING REPLACEMENTS, REPAIRS,
ADJUSTMENTS AND CONTINUITY CHECKS BEFORE
PROCEEDING WITH ANY REPAIR WORK. AFTER
DISCONNECTING, WAIT AT LEAST 1 MINUTE, UNTIL
THE CAPACITOR IN THE HIGH-VOLTAGE AREA
HAS FULLY DISCHARGED.

• WHEN REPLACING ANY DOOR MICROSWITCH,
REPLACE WITH THE SAME TYPE SWITCH SPECIFIED
ON THE PARTS LIST.

A. REMOVING DOOR SENSING SWITCH

(Figures 1 on page 1, 11-a)

(1) Disconnect all wire leads from the Door Sensing

Switch. (Figure 1 on page 1)

(2) Remove 2 screws securing the Lever Stopper.

(3) Push the Door Sensing Switch upward while pressing

adjacent upper switch stopper of Lever Stopper and
lower switch stopper down (Figure 11-a).

(4) Then remove it by lightly pressing the switch toward

you (Figure 11-a).

B. REMOVING PRIMARY INTERLOCK SWITCH

AND INTERLOCK MONITOR SWITCH

(Figure 11-b)

(1) Disconnect all wire leads from Primary Interlock and

Interlock Monitor Switch.

(2) Pull the Primary Interlock Switch or Interlock Monitor

Switch upward at the same time while pushing the
switch stoppers to allow a space between the
switch body and catches.

(3) Make necessary adjustments or replacement of

switch by the reversing step (2) and check micro­wave energy leakage according to “ 1. ADJUSTMENT
PROCEDURES ” on page 1, after it is replaced with
new one, and check proper operation of it according
to “ CHECKOUT PROCEDURE FOR SWITCHES ”
on page 6.

Switch Stoppers

(5) Make necessary adjustments or replacements of the

Door Sensing Switch by reversing step (3) and check
microwave energy leakage according to
“1. ADJUSTMENT PROCEDURES” on page 1, after it
is replaced with new one, and check proper operation
of it according to “CHECKOUT PROCEDURE FOR
SWITCHES” on page 6.

Upper
Switch
Stopper

Door

Sensing

Switch

Lower

Switch

Stopper

Figure 11-a

Interlock
Monitor
Switch

Primary
Interlock
Switch

Switch Stoppers

Figure 11-b

Interlock Switch Replacement - when replacing
faulty switches, be sure switch mounting tabs are
not bent, broken or otherwise deficient in their
ability to secure the switches in place.

- 11 -

C. REMOVING BLOWER MOTOR

(Figures 12 (Top View) and 13).

(1) Remove screw securing the stay.

(2) Disconnect all lead wires from the Blower Motor

and H.V. Capacitor.

(3) Remove 2 screws securing the Blower Base and

disengage 3 hooks from the Rear Plate of Cavity
(Figure 13).

(4) Remove 1 screw securing the Blower Motor with

the Blower Base.

D. REMOVING MAGNETRON

(Figure 12 (Top View))

After removing the Blower Motor :

(1) Remove Duct (mag. exhaust). Remove the screw

securing the stay.

(2) Remove 1 screw securing the Thermal Protector.

(3) Disconnect 2 lead wires from the Magnetron.

Duct (mag. exhaust)

Thermal Protector

Stay

Blower Base

Screw

Duct (mag. intake)

Figure 12 (Top View)

(4) Remove 4 screws securing the Magnetron to the

Waveguide.

(5) Take out Magnetron VERY CAREFULLY.

NOTE

1. When removing the Magnetron from the Cavity or
Waveguide, use a proper care so that the dome of
the Magnetron does not hit any adjacent parts of
Microwave Oven.

2. Make sure that the contact face of the Magnetron
Gasket is free from any damage or deformation.

3. Adjust the position of the Magnetron properly, so
that it correctly sits in place and the Magnetron
Gasket is in contact with the mounting rim evenly.

4. While holding the Magnetron under this condition,
tighten mounting screws or nuts with your fingers
temporarily.

5. Further tighten the screws or nuts with a box
wrench, giving one or two turns to each of the
screws (or nuts) alternatively so that the Magnetron
is mounted onto the bracket uniformly.

Hooks

Screws

Blower Motor

Figure 13

6. After replacing the Magnetron, be sure to check the
microwave energy leakage with a leakage detector
and confirm the leakage is below 5mW/cm

2

.

- 12 -

E. REMOVING FUSE

Remove the 8A Fuse with a screwdriver.

NOTE

-- When replacing the 8A Fuse, be sure to use an exact
repair part.

-- If the 8A Fuse blows immediately, check the Primary
Interlock Switch, the Relay 2 (on the Control Circuit Board)
and the Interlock Monitor Switch according to,
“CHECKOUT PROCEDURE FOR SWITCHES” on page 6.
And make sure to check the microwave energy leakage
according to, “1. ADJUSTMENT PROCEDURES” on page
1, when the Primary Interlock Switch, the Relay 2 or the
Interlock Monitor Switch is adjusted or replaced.

-- If the Primary Interlock Switch, the Relay 2 and the Interlock
Monitor Switch operate properly, determine which of the
followings is defective : Control Circuit Board, Blower Motor,
High Voltage Transformer, High Voltage Capacitor, High
Voltage Diode or Magnetron.

F. REMOVING POWER AND CONTROL CIRCUIT BOARD

(See exploded view on page 18 and Figure 14)

(1) Remove the Connector S1, S102 and the Connector for

the Relay 2 from the Control Circuit Board.

(2) Remove 1 screw securing the Control Panel complete to

the Oven Cavity.

Control Sheet

Control Frame

Control Base

Figure 14

Control Frame

(3) Remove the FPC Connector from the Connector S101

while grasping up both lever ends of the plastic fastener.

(4) Remove 2 screws securing the Control Circuit Board to

the Control Base.

(5) Lift up the Control Circuit Board from its lower side and

take it out from the Control Base.

G. REMOVING TOUCH KEY BOARD

(Figure 15)

After removing the Control Circuit Board :

(1) Remove Control Base while lifting it up at the right side

and take it out from the Control Frame.

(2) Remove Control Sheet which is glued to Touch Key Board.

(3) Remove the Touch Key Board which is held on the Control

Frame with the adhesive tape.

Touch Key
Board

Figure 15

- 13 -

H. REMOVING DOOR

(1) Remove 2 hex nuts securing the upper hinge.

(2) Tilt the top of the door toward you.

(3) Lift up the door to remove it.

NOTE

-- After replacing the Door, be sure to check that
the Primary Interlock Switch, the Door Sensing
Switch and the Interlock Monitor Switch operate
normally. (See page 1).

-- After replacing the Door, check for microwave
energy leakage with a leakage detector.
Microwave energy leakage must be below the
limit of 5mW/cm
uncertainty.

2

to allow for measurement

J. REMOVING CAVITY COVER

(Figure 17)

(1) To detach the Cavity Cover from light side of the Oven

Cavity. Insert a thin flat-screwdriver between Cavity
Cover and Cavity wall and turn the Cavity Cover anti-

clockwise slightly.
(2) Take Cavity Cover off VERY CAREFULLY.
(3) In case that the Antenna has been cracked or burnt, it

must be replaced. Place each parts as shown in

Figure17, when installing new Antenna.

(4) Make sure to insert the pin of Cavity Cover to the hole

of Cavity wall.

Cavity Cover

Special
Washer

I. DISASSEMBLING DOOR

(Figure 16)

(1) Insert a thin flat-blade screwdriver between the

Choke Dielectric and the Door Main Frame and lift
up the Choke Dielectric to release hooks one by
one. (Figure 16).

(2) Remove the Choke Dielectric.

(3) To detach the Door Cover, insert a thin flat-blade

screwdriver between Door Cover and Door Panel
and release the projections inside Door Cover.

(4) To detach the Door Panel, insert a thin flat-blade

screwdriver between the Door Cover and Door
Main Frame.

Hooks

Hooks

Door
Main
Frame

Clip

Antenna

Assy Comp.

Antenna Comp.

Figure 17

K. REMOVING TURNTABLE MOTOR COVER

(Figure 18)

(1) Turn over the oven on its back.

(2) Cut the 6-joints of the Bottom Plate using diagonal

pliers (nipper).

(3) Separate the Motor Cover from Bottom Plate.

(4) Remove 2 screws securing Turntable Motor to the

Cavity and take it out.

Note : Bent the cut joints inside slightly for safety

and be careful of sharp edge.

Hooks

6 Joints

Motor Cover

Bottom Plate

Choke
Dielectric

NOTE

-- The Choke Dielectric may be damaged when it is
removed. When reinstalling it replace it with new
ones if it is damaged.

-- After installing the Door in place, check for microwave
energy leakage with a detector. Microwave energy
leakage must be below the limit of 5mW/cm2 to
allow for measurement uncertainty.

Hooks

Figure 16

Figure 18

- 14 -

8. EXPLODED VIEW AND PARTS LIST

CAVITY PARTS

*** ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING

APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED
BY A TRIPLE ASTERISK (***).

Key

Part No. Description Q’ty

No.

1 617 228 8321 Cabinet, (V3410WW) 1

1 617 224 4082 Cabinet, (V3410WS) 1

2 411 082 5201 SCR TPG TRS 4 x 10 Z1 7
3 411 160 6007 SCR TPG TRS + SRT 4 x 10 Z1 4
4 617 243 6890 Power Cord 1
5 411 160 6106 SCR S-T TRS + SRT 4 x 10 Z1 2
6 617 228 7614 Oven Cavity*** (Not Service Part) 1
7 617 225 0748 Gear Motor 1
8 411 010 5808 SCR EVR PAN 4 x 10 Z1 2
9 617 138 5601 Bottom Plate*** (Not Service Part) 1
10 617 221 6089 Plastic Foot with Canoe Clip 4
11 411 011 0802 Bolt Hex+SW+W 5 x 14 Z1*** 2
12 617 223 3116 Hinge, Lower*** 1

(Also order Circuit Diagram when
replacing Cabinet)

(Also order Circuit Diagram when
replacing Cabinet)

Key

Part No. Description Q’ty

No.

13 411 089 2500 Washer F5 x 10 x 0.8 1
14 617 120 8481 Insulation Sheet 1
15 617 220 9401 Turn Table Shaft 1
16 617 204 9489 Roller Base Assy 1
17 617 200 0657 Rotating Tray 1
18 617 228 9915 Antenna Assy Complete 1
19 617 228 7232 Cavity Cover 1
20 617 230 0931 Clip 1
21 411 006 6604 SCR TPG PAN 3 x 6 Z1 1
22 617 200 0381 Thermal Fuse 167oC1
23 617 080 5315 Special Washer 1
24
25 617 228 7836 Special Washer 1
26 617 228 7638 Antenna Complete 1

- 15 -

SWITCHES AND MICROWAVE PARTS

*** ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING

APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED
BY A TRIPLE ASTERISK (***).

Key

Part No. Description Q’ty

No.

1 411 082 5201 SCR TPG TRS 4 x 10 Z1 9
2 617 208 0260 H.V. Transformer,*** YS-X670SAP 1
3 617 228 7058 Stay, Cavity & Magnetron 1
4 411 006 6604 SCR TPG PAN 3 x 6 Z1 1
5 617 124 1235 Thermostat, Magnetron 122oC1
6 415 002 6101 Magnetron,***2M219H(B)A- 1
7 423 022 7503 Fuse, 250V 8A 1
8 617 213 3416 P.C.B. 1
9 617 208 0406 Lead Wire Ass’y (including Diode) 1
10 617 162 1990 Blower Base 1
11 617 237 3188 H.V. Capacitor including Resistor, 1

12 617 182 2373 Capacitor Band 1
13 411 011 5609 Bolt Hex 4 x 10 Z1 4
14 617 228 7577 Duct, Mag. Exhaust 1
15 617 110 3618 Lamp, 240V 25W 1
16 617 124 1280 Lamp Socket 1
17 617 229 3769 Blower Motor 1

1.10uf 2.4KV

Key

Part No. Description Q’ty

No.

18 411 082 5201 SCR TPG TRS 4 x 10 Z1 2
19 617 196 8507 Blower Fan 1
20 617 124 1181 Latch Lever*** 1
21 617 220 4529 Micro Switch,*** Primary Interlock 1

22 617 220 4536 Micro Switch,*** Interlock Monitor 1

23 617 220 4529 Micro Switch,*** Door Sensing 1

24 617 124 1198 Latch Lever*** 1
25 617 124 1174 Lever Stopper*** 1
26 411 102 5907 SCR ETG TRS 4 x 10 N2 2
27
28 617 226 2987 Harness, Door Sensing 1
29 617 124 3796 Lead Wire Ass’y 1
30 411 102 5808 SCR ETG TRS 4 x 10 Z1 1
31 411 001 4704 SCR S-T PAN 4 x 10 Z1 1
32 617 228 7690 Duct, Intake 1
33 411 160 6106 SCR S-T TRS + SRT 4 x 10 Z1 1

V-5230Q

V-5220Q

V-5230Q

- 16 -

DOOR PARTS

*** ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING

APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED
BY A TRIPLE ASTERISK (***).

Key

Part No. Description Q’ty

No.

1 617 243 3455 Door Cover*** (V3410WW) 1
1 617 229 6234 Door Cover*** (V3410WS) 1
2 617 228 0783 Door Panel*** (V3410WW) 1
2 617 229 6418 Door Panel*** (V3410WS) 1
3 617 228 7591 Door Main Frame*** (V3410WW) 1

3 617 229 6227 Door Main Frame*** (V3410WS) 1

(Also order Door Sheet when
replacing Door Main Frame)

(Also order Door Sheet when
replacing Door Main Frame)

Key
No.

4 617 228 6242 Choke Dielectric*** 1
5 617 228 9878 Door Sheet 1
6 411 054 1903 Nut Hex + Flg W / SRT 5*** 2
7 617 223 3109 Hinge, Upper*** 1
8 411 011 0802 Bolt Hex+SW+W 5 x 14 Z1*** 2
9 617 101 1494 Spring*** 1
10 617 228 6068 Door Latch*** 1

. Description Q’ty

Part No

- 17 -

CONTROL PANEL PARTS

*** ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING

APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED
BY A TRIPLE ASTERISK (***).

Key

Part No. Description Q’ty

No.

1 617 239 7924 Control Sheet*** (V3410WW) 1

1 617 240 9016 Control Sheet*** (V3410WS) 1

2 617 239 7801 Touch Key Board*** (Also order 1

3 617 235 7089 Control Frame*** (V3410WW) 1
3 617 229 6357 Control Frame*** (V3410WS) 1

(Also order Touch Key Board
when replacing Control Sheet)

(Also order Touch Key Board
when replacing Control Sheet)

Control Sheet when replacing
Touch Key Board)

Key

Part No. Description Q’ty

No.

4 617 228 0752 Control Base*** 1
5 411 160 6205 SCR TPG TRS+SRT 4 x 10 Z1 1
6 617 237 4116 Power & Control Circuit Board*** 1
7 411 129 5805 SCR TPG BIN 3 x 10 Z1 2
8 617 080 9559 Spring, Door Release Lever*** 1
9 617 235 7072 Door Release Lever***(V3410WW) 1
9 617 229 6302 Door Release Lever***(V3410WS) 1

PRINTED MATTER (Items Not Illustrated)

Key

Part No. Description Q’ty

No.

617 239 8020 Operating Inst. (English) 1
617 242 5375 Carton Box Complete (V3410WW) 1
617 242 5382 Carton Box Complete (V3410WS) 1
617 239 7764 Name Plate (V3410WW) 1
617 240 8996 Name Plate (V3410WS) 1
617 239 7795 Circuit Diagram 1

- 18 -

CONTROL CIRCUIT BOARD
(Part No. 617 237 4116)

47100

- 19 -

CONTROL CIRCUIT BOARD

(Part No. 617 237 4116)

Key No. Order Part No. Description Q’ty

INTEGRATED CIRCUIT

IC11 409 493 2100 IC LM8905-323FP. 1

TRANSISTORS

Q903 405 141 5608 DTC114YKA-T146K 1

Q901 405 138 8506 TR FMA9A. 1

Q104 405 011 8401 2SC1740S-Q-TP. 1

Q101 405 137 5803 DTA123YSATP. 1

Q11, 140, 405 004 3000 2SA564A-Q-TP. 3

141

Q105 405 138 9909 DTA114ESA-TP. 1

Q102 405 161 6807 DTC143XSA-TP. 1

Q12 405 125 0902 2SB1238-TV2-Q. 1

DIODES

D11, 12 407 012 0200 1N4002-TP. 2

D101~106 407 012 4406 1SS133-T77. 7
108

ZD101 407 132 2306 HZS3.9NB2. 1

ZD11 407 057 0500 RD5.6ESB3. 1

ZD12 407 054 5000 RD13ESB2-TP . 1

CAPACITORS

C102 403 002 4708 Ceramic, 0.1 mfd, 1

C103, 106, 403 069 8305 Ceramic, 0.01mfd, 4
107, 1 09 +-5%, 50V.

C101 403 147 8807 Electrolytic, 1mfd, 1

C13 403 147 8609 Electrolytic, 47mfd, 1

C14 403 044 1109 Electrolytic, 47mfd, 1

C12 403 160 8709 Electrolytic, 470mfd, 1

C11 403 232 7104 Electrolytic, 100mfd, 1

RESISTORS.

R901, 907 401 037 5400 MT-Glaze, 1K ohms 2

R902, 916 401 037 5608 MT-Glaze, 10K ohms 2

R905 401 038 0701 MT-Glaze, 2.2K ohms 1

R910 401 038 3603 MT-Glaze, 3.3K ohms 1

R928 401 038 6406 MT-Glaze, 4.7K ohms 1

+-5%, 25V.

+-20%, 50V.

+-20%, 10V.

+-20%, 16V.

+-20%, 25V.

+-20%, 25V.

+-1%, 10W.

+-1%, 10W.

+-1%, 10W

+-1%, 10W.

+-1%, 10W.

Key No. Order Part No. Description Q’ty

RESISTORS.

R111, 118 401 012 5609 Carbon, 1K ohms 3

119 +-5%, 1/4W.

R26, 108, 401 012 6903 Carbon, 10K ohms 4

141, 144 +-5%, 1/4W.

R140, 143 401 013 5202 Carbon, 1.2K ohms 2

R55, 56 401 013 6308 Carbon, 12K ohms 2

R20 401 014 4006 Carbon, 1.5K ohms 1

R22, 23 401 016 1409 Carbon, 22 ohms 2

R11 401 016 3700 Carbon, 2.2K ohms 1

R104, 106 401 016 4707 Carbon, 22K ohms 2

R115 401 017 1705 Carbon, 2.7K ohms 1

R142, 145 401 018 2701 Carbon, 330 ohms 2

R53, 54, 401 020 2805 Carbon, 47K ohms 4

103, 109 +-5%, 1/4W.

RESISTOR BLOCK

RB902 402 080 7601 MT-Glaze, 1K x 4 1

RB903 402 083 2108 MT-Glaze, 4.7K x 4 1

RB901 402 083 2504 MT-Glaze, 100K x 4 1

MISCELLANEOUS

BZ1 420 000 6800 Buzzer, PKM22EPT. 1

VST1 407 118 5505 Varistor ENC 471D-10A. 1

RL1 617 201 3978 Relay, G5N-1A-DC12. 1

RL2 617 141 0549 Relay, DU12D1-1PR. 1

RS1 617 128 3372 Ceramic Oscillator. 1

S1 617 180 5888 Connector. 1

S101 617 126 8959 Connector. 1

S102 617 226 6510 Connector. 1

PT1 617 230 7541 Step-Down Trans. 1

LED1 ~ 4 407 217 3808 LED AAPY1211C-TR 4

JB1, 2 617 132 5744 Noise Filter. 2

LCD1 617 235 9120 Control Plate 1

LCD 617 237 3430 LCD 1

LCD1 617 235 9090 Part Base 1

LCD1 617 243 8672 Part Base 1

J11

15 617 079 4299 Jumper. 6

~

50
J101~108 617 079 4237 Jumper. 9
110

+-5%, 1/4W.

+-5%, 1/4W.

+-5%, 1/4W.

+-5%, 1/4W.

+-5%, 1/4W.

+-5%, 1/4W.

+-5%, 1/4W.

+-5%, 1/4W.

- 20 -

9. OVERALL CIRCUIT DIAGRAM

- 21 -

FEBRUARY 2001. Printed in Singapore

SANYO Electric Co., Ltd.
Osaka, Japan.