Sanyo EM-F301WS Supplement Of Service Manual

SUPPLEMENTOF
SERVICE MANUAL

Microwave Oven

FILE NO.

EM-F301 WS (New Zealand)

c

/’”

/

Product Code No. 43737615

See the service manual of

EM-S829(SM-860043) except

the

items described in this service manual.

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.

I

PRECAUTIONS

I

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO

EXCESSIVE MICROWAVE ENERGY

I

(a) Do not operate or allow the oven to be operated with the door open.

I

(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 transmis-

sion systems shall be repaired, replaced. or adjusted by procedures described in this manual before the oven is
released to the owner.

1

I

REFERENCE NO. SS-860090

-+ m

— TABLE OF CONTENTS —

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1

Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

PowerOutput Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Circuit Diagram . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . ...2

Exploded Vlewand Parts List . . . . . . . . . . . . . . . . . . . . ...5- 9

Overall Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . ...10

1.SPECIFICATIONS

Rated Power Consumption .... 1260W.

Microwave Output .... ........... 850W.

Frequency ...................... . .. 2,450 MHz*50MHz.

Power Supply ...................... 230V-240V.50HZ.

Rated Current ...................... 5.5Amp.

Safety Devices ....................

Thermal Protector, Open at 122°C
for Cavity.

Thermal Protector, Open at 122-C
for Magnetron.

Fuse (Cartridge Type 8A).
Primary Interlock Switch.
Door Sensing Switch and Relay2.

Interlock Monitor Switch.

Timer

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

99 min. 99 sec.

Overall Dimensions ...... ...... 525(W) x418( D)x283(H) mm.

Oven Cavity Size ..................

350(W) x 371(D) x 208(H) mm.

Turntable Diameter .............. 340mm.

Effective Capacity of

Oven Cavity ..... ............. 261iters.

Net Weight ............................ Approx.18 Kg.

2. POWER OUTPUT

NOTE

MEASUREMENT

The power output specification, 850W on this model is measured
with IEC measurement. The power output is measured with two (2)

liters water is equivalentto850W in measurement with lEC, when
measured with the following power output.

(A) 1. Fill twotest bowls with eachl Iiter water respectively.

2. Use accurate thermometer and measure each

water

temperature respectively.

(B) Place thetwobowls on glass turntable.

(c)

(D)

(E)

(F)

(G)

1.

2.

1.

2.

1.

2.

3.

Set cooking time to two (2) minutes. (“2 OO-appears in
display)
Touch START key and operate oven for exactly two (2)
minutes.
Take out the two bowls atonce.
Stir both water with thermometer and measure the water
temperature rise respectively.
Get temperature rise by calculating the difference (water
temperature after cooking minus initial temperature) in
each bowl.
Then calculate average value(t)of both temperature rises
in degrees centigrade.
Then workout;

Power Output (watt) =70xAt

Power output shall be in the following range:

Average

Microwave

temperature rise

Power output

RE-i-=i

I

I

1

Power Output will be influenced by line voltage of power
supply. Consequently, correct power output must be
measured within 240V AC t 2 volts while unit is operating.

—

–l–

3. CIRCUIT DIAGRAM

N

@L

1-1

POWER CORD

t POWER CORD

GR%ND

,—— ———— .

I

CAVITY

‘- PROTECTOR

r 122w5°C

-1

----- -.

I

THERMAL

d“’”

‘

C2

WI

C3 ~

OPENS AT

BL

n

MAGNETRON

IN

L

BL

THERMAL PROTECTOR

— — — — —.

CAVITY

OPENS AT 122f5°C

w

LIGHT

/ >

w

BK

INTERLOCK MONITOR

w

SWITCH

@ lNTE~%!!&TCH

t

NC

COM

Y

L

w

Y

I BLOWER MOTORly

W

Y

w

GEAR MOTOR

w

1.

———.

-N

I

[

w

–1

HIGH VOLTAGE TRANSFORMER

—— —— —— —— —

—— —

1

—-l

I

P1

11

kid

1
STEP DOWN
TRANSF~RMER

———

3

BL

I

———————

I_

——

—

* FUSE DIODE

4 KVDC

F

H

@

~{11!42

I

CIRCUIT

I

BOARD m I r

TOUCH

KEY

BOARD

L————_———_—_ _ul

(

J

BK

WIRINGCOLOUR
BK : BLACK

o :OFwiGE

BL : BLUE
W : WHITE
Y :YELLOW
R :RED

Pane markadwith this signareauppfiedwith
highvoltage exceeding 250V.

Partsmarkadwiththis sign havespatial
characteristicsimpatant for microwaveleakage.
When replacingany of these parts useonly
manufacturersspacifiadparts

Figure 1

I

SECONDARYINTERLC)CK ]

I

PRIMARY INTERLOCK DOOR

SWITCHMADE.

INTERLOCK MONITOR SENSING
SWITCH

I

RELAY2

SWITCH SWITCH

I

CONDITION

COM COM

COM COM

NO

NC

NO NO

I DOOROPEN I

1“1 I I

DOORCLOSE

. .

.

–2–

—

–3–

5. DISASSEMBLY INSTRUCTIONS

L

L

A. REMOVING BLOWER MOTOR

(Figures 3 (Top View) and 4)

(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 4)

(4) Remove 1 screw securing the blower motor with

the blower base.

B. REMOVING MAGNETRON

(Figure 3 (Top View))

After removing the blower motoc
(1) Remove duct (msg. intake) and duct (msg.

exhaust).
(2) Remove 1 screw securing the thermal protector.
(3) Disconnect 2 lead wires from the magnetron.
(4) Remove 4 screws securing the magnetron to the

waveguide.

(5) Take out magnetron VERY CAREFULLY.

NOTES

1. When removing the magnetron from the cavity or
wave guide, 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 on to the bracket uniformly.

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

NOTES

When inserting duct (msg. exhaust), overlap the lower
tab of the duct onto the magnetron, at the same time
ensure the hook on the duct is properly engage to the
magnetron (See figure 5),

Blower base

Duct (msg. exhaust)

I

slay

Duct (msg. intake)

Figure

3 (Top View)

Screw

\–

—. ~

.~

)2

:::::;...........

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

..............-

3 Hooks

................-

..... .....-

Sciews

Figure 4

Screws

Upper Hook

,A, ~~:~$~

I

Magnetron

oust

(mag, exhaust)

‘1

Lower Tab

Overlep onto
magnetron

Figure

5

–4–

6. EXPLODED VIEW AND PART LIST

CAVITY PARTS

‘\

1

/24 4

—

&-24 “$

*** 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 (’**)

[ey

Parl No.

Description

Q’ty

do.

1 6171862072

Cabinet

(AleQorder circuit diagram

1

when replacing Cabinat)

2

4110625201 SCR TPG TRS 4X1O21

8

3

411 1606007

SCR TPG TRS + SRT 4X10mm

4

4

6171365113

Power Cord

1

5
6 6171814217

Oven Cavity ‘“ (Not Service Parts)

1

7 6171512458

Gear Motor

1

6

4110105808

SCR EVR PAN4XI021

2

9 6171365601

Bottom Plate ‘“ (Not Service Parts)

1

10 6171445435

Plaatic Foot with Canoe Clip

4

11 4110110602

Bolt Hex + SW + W 5X14mm 21

● “’

2

—

:ey

40.

12
13
14
15
16
17
18
19

20
21
22
23
24

—

Part No.

6171606137

4110892500
6171208481
6171444476
6171812657

6171242393

6171814246

6171621938

4110691707

4110076900

6171241235

6170805315

411 1606106

Description

Hinge, Lower “+’
Washer F 5x1OXO.8
Insulation Sheet
Turn Table Shatt
Roller
Rotating Tray
Antenna
Cavity Cover
SCR TPG TRS 4X6 DA
SCR TPG PAN 3X621
Thermostat, Cavity 122°C
Special Washer
SCR S-T PAN 4XI021

Q’ty

1

1
1
1
1
1
1
1
1
1
1
1
2

–5–

SWITCHES AND MICROWAVE PARTS

4

L

•1

Patis marked with this sign are supplied with
high voltage exceeding 250V.

o

~ Parts marked with this sign have special

characteristics important for microwave
leakage. When replacing any of these parts use
only manufacturers specified 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 (***)

{ey Part No. Description

Q’ty

No.

1 4110825201 SCR TPG TRS 4XI0 ZI

8

2 6171742084

H,V,Transformer, N5T-S728SAP 1

3 6171718708

Stay, Csvity & Msgnetron 1
4 4110076900 SCR TPG PAN 3X6 Z1 1
5

6171241235

Thermostat, Magnetron, 122°C

1

6

4150026002

Magnetron, 2M218H(N) A ‘“

1

7 4230227503

Fuse, 250V 8A

1

8 6171850024

PCB Complete 1
9

8171805741 Lead Wire Ass’y (including Diode) 1

10

6171621990

Space Partition (Blower)

1

11

6171857139

High Voltage Capacitor including 1

Reaiator, 0.97pf 2,4 KV

12 6171822373 Capacitor Band 1
13 4110115609

Bolt Hex 4x1 OZ1

4

14 6171812534

Duct, Msg. Exhaust

1
15 8171103618 Lamp, 240V 25W 1
16 6171241280 Lamp Socket 1
17 6171670592 Blower Motor 1

[ey Part No.

Description

Q’ty

~o.

18 4110825201 SCR TPG TRS 4XI0 ZI 2
19 6171121025

Blower Fan 1

20 6171241181

Latch Lever’” 1

21

6171670523

Micro Switch, Primary Intsrlock

1

V-5P030FBX129””’

22 6170045575

Micro Switch, Intsrlock Monitor

1

V-5220DZ””

23

6171670523

Micro Switch, Door Sensing 1

V-5P030FBX1 29’”
24
25 6171241174

Lever Stopper””’ 1
26

411 1025907 SCR ETG TRS 4X1 O N2 2
27
28 6171173505

Harness, Door Sensing 1

29 6171243796

Lead Wire Ass’y 1

30 6171325713

Insulation Sheet 1

31

4110014704 SCR S-T PAN 4XI0 ZI

1
32
33

411 1606106 SCR S-T PAN 4X1O Z1

1

-6-

DOOR PARTS

1***

\

/

\

*** 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

No.

1

2
3

4
5
6

Part No.

6171793079
6171614170
6171814156

6171240948
6171240931
4110541903

Description

Door Cover ““
Door PaneI “’”
Door Main Frame ‘** (Also order Door
Sheet when replacing Door Main Frame)
Choke Dielectric ‘“
Door Sheet
Nut Hex + Flg W/SRT 5 ‘“’

1

Q’ty

1
1
1

1
1

2

Key
No.

7
8
9

10

Part No.

6171806151

4110110802
6171011494
6171792478

Description

Hinge, Upper “’”
Bolt Hex + SW + W 5X14 ‘“
Spring ‘“
Door Latch ‘*’

1

Q’ty

1
2

1
1

–7–

CONTROL PANEL PARTS

6**,

L

\

3***

“1

2***

\

b

5

4***

!

\ P

9***

PERFORMED BY A QUALIFIED TECHNICIAN USING

*** ALL SERVICE ON MICROWAVE OVENS SHOULD BE

APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS

IDENTIFIED BY A TRIPLE ASTERISK (***)

—

(ey

Part No. Description

Q’ty

flo.

1 6171659346 Control Sheet”” (Also order Touch Key

1

Board when replacing Control Sheet)

2 6171859355 Touch Key Board “’” (Also order Control

1

Sheet when replacing Touch Key Board)

3 6171795981

Control Frame ‘“’

1

4 6171514377

Control Base ‘“”

1

PRINTED MATTER (Items Not Illustrated)

Key
No.

Part No.

6171461077
6171857184
6171859379
6171891843
6171891850

Daacription

Q’ty

Cook

Book

1

Operating Inatructiona

1

Carton Box Complete

1

Name Plate

1

Circuit Diagram

1

(ey Part No.

Description

Q’ty

No.

5

4111606205

SCR TPG TRS + SRT 4x1O21

1

6 6171837687 Power & Control Circuit Board”’*

1

7

4111295605

SCR TPG

BIN 3x1O 21 2

8 6170809559

Spring, Door Release Lever

● “*

1

9 6171795929 Door Release Lever *“

1

–8–

EM-F301WSSAP

CONTROLCIRCUITBOARD

.(Part No.617 183 7667)

Key No.

Order parts No. Description

Q’ty

INTERGRATEDCIRCUIT

L

lTRANSErroris

Q 104
Q 102, Q 103

409378 7404 IC LM8749B-

1

453SP

405 082 4619

405 035 4819
405 000 1812

T

DTA123YS. YL

2
2SA1503-AC
2SC1685-Q, R

1
DTA143XS-TP

2

1=

DIODES

D 11
D 101 -D 106
ZD 101
ZD 11

CAPACITORS

407 012 0220
4070124317
407 055 9010
407 0568517

1N4002 1
1SS132 6

RD3. 9ES62

1

RD5. 1ES82

1

,

Ic 11

I 4030453310 I 1000UM 25V

11

u

IRESISTORS

R“ll - 14
R 56
R 52, 105, 107
R 101
R 102
R 106,113,117-121
R 103,110
R 104,109,114
R 122- 126
R 108,130
R 127 - 129
R 111
R 112
R 115,116

401 0134156
401 013 6338
401 020 2835
401 023 1637
401 012 4434
401 020 1957
401 0125639
401 012 6953
401 012 6953
401 016 4757
401 012 8056
401 0183738
401 018 2751
401 016 9653

47UM 10V

1

lUM 50V 1

.,O.lUM 25V 1

O. OIUM 50V

6

I

120 l/4w

12K l/4W

47K l/4W

820 l/4W

100 l/4w

4.7K l/4W
lK l/4W

10K l/4W
10K l/4W

22K l/4W

lOOK l/4W

3.3K l/4W

330 l/4w

27 l/4W

[

4

1

3

1

1
7
2
3
5
2
3

1

1

1

I Key No.

F---

I

r

BZ1

LCD1

RL 1

RL 2
RS 1

Slol
S102
S1
FS1

VST1

PT1

Order parts No. Description

Q’ty

617 010 3541

lOOKOHM*102 1

1/8W

420 000 6800

617 178 6477

617 137 9358

617 141 0549
617 128 3372

6170022330
617 111 1392
617 169 4109
423 018 2901

407 1185505

617 171 2155

Buzzer
PKM22EPT-2001
Display tube
RCO1371R
Relay
OJE-SR-1 12LM
DEC DU12D1-lPI
CERAMIC RES.
CST4. OOMGW-TF
Socket
PLUG 2/3P
PLUG
FUSE 125V 0.41

Varistor
ENC471D-1 OA
Transformer
PD5TK-S150

1

1

1

1
1

1
1
1
1

1

I

See the next page.

CONTROL CIRCUIT BOARD
(Part No. 617183 7667)

() ye’:-----:’!+ q 0’

R127

Icll I

9109

IT

I

I

I

I

o

l121u
1120-

e

{119=

I

I

3118= ‘———————————— —————’

~ z

I - ----

+1+

c102 Rsl~ —

1

C/3

o

TP-1

TP-2

GROUND

–9–

(

7. OVERALL CIRCUIT DIAGRAM

——— ——— .—— — —— —— ——

I

1

1

e~w

I

.—— — ———— ———— ———— ———— ———.

,,,f

Ac2w;240v

ill

-.

FUSE-=,

I

I I

i

——

Ssia :

:: SE(!3

SEG,4 “

“ SEG7

DISP!AY

SQ2, ~

5 SE(I2

I

TUBE

SE= ~

4 SEG,

CIRCUIT

Smml”

‘1SEG,

,

~

14——————— ——————— ——————— __

n, ‘5

.

‘8 1 I

I

o

I

l___––

I
I

I Iwl$l;lm

lo—— ________ _________ _____,

“+-T+ +

E

NW m

w *X

F62

vu

AJNI s

?8

NW

JT

E534~cm

I

F––––––5+:--–’ f% I

J

,ss132

T

22 ~

-—— —— __ __ __ _

f,,

f

I

TIMER BASE

C,,O R,rJ7

Clm

--------- O,olv ~~
1P

1 - ‘T=’ “ “-’ “ ‘;

s, 1 MN

.,,vb “nvp!!iq

[ _CIRCUIT

1“

“1

cl.,

m,,

00,,

CIC5 RMIES= c,,

I*

cl,

0,01,

;C$!J

%,

s>

4V

R,4 R13 R,, R,,

,Ku.4

-1 5V

I

.——

b

I

POWER
SUPPLY
CIIICUIT

PTl PD5TK4, 54

— —

——— ——— ——— ——— ——— ——— —

—

November ‘96/1 00 LT Printed in Singapore

SANYO Electric Co., Ltd.
Osaka, Japan