Sanyo EM-V758 Supplement Of Service Manual

. .. . . ... ..

.. ....

..’.

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SUPPLEMENT OF SERVICE MANUAL

.“--.

..

. .

Microwave Oven

*O

FILE NO.

I

EM-V’758 (Newzealand)

\

-...

...

..-’

Product Code No. 437-293-51

1

See the service manual of EM-V860 (SM-640126) except the items described in this service manual.

Foreword

,:.. ...

Read this manual carefully, especially precaution on microwave energy, and follow the procedure strictly. Careless ser- - vicing 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) (b)

(c)

(d)

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

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. 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. 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.

SS-640127

ii

–TABLE OF CONTENTS–

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

Test Procedures

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

3

Power Output Measurement ...............................................1

Exploded View and Pans List ........................................4-8

Circuit Diagram ..................................................................... 2

Overall Circuit Diagram ........................................................ 9

I. SPECIFICATIONS

Rated Power Consumption .......

Microwave Output .....................

Frequency ...................................

Power Supply .............................

Rated Current .............................

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

Timer ...........................................

Overall Dimensions ...................

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

Turn Table Diameter ........... ......

Effective Capacity of

Oven Cavity .........................

Net Weight .................................

1400W 900W (Adjustable 130W through 900W) 2,450 MHz?50MHz

240V, 50 HZ

6.0 Amp. Thermal Protector, Open at 122° C for Cavity Thermal Protector: Open at 1350 C for Magnetron

Fuse (Cartridge Type 8 A)

Primary Interlock Switch

Door Sensing Switch and Relay 2 interlock Monitor Switch Electronic Digital, up to 99 min. 99 sec.

525( W) X420( D) X281(H)

mm 350( W) X370( D) X208(H) mm 340mm

26 liters Approx. 16 Kg

2. POWER OUTPUT MEASUREMENT

NOTE

The power output specification 900W on this model is

“rfmeasured with IEC measurement. The power output

I

measured with two (2) liters water is equivalent to 900W in measurement with IEC, when measured with the following power outwt.

(A) 1. Fill two test bowls with each 1 liter water

respectively.

2. Use accurate temperature 0 C and measure each water temperature respectively.

(B) Place the two bowls on glass turntable.

(C) 1. Set cooking time to two (2) minutes. (“2 00”

appears in display)

2. Touch START key and o~erate oven for exactlv two (2) minutes.

(D) 1. Take out the two bowls at once.

2. Stir both water with thermometer ana measure the water temperature rise respectively.

(E) :. Get temperature rise by calculation the difference

(water temperature after cooking minus initial temperature) in each bowl.

2. Then calculate average value(t) of both temperature .~~’.

.. ...

rises in degrees centigrade.

.. .

3. Then work out; Power Output (watt) = 70 x t

(F) Power output shall be in the following range

Average

Microwave

temperature rise

Power Output

(G) Power Output will be influenced by line voltage of

power supply. Consequently, correct power output must be measured within 240V AC* 2 volt while unit is

operating.

: ..

–l–

ii

. .

”. ..”...”. .“

3. CIRCUIT DIAGRAM

.

,.

.

.. .

THERMAL PROTECTOR

FOR CAVITY OPEN 122t5°C

r “i

‘z’

d CAVITYLAMP

L .—

__J

2200PF

=

w

BK

(

THERMAL PROTECTOR

L

FOR MAGNETRON OPEN 135!5°C

w

f

I S1

+

11

I

‘-k

13

I 15

I

I I 1

I I

I I I I 1–.

i

2!3

i

I

650JIH “2

BR

n

I

0.068PF I

I

~

I

! CONNECTOR \

r

GEAR MOTOR

)

BK

“

INTERLOCK i

\ PRIMARY INTERLOCI SWITCH

NC

--(Y

I

BLOWER MOTOR

HIGH VOLTAGE TRANSFORMER

~_–——–_—–.––—– —..

IK

c

CONTROL CIRCUIT BOARD

K

CONNECTOR

J

Slol

l———_--l

——— ——— —

—— — ——— —

TOUCH KEY BOARD

:OM

o

~

\

NO

.—-— ———— ———

1

w

I

● m

)

———— —.

I

o

I

~

I

10MEG.OHM

1

BK

WIRING COLOR

BK : BLACK

BR : BROWN

W : WHITE

BL : BLUE

O : ORANGE

R : RED

Figure 1

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

Parts marked with this sign have special characteristics important for microwave leakage. When replacing any of these parts use only manufacturers specified parts.

El

●NOTE:

CAPACITYI WORKING VOLT

I

1.03MFD2.1KVAC

EM-V758

I

/1. IMFD2KVAC ]EM-v860 I

1

I I

–2–

4. TEST PROCEDURES

cOMPONENT

ONTROL

IRCUIT BOARD

rOUCH KEY 30ARD

CHECKOUT PROCEDURE

Measure the

voltage: Between test points

TP-1, TP-2 or TP-3 and ground between TP-4, and TP-5. (See control circuit board

on page 9 )

NOTE

– Proceed with the check of the step-down

transformer, to see if any one

of the

measured

values is different from the

specified values.

Measure the resistance between terminals, of FPC connector after removing it from SIO1. (Figure 2).

NOTE -

—

When reconnecting the FPC connector,

make sure the holes on the connector are propedy inserted

in hooks of the plastic

fastener

in S101.

MATRIX CIRCUIT FOR

TOUCH KEY BOARD

FPC CONNECTOR

RESULT

I

Test

TP-2 TP-3

TP-41

TP-1

point

TP-5

–

5V

–15V

–25V

2.OV

Voltage DC

Dc DC AC

1--1

I I

I

When

When not

Resistance

touched

value

Less than

More then

lK Ohms

1 MEG Ohm

When checking “START” key, connect ohm-

meter as illustration below

Q

Ohm-meter

1

Top

b;B

t

_-—

-

--

.-—

D

—-

1

--

-I

I

—--

I

—--

0’

-—11

--

—.Z

Al A2

A3

)

A4 A5 c1 C2 C3

)

C4 C5

Figure 2

TERMINALS OF FPC CONNECTOR

..”

–3–

5. EXPLODED VIEW AND PARTS LIST

CAVITY PA

.-.

3

,-

”..

-.

.,

.-

’20

21

8

b“”Al_l_

SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS ID ENTIFIED BY ATRIPLE ASTER ISK(***)

Key

No.

Part No.

Description

Q’ty

1

6171240764

Cabinet

1

2 4110825201 Screw,

Truss Hd. Tapping, 4x10mm

6

3 411 1606007 Screw,

TPG TRS+SRT 4x10mm

4

6171451412

Oven Cavity ***(Nol service part)

1

5 617151 2458

Gear Motor

1

6

411 0105808 Screw, Pan Hd. Machine, 4x10mm, 2

Brass, N1

7

6171385601

Bottom Plate*”*

1

8 6171445435

Plastic Foot with Canoe Clip

4

9

411011 0802 Bolt, Hex. Hd. Machine with Spring

Washer & Bolt Washer,

5X 14mm, 2

Z,***

10

6171240795

Hinge, Lower***

1

11

411 0892500 Washer, 5mm, U

1

12

6170805315

Special Washer

1

–4–

Key No.

Part No.

Description

Q’ty

13

6171322095 Turn Table Shaft

1

14

6171242416

Roller

1

15

6171242393

Rotating Tray

1 16 17 411 0076900 Screw, Pan Hal., Tapping, 3x6mm.

1

C2-2

18 6171241235 Thermostat, Cavity 122°C

1 19 6171208481

Insulation Sheet

1 20 6171184679 Insulation Sheet

1 21 411 1606106 Screw, S-TPG TRS+SRT 4x10mm

1 22 6171246209 Stirrer Assembly

1 23

6171451429 Stirrer Cover

1 24

411 1606205 Screw, Tapping TRS + SRT 4x10mm

1

●

6171385090 Circuit Diagram

1

●

6171583939 Name Plate

1

‘ Items not illustrated.

..

SWITCHES AND MICROWAVE PARTS

ii

2[T’

m

I

Q!L

/

23

Parts msrked with this sign are supplied with high voltage exceeding 250V.

u_

o

Psrts marked with this sign have special

~

characteristics important for micmwsve leakage. When replacing any of these parts use only manufacturers specified parts.

F

No.

1

2 3

4

5 6

7

8

9 10 11 12

13

14

15

16

17

● “* ALL SERVICE CIN MICROWAVE OVENS SHOU

USING APPROVED TESTING EQUIPMENT. CUS7

IDENTIFIED BY ATRIPLE ASTER ISK(***)

Part No.

4110825201

6171385113

6171451641

6171449808 6171385700 4110076900

6171241259 4150021502

4230227503

6171414042

6171451627

6171405354

6171378870 6171395228

6171241082

6171305685 4110772109

Description

Screw, Truss Hd. Tapping, 4x10mm ‘ower Supply Cord Complete

-ligh Voltage Transformer, H5T?04SAP Duct, Msg. Inlet

Stay, Cavity & Magnetron Screw, Pan Hd. Tapping, 3x6mm, C2-2 Thermostat, Magnetron, 135’C Magnetron, 2M219H(B)*** Fuse, 250V 8A Printed Circuit Board Complete Lead Wire Ass’y with Diode Lead Wire

Ass’Y (Transformer to

Capacitor) Capacitor Band

High Voltage Capacitor including Resistor, 1.03uf 2.1 KV Space Partition (810wer)

Blower Motor

Screw, Truss Hd. Tapping, 4x20mm,

Z1-1

Qty

6

1 1 1

1 2

1 1 1 1 1

1

1 1

1

1 2

u“

13’

LD BE PERFORMED

.OMERS SHOULD NO

K

No.

18 19 20 21 22 23 24

25

26 27

28 29

30 31 32

33 34

—

–5–

. .

BY

T AT

lZ

A QUALIFIED TECHNICIAN

‘TEMPT TO REPLACE PARTS

Part No. ~

i17 075 1179 111011 5609 517 1405330 517 1103618 6171241280 6171241181 6171524741

6171525106

6171241174

411 1025808

4120182004

411 1606106

6171325713

4110541903

Description

310wer Fan 3olt HEX 4x20 >uct, Msg. Exhaust Lamp, 240V 25W Lamp Socket Latch Lever”+” Micro Switch, Primary Interlock and Door Sensing V-5930D*** Micro Swtich, Interlock Monitor V-5920D***

Lever Stopper***

Screw, E-Tapping

TRS+TW,

4x12mm, 21

BOLT HEX C-SCT 5x16mm Screw, Tapping TRS+SRT 4x1 Omm

Insulation Sheet

NUT HEX+FLG W/SRT 5

My

1

3 1 1 1 1 2

1

2

2 2

1 2

i

DOOR PARTS

..

G

No.

1

2 3

4

5

/

8***

& /7 *“*

4***

FI

1(J***

/

9 ***

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

USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD

NOT ATTEMPT TO REPLACE PARTS

ID ENTIFIED BY ATRIPLE ASTER ISK(**’)

Part No.

6171514216 6171514223 6171385625

6171520804 6171240931

Description

Door Cover**” Door Panel’”’ Door Main Frame*** (Also cwder Door Shet when replacing

Door

Main Frame) Choke Dielectric*** Door Sheet***

C1’ty

1 1

1

1 1

Key No.

Part No.

Description

C1’ty

6

411 0541903 Nut, Nex. Hd. with Washer, 5mm

2

7

6171240955

Hinge, Upper***

1

8

411 011 0802 Bolt, Hex. Hd. Machine with Spring

Washer and Bolt Washer, 5x14mm, 2

Z1***

9 617101 1494

Spring*”*

1

10

617101 1487

Door Latch’+”

1

–6–

CONTROL PANEL PARTS

6 ***

/

5 ***

\

b

\

2 ***

1

‘,.

g ***

..

● ☛☛

ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD

NOT ATTEMPT TO REPLACE PARTS

ID ENTIFIED BY ATRIPLE ASTER ISK(***)

Key No.

1

PartNo, Description

Q’ty

Key No.

Part No.

I

Description

I

a’ty

Control Sheet (Also order Touch Key Board when replacing Control Sheet) Touch Key Board*** (Also order Control Sheet when replacing Touch Key Board) Control Plate (Display)”’” Control Frame*’*

1

5

6 7 8

9

31_E

6171566598 Control Circuit Board Complete 411 1295805 Screw TPG BIN 3x10mm 6170809559 Spring, Door Release Lever*** 617 151 4339 Door Release Lever***

6171569339

61715143842

1 1

346171514346

6171514360

PRINTED MATTER (Items Not Illustrated)

Key No.

Part No.

Description

Q’ty

I

I 6171569353 10perating Instructions

Ill

I I 6171546477 I Carton BOX

Ill

–7-

ii

CONTROL CIRCUIT BOARD (Part No. 617156 6598)

,.,

.-

r

TP-4

CT’-’

TP-3

—TP-1

TP-2

Ground

–8–

. .. .,.

ii

6. OVERALL CIRCUIT DIAGRAM

AC240V

50HZ

4t4

--t3rq]

P

PRIMARY INTERLOCK

r

SWITCH

BLOWER

MOTOR

~

H

.

~_,*

t

I

1

~1--ih

L

-J

I

I 1

I

L- --

;

t

I

MAGNETRON

-1-

.

1

RU

INTERLOCK MONITOR SWITCH

r

_—— — ——— ———— ————— ——— —*

DOOR

I

SENSING 1

I

S102

CIRCUIT ~

I I

I

Clol

I

D101

R101

0.01 ~

I

1ss333

10K

14 i

DOOR

I

SENSING

~___$’’!Iw– __

470Q 4700

.__— ——— ———— .——

J

D102

4

I

1SS132

—-——-

1 POWER

1 DTC143X

RU

1$

I CONTROL

I

~ CIRCUIT

.—————

MAIN CONTROL CIRCUIT

1

—J

———— ———— ————— ——

I 1(

o---i-

OPEN ,

L

D103 1SS132

..

4

I

D104 1 N4002

I

---3107 I

13U

p

——

J

.—— — ——

GEAR

C2107 DTA143X

r

D114

,

MOTOR

1

1SS132

t

ICONTROL

I

\clRclJ]T

w&--

RL4

R141 3300

*__––__

————— ———— --

I I

D105 Rlll R11O 1SS133 3.9K 180K

4

I

C2104

I

C1685

I

t

I

BZ1

-1

-15V o

2KHZI—-— ——— ——— —— ——— ,

In

‘L–––––––––-J

L:

1

I

\INITIALIZATION IcIRCUIT

I

w

R113 ‘-–—

] 0105

IK

~loK

I DTA123Y

I I R,,5 I 2.2K .—-— —

47K

ZD101 RD3.9ESB2

Cloz;

R114

‘luF ,

0106

10K

1ss133

/50v

I

J_. _—— —–l

~–––—–-–––––––––

I

A

I

-— ——

:__: K-––––+–_––+

Dll 1N40V4

Zoll

R05. 6ESB3

M

k

I

T

Clo:

4

T

I

0107 0.01 p

Rll

1SS132

/50y

cl 1 +

4.7K

1000”

zz

w

I

/25V

R116

R118

I

lK

10K

~-5v

I

R117

I

011 A564A R16

I

1

10K

- 5V

I

1

a,

O-15V

c

R12

I TIME

BASE

I

g

I

C12

I

Ioo”z z

; cIRCUIT

I

135V

i

——— ——— —— ___

I

O -25V

I

D12 D13

S31

I

1N400ZX2

R17 5.6K

I

w

t

T

R13 220’3

‘v’ ~ -5v3~G

,-.

I

Q VF

C106

R119

I

2ZOP/50V 1K

PT1 PD5M-V758

POWER SUPPLY CIRCUIT;

_——__— ——— ——

———

_—— ——— ——— ———— ——

..’

-.’ ..

–9–

.. . ... .

. ..

i

1----------------------------------------

:.

.’

,.

--

i I

I I I 1

30

EO

El

E2

D2

D3

R=

m

)Scl

)SC2

DT1

●

[PD]E3 ‘*

19 ~~

F1

(PD)FO 24

:; 6G

F1

(PD]F1 25 (PD)F2 26

5G Nf

:; 3G NI

(’;:)’: .=

,4 2G

K

lG ~

Fi

[PD)G1 .29

12 ~“

[PD)G2 30

11

0

B:

(PD)G3 -31

10

(PDIHO 32

~ Ctl

D ~NC

(PD]H1 33

8 E@ {PD)H2 .34 7 F :;:: : : G

M

I

I I

-——— ———-

h

i I f

C107

3!5

0.01 p/5ov

VP

I

-25V

I

.>

e .<

t

AO 4’

A.,

cl

I 6 E

II R126 10K

...

~J42

1-

11 C25

●

QUICK

14 ‘ ! 7 ! ‘w’ ! ‘ET ! ‘:::TI

OEFROST

m

N

-.,

! ...

R127 10K

FROZEN

8

VEGE- ,Ay:gFF POTATO

TABLES

I

I I

KEY BOARD CIRCUIT

.—— ————

II

R129 10K

!ml

I

. .

B1

s

II

%/j

4 I ;

,.

IT

Ii

R130 10K

[ L– – –– ––RB101 L––-b – –-–– – _

——— ——— ——— —-— ——— —

100K x5

4 I

CIF==--=H

H

C2 9

R134 10K

C3 ‘0

R135 10K

DO 11

R136 10K

“M

F

— 39 HOLO

b

40

-5V

VDD

C104

0.1”

21

125V

Vss

TEST 20

-5V

–lo–

Printed in Japan

.,.

..’. .’

*O

—

SANYO Electric Co., Ltd. Osaka, Japan

Sanyo EM-V758 Supplement Of Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual