Sanyo EM-X491S User manual

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FILE NO.
SUPPLEMENTOF EM-X491S
SERVICE MANUAL Microwave Oven EM-)(41 1S(AustraIialNew Zealand)
MODEL NO. PRODUCT CODE
EM-X491 s43745052
IEM-X411S I43745053 I
See the Setvice Manual of EM-X670S (SM-8601 77)
Foreword except the items described in this Service Manual.
Read thie manual carefully, especially precaution on microwave energy, and follow the procedure strictly.
LCareless 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)
(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 necessaty:
(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 compatiments,
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 transmis-
sion systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is
released to the owner.
REFERENCE NO. SS -860277

-TABLE OF CONTENTS -
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Test Procedures . . . . . . . . . . . . . . . . . . . . . . 3-4
Power Output Measurement. ................. 1Exploded View and Parts List... . . . . . . . . . 5-12
Circuit Diagram ............................ 2Overall Circuit Diagram . . . . . . . . . . . . . . . . 13-14 =
1. SPECIFICATIONS
Rated Power Consumption.
Microwave Output. . . . . . . . . .
Frequency ...............
Power Supply .............
Rated Current .............
Safety Devices ............
Timer ...................
Overall Dimensions. . .
Oven Cavity Size . . . . . . . . . .
Turntable Diameter ........
Effective Capacity of
Oven Cavity ..............
Net Weight ...............
1500 w.
1000 w.
2450MHz+50MHz.
230- 240V,50HZ.
6.6 Amp.
Temp. Fuse, Open
at 167CforCavity.
Thermal Protector, Open
at 12T’C for Magnetron.
Fuse (Cartridge Type 8A)
Primary Interlock Switch.
Door Sensing Switch and
Relay 2.
Interlock Monitor Switch.
Electronic Digital, up to
99 rein, 99 sec.
525 (W) X418 (D) X289 (H)
mm,
351 (W) X371 (D) X208 (H)
mm.
275 mm,
28 liters.
Approx. 17 Kg.
2. 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) liters water is equivalent to 1000W in
measurement with IEC, when measured with the following
power output.
(A) 1. Fill two test bowls with each 1liter water respectively.
2. Use accurate thermometer and measure each
water temperature respectively.
(B) Place the two bowls on glass turntable.
(c)
(D)
(E)
(F)
(G)
1
2.
1,
2.
1.
2.
3.
Set cooking time to two (2) minutes. (“2 00 appears
in display)
Touch START key and operate oven for exactly two
(2) minutes.
Take out the two bowls at once.
Stir both water with thermometer and measure the
water temperature rise respectively.
Get temperature rise by calculation the difference
(water temperature after cooking minus initial
temperature) in each bowl. w
Then calculate average value(t) of both temperature
rise in degrees centigrade.
Then work out;
Power Output (watt) =70 xAt
Where At is an Average Temperature Rise in degrees
centigrade. d
Power Output shall be in the following range:
Average Microwave
Temperature Rise Power Output
Minimum
11.2°C 777 w
Maximum
13.PC 966 W
Power Output will be influenced by line voltage of
power supply. Consequently, correct power output
must be measured within 240V AC ~2volt while unit
is operating.
–l-

3. CIRCUIT DIAGRAM ‘“WERC”;DI~iOwERcORD
i
I
IICl =0.22LJF
‘1 =lMn
ILl, L2= 6501JH
1C2, C3 =4700PF
ICAVITY TEMP FUSE
WI FBL OPENS AT 167 *g°C
In
I-——————___
MAGNETRON
i+74’
wCAVITY LIGHT
THERMAL PROTECTOR
OPENS AT 122*5”’ WILL wBK
CLOSE AT 30”C
OR LOWER INTERLOCK MONITOR PRIMARY
SWITCH INTERLOCK SWITCH
NC& COM Y
ww
Ymy
.=’ -------------
HIGH VOLTAGE TRANSFORMER
r
+ ~ L!,
——————..
CONNECTOR 1REUY2 IwI●
IyS1 ——— “CONNECTOR HUMIDITY ~~
I3Is201r _ _ __ ~ENs”R I
@_ 12, ,~,
1RELAY 1
e
~‘“;liiilp ‘;Z“;
I.-, . I
I●-.
31, IL————- .— .————— J
.-— ——- J❑20KVD:
I/FUSE DIODE
CONNECTOR 1 10 ‘“M N“ 4.2KVDC
S102 FA la
IDOOR
.—— 1SENSING ———
I●
E
BL SWITCH
I ; @@F 20Kvfi ~2: !
I , l_– __
m
❑
1c+
DIODE ‘———A
I,CONNECTOR CA[/V#J:~
Slol
●TOUCH MAGNETRON RESISTOR
KEY 10 MEO-OHM 2.5 KVAC
———
ISTEP bOWN CIRCUIT BOARD
l~RANSFORMER BOARD
———— ————— —————
3K
‘“M
@
iNO
BK
—— I
I
IBK
Figure 1
NOTES :❑
THESIGN ~Parts marked with this sign are supplied with
High Voltage exceeding 250V.
WIRING COLOUR
BK :BLACK
BR :BROWN
BL :BLUE
W:WHITE
Parts marked with this sign have special
o0:ORANGE
THE SIGN ~“ characteristics important for microwave R:RED
leakage. When replacing any of these parts *Connector “S201” Humidity Sensor
use only manufacturer’s specified parts. for Model EM-X491S

4. TEST PROCEDURES
4
.-
W
w
d’
–3-

‘i-
“i-
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-4-

5. EXPLODED VIEW AND PART LIST
CAVITY PARTS
***
‘Y-%T2
[
25- 26 Y‘“w
19
17 20 lfl ‘p &
“\ ‘%/!
“5
—/
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 Pari No.
do. Description Q’ty.
16172149172 Cabinet (Also order Circuit Diagram 1
-when replacing Cabinet)
24110825201 SCR TPG TRS 4X10 Z1 8
3 411 1606007 SCR TPG TRS +SRT 4X10 Z1 4
46172250724 Power Cord 1
5
66172049366 Oven Cavity”” (Not Service Part) 1
7 617151 2458 Gear Motor 1
8 4110105808 SCR EVR PAN 4X10 Z1 2
96171385601 Bottom Plate’* *(Not Service Part) 1
10 617221 6089 Plastic Foot with Canoe Clip 4
11 411 011 0802 Bolt Hex+ SW+ W5x14Zl*”” 2
12 6171806137 Hinge Lower’** 1
13 4110892500 Washer F5 x10 x0.8 1
(ey
Jo. Part No. Description Q’ty.
14 6171208481 Insulation Sheet 1
15 6171444476 Turn Table Shaft 1
16 6172049489 Roller 1
17 6170735889 Rotating Tray 1
18 6172049403 Antenna Complete 1
19 6171621938 Cavity Cover 1
20 4110691707 SCR TPG TRS 4X6DA 1
21 4110066604 SCR TPG PAN 3X6Z1 2
22 6172000381 Thermal Fuse, 167°C 1
23 6170805315 Special Washer 1
24 411 1606106 SCR S-T TRS +SRT 4X10 Z1 2
25 6171985580 Sensor Assy (EM-X491 S) 1
26 6171985542 Duct, Sensor Assy (EM-X491 S)
5

SWITCHES AND MICROWAVE PARTS
.
\* I
!EiEHql~%llll’l,’,l’’’’l,,’,,
C.” \
,. 2***
.FMn-iz,
%
/9
El
-‘Aw
~:o,tageexcee
‘~~-’”
Parts marked with this sign are supphed with
—
oParts 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
Jo. Part No. Description Q’ty.
1 411 0825201 SCR TPG TRS 4X10 Z1 8
26172080260 H.V.Transformer, ”*’YS-X670SAP 1
3 6171998283 Stay, Cavity &Magnetron 1
4 4110066604 SCR TPG PAN 3X6Z1 1
5 6171241235 Thermostat, Magnetron 122°C 1
6 4150026101 Magnetron, 2M219H(B)A-’” 1
7 4230227503 Fuse, 250V 8A 1
8 6172133416 PCB, Noise Filter 1
9 6172258553 Lead Wire Ass)y, with Diode 1
10 6171621990 Space Partition (Blower) 1
11 6172129013 H.V.Capacitor including Resistor, 1
1.lOuf 2.5 KV.
12 6171822373 Capacitor Band 1
13 4110115609 Bolt Hex 4x10 Z1 4
14 6171984996 Duct, Magnetron Exhaust 1
15 6171103618 Lamp, 240V 2WV 1
16 6171241280 Lamp Socket 1
17 6171670592 Blower Motor 1
18 4110825201 SCR TPG TRS 4X10 Z1 2
:ey
Jo. Part No. Description Q’ty.
19 6171968507 Blower Fan 1
20 6171241181 Latch Lever **’ 1
21 6172214078 Micro Switch, Primary Interlock 1
AM51630C53F2””*
22 617221 4061 Micro Switch, Interlock Monitor 1
AM50620C53***
23 6172214078 Micro Switch, Door Sensing 1
AM51630C53F2***
24
25 6171241174 Lever Stopper “’* 1
26 411 1025907 SCR ETG TRS 4X10 N2 2
27
28 6171173505 Harness (Door Sensing) 1
29 6171243796 Lead Wire Ass’y 1
30
31 4110014704 SCR S-T PAN 4X10 Z1 1
32
33 411 1606106 SCR S-T TRS +SRT 4X10 Z1 1
-6-

DOOR PARTS
***
1***
\,
/3*A-*
T/7***
/
\
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.
No. Description Q’ty.
1
1
2
2
3
6172076294
6172128368
6172076300
6171814170
6171992434
Door Cover “’(EM-X491 S) 1
Door Cover *“(EM-X411 S) 1
Door Panel **”(EM-X491S) 1
Door Panel ‘“’(EM-X411 S) 1
Door Main Frame’” (Also order 1
-Door Sheet when replacing
-Door Main Frame)
,**
‘ey Part No.
No. Description Q’ty.
4
5
6
7
8
9
10
6171240948
6171240931
4110541903
6171806151
4110110802
617101 1494
6171792478
Choke Dielectric”*
Door Sheet
Nut Hex +Flg W/SRT 5“”’
Hinge, Upper***
Bolt Hex +SW +W5x14***
Spring ‘“
Door Latch ‘*’ T
1
1
2
1
2
1
1
7-

CONTROL PANEL PARTS
6***
.
***
1
2
2
1***
\
3***
‘x
2***
\
b
d
4;** ./b
f5!!!!7
---.,
m./@”;’
\8***
I;
9***
0
ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN
USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE
PARTS IDENTIFIED BYA TRIPLE ASTERISK (M).
Part No. Description
6172258546 Control Sheet”’’(EM-X491 S)
I(Also order Touch Key Board when
replacing Control Sheet)
6172259666 Control Shee~*’(EM-X411S)
(Also order Touch Key Board when
replacing Control Sheet)
6172258034 Touch Key Board’” (EM-X491 S)
(Also order Control Sheet when
~
(Also order Control Sheet when
PRINTED MATTER (Items Not Illustrated)
Part No.
6171987324
6172129006
6172254258
6172254289
Description
Cook Book
Circuit Diagram
Operating Instructions (EM-X491 S)
Operating Instructions (EM-X41 1S)
2’ty.
1
L
1
1
1
ley
~
3
3
4
4
5
6
6
7
8
9
9
Part No.
6172076317
6171795981
6172070377
6171514377
411 1606205
6172227092
6172226972
4111295805
6170809559
6172070353
6171795929
—
‘“y IIRTT==_
II!!E
-8-
Description
Control Frame’” (EM-X491 S)
Control Frame’*’ (EM-X41 1)
Control Base’** (EM-X491 S)
Control Base’” (EM-X41 1)
SCR TPG TRS +SRT 4X10 Z1
Power&Catrd Chit BoaIW”(EfvlX481S]
PcWer&Ccxmc4Cirmit E!cOKtqEM-x411s)
SCR TPG BIN 3X10 Z1
Spring,DoorReleaseLever’*”
DoorReleaseLever**’(EM-X491S)
Door Release Lever’** (EM-X411 S)
Q’ty.
1
1
1
1
1
1
1
2
1
1
1
Description Q’ty.
Carton Box Comp.(EM-X491 S) 1
Carton Box Comp.((EM-X411S) 1
Name Plate (EM-X491 S) 1
Name Plate (EM-X41 1S) 1

CONTROL CIRCUIT BOARD
(Part NO. 617222 7092)
EM-X491 s)
14V-O “
-_-J &J~ o\./- ‘I l.-=
[J9) I I
o— 0
S11–”—”7 o
z
TP-I
TP-2
TP-4
~TP-3
—GROUND TP-7
TP-8
TP-6
TP-5
—
-9-