Read thie manual carefully, especiallyprecautionon microwaveenergy, and follow the procedurestrictly.
L
Careless servicingand testing may expose yourselfto the microwaveenergy leakage.
PRECAUTIONS
PRECAUTIONSTO 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.
Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave
(b)
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.
(c)
Before turning on microwave power for any service test or inspection within the microwave generating compatiments,
check the magnetron, wave guide or transmissionline, 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.
except the items described in this Service Manual.
Set cooking time to two (2) minutes. (“2 00 appears
1
in display)
Touch START key and operate oven for exactly two
2.
(2) minutes.
Take out the two bowls at once.
1,
Stir both water with thermometer and measure the
2.
water temperature rise respectively.
1.
Get temperaturerise by calculation the difference
(water temperature after cooking minus initial
temperature) in each bowl.
Then calculate average value(t) of both temperature
2.
rise in degrees centigrade.
Then work out;
3.
Power Output (watt) = 70 x At
Where At is an Average Temperature Rise in degrees
centigrade.
Power Output shall be in the following range:
AverageMicrowave
Temperature RisePower Output
w
d
Effective Capacity of
Oven Cavity . . . . . . . . . . . . . .
Net Weight . . . . . . . . . . . . . . .
28 liters.
Approx. 17 Kg.
2.POWER OUTPUTMEASUREMENT
NOTE
The Power Output specification
measured with IEC measurement.
measured with two (2) liters water is equivalent to 1000W in
measurementwith IEC, when measured with the following
power output.
(A)1. Fill two test bowls with each 1 liter water respectively.
2. Use accurate thermometerand measure each
water temperaturerespectively.
(B)Place the two bowls on glass turntable.
1000W on this model is
The Power Output is
–l-
Minimum
.2°C
11
777 w
Maximum
13.PC
Power Output will be influenced by line voltage of
(G)
power supply.Consequently, correct power output
must be measured within 240V AC ~ 2 volt while unit
is operating.
966 W
Page 3
3.CIRCUITDIAGRAM
‘“WERC”;DI~ iOwERcORD
I
I
I
WI
-——————___
Cl = 0.22LJF
I
‘1 = lMn
Ll, L2= 6501JH
1 C2, C3 = 4700PF
I
F
I
CAVITY TEMP FUSE
OPENS AT 167 *g°C
BL
n
3K
I
MAGNETRON
THERMAL PROTECTOR
OPENS AT 122*5”’ WILL
CLOSE AT 30”C
i
OR LOWER
i+74’
w
Y
——————..
r
CONNECTOR1 REUY2I
I yS1
+ ~
I 3
1
I
I
~ ‘ “;liiilp‘ ;Z “;
I
I;
I,
I STEP bOWN
l~RANSFORMER
L!,
@_12,,~,
RELAY 1
CONNECTOR
.——
●
E
I,
●
1c+
———
——————————————
———
S102
1
w
e
1 10‘“MN“
CONNECTOR
CIRCUIT
BOARD
w
w
INTERLOCK MONITOR
SWITCH
NC&COM
my
.=’-------------
w
“CONNECTOR
Is201r_ _ __~ENs”R
I .-,
I ●-.
31,
.-—— —- J
/
BL
l_–__
Slol
m
HUMIDITY ~~
I
DOOR
SENSING
SWITCH
@@F20Kvfi~2:!
TOUCH
BOARD
I
Figure 1
NOTES :
Parts
THESIGN~
THE SIGN~“
❑
o
marked with this sign are supplied with
High Voltage exceeding 250V.
Parts marked with this sign have special
characteristicsimportant for microwave
leakage. When replacing any of these parts
use only manufacturer’sspecified parts.
CAVITY LIGHT
INTERLOCK SWITCH
Y
HIGH VOLTAGE TRANSFORMER
I
I
L————-.— .—————
4.2KVDC
FA
❑
BK
MAGNETRON
*
Connector “S201” HumiditySensor
for Model EM-X491S
KEY
BK
PRIMARY
●
❑ 20KVD:
FUSE DIODE
la
———
DIODE‘———A
RESISTOR
10 MEO-OHM
WIRINGCOLOUR
CA[/V#J:~
2.5 KVAC
BK : BLACK
BR : BROWN
BL : BLUE
W: WHITE
0
:
ORANGE
R: RED
‘“M
@
i NO
BK
——
.I
I
I
J
Page 4
4. TEST PROCEDURES
4
.-
W
w
–3-
d’
Page 5
‘i-
“i-
L
-4-
Page 6
5. EXPLODEDVIEW AND PART LIST
CAVITY PARTS
‘Y-%T2
25-
26Y‘“w
***
17
[
20
19
lfl‘p&
“\‘%/!
“5
—
ALL SERVICE ON MICROWAVEOVENS SHOULD BE PERFORMEDBY A QUALIFIEDTECHNICIAN
USING APPROVEDTESTING EQUIPMENT.CUSTOMERSSHOULD NOT ATTEMPT TO REPLACE
PARTS IDENTIFIEDBY A TRIPLE ASTERISK(***).
314110014704SCR S-T PAN 4 X 10 Z1
32
33411 1606106SCR S-T TRS + SRT 4
X 10 Z1
-6-
Q’ty.
1
1
1
2
1
1
1
1
Page 8
DOOR PARTS
1 ***
\,
T
/3*A-*
/
7***
/
***
\
,**
ALL SERVICE ON MICROWAVEOVENS SHOULD BE PERFORMEDBY A QUALIFIEDTECHNICIAN
USING APPROVEDTESTINGEQUIPMENT.CUSTOMERSSHOULD NOT ATTEMPT TO REPLACE
PARTS IDENTIFIEDBY A TRIPLE ASTERISK(,,,).
‘ey Part No.
No.
6172076294
1
1
6172128368
2
6172076300
6171814170
2
6171992434
3
Description
Door Cover “’(EM-X491S)1
Door Cover *“(EM-X411 S)1
Door Panel **”(EM-X491S)1
Door Panel ‘“’(EM-X411 S)1
Door Main Frame’”(Also order1
-Door Sheet when replacing
-Door Main Frame)
Q’ty.
‘ey Part No.
No.
4
6171240948
5
6171240931
6
4110541903
7
6171806151
4110110802
8
9
617101 1494
10
6171792478
7-
Description
Choke Dielectric”*
Door Sheet
Nut Hex + Flg W/SRT 5“”’
Hinge, Upper***
Bolt Hex + SW + W 5 x 14***
Spring ‘“
Door Latch ‘*’
Q’ty.
1
1
2
1
2
1
1
T
Page 9
CONTROL PANEL PARTS
1***
4;**
3***
‘x
2 ***
\
\
b
0
d
./b
6 ***
---.,
m ./@”;’
\
8***
f5!!!!7
I
9***
;
***
.
PRINTEDMATTER(Items Not Illustrated)
ALL SERVICE ON MICROWAVEOVENS SHOULD BE PERFORMEDBY A QUALIFIEDTECHNICIAN
USING APPROVEDTESTING EQUIPMENT.CUSTOMERSSHOULD NOT ATTEMPT TO REPLACE
PARTS IDENTIFIEDBYA TRIPLE ASTERISK(M).