Sanyo EM-X680S User manual

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SUPPLEMENTOF
SERVICE MANUAL Microwave Oven
k
FILE NO.
~M-x680s (New Zealand)
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Product Code No. 43731476
See the service manual of EM-N102WS(SM-860078)
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.
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 transmis-
sion systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is
released to the owner.
I
REFERENCE NO. SS-860129

—TABLE OF CONTENTS —
Specifications .....................................1 Test Procedures ..................................... 3
Power Output Measurement ..........................1 Disassembly Instructions ...............................4
Circuit Diagram ....................................2 Exploded View and Parts List.. . . . . . . . . . . . . . . . . . . ...5-10
Overall Circuit Diagram ..............................11
1. SPECIFICATIONS
Rated Power Consumption .... 1370W.
Microwave Output 900W.
Frequency . .. .. . .. . 2,450 MHz+50MHz.
Power Supply 230V–240V,50HZ.
Rated Current ... . .. .. 6.OAmp.
Safety Devices Thermal Protector, 0penat122°C
for Cavity.
Thermal Protector, Open at122°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 550( W)x451(D) x311( H) mm.
Oven Cavity Size .................. 375(W) x404(D) x230(H) mm.
Turntable Diameter .............. 360mm.
Effective Capacity of
Oven Cavity 341iters.
Net Weight ............................ Approx.20 Kg.
2. POWER OUTPUT MEASUREMENT
NOTE
The power output specification, 900W on this model is measured
with lEC measurement. The power output is measured with two(2)
liters water isequivalentto900W inmeasurement 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.
(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 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 work out;
Power Output (watt) =70 x At
Power output shall bein the following range:
Average Microwave
temperature rise Power output
Minimum
10.4”C 728W
Maximum 931W
13.3°C
Power Output will be influenced by line voltage of power
supply. Consequently, correct power output must be
measured within 240 VAC+2 volts while unit is operating.
(B) Place thetwobowls on glass turntable
–l–

3. CIRCUIT DIAGRAM
@
POWER..:.!1
L
l_-
POWER CORD
1‘.
GROUND
$2
‘NE3 ‘L’
8A
cl
Irr
l“J-
C2 I–1 C3
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I
I
I
I
CAVITY
THERMAL PROTECTOR
OPENS AT 122*5JC
I
w
MAGNETRON
J
THERMAL PROTECTOR
OPENS AT 122f5”C W
LBK COM
IINTERLOCK MONITOR -‘RIMARY
.\
{07
wIIN Icri LOCK SWITCH @
NC COM YNO
w
7
\
Y
IBLOWER MOTOR Iy
FqY
wGEAR MOTOR
o+
JIHUMIDITY
SEN~OR HIGH VOLTAGE TRANSFORMER
~a -~
\p-!
●
1CONNE&OR
—
L
I
I I
lC?l I—.
‘- 11
❑“
FUSE DIODE
4
1
ISTEP DOWN
4KVDC w
❑
R
20 KVDC
•~~
DIODE _l [
~
CIRCUIT
BOARD
+CONNECTOR
Slol
I
E=
TOUCH
KEY
BOARD 775-
MAGNETRON
L—. BK
WIRING COLOUR
BK BLACK
OOUANGE
BL BLUE
WWHITE
YYELLOW
RRED
Parts marked wlfh this s!gn are supplled with
h(ghvoltage exceeding 250V
Parts marked with this s!gn have special
Figure 1SECONDARYINTERLOCK
PRIMARY INTERLOCK DOOR
SWITCH MADE.INTERLOCK MONITOR SENSING RELAY2
SWITCH SWITCH SWITCH
CONDITION COM COM COM COM
NO NC NO NO
DOOROPEN ●❑
DOOR CLOSE .●.@
—
character!stlcs Importantfor microwaveleakage
When replaclng any of these parts use only
manufacturers spec(fled part.
–2–

4. TEST PROCEDURES
—
–3–

IL
L
B.
L
L
REMOVING BLOWER MOTOR
(Figures 3(Top View) and 4)
(1)
(2)
(3)
(4)
Remove screw securing the stay.
Disconnect all lead wires from the blower motor
and H.V. capacitor,
Remove 2screws securing the blower base and
disengage 3hooks from the rear plate of cavity
(Figure 4)
Remove 1screw securing the blower motor with
the blower base
REMOVING MAGNETRON
(Figure 3(Top View))
After removing the blower motor:
(1) Remove duct (msg. intake) and duct (msg.
exhaust).
(2) Remove 1screw securing the thermal protector.
(3) Disconnect 2lead wires from the magnetron.
(4) Remove 4screws 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 aproper 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 abox
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 aleakage detector
and confirm the leakage is below 5mW/cmz.
NOTES
When inserting duct (mag, 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
j~
Thermal protector
\
Screw
/ \ 1
J
Rti2ii/ td+ ‘
St:y Duct (msg. Intake)
Figure 3(TOPView)
Duct
(msg. exhaust)
Screws
Figure 4
Screws Upper Hook
~si>etr””
1= ~......:l I IllIll II
\I*I) -w...9
bP
4’--’1 I II r‘
1,- I* III
w“””””””’
!Jf3
+
‘1
Lower Tab
Overlap onto
magnetron
Figure 5
–4–

6. EXPLODED VIEW AND PART LIST
CAVITY PARTS ‘e’
/
&Id\ .$3. --v/ ‘9 ‘.** 3
11 ‘** pr
-.;,........;.
..:.....$.
Q-lo
*** 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
Uo.
16171862089 Cabinet (Also order Circuit Diagram 1
when replacing Cabinet).
24110825201 SCR TPG TRS 4XI0 Z1 8
3411 1606007 SCR TPG TRS +SRT 4X10mm 4
4 6171385113 Power Cord 1
5
66171888089 Over Cavity ‘“ (Not Service Part) 1
7 6171512458 Gear Motor 1
84110105808 SCR EVR PAN 4XI0 Z1 2
96171815986 Bottom Plate ““”(Not Serwce Part) 1
10 6171445435 Plastic Foot with Canoe ClIp 4
11 4110110802 Bolt Hex+SW+W 5x14 ‘“ 2
12 6171240795 Hinge, Lower ““ 1
13 4110892500 Washer F5x1OXO.8 1
(ey
tie.
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Part No.
6171208481
6171444476
6171872026
6171893816
6171812503
6171621938
4110691707
4110076900
6171241235
6170805315
411 1606106
6171473865
6171756203
6171281149
Description
Insulation Sheet
Turn Table Shaft
Roller
Rotating Tray
Antenna Complete
Cavity Cover
SCR TPG TRS 4X6 DA
SCR TPG PAN 3X6 ZI
Thermostat, Cavity 122°C
Special Washer
SCR S-T PAN 4X1O ZI
Humidity Sensor
Special Washer
Duct, Humidity Sensor
Q’ty
1
1
1
1
1
1
1
2
1
1
2
1
1
1
-5-

SWITCHES AND MICROWAVE PARTS 1
~fl~ “M.,
,.
L
L
HParts marked with this sign are supplied with
high voltage exceeding 250V.
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
Vo.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
‘6L
Part No.
4110825201
6171685657
6171621945
4110076900
6171241235
4150026002
4230227503
6171850024
6171805741
6171821990
6171857559
6171822373
4110115609
6171812534
6171103618
6171241280
Y!!!!ll
Description
SCR TPG TRS 4XI0 Z1
HV.Transformer, N5T-S829MP”
Stay, Cavity &Magnetron
SCR TPG PAN 3X6 Z1
Thermostat, Magnetron, 122°C
Magnetron, 2M218H(N) A““
Fuse, 250V 8A
PCB Complete
Lead Wire Ass’y (including Diode)
Space Partition (Blower)
High Voltage Capacitor Including
Resistor, 1.1OMF 2.1 KV
Capactor Band
Bolt Hex 4x1O Z1
Duct, Msg. Exhaust
Lamp, 240V 25W
Lamp Socket
3Washer F5x1OXO.8
Q’ty
8
1
1
1
1
1
1
1
1
1
1
1
4
1
1
iJ
<ey
No.
18
19
20
21
22
23
24
25
26
27
28
29
30
31
“L
Part No.
4110825201
6171968507
6171241181
6171524741
6170045575
6171524741
6171241174
411 1025907
6171173505
6171405354
6171325713
4110014704
~
Description
SCR TPG TRS 4XI0 Z1
Blower Fan
Latch Lever’”
Micro Switch, Primary Interlock
V-5930 D””
Micro Switch, Interlock Momtor
V-5220D~”
Micro Switch, Door Sensing
V-5930 D””
Lever Stopper’”
SCR ETG TRS 4X1O N2
Harness, Door Sensing
Lead W[re Ass’y
Insulation Sheet
SCR S-T PAN 4X1O Z1
3UUC[, nU1lllUlly X11>(JI
>’ty
2
1
1
1
1
1
1
2
1
1
1
L-4
–5–

DOOR PARTS
/8***
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.
6171956528
6171956542
6171385908
6171520958
6171950298
4110541903
Description
Door Cover ‘“
Door Panel ‘“
Door Main Frame ‘“ (Also order Door
Sheet when replaclng Door Main Frame)
Choke Dielectric ‘“
Door Sheet
Nut Hex +Flg W/SRT 5‘“
Q’ty
1
1
1
1
1
2
[eyPart No. Description Q’ty
~o.
7 6171240955 Hinge, Upper ‘“ 1
84110110802 Bolt Hex +SW +W5X14 ‘“ 2
9617101 1494 Spring ‘“” 1
10 6171792478 Door Latch ‘“’ 1
–7–

CONTROL PANEL PARTS 6
3\
\- 5*** \7***
,/
I
$’/
1●**
\
10 ***
“’’”u ‘9 ***
*** 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 (***)
:eyPart No. Description Q’ty
Jo.
7 6171837698 Control Circuit Board Complete ‘“ 1
8411 1295805 SCR TPG BIN 3X1O Z1 2
96170809559 Spring, Door Release Lever ‘“ 1
10 6171514339 Door Release Lever ‘“ 1
Key
No.
1
2
3
4
5
6
Part No.
6171937039
6171866803
6171514346
6171521030
6171514377
411 1606205
Description Q’ty
Control Sheet ““”(Also order Touch Key
Board when replaclng Control Sheet)
Touch Key Board ““” (Also order Control
Sheet when replacing Touch Key Board)
Control Plate
Control Frame ‘++
Control Base ‘“”
SCR TPG TRS+SRT 4X1O Z1
1
1
1
1
1
1
PRINTED MATTER (Items Not Illustrated)
Cey
No. Part No. Description
Cook Book
Operating Instructions
Carton Box
Name Plate
C!rcuit Diagram
Q’ty
6171987324
6171937558
6171937190
6172000930
6171891850
1
1
1
1
1
–8-

CONTROL CIRCUIT BOARD
(Part No. 617183 7698)
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Icll $- ;&
CJ
’264“3 no
125+
.- fi
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\$
“-A-
-41
WrrFii
IV c-
—TP-8
—TP-7
—TP-2
—TP-1
—TP-4
—TP-3
—TP-5
—TP-6
–9–