Daewoo KOD-135P9S Service manual

S/M No. : D135P9S001
Service Manual
Pizza Baker Built-in
Microwaves Combo
Model: KOD-135P9S
✔ Caution
: In this Manual, some parts can be changed for improving,
their performance without notice in the parts list. So, if you
need the latest parts information, please refer to PPL(Parts
Price List) in Service Information Center
Sep. 2005
PRECAUTIONS TO 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.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs if 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 power to the microwave oven 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 transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual
before the oven is released to the owner.
(e) A microwave leakage check to verify compliance with the Federal performance standard should be
performed on each oven prior to release to the owner.
TABLE OF CONTENTS
SAFETY AND PRECAUTIONS ...........................................................................................................................................3
FOR SAFE OPERATION ......................................................................................................................................3
FOR SAFE SERVICE PROCEDURES .................................................................................................................3
SPECIFICATIONS ...............................................................................................................................................................4
EXTERNAL VIEW................................................................................................................................................................4
OUTER DIMENSION.............................................................................................................................................4
FEATURE DIAGRAM ............................................................................................................................................5
CONTROL PANEL ................................................................................................................................................6
INSTALLATION ...................................................................................................................................................................7
OPERATION PROCEDURE(MICROWAVE OVEN)............................................................................................................8
OPERATION PROCEDURE(PIZZA OVEN) ........................................................................................................................9
IMPORTANT ........................................................................................................................................................................9
CLEANING THE PIZZA OVEN............................................................................................................................................9
HANDLE CONTROLS .......................................................................................................................................................10
ABNORMAL MESSAGE ...................................................................................................................................................10
DISASSEMBLY AND ASSMBLY ......................................................................................................................................11
INTERLOCK MECHANISM AND ADJUSTMENT.............................................................................................................18
TROUBLE SHOOTING GUIDE .........................................................................................................................................19
MESUREMENT AND TEST...............................................................................................................................................24
MEASUREMENT OF THE MICROWAVE POWER OUTPUT ............................................................................24
MICROWAVE RADIATION TEST .......................................................................................................................25
COMPONENT TEST PROCEDURE ...................................................................................................................26
WIRING DIAGRAM............................................................................................................................................................27
PRINTED CIRCUIT BOARD..............................................................................................................................................28
CIRCUIT CHECK PROCEDURE ........................................................................................................................28
PCB CIRCUIT DIAGRAM....................................................................................................................................31
P.C.B. LOCATION NO ........................................................................................................................................32
EXPLODED VIEW AND PARTS LIST...............................................................................................................................33
DOOR ASSEMBLY .............................................................................................................................................33
CONTROL PANEL ASSEMBLY..........................................................................................................................33
TOTAL ASSEMBLY.............................................................................................................................................33
PIZZA OVEN ASSEMBLY...................................................................................................................................35
2
SAFETY AND PRECAUTIONS
CAUTION
This Device is to be Serviced only by Properly Qualified Service Personnel. Consult the Service Manual for
Proper Service Procedures to Assure Continued Safety Operation and for Precautions to be Taken to Avoid
Possible Exposure to Excessive Microwave Energy.
1. FOR SAFE OPERATION
Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking and may
cause serious bodily injury to the operator.
IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE.
(Only a trained service personnel should make repairs.)
(1) A broken door hinge.
(2) A broken door viewing screen.
(3) A broken front panel, oven cavity.
(4) A loosened door lock.
(5) A broken door lock.
The door gasket plate and oven cavity surface should be kept clean.
No grease, soil or spatter should be allowed to build up on these surfaces or inside the oven.
DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN.
The microwave oven has concealed switches to make sure the power is turned off when the door is opened.
Do not attempt to defeat them.
DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.
2. FOR SAFE SERVICE PROCEDURES
1. If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing the
oven.
2. If any certified oven unit is found to have excessive emission level 5mw/cm2, the service person should:
(a) inform the manufacturer, importer or assembler,
(b) repair the unit at no cost to the owner,
(c) attempt to ascertain the cause of the excessive leakage,
(d) tell the owner of the unit not to use the unit until the oven has been brought into compliance.
3. If the oven operates with the door open, the service person should tell the user not to operate the oven and contact
the manufacturer and CDRH immediately.
IMPORTANT :
The wire in this main lead coloured in accordance with the following code.
Green-and-yellow : Earth
Blue
: Neutral
Brown
: Live
As the colours of the wires in the main lead of this appliance may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows.
The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked with
the letter ‘E’, earth symbol or coloured green-and-yellow.
The wire which is coloured blue must be connected to the terminal which is marked with the letter ‘N’ or coloured
black.
The wire which is coloured brown must be connected to the terminal which is marked the letter ‘L’ or coloured
red.
NOTE : This oven is designed for counter-top use only.
3
SPECIFICATIONS
POWER SUPPLY
230V AC 50 Hz SINGLE PHASE WITH EARTHING
POWER CONSUMPTION
1.4 KW
OUTPUT POWER
1000 W
MICROWAVE
FREQUENCY
OVEN
TIMER
2450 MHz
59 min. 99 sec.
POWER LEVELS
10 LEVELS
CAVITY DIMENSIONS
380 X 246 X 386 mm (14.9 X 9.7 X 15.2 inch)
CAVITY VOLUME
1.3 Cu.ft
POWER CONSUMPTION
1.45 KW
MICROWAVE + PIZZA POWER CONSUMPTION
2850 W
PIZZA OVEN
OUTSIDE DIMENSIONS (WXHXD)
563 X 450 X 441 mm (22.2 X 17.7 X 17.4 inch)
NET WEIGHT
APPROX. 19.8 Kg (43.7 lbs)
* Specifications are subject to change without notice.
EXTERNAL VIEW
1. OUTER DIMENSION
4
2. FEATURE DIAGRAM
1. Door latch
When the door is closed it will automatically shut off. If the door is opened while the oven is operating, the magnetron will
automatically shut off.
2. Door seal
The door seal maintains the microwave within the oven cavity and prevents microwave leakage.
3. Oven cavity
4. Spatter shield
Protects the microwave outlet from splashes of cooking foods.
5. Safety interlock system
Prevents the oven from operating while the door is opened.
The oven will only operate with the door fully closed. When the door is open, the oven turns off and will only start again
after the door is closed.
6. Door release button
Pushing this button stops oven operation and opens the door.
7. Glass cooking tray
Made of special heat resistant glass. The tray must always be in proper position before operating.
Do not cook food directly on the tray.
8. Roller guide
Supports the glass cooking tray.
9. Door screen
Allows viewing of food.
The screen is designed so that light can pass through, but not the microwaves.
10. Pizza tray
5
3. CONTROL PANEL
Control pads
for pizza oven
Control pads
for
microwave oven
11. Time set pad-Used to set the cooking time and the present time.
12. Display-Cooking time, power level, indicators and present time are displayed.
13. Fresh Pizza-Used to cook Fresh Pizza.
14. Frozen Pizza-Used to cook Frozen Pizza.
15. Manual Cook-Used to cook Manual Cook.
16. Pizza Pause/Cancel-Used to stop Pizza oven operation or to delete the cooking data.
17. Pizza Start-Used to start the Pizza Oven.
18. Power Level-Used to set power level.
19. Auto Defrost-Used to defrost foods.(for weight or time)
10. Auto Reheat-Used to reheat foods.
11. Handy Helper, Kids Meal, Baby Food, Snack Cook-Used to select type of dish to be reheated.
12. One touch Cook-Used to cook or reheat specific quantities of food.
13. Quick Defrost-Used to defrost foods.(for weight only)
14. Clock-Used to set clock.
15. Kitchen Timer-Used as a minute timer.
16. More-Used to add time to cooking.
17. Less-Used to remove time from cooking.
18. Pause/Cancel-Used to stop the microwave oven operation or to delete the cooking data.
19. Start/Express cook-Used to start the Microwave oven and also used to set a reheat time.
6
INSTALLATION
1. Steady, flat location
This microwave oven should be set on a steady, flat surface.
This microwave oven is designed for counter top use only.
2. Leave space behind and side
All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and, eventually,
cause oven failure. Position the oven as far from them as passible.
3. Away from Radio and TV sets
Poor television reception and radio interference may result if the oven is located close to a TV, radio, antenna, or feeder
and so on.
4. Away from heating appliances and water taps
Keep the oven away from hot air, steam or splash when choosing a place to position it, or the insulation might be
adversely affected and breakdowns occur.
5. Power supply
➢ Check your local power source.
➢ This Pizza baker built-in microwaves combo requires a current of approximately 15 amperes, 230Volts, 50Hz grounded
outlet.
Power supply cord is about 0.8 meters long.
➢ The voltage used must be the same as specified on this oven. Using a higher voltage may result in a fire or other
accident causing oven damage. Using low voltage will cause slow cooking. We are not responsible for damage resulting
from use of this oven with a voltage of ampere fuse other than those specified.
➢ This appliance is supplied with cable of special type, which, if damaged, must be repaired with cable of same type.
Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person.
6. Examine the oven after unpacking for any damage such as:
A misaligned door, broken door or a dent in cavity.
If any of the above are visible, DO NOT INSTALL, and notify dealer immediately.
7. Do not operate the oven if it is colder than room temperature
(This may occur during delivery in cold weather.) Allow oven to become room temperature before operating.
EARTHING INSTRUCTIONS
This appliance must be earthed. In the event of an electrical short circuit, earthing reduces the risk of the electric
shock by providing an escape wire for the electric current. This appliance is equipped with a cord having a earthing
wire with a earting plug. The plug must be plugged into an outlet that is properly installed and earthed.
WARNING : Improper use of the earthing plug can result in a risk of electric shock. Consult a qualified
electrician or serviceman if the earthing instructions are not completely understood, or if
doubt exists as to whether the appliance is properly earthed, and either : If it is necessary to
use an extension cord, use only a 3-wire extension cord that has a 3-blade earthing plug, and
a 3-slot receptacle that will accept the plug on the appliance. The marked rating of the
extension cord should be equal to or greater than the electrical rating of the appliance, or Do
not use an extension cord.
7
OPERATION PROCEDURE(MICROWAVE OVEN)
This section includes useful information about microwave oven operation.
1. Plug power supply cord into a standard 3- pronged 15Amp, 230V AC 50Hz power outlet.
2. After placing the food in a suitable container, open the oven door and put it on the glass tray.
The glass tray and roller guide must always be in place during cooking.
3. Shut the door. Make sure that it is firmly closed.
oven light is on when the microwave oven is
1 The
operating.
the MWO PAUSE/CANCEL pad is touched during the
7 When
oven operation, the oven stops cooking and all information
retained.
To erase all information (except the present time), touch the
MWO PAUSE/CANCEL pad once more. If the oven door is
opened during the oven operation, all information is retained.
oven door can be opened at any time during
2 The
operation by pressing the door release button on the
control panel. The oven will automatically shut off.
time a pad is touched, a BEEP will sound to
3 Each
acknowledge the touch.
When the oven is not in operation, touching MWO
pads will show MWO display and touching pizza pads
will show pizza display. When the pizza oven is
working, touching MWO PAUSE/CANCEL pad can’t
stop pizza cooking.
oven automatically cooks on full power unless set
4 The
to a lower power level.
5 The display will show ":0" when the oven is plugged in.
clock returns to the present time when the
6 Time
cooking time ends.
the START/EXPRESS COOK pad is touched and the
8 Ifoven
does not operate, check the area between the door
and door seal for obstructions and make sure the door is
closed securely.
The oven will not start cooking until the door is completely
closed or the program has been reset.
Make sure the oven is properly installed and plugged
into the electrical outlet.
WATTAGE OUTPUT CHART
• The power-level is set by touching the POWER LEVEL pad. The chart shows the display, the power level and the
percentage of power.
Touch POWER pad
Power Level (Display)
Approximate Percentage of Power
once
P-HI
100%
twice
P-90
90%
3 times
P-80
80%
4 times
P-70
70%
5 times
P-60
60%
6 times
P-50
50%
7 times
P-40
40%
8 times
P-30
30%
9 times
P-20
20%
10 times
P-10
10%
11 times
P-00
0%
8
OPERATION PROCEDURE(PIZZA OVEN)
This section includes useful information about pizza oven operation.
1. Plug power supply cord into a standard 3-pronged 15Amp, 230V AC 50Hz power output.
2. Put pizza on the pizza tray.
3. Shut the pizza tray. Make sure that it is firmly closed.
pizza tray can be opened at any time during operation by pulling out the handle on the pizza tray. The pizza oven will
1 The
automatically shut off.
2 Touch the pizza menu pad and the symbol of menu will be displayed.
3 Each time a pad is touched, a BEEP sounds to acknowledge the touch.
the cooking time and touch pizza start pad and then the pizza indicator linghts and the cooking time is displayed
4 Enter
and then pizza cooking starts. During the pizza cooking, hot smoke or air may goes out from the gap of the pizza tray.
the pizza PAUSE/CANCEL pad is touched during the oven operation, the pizza stops cooking and all information
5 When
retained. To erase all information(except the present time), touch the PAUSE/CANCEL pad once more. If the pizza tray
is opened during the pizza operation, all information is retained.
When the microwave oven is working, touching pizza PAUSE/CANCEL pad can’t stop MWO cooking.
the pizza START pad is touched and the pizza does not operate, check the pizza tray is closed securely. The pizza
6 Ifoven
will not start cooking until the pizza tray is completely closed or the program has been reset.
NOTE :
When the pizza tray is opened after pizza cooking, hot smoke or air will go out and the pizza tray is very hot.
Take out food carefully not to touch hot surfaces of the pizza oven or pizza tray or hot air.
NOTE :
When the pizza oven is operated several times in series and is overheated, the safety thermal switch works and
the heating elements stop operating. So, though the pizza oven seems to operate normally, it does not cook pizza.
Open the pizza tray and cool it for 4~5 min.
After then the pizza can cook normally.
IMPORTANT
Before using the pizza oven for the first time, operate the pizza oven without pizza for about 5 minutes in order to burn
off residues on the heating elements. You will notice an odor that is characteristics of new heating elements. This is
normal and will soon disappear.
CLEANING THE PIZZA OVEN
Always unplug the Pizza baker built-in microwaves combo and allow the pizza oven to cool completely before cleaning.
Pizza Tray:
Wipe surface with a soft, clean, damp cloth. Never use abrasive cleaners, as they may scratch the surface. Do not use
fork or other sharp, metal object to clean the pizza tray, or to remove pizza, as it may damage the pizza tray.
9
HANDLE CONTROLS
• When using the pizza tray, you must unfold the handle of the pizza tray and check the lever of the handle rise up fully.
• When not using the pizza oven, you would better fold the handle of the pizza tray.
• Before folding the handle of the pizza tray, you must push the lever of the handle.
NOTE :
You’d better not cook pizza over 1.5 inch height like Deep-dish pizza.
Those pizza would rise and touch heating element. It may burn the pizza.
You’d better not cook the pizza more than two times. Because it may burn or harden the pizza.
ABNORMAL MESSAGE
• When the temperature sensor is disconnected, “Err 1”
message will be shown in the display.
• If the inside temperature of the pizza oven is higher than
expected or the temperature sensor doesn't work properly,
“Err 2” message will be shown in the display.
• To disappear the abnormal message, press the CANCEL
button of the pizza oven.
* When “Err 1” or “Err 2” message is shown in the display, you must call for service.
10
11
1. To remove cabinet
1) Remove five screws on cabinet back.
2) Push the cabinet backward.
2. To take off the pizza oven.
1) Remove four screws on the pizza oven.
2) Push the pizza oven backward and lift up.
3) Reverse the above for assembly.
NOTE : To assemble the pizza oven, push two taps on the bottom of the pizza front plate into two rectangular
notches of the front plate securely.
12
3. To remove door assembly
1) Remove two screws which secure the stopper hinge top.
2) Remove the door assembly from top plate of cavity.
3) Reverse the above for reassembly.
NOTE : After replacing the door assembly, perform a check of correct
alignment with the hinge and cavity front plate.
4. To remove door parts.
Door As : 3511725200
REF NO.
PART NAME
PART CODE
DESCRIPTION
Q’TY
A01
DECORATOR DOOR
3511613600
STS T0.5 H/L
1
A02
BARRIER-SCREEN *O
3517006510
SAN
1
A03
FRAME DOOR
3512204620
ABS
1
A04
STOPPER HINGE *T AS
3515202900
KOR-121M0A
1
A05
DOOR PAINTING AS
3511713600
KOR-131G0A
1
A06
BARRIER-SCREEN *I
3517006400
PE T0.1
1
A07
GASKET DOOR
3512302200
PP
1
A08
HOOK
3513101400
POM
1
A09
SPRING HOOK
3515101900
PW-1
1
(1) Remove the gasket door from door plate.
(2) Remove the barrier screen inner from door plate.
(3) Remove the door frame from door painting assambly.
(4) Remove the stopper hinge top assembly from door painting assambly.
(5) Remove the spring and the hook.
(6) Remove the barrier screen outer from door frame.
(7) Reverse the above steps for reassembly.
13
5. Method to reduce the gap between the door seal and the oven front surface.
(1) To reduce gap located on part ‘A’.
• Loosen the screw on stopper hinge top, and then
push the door to contact the door seal to oven front
surface.
• Tighten the screw.
(2) To reduce gap located on part ‘B’.
• Loosen two screws on stopper hinge under, and then
push the door to contact the door seal to oven front
surface.
• Tighten two screws.
NOTE : A small gap may be acceptable if the microwave leakage does not exceed 4mW/cm2.
14
6. To remove control panel parts.
REF NO.
B01
PART NAME
SWITCH MEMBRANE
B02
CONTROL-PANEL
B03
PCB MAIN MANUAL AS
B04
SCREW TAPPING
B05
PART CODE
3518571710
3516725020
DESCRIPTION
KOD-135P9S
Q’TY
1
ABS
1
KOD-135P9S
1
7122401211
T2S TRS 4X12 MFZN
4
LEVER DOOR OPEN
3513702800
PP
1
B06
SPRING BUTTON
441G430171
SWP DIA. 0.7
1
B07
BUTTON DOOR OPEN
3516908140
ABS
1
PKMPMSBC10
1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly.
2) Remove the door open lever from the control panel.
3) Remove four screws which secure the PCB assembly to control panel.
4) Disconnect membrane tail from the connector of the PCB assembly.
5) Detach membrane from the control panel.
6) Remove door open button and button spring from the control panel.
7) Reverse the above steps for reassembly.
15
7. To remove high voltage capacitor.
1) Remove a screw which secure the grounding ring
terminal of the H.V. diode and the capacitor holder.
2) Remove the H.V. diode from the capacitor holder.
3) Reverse the above steps for reassembly.
8. High voltage circuit wiring
9. To remove magnetron.
1) Remove a screw which secure the magnetron.
2) Remove the magnetron.
3) Reverse the above steps for reassembly.
NOTE : Never install the magnetron without the metallic gasket plate which is packed with each magnetron to
prevent microwave leakage. Whenever repair work is carried out on magnetron, check the microwave
leakage. It shall not exceed 4mW/cm 2 for a fully assembled oven with door normally closed.
Metallic
gasket
plate
Magnetron
antenna
Cooling fin
Filament
terminal
16
10. To remove wind guide assembly.
1) Remove a screw which secure the wind guide assembly.
2) Draw forward the wind guide assembly.
3) Pull the fan from the motor shaft.
4) Remove two screws which secure the motor shaded pole.
5) Remove the motor shaded pole.
6) Reverse the above steps for reasembly.
11. To remove H.V.transformer.
1) Remove four screws holding the H.V.transformer.
2) Remove the H.V.transformer.
3) Reverse the above steps for reassembly.
17
INTERLOCK MECHANISM AND ADJUSTMENT
The door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation when
the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave.
WH/BK
RD/RD
BL
BK
GN
BL
INTERLOCK
LAMP SWITCH(REAR)
Condition : DOOR CLOSE
Condition : DOOR OPEN
(1) Primary interlock switch
When the door is closed, the hook locks the oven door. If the door is not closed properly, the oven will not operate.
When the door is closed, the hook pushes the button of the micro switch. Then the button of the primary interlock switch
bring it under NO condition.
(2) Secondary interlock switch and interlock monitor switch / interlock lamp switch
When the door is closed, the hook pushes the lock lever downward. The lock lever presses the button of the interlock
monitor switch to bring it under NO condition. The lock lever presses the button of the secondary interlock switch to bring
it under NO condition.
(3) Pizza Oven interlock switch
When the pizza tray is closed, the lever pushes the lever of the micro switch.
Then the button of the toast interlock switch bring it under NO condition.
ADJUSTMENT :
Interlock monitor switch
When the door is closed, the interlock monitor switch should be changed (NO condition) before other switches are closed.
When the door is opened, the interlock monitor switch should be changed (NC condition) after other switches are opened.
(4) Adjustment steps
a) Loosen the one mounting screw.
b) Adjust interlock switch assembly position.
c) Make sure that lock lever moves smoothly after adjustment is completed.
d) Tighten completely two mounting screws.
NOTE :
Microwave emission test should be performed after adjusting interlock mechanism.
If the microwave emission exceed 4mW/cm 2 , readjust interlock mechanism.
18
19
20
21
22
23
24
2. MICROWAVE RADIATION TEST
CAUTION :
1. Make sure to check the microwave leakage before and after repair of adjustment.
2. Always start measuring of an unknown field to assure safety for operating personnel from microwave energy.
3. Do not place your hands into any suspected microwave radiation field unless the safe density level is known.
4. Care should be taken not to place the eyes in direct line with the source of microwave energy.
5. Slowly approach the unit under test until the radiometer reads an appreciable microwave leakage from the unit
under the test.
PROCEDURES
1. Prepare Microwave Energy Survey Meter, 600cc glass
beaker, and glass thermometer 100˚C(212˚F).
2. Pour 275cc±15cc of tap water initially at 20±5˚C(68±9˚F) in
the 600cc glass beaker with an inside diameter of approx.
8.5mm(3.5in.).
3. Place it at the center of the tray and set it in a cavity.
4. Close the door and operate the oven.
5. Measure the leakage by using Microwave Energy Survey
Meter with dual ranges, set to 2450MHz.
1) Measured radiation leakage must not exceed the value
prescribed below. Leakage for a fully assembled oven with
door normally closed must be less than 4mW/cm2.
2) When measuring the leakage, always use the 5cm(2in.)
space cone with probe. Hold the probe perpendicular to
the cabinet and door. Place the space cone of the probe
on the door, cabinet, door seem, door viewing screen, the
exhaust air vents and the suction air vents.
3) Measuring should be in a counter-clockwise direction at a
rate of 1 in./sec. If the leakage of the cabinet door seem is
unknown, move the probe more slowly.
4) When measuring near a corner of the door, keep the probe
perpendicular to the areas making sure the probe end at
the base of the cone does not get closer than 2 in. from any metal. If it does not, erroneous reading may result.
25
3. COMPONENT TEST PROCEDURE
• High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle.
• It is neither necessary nor advisable to attempt measurement of the high voltage.
• Before touching any oven components or wiring, always unplug the oven from its power source and discharge the
capacitor.
1. High voltage transformer
(1) Remove connections from the transformer terminals and check continuity.
(2) Normal readings should be as follows:
Secondary winding ...................Approx. 110Ω±10%
Filament winding....................................Approx. 0Ω
Primary winding .....................................Approx. 1Ω
2. High voltage capacitor
(1) Check continuity of capacitor with meter on the highest OHM scale.
(2) A normal capacitor will show continuity for a short time, and then indicate 10MΩ once the capacitor is charged.
(3) A shorted capacitor will show continuous continuity.
(4) An open capacitor will show constant 10MΩ.
(5) Resistance between each terminal and chassis should be infinite.
3. High voltage diode
(1) Isolate the diode from the circuit by disconnecting the leads.
(2) With the ohmmeter set on the highest resistance scale measure the resistance across the diode terminals.
Reverse the meter leads and again observe the resistance reading.
Meter with 6V, 9V or higher voltage batteries should be used to check the front-back resistance of the diode,
otherwise an infinite resistance may be read in both directions.
A normal diode’s resistance will be infinite in one direction and several hundred KΩ in the other direction.
4. Magnetron
For complete magnetron diagnosis, refer to “Measurement of the Microwave Power Output”.
Continuity checks can only indicate and open filament or a shorted magnetron.
To diagnose for an open filament or a shorted magnetron.
(1) Isolate magnetron from the circuit by disconnecting the leads.
(2) A continuity check across magnetron filament terminals should indicate 0.1Ω or less.
(3) A continuity check between each filament terminal and magnetron case should read open.
5. Fuse
If the fuse in the primary and monitor switch circuit is blown when the door is opened, check the primary and monitor
switch before replacing the blown fuse.
In case the fuse is blown by an improper switch operation, replace the defective switch and fuse at the same time.
Replace just the fuse if the switches operate normally.
26
WIRING DIAGRAM
27
28
MP1
MP2
Measure Point
29
30
2. PCB CIRCUIT DIAGRAM
31
3. P.C.B. LOCATION NO.
NO
NAME
SYMBOL
SPECIFICATION
PART CODE
Q’TY
1
BUZZER
BZ1
BM-20K
3515600100
1
2
C ARRAY
CA1
7P(6) 1000PF M 50V
CN6XB-102M
1
3
CAPACITOR CERA
C8
102 50V Z AXIAL
CCZB1H102K
1
4
CAPACITOR CERA
C1~7,C9,C10
104 50V Z AXIAL
CCZF1H104Z
9
5
CAPACITOR ELEC
EC1
50V RS 10UF
CEXE1H100A
1
6
CAPACITOR ELEC
EC2
25V RSS 1000MF
CEXF1E102V
1
7
CONNECTOR WAFER
CN1
YW396-03V
3519150530
1
8
CONN WAFER
CN2
35312-0310
30166M5030
1
9
CONNECTOR WAFER
CN3
FCZ 254-11
441M367160
1
10
CONNECTOR WAFER
CN4
YW396-07AV
3519150540
1
11
DIODE RECTIFY
D1~11, D14
1N4148
DZN4148---
12
12
DIODE RECTIFY
D12,13
KN4004A
DZN4004A--
2
13
DIODE ZENER
ZD1
UZ- 3.3BSB 1/2W
DZUZ3R3BSB
1
14
DIODE ZENER
ZD2
UZ- 5.1BSB 1/2W
DZUZ5R1BSB
1
15
IC MICOM
IC1
HMS87C1708B-
16
LED DISPLAY
DP1
LTC-4651HG(631)
17
PCB MAIN
M314
18
R ARRAY
19
150SD135P-
1
DDDG631H02
1
90X163.7
3514330600
1
RA1
8P(7) 1/8 100K OHM J
RA-88X104J
1
R ARRAY
RA2
7P(6) 1/8 100K OHM J
RA-87X104J
1
20
R CARBON FILM
R4~10
1/6W 330 5%
RD-AZ331J-
7
21
R CARBON FILM
R1,3,13,16,22,23,29
1/6W 1K 5%
RD-AZ102J-
7
22
R CARBON FILM
R19
1/6W 4.7K 5%
RD-AZ472J-
1
23
R CARBON FILM
R15
1/6W 200 5%
RD-AZ201J-
1
24
R CARBON FILM
R14,R26,R27
1/6W 10K 5%
RD-AZ103J-
3
25
R CARBON FILM
R2,R12
1/6W 100K 5%
RD-AZ104J-
2
26
R CARBON FILM
R17
1/6W 1M 5%
RD-AZ105J-
1
27
R CARBON FILM
R24,R25
1/4W 180 5%
RD-4Z181J-
2
28
R CARBON FILM
R28
1/2W 27 5%
RD-2Z270JS
1
29
R METAL FILM
R11
1/6 10K OHM 1%
RN-AZ1002F
1
30
R METAL FILM
R18
1/6 120K OHM 1%
RN-AZ1203F
1
31
RESONATOR CERA
CR1
CRT 4.00MS
5P4R00MTS-
1
32
IC REGULATOR
VL1
MC7805C
1CPMC7805C
1
33
TRANSISTOR
Q1~5
KRA106M
TZRA106M--
5
34
TRANSISTOR
Q7,Q9~12
KRC106M
TZRC106M--
5
35
TRANSISTOR
Q6
KTA-1266Y
TZTA1266Y-
1
36
TRANSISTOR
Q8
KTC3198GR
TZTC3198GR
1
37
TRANS POWER
LVT1
DMR-161FS
5EPV035308
1
38
SW RELAY
RY1,RY3
G5G-1A-DT DC12V
5SC0101123
2
39
SW RELAY
RY2,RY4
CS11-12SH 1C 1P
5SC0101128
2
40
WIRE COPPER
J1,2,4~8,10~13,J16,SJ2 1/0.52 TIN COATING
85801052GY
13
41
WIRE COPPER
J3,9,14,15
85801052GY
4
1/0.52 TIN COATING
32
EXPLODED VIEW AND PARTS LIST
1. DOOR ASSEMBLY
Refer to Disassembly and assembly
2. CONTROL PANEL ASSEMBLY
Refer to Disassembly and assembly
3. TOTAL ASSEMBLY
33
✔ Caution : In this Manual, some parts can be changed for improving, their performance without notice in the
parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service
Information Center (http://svc.dwe.co.kr).
NO
PART NAME
PART CODE
DESCRIPTION
Q'TY
A00
DOOR AS
3511725200
KOD-135P9A
1
B00
CONTROL-PANEL AS
3516732510
KOD-135P9S
1
C00
ASSY PIZZA OVEN
3510022010
KOD-135P9S
1
F01
CAVITY AS
3516111500
KOR-131G0A
1
F02
CABINET AS
3510808700
KOD-135P9A
1
F03
CORD POWER AS
35113A5QJ5
3X1.6AWG 80X80 120-RTML
1
F04
NOISE-FILTER
3518606100
DWLF-M13
1
F05
MOTOR SHADED POLE
3963514100
230V 50W MW15CA-K03
1
F06
GUIDE WIND
3512520000
PP
1
F07
FAN
3511800100
P.P GF20
1
F08
MAGNETRON
3518002900
2M218J(F)P 6CF
1
F09
HOLDER HV CAPACITOR
3513003200
SECC T0.6
1
F10
CAPACITOR HV
3518302300
2100VAC 1.1UF #187
1
F11
DIODE HV
3518400400
HVR-1X-3AB 12KV #187
1
F12
FUSE HV
3518701100
5KV 0.55A HV-41A55-02
1
F13
TRANS HV
3518117920
R0S5AA
1
F14
BASE
3510313400
SBHG T0.7
1
F15
FOOT
3512100900
PP DASF-130
2
F16
STOPPER HINGE *U AS
3515202800
KOR-121M0A
1
F17
SW MICRO
4415A17352
VP-533A-OF SPNO #187 200G
1
F18
SWITCH PUSH
3518571000
MP101C
1
F19
SW MICRO
4415A66600
VP-532A-OF SPNC #187 200G
1
F20
SW MICRO
4415A66910
VP-531A-OF/SZM-V16-FA-61
1
F21
LEVER LOCK
3513702600
POM
1
F22
LOCK
3513814300
POM M90-02 F20
1
F23
LAMP
3513601600
BL 240V 25W T25 C7A H187
1
F24
HARNESS MAIN
3512781500
KOD-135P9A
1
F25
MOTOR SYNCRO
3966310100
230V 2.5W GM-16-24FD12
1
F26
THERMOSTAT
3518905400
OFF:90 ON:60 H #187 NB
1
F27
HOLDER THERMOSTAT
3513003410
PP(BK)
1
F28
STOPPER HINGE *T AS
3515202900
KOR-121M0A
1
F29
COVER WAVE GUIDE
3511406200
HEATPROOF PP
1
F30
COUPLER
3517400620
XAREC
1
F31
GUIDE ROLLER AS
3512512920
KOR-121Q4A
1
F32
TRAY
441X335A10
BORO-S1 GLASS(NEG)
1
34
4. PIZZA OVEN ASSEMBLY (C00)
35
NO
PART NAME
PART CODE
DESCRIPTION
Q'TY
1
HANDLE PIZZA *T
3512605400
ABS
1
2
HANDLE PIZZA *U
3512605500
ABS
1
3
LEVER HANDLE
3513703200
PC
1
4
SPRING HANDLE
3515102800
SWP •’0.4
1
5
BRACKET HANDLE
3510609200
ABS
1
6
SHAFT HANDLE
3514901400
SWRM3 •’4
1
7
PANEL PIZZA
3514200600
PC
1
8
SUPPORTER PIZZA PANEL
3515308700
PBT
1
9
PLATE PIZZA PANEL
3514502800
SBHG T0.6
1
10
TRAY PIZZA
3517210300
SA1D T0.6, Teflon coating
1
11
HEATER PIZZA *T
3512806510
KOD-135P9S
1
12
PLATE TOP
3514502600
SBHG T0.4
1
13
PLATE REAR
3514502700
SECC T0.5
1
14
SENSOR TEMPERATURE
3514801400
PTM-K312-D7
1
15
HEATER PIZZA *U
3512806610
KOD-135P9S
1
16
THERMOSTAT
3518907000
OFF:130 ON:60 V #187
1
17
PLATE SIDE
3514502500
SBHG T0.4
1
18
LEVER SW MICRO
3513703300
KOD-135P9A(SPNO)
1
19
PLATE FRONT
3514502400
SBHG T0.6
1
20
COVER FRONT
3511411400
PBT
1
21
FRAME PIZZA
3512208900
PC
1
22
PROTECTOR FRAME
3517504700
STS T0.5 H/L
1
23
DECORATOR PIZZA
3511613900
STS T0.5 H/L
1
36
DAEWOO ELECTRONICS CORP.
686, AHYEON-DONG MAPO-GU SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX: DWELEC K28177-8
CABLE: “DAEWOOELEC”
S/M NO. : D135P9S001
PRINTED DATE: Sep. 2005