Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo KOC KOC-870T0S & 870T5S & 873T0S & 873T5S KOC-870T0S & 870T5S & 873T0S & 873T5S
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download KOC-870T0S & 870T5S & 873T0S & 873T5S documenatation <<
Text preview - extract from the document
S/M No. : C870T0S004
Service Manual
Microwave Oven
Model: KOC-870T0S
KOC-870T5S
KOC-873T0S
KOC-873T5S
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).
DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr Aug. 2002
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 micro-
wave 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.
(c) Before turning on microwave power for any service test or inspection within the microwave generating com-
partments, 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
PROPER USE AND SERVICE PRECAUTIONS .......................................................................................................................2
SPECIFICATIONS.......................................................................................................................................................................3
NAMES AND FUNCTION OF PARTS........................................................................................................................................4
CONTROL PANEL ......................................................................................................................................................................5
OPERATION................................................................................................................................................................................7
INTERLOCK MECHANISM FUNCTIONS AND ADJUSTMENTS .............................................................................................8
PRECAUTIONS FOR DISASSEMBLY AND REPAIR .............................................................................................................10
DISASSEMBLY AND ASSEMBLY............................................................................................................................................11
TROUBLE SHOOTING GUIDE ................................................................................................................................................20
MEASUREMENT ......................................................................................................................................................................27
COMPONENT TEST PROCEDURE ........................................................................................................................................29
WIRING DIAGRAM ...................................................................................................................................................................30
SCHEMATIC DIAGRAM ...........................................................................................................................................................31
EXPLODED VIEWS AND PARTS LIST ...................................................................................................................................34
PRINTED WIRING BOARD (KOC-870T) ................................................................................................................................37
P.C.B. CIRCUIT DIAGRAM (KOC-870T) .................................................................................................................................44
P.C.B. LOCATION NO (KOC-870T) . .......................................................................................................................................45
PRINTED WIRING BOARD (KOC-873T) ................................................................................................................................47
P.C.B. CIRCUIT DIAGRAM (KOC-873T) .................................................................................................................................54
P.C.B. LOCATION NO (KOC-873T) . .......................................................................................................................................55
1
PROPER USE AND SERVICE PRECAUTIONS
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) This microwave oven weight 19kg (38.9 lbs.) and must be placed on a horizontal base strong enough to support this
weight.
2) The oven should be placed as far from high temperature source and vapour as possible.
3) The power supply cord is about 1.1m (3.6ft) long. Earthing is required when connecting the power source.
4) Maximum power consumption of this oven is approximately 2.6Kw(230V). It is suggested that the unit is operated on
such power line (about 13 amperes) that can provide more power than this rating.
5) Object must not be placed on the top enclosure so as not to obstruct air flow for ventilation.
WARNING : This appliance must be earthed.
IMPORTANT
The wires in this mains lead coloured in accordance with the following code.
Green-and-yellow : Earth
Blue : Neutral
Brown : Live
As the colours of the wires in the mains 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 the the terminal in the plug which is marked with
the letter `E' or by earth symbol or 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 with the letter `L' or coloured
red.
NOTE : This oven is designed for counter-top use only.
2
SPECIFICATIONS
MODEL KOC-870T0S/873T0S KOC-870T5S/873T5S
POWER SUPPLY 230V ~ , 50Hz 240V~, 50Hz 230V~, 50Hz
MICROWAVE POWER CONSUMPTION 1,550 W 1,550 W 1,550 W
OUTPUT POWER 900 W (IEC 705) 900W(IEC 706) 900 W (IEC 705)
FREQUENCY 2,450 MHZ 2,450MHz 2,450MHz
GRILL POWER CONSUMPTION 1,150 W 1,200 W 1,150 W
CONVECTION POWER CONSUMPTION 1,550 W 1,600 W 1,550 W
AUTO COOK POWER CONSUMPTION 2,600 W 2,650 W 1,550 W
OUTSIDE DIMENSIONS (W X D X H ) 501 X 398 X 320 mm (19.7 X 15.7 X 12.6 in.)
CAVITY DIMENSIONS (W X D X H) 310 X 310 X 229 mm (12.2 X 12.6 X 9.0 in.)
NET WEIGHT 19 kg (38.9 Ibs.)
TIMER 60 minutes
SELECT FUNCTION Microwave/Grill /Convection /Combination
MICROWAVE POWER LEVEL 10 stages
* Specifications subject to change without notice.
EXTERNAL VIEWS
DEFROST
M/W GRILL COMBI WEIGHT TIME
AUTO PIE TEMP kg
COOK COOK
Grill Combi +1 min
Pie Temp +10 sec
Auto Cook
1. Roast Beef
2. Roast Pork
294
320
3. Roast Chicken
4. Fish Fillets
5. Vegetable
STOP/ START
CLEAR
M/W
+ Speedy
Defrost
-
Clock
TIME/WEIGHT
332 210
501 402
Fig. 1 Front View Fig. 2 Side View
3
NAMES AND FUNCTION OF PARTS
3 4 5 6
DEFROST
M/W GRILL COMBI WEIGHT TIME
AUTO PIE TEMP kg
COOK COOK
Grill Combi +1 min
2 Pie Temp +10 sec
1. Roast Beef
2. Roast Pork
Auto Cook
3. Roast Chicken
7
4. Fish Fillets
5. Vegetable
STOP/ START
CLEAR
M/W
+ Speedy
Defrost
-
Clock
TIME/WEIGHT
1 9 8
8
10
11
1 DOOR SEAL - Door seal maintains the microwave 7 CONTROL PANEL
within the oven cavity and prevents microwave leakage.
8 TURNTABLE TRAY - Rotates during cooking and
2 DOOR HOOK - When door is closed, it will automatically ensure even distribution of Microwaves. It can also be
lock shut. If door is opened while oven is operating, used as a cooking utensil.
magnetron tube will immediately stop operating.
9 OVEN FRONT PLATE
3 DOOR SCREEN - Allows viewing of food. Microwave
0 ROTATING BASE - This fits over the shaft in the center
cannot pass through perforations in screen.
of the oven's cavity floor. This is to remain in the oven for
4 GRILL HEATER - Turns on when grill and simulta- all cooking. It should only be removed for cleaning.
neous cooking is selected.
q UNDER HEATER
5 OVEN LAMP - Automatically turns on during oven
operating.
6 SAFETY INTERLOCK SYSTEM
4
CONTROL PANEL
KOC-870T
When blinking, the oven is When blinking, the oven is
operating in COMBI cooking. operating in WEIGHT
DEFROST.
When blinking, the oven is When blinking, the oven is
operating in GRILL operating in TIME DEFROST.
When blinking, the onve is
operating in MICROWAVE
COOK When blinking, the oven is
When blinking, the oven is DEFROST operating in weight input
M/W GRILL COMBI WEIGHT TIME mode.
operating in AUTO COOK.
When blinking, the oven is
operating in PIE COOK.
AUTO PIE TEMP Kg
COOK COOK
Cooking time is increased
When blinking, the oven is by 1 minute.
operating in CONVECTION Grill Combi +1 min
(TEMP COOK)
Pie Temp +10 sec Cooking time is increased
by 10 seconds.
Temp Button Used to set
desired temperature. If this
button pressed for more than
FUNCTION BUTTON
1.3 seconds, number is scrolled Auto Cook Used to select desired oven
up automatically. 1. Roast Beef operation.;Grill, Combi, Pie
2. Roast Pork Temp, Auto Cook, M/W,
3. Roast Chicken Defrost.
4. Fish Fillets
5. Vegetable Stop/Clear Button-Used to select
Microwave Button-Used to desired oven operation.;Grill, Combi,
select the variable microwave STOP/ START Pie Temp, Auto Cook, M/W,Defrost.
power level. If this button is CLEAR
pressed for more than 1.3
seconds, number is scrolled Start Button-Used to start the
up automatically. selectee cycle.
M/W
+ Speedy
Speedy Cook Button-
Used to set desired time.
(Time increases by 30 seconds
from 30 seconds to 5 minutes.)
Defrost
- Guide Lamp-
When blinking, it informs you to
be ready to operate dial knob.
Clock
Clock Button-Used to set
time. Dial Knob-
Used to set the cooking time,
TIME/WEIGHT time of day and weight input.
5
CONTROL PANEL
KOC-873T
When blinking, the oven is When blinking, the oven is
operating in "Combi" cooking operating in "Weight Defrost"
mode. cooking mode.
When blinking, the oven is When blinking, the oven is
operating in "Grill" cooking operating in "Time Defrost"
mode. cooking mode.
When blinking, the oven is
operating in "Microwave" KOC-873T0S
cooking mode. When blinking, the oven is
Defrost
MW Grill Combi Weight Time operating in weight input
When blinking, the oven is mode.
operating in "Auto Cook"
cooking mode. When blinking, the oven is
Auto Temp
operating in "Convection"
Pie Kg cooking mode.
Cook Cook
When blinking, the oven is
operating in "Pie" cooking Cooking time is increased by
Defrost +1min +10sec
mode. 1 minute.
Cooking time is increased by
10 seconds.
Clock Pie Temp
Temp Button -Used to
set desired temperature.
If this button pressed for
more than 1.3 seconds,
number is scrolled up
automatically.
MW
Clock Button - Used to set
time. Auto
Grill Cook Combi
Microwave Button -
Used to select the variable
microwave power level. If this FUNCTION BUTTON-Used
button is pressed for more Auto Cook Menu to select desired oven
1. Roast beef
than 1.3 seconds, number is 2. Roast pork
operation.
scrolled up automatically. 3. Roast chicken ;Grill, Combi, Pie, Temp,
4. Fish Fillet Auto Cook, MW, Defrost.
5. Vegetable
Dial Knob- Used to input the
cooking time and quantity.
TIME WEIGHT/QUANTITY
START Button - Used to
STOP/CLEAR
start the selected cycle.
STOP/CLEAR Button - Used START/SPEEDY COOK SPEEDY COOK Button -
to pause and clear all Used to program quickly
information manually put into cooking time in 30 seconds
the oven. increments. (Time increases
by 30 seconds from 30
seconds to 5 minutes.)
6
OPERATION
TO STOP THE OVEN WHILE THE OVEN IS OPERATING
1. Press (STOP / CLEAR) button.
- The (STOP) indicator starts blinking.
- You can restart the oven by touching (START) button.
- Touch once more to erase all instruction except clock.
2. Open the door
- You can restart the oven by closing the door and touching button.
NOTE : Oven stops operating when door open.
ERASING INSTRUCTIONS
◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo