Samsung CM1319 User manual

MICROWAVE OVEN
CM1319 / CM1329
CM1619 / CM1629
CM1919 / CM1929
SERVICE "=m
MICROWAVE OVEN CONTENTS |
SESC
1. Precaution
2. Specifications
3. Operating Instructions
4. Disassembly and Reassembly
5. Alignment and Adjustments
6. Troubleshooting
7. Exploded Views and Parts List
8. Schematic Diagrams
9. Wiring Diagram &
Operating Sequence

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
(c)
Before
turning
on
microwave
power
operated
with
the
door
open.
for
any
service
test
or
inspection
within
(b)
Make
the
following
safety
checks
on
the
microwave
generating
-
all
ovens
to
be
serviced
before
activating
compartments,
check
the
magnetron,
the
magnetron
or
other
microwave
wave
guide
or
transmission
line,
and
source,
and
make
repairs
as
necessary:
cavity
for
proper
alignment,
integrity,
(1)
Interlock
operation,
and
connections.
(2)
proper
door
closing,
(d)
Any
defective
or
misadjusted
(3)
seal
and
sealing
surfaces
(arcing,
components
in
the
interlock,
monitor,
wear,
and
other
damage),
door
seal,
and
microwave
generation
(4)
damage
to
or
loosening
of
hinges
and
transmission
systems
shall
be
and
latches,
repaired,
replaced,
or
adjusted
by
(5)
evidence
of
dropping
or
abuse.
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.
re

t
Precaution
Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use,
repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially
lethal high voltages and currents.
1-1 Safety precautions (/\ )
1.
Da
10.
11.
All repairs should be done in accordance
with the procedures described in this manual.
Microwave emission check should be
performed to prior to servicing if the oven is
operative.
If the oven operates with the door open:
Instruct the user not to operate the oven and
contact the manufacturer and the center for
devices and radiological health immediately.
Notify the Central Service Center if the
microwave leakage exceeds 5 mW/cm’.
Check all grounds.
Do not power the MWO from a "2-prong"
AC cord. Be sure that ail of the built-in
protective devices are replaced. Restore any
missing protective shields.
When reinstalling the chassis and its
assemblies, be sure to restore all protective
devices, including: nonmetallic control
knobs and compartment covers.
Make sure that there are no cabinet openings
through which people --particularly
children --might insert objects and contact
dangerous voltages. Examples: Lamp hole,
ventilation slots.
Inform the manufacturer of any oven found
to have emission in excess of 5 mW/cm’ ,
Make repairs to bring the unit into
compliance at no cost to owner and try to
determine cause.
Instruct owner not to use oven until it has
been brought into compliance.
Service technicians should remove their
watches while repairing an MWO
To avoid any possible radiation hazard,
replace parts in accordance with the wiring
diagram. Also, use only the exact
replacements for the following parts:
Primary and secondary interlock switches,
interlock monitor switch.
. If the fuse is blown by the Interlock Monitor Switch:
Replace all of the following at the same time:
Primary, door sensing switch and power relay,
as well as the Interlock Monitor Switch. The correct
adjustment of these switches is described elsewhere
in this manual. Make sure that the fuse has the correct
rating for the particular model being repaired.
13. Design Alteration Warning:
14.
15.
16.
17.
18.
19.
Use exact replacement parts only, i-e.,
only those that are specified in the
drawings and parts lists of this manual.
This is especially important for the
Interlock switches, described above.
Never alter or add to the mechanical or
electrical design of the MWO. Any design
changes or additions will void the
manufacturer’s warranty. Always unplug
the unit’s AC power cord from the AC
power source before attempting to
remove or reinstall any component or
assembly.
Always unplug the unit’s AC power cord
from the AC power source before
attempting to remove or reinstall any
component or assembly.
Never defeat any of the B+ voltage
interlocks. Do not apply AC power to the
unit (or any of its assemblies) unless all
solid-state heat sinks are correctly installed.
Some semiconductor ("solid state") devices
are easily damaged by static electricity. Such
components are called Electrostatically Sensitive
Devices (ESDs). Examples include integrated
circuits and field -effect transistors.
Immediately before handling any
semiconductor components or assemblies,
drain the electrostatic charge from your
body by touching a known earth ground.
Always connect a test instrument’s ground
lead to the instrument chassis ground before
connecting the positive lead; always remove
the instrument’s ground lead last
When checking the continuity of the witches
or transformer, always make sure that the
power is OFF, and one of the lead wires is
disconnected.
Components that are critical for safety are
indicated in the circuit diagram by
shading, A\ or A\ -
. Use replacement componenis that have the
same ratings, especially for flame resistance
and dielectric strength specifications. A
replacement part that does not have the
same safety characteristics as the original
might create shock, fire or other hazards.

1-2 Special High Voltage Precautions
1. High Voltage Warning
Do
not
attempt
to
measure
any
of
the
high
:
ei
:
voltages
--this
includes
the
filament
voltage
omit
©
.
ed
Voltage,
Capacitors
of
the
magnetron.
High
voltage
is
present
Sols
eee.
during any cook cycle.
Before touching any components or wiring,
always unplug the oven and discharge the
high voltage capacitor (See Figure 1-1)
2. The high-voltage capacitor remains charged
about 30 seconds after disconnection. Short
the negative terminal of the high-voltage
capacitor to to the oven chassis. (Use a
screwdriver.)
3. High voltage is maintained within specified
limits by close-tolerance, safety-related
components and adjustments. If the high
voltage exceeds the specified limits, check
each of the special components.
PRECAUTION
Negative
Terminal
There exists HIGH VOLTAGE ELECTRICITY
with high current capabilities in the circuits of
| the HIGH VOLTAGE TRANSFORMER
secondary and filament terminals. It is
extremely dangerous to work on or near
these circuits with the oven energized.
DO NOT measure the voitage in the high voltage
circuit including filament voltage of magnetron.
Note : Touch chassis side first then short
to the high voltage capacitor
terminal by using a screwdriver.
PRECAUTION
Never touch any circuit wiring with your hand nor
with an insulated tool during operation.
PRECAUTION
Servicemen should remove their watches
whenever working close to or replacing the
magnetron.

2. Specifications
2-1 Table of Specifications
CM1919/CM1929 CM1619/CM1629 | CM1319/CM1329
TIMER Max. 25min Max. 25min Max. 25min
POWER SOURCE
230V 50Hz, AC 230V 50Hz, AC 230V 50Hz, AC
POWER CONSUMPTION MICROWAVE : 3200W | MICROWAVE: 3000W | MICROWAVE : 2600W
OUTPUT POWER 1850W (ICE-705) 1600W (ICE-705) 1300W (ICE-705)
OPERATING FREQUENCY | 2,450MHz 2,450MHz 2,450MHz
MAGNETRON OM75P(20)ESS OM75P(20)ESS OM75P(20)ESS
VENTILATION MOTOR VENTILATION MOTOR
COOLING METHOD VENTILATION MOTOR
OUTSIDE DIMENSIONS 464(W)*368(H)*557(D) | 464(W)*368(H)*557(D) | 464(W)*368(H)*557(D)
NET WEIGHT 32 Kg 32 Kg 32 Kg
SHIPPING WEIGHT
34.5 Kg 34.5 Kg 34.5 Kg

3. Operating Instructions
3-1 Features (CM1319/CM1619/CM1919)
VARIABLE COOKING POWER CONTROL DIAL
OVEN LAMP (230V 25W) TIMER DIAL
+20sec PAD
STOP/CANCEL PAD
DISPLAY
OVEN LAMP COVER
START BUTTON
DOOR
HANDLE
CEILING
COVER
SAFETY
INTERLOCK
HOLES
DOOR
PLATE TRAY
DOOR LATCHES
AIR FILTER
3-2 Features (CM1329/CM1629/CM1929)
CONTROL PANEL
OVEN LAMP (230V 25W)
DISPLAY
OVEN LAMP COVER
START BUTTON
DOOR HANDLE
CEILING COVER
SAFETY INTERLOCK
HOLES
DOOR
PLATE TRAY
DOOR LATCHES
AIR FILTER

3-3 Control Panel (CM1329 / CM1629 / CM1929)
QO ® ®
"3 HAAG
ON wa, pe ef tP 22
1
2
3
4.
5.
6
7
8
9
OQ © @® OQ Ww
_ DISPLAY
. PROGRAM PAD
. PROGRAM LOCK PAD
NUMBER PADS(TIME, MEMORY PROGRAMMING)
POWER LEVEL SELECTOR PAD
. DEFROST SELECTOR PAD
. DOUBLE QUANTITY PAD
. +20sec PAD (ONE TOUCH COOK PAD)
. STOP/CANCEL PAD
10. START BUTTON
3-4 External Views

3-5. Operation Guide (CM1919/CM1619/CM1319)
Cooking/Reheating
1. Make
sure
the
oven
is
plugged
into
a
properly
earthed
electrical
outlet
and
’ON’
appears
in
the
display
window.
. Open the door.
The oven lamp will be turned on.
.
Put
the
food
into
a
suitable
container,
place
it
in
the
center
of
the
oven
and
then
close
the
door
securely.
Result : The oven lamp will go off.
. Select the desired power level by rotating the COOKING POWER CONTROL DIAL.
Result : The selected power level will be displayed in the display window.
ON lle
. Set the desired heating time by rotating the TIMER DIAL.
Result: ON’ blinks and the selected time is displayed in the display window.
. Press <)> pad:
Result :The oven lamp and cooling fan will be turned on.
Heating will start.
The time on digital display will count down.
7.
When
all
time
is
elapsed,
the
end
of
cycle
Beep
Tone
will
sound
4
times
and
all
heating
will
stop.
The
oven
lamp
will
go
off.
For
1
min,
the
display
shows
and
the
cooling
fan
will
keep
working
in
order
to
cool
down
the
interior
parts.
During
the
time,
the
fan
will
not
stop
even
when
you
open
the
door.
1
min
later
it
will
stop
and
ON
appears
again.
Food
may
be
removed
from
oven
whilst
the
fan
is
still
running.
. Open the door and take the food out.
. Close the door. The oven lamp will go off.
NOTE
:
Whilst
heating,
one
press
on
©
pad
stops
the
oven.
You
can
restart
it
by
pressing
the
>
pad
ora
second
press
on
&
pad
will
cancel
the
selected
program.
When
it
is
NOT
in
a
heating
cycle,
one
tap
on
@
pad
cancels
the
selected
program.
You
can
set
the
power
level
first
and
then
the
cooking
time
next,
or
vice
versa.
You
can
press
+30sec
button
one
or
more
times
in
order
to
add
the
cooking
time
by
30
seconds.

3-5. Operation Guide (CM1919/CM1619/CM1319)
To stop the cooking
You can stop cooking at any time so that you can:
e@ Check the food
e@ Turn the food over or stir it
@ Leave it to stand
* Temporarily ; Open the door or press @ button once.
Result: Cooking stops. To resume cooking, close the door and press </> again.
* Completely ; Press the @ button twice.
Result: The cooking settings are cancelled.
If you want to cancel any cooking settings before starting cooking, simply press © once.
Using the Defrost Feature
The Defrost feature enables you to defrost meat, poultry, fish.
NOTE : Only use containers that are microwave-safe.
1. Open the door.
2. Place the frozen food in the center of the plate tray.
3. Close the door.
4. Rotate the Variable Cooking Power Control dial to the DEFROST HIGH(%% ) or DEFROST LOW( ¥ ) as
you. wish.
Result : The DEFROST indicator appears on the digital display.
> 7
. ul
ON FF)
5. Rotate the TIMER dial to set the defrosting time.
The Maximum time that can be set under defrosting mode is 50min.
OLE
Leuidi
ON %
6. Press <)> button.
Result : Defrosting begins.

3-3 Operation Guide (CM1929/CM1629/CM1329)
One-stage cooking
This oven is preset at the factory for automatic operation.
Make
sure
the
oven
is
plugged
into
a
properly
earthed
electrical
outlet
and
ON’
appears
in
the
display
window.
Open
the
door
(The
oven
lamp
will
be
turned
on.).
Put
the
food
into
a
suitable
container,
place
it
in
the
centre
of
the
oven
and
then
close
the
door
securely
(The
oven
lamp
will
go
off.).
1. Select the desired power level by pressing the Power Level Selector pad.
Result
:
The
selected
power
level
will
be
displayed
in
the
display
window.
2. Set the desired heating time by pressing the NUMBER pads.
Result : The selected time is displayed in the display window.
ON ie:Ug |
*
The
maximum
time
according
to
each
cooking
power
level
can
be
referred
to
in
the
title
“Power
Levels
ans
Time
Variations”
.
The
NUMBER
pads
will
not
operate
or
respond
when
you
press
a
cooking
time
exceeding
the
maximum
value.
It
is
not
possible
to
set
a
cooking
time
for
longer
than
the
maximum
time
allowed
on
the
chosen
program.
It
is
advisable
to
press
CANCEL
and
to
enter
a
new
power
level
and
cooking time.
3. Press <}> button:
Result
:
The
oven
lamp
and
cooling
fan
will
be
turned
on.
Heating
will
start.
The time on digital display will count down.
159
*
When
all
time
is
elapsed,
the
end
of
cycle
Beep
Tone
will
sound
4
times
and
all
heating
will
stop.
The
oven
lamp
will
go
off.
For1min,thedisplay
shows
‘0
“and
the
cooling
fan
will
keep
working
in
order
to
cool
down
the
interior
parts.
During
the
time,
the
fan
will
not
stop
even
when
you
open
the
door.
1
min
later
it
will
stop.
Food
may
be
removed
from
oven
whilst
the
fan
is
still
running.
4, Open the door and take the food out.
Close the door. The oven lamp will go off.
*
Whilst
in
a
heating
cycle,
one
press
on
©
pad
stops
the
oven.
At
this
time,
the
Power
Check
Indicator
“ON”
starts
blinking
and
goes
off
when
the@
pad
or<}>button
is
pressed
again.
You
can
restart
it
by
pressing
the<}>
button
or
a
second
press
on
©
pad
will
cancel
the
selected
program.
While
NOT
in
a
heating
cycle,
one
tap
on
@
pad
cancels
the
selected
program.
You
‘can
press
+20sec
pad
one
or
more
times
in
order
to
add
the
cooking
time
by
20
seconds.
But
you
can
not
exceed
the
maximum
time
per
power
level
allowed
for
power
level
selected.
*
When
you
first
plug
in
the
power
cord,
the
oven
beeps
once
and
all
the
indicators
show
for
5
sec
in
the
display
window.
*
When
heating
cycle
is
completed
and
you
open
the
door,
the
oven
lamp
automatically
turns
on
and
goes
off
1
min
later.
*
When
you
open
the
door
whilst
in
a
heating
cycle,
the
oven
stops
operating
and
the
oven
lamp
automatically
turns
on
for
1
min
and
goes
off
1
min
later.
If
you
leave
the
oven
door
open
for
more
than
1
min,
the
oven
beeps
once
every
minute
and
after
5
min
the
power
source
check
indicator
‘ON’
appears
in
the
display
window.

3-3 Operation Guide (CM1929/CM1629/CM1329)
Multi-stage cooking
1. Select the desired power level by pressing the POWER LEVEL Selector pad or DEFROST pad.
Result: The selected power level will be displayed in the display window.
2. Set the desired heating time by pressing the NUMBER pads.
Result: The selected time is displayed in the display window.
ON fall |
*The maximum time according to each cooking power level can be referred to in the title “Power Levels ans
Time Variations”. The NUMBER pads will not operate or respond when you press a cooking time
exceeding the maximum value. It is not possible to set a cooking time for longer than the maximum time
allowed on the chosen program. It is advisable to press CANCEL and to enter a new power level and
cooking time.
3. Repeat steps 1 and 2 for Il or Ill stage memory programming.
4, Press oy button:
Result : The oven lamp and cooling fan will be turned on. The oven will automatically start heating
according to pre-programed cooking time and power level.(I stage @ Il stage « Ill stage).
The time on digital display will count down.
[ESF
*You can not set up the same POWER LEVEL or DEFROST.
* It operates as setting up sequence.

3-3
Operation
Guide
(CM1929/CM1629/CM1329)
Using the Defrost Feature
NOTE
:
When
the
oven
was
operating
for
longer
than
25
min
under
Defrosting
cycle,
you
can
NOT
change
the
power
level
from
Defrosting
to
Heating(Cooking/Reheating)
mode.
NOTE
:
The
oven
is
designed
not
to
work
when
power
level
is
set
to
‘0’
mode
between
the
heating
mode
and
the
defrosting
mode.
* Use only containers that are microwave-safe.
. Open the door.
. Place the frozen food in the centre of the plate tray.
. Close the door.
.
Press
the
Defrost
selector
pad
to
set
DEFROST
HIGH
($$)
or
DEFROST
LOW
(#)
as
you
wish.
Result
:
The
selected
DEFROST
indicator
appears
in
the
display.
- 7
: 7}
AWM
5. Press the Number pads to set the defrosting time. (Max. 50 min)
ob:Ag I
Ueulll
ON $%
6. Press <j button.
Result : Defrosting begins.
NOTE
:
It
is
not
possible
to
set
a
defrosting
time
for
longer
than
50min.
The
defrost
indicator
will
flash
and
it
is
advisable
to
press
CANCEL
and
enter
a
new
defrost
level
and
time.
Repeat Feature
You
can
repeat
the
previous
cooking
setting
(regardless
of
manual
or
automatic
memory
heating)
by
pressing
the
START
button.
The
oven
starts
with
exactly
the
same
heating
time
and
power
level
that
were used in the last operation.
NOTE
:
Repeat
feature
does
not
support
for
+20sec
pad.
The
repeat
feature
will
be
cancelled
once
the
power
source
is
cut
off.
Using +20sec Pad
This is a ONE TOUCH COOK pad.
By
touching
the
+20sec
pad
once,
you
can
start
heating
instantly.
You
can
increase
the
cooking
time
by
pressing
the
+20sec
pad
while
heating
is
being
done.
A
cooking
time
increases
by
20
seconds
at
each
press
on
+20sec
pad.
But
it
can
not
exceed
the
maximum
time.
Like
traditional
cooking,
you
may
find
that,
depending
on
the
food’s
characteristics
or
your
tastes,
you
have
to
adjust
the
cooking
times
slightly.
Before
operating
the
oven,
times
can
be
increased/decreased
using
either
the
time
pads
or
+20sec
button.
During
the
operating,
time
may
only
be
added
by
using
the
+20sec
button.
- 10-

3-3 Operation Guide (CM1929/CM1629/CM1329)
One-stage
1. Hold down PROGRAM LOCK(©) and then press PROGRAM ( P ) pad. Hold together for 2 sec.
* Be sure to press the pads firmly.
Result : PROG indicator appears in the digital display.
PROG ‘ J
e
ON
2. Press appropriate NUMBER pad for the desired memory number.
Result : Selected memory program code appears below the PROGRAM indicator.
PROG ; [
ON
3. Select power level by pressing the POWER LEVEL pad or DEFROST pad.
Result : Default power level HIGH appears in the display at first press of the POWER LEVEL pad.
*Press the POWER LEVEL pad or DEFROST pad one or more times until you get the desired power level.
4. Press NUMBER pads to set the cooking time.
* The maximum time according to each cooking power level can be referred to in the title “Power Levels
and Time Variations” . The NUMBER pads will not operate or respond when you press a cooking time
exceeding the maximum value. It is not possible to set a cooking time for longer than the maximum time
allowed on the chosen program. It is advisable to press CANCEL and to enter a new power level and
cooking time.
5. Hold down PROGRAM LOCK( CO ) and then press PROGRAM( P ) pad. Hold together for 2 sec once again.
Result : PROG indicator and memory number indicator blink 3 times in the digital display with a beep sound.
And then the display goes blank.
Caution : Be sure to press the pads firmly in the right position.
6. When you want to program more, repeat the procedures above again.
* Memory programs are available up to 30 items.
Make sure the unit is properly programmed. After programming is finished, ail you have to do for memory
cooking is to press the NUMBER pad. Then the selected memory program automatically starts cooking.
~1i-

3-3
Operation
Guide
(CM1929/CM1629/CM1329)
Multi-stage
1.
Hold
down
PROGRAM
LOCK((Q)
and
then
press
PROGRAM
P
)
pad.
Hold
together
for
2
sec.
*
Be
sure
to
press
the
pads
firmly.
“Result : PROG indicator appears in the digital display.
PROG ‘6 I
ON
2. Press appropriate NUMBER pad for the desired memory number.
Result
:
Selected
memory
program
code
appears
below
the
PROGRAM
indicator.
PROG - I
y °
ON
3.
Select
power
level
by
pressing
the
POWER
LEVEL
pad
or
DEFROST
pad.
*
Press
the
POWER
LEVEL
pad
and
DEFROST
pad
one
or
more
times
until
you
get
the
desired
power
level.
PROG
i:
ON we
4. Press NUMBER pads to set the cooking time.
*
The
maximum
time
according
to
each
cooking
power
level
can
be
referred
to
in
the
title
“Power
Levels
and
Time
Variations”
on
page
6.
The
NUMBER
pads
will
not
operate
or
respond
when
you
press
a
cooking
time
exceeding
the
maximum
value.
It
is
not
possible
to
set
a
cooking
time
for
longer
than
the
maximum
time
allowed
on
the
chosen
program.
It
is
advisable
to
press
CANCEL
and
to
enter
a
new
power
level
and
cooking
time.
5. Repeat steps 3 and 4 for Il or Ill stage memory programming.
6.
Hold
down
PROGRAM
LOCK(
(Q)
)
and
then
press
PROGRAM(
P
)
pad.
Hold
together
for
2
sec
once again.
Result
:
PROG
indicator
and
memory
number
indicator
blink
3
times
in
the
digital
display
with
a
beep
sound. And then the display goes blank.
Caution:
Be
sure
to
press
the
pads
firmly
in
the
right
position.
7.
When
you
want
to
program
more,
repeat
the
procedures
above
again.
*
Memory
programs
are
available
up
to
30
items.
Make
sure
the
unit
is
properly
programmed.
After
programming
is
finished,
all
you
have
to
do
for
memory
cooking
is
to
press
the
NUMBER
pad.
Then
the
selected
memory
program
automatically
starts
cooking.
— You can not set up the same POWER LEVEL or DEFROST.
— It operates as setting up sequence.
-12-

3-3
Operation
Guide
(CM1929/CM1629/CIM1
329)
How
to
Operate
Memory
Cooking
After
having
finished
memory
programming,
just
press
the
NUMBER
pad
of
the
memory
number
you
want
to
select.
The
oven
will
automatically
start
heating
according
to
the
pre-programmed
cooking
time
and
power
level
after
a
short
delay
(5
sec).
1.
Make
sure
the
oven
iS
plugged
into
a
Properly
earthed
electrical
outlet
and
‘ON’
appears
in
the
display
window.
2.
Open
the
door.
The
oven
lamp
will
be
turned
on.
3.
Put
the
food
into
a
Suitable
container,
place
it
in
the
centre
of
the
oven
and
then
close
the
door
securely.
Result
:
The
oven
lamp
will
go
off,
4.
Press
NUMBER
pad.
Result
:
After
2
seconds,
the
selected
memory
program
automatically
starts
heating.
Stopping
the
Cooking
You
can
stop
cooking
at
any
time
so
that
you
can:
*
Check
the
food
*
Turn
the
food
over
or
Stir
it
*
Leave
it
to
stand
To
stop
the
cooking;
Temporarily:
Open
the
door
or
press
pad
once.
Result
:
Cooking
stops.
To
resume
Cooking,
close
the
door
and
press
again.
*
Completely
:
Press
the
pad
twice.
Result
:
The
cooking
settings
are
cancelled.
If
you
want
to
cancel
any
cooking
settings
before
Starting
cooking,
simply
press
CANCEL
pad
once.
Power
Levels
and
Time
Variations
(CM1919/1
929/CM1619/1
629/CM1319/1329)
The
power
level
function
enables
you
to
adapt
the
amount
of
energy
dissipated
and
thus
the
time
required
to
cook
or
reheat
your
food,
according
to
its
type
and
quantity.
You
can
choose
between
the
power
levels
below.
Power
Level
Percentage
100%
Power
Level
LOW
DEFROST

4. Disassembly and Reassembly
4-1 Replacement of Magnetron
Remove the magnetron including the shield case,
permanent magnet, choke coils and capacitor (all
of
which
are
contained
in
one
assembly).
Duct-MGT-L
1. Remove the outer panel.
NOTE : Before servicing, make sure to discharge
electric charge remaining on the high
voltage capacitors or wait for more than
5 min.
2. Remove the back cover.
3. Disconnect all lead wires from the magnetron.
4. Remove screws securing the duct-MGT and
duct-fan.
5. Remove the nut-flanges securing the
magnetron by using a box wrench.
6. Take out the magnetron very carefully.
NOTE1: When removing the magnetron, make
sure that its antenna does not hit any
adjacent parts, or it may be damaged.
NOTE2: When replacing the magnetron, be
sure to remount the magnetron gasket
in the correct position and make sure
the gasket is in good condition.
(See page 19 for adjustment
instructions.)
Nut-Flange
Duct-Fan
4-2 Replacement of High Voltage Transformer
1. Discharge the high voltage capacitor.
2. Disconnect all the leads. :
3. Remove the mounting bolts securing the HVT.
4. Reconnect the leads correctly and firmly.
H. V. Trans
- 14 -
4 Mounting Bolts

4-3 Replacement of Door Assembly
4-3-1 Removal of Door Assembly
NOTE : Be sure to wear gloves when you disassemble or assemble the parts.
1. Remove hex bolts securing the upper hinge and lower hinge. Then remove the door assembly.
2. Insert the flat screwdriver or thin metal plate into the gap between the door-E and door-C to remove
Door-C from the door assembly. Se eG
. Remove 2 screws securing the Door-Handle.
. Unbend the 6 metal tabs around the trim of Decoration Door Cover.
. Remove 3 screws securing the Door-E Assy.
. Remove upper hinge and lower hinge.
. Remove Decoration Door, Screen-B, Key-Door, Spring-Key, Pin-Key as needed.
NO OF B® ©
4-3-2 Removal of Door Handle
1. Remove hex bolts securing the upper hinge and lower hinge. Then remove the door assembly.
2. Insert the flat screwdriver or thin metal plate into the gap between the door-E and door-C to
remove Door-C from the door assembly.
NOTE : Be careful when handling Door-C as is fragile.
NOTE : The thickness of the flat screwdriver or thin metal plate inserted into the gap should be
0.5mm _or less.
3. Remove 2 screws securing the Door Handle to the Door-E Assy.
4, Unbend the 2 metal tabs at both ends of the Door Handle to remove the Door Handle Cover
from the Door Handle.
Door C
Decoration Door Cover : * 2 screws securing
Door Handle
Lower Hinge #__ Key-Door
Spring-Key Pin-Key
4-3-3 Reassembly Test
After replacement of the defective component parts of the door, reassemble it and follow the
instructions below for proper installation and adjustment so as to prevent an excessive microwave
leakage.
1. When mounting the door to the oven, be sure to adjust the door parallel to the bottom line of
the oven face plate by moving the upper hinge and lower hinge in the. direction necessary
for proper alignment.
2. Adjust so that the door has no play between the inner door surface and oven front surface.
lf the door assembly is not mounted properly, microwave energy may leak from the space
between the door and oven.
3. Do the microwave leakage test.
- 15-

4-4 Replacement of Fuse and H.V.Fuse
—
. Disconnect the oven from the. power source.
. Remove defective fuse from Noise filter.
3. When replacing the fuse, be sure fo use an
exact replacement part. If new fuse blows out
again after replacement, check the primary
interlock switch, door sensing switch and
interlock monitor switch.
4. When the above three switches operate
properly, check if any other part such as the
control circuit board, fan motor or high voltage
transformer is defective.
Nw
H.V.FUSE
4-5
Replacement
of
Drive
Motor
&
Ass’y
Stirrer
4-5-1 Replacement of Assy Stirrer
—
. Remove a screw securing the drive motor.
2. Open the door.
3. Hold side stoppers of ceiling cover (Ass’y Stirrer
Cover) with both hands and pull them in and down.
4. Take the ceiling cover out of the oven cavity.
5. Remove plastic clips securing the Ass’y Stirrer.
Caution:
When
removing
the
Assy
Stirrer
Cover,
be
sure
to
be
extremely
careful
about
the
exposed
inside
components
on
the
top
of
the
oven
cavity.
If any
of
them
are
deformed,
abnormal
symptom
can
happen
such
as
arcing
or
sparks
during
operation.
Screws
To remove Ass’y Stirrer Cover: Hold
side stoppers of ceiling cover with both
hands and pull them in and down.
4-5-2 Replacement of Drive Motor
. Remove outer panel and back-cover.
. Disconnect all the lead wires from the drive motor.
. Remove a screw securing the drive motor.
. When replacing the drive motor, be sure to
remount it in the correct position with the coupler.
. Connect all the leads to the drive motor.
. Screw the drive motor to the bracket motor with
a screw driver.
ON =
oO oO

4-6 Replacement of Control Box Assy and P.C.Board
ae 6-1 Removal of Control Box Assembly
. Be sure to discharge any static electric charge built up on nyOur body and avoid touching the
touch control circuitry.
. Remove 3 screws securing the Control Box Ass’y to the oven cavity.
. Disconnect all the lead wires, connectors and ground taping (CM1929/1629/1329) from the main
control circuit board (PCB1).
. Lift up the FPC connector hooks about 5mm upward which connects to the main conirol
circuit board(PCB1) from the tail of switch membrane of the control box assembly.(CM1929/1629/1329)
. Remove a screw securing the tapped taping to PCB1. (CM1929/1629/1329)
. Remove Control Box Ass’y.
To replace Digitron, remove 2 screws securing the PCB4.
. To replace Start Button Circuitry, remove 3 screws securing the PCB3. (CM1929/1629/1329)
. Unbend the metal tabs holding the Panel -Base to Control Box body.
Ww
~
OMONOA
4-6-2 Removal of main P.C.Board
1. Remove Control Box Assembly by following the steps 1~ 5 at left.
2. Remove 4 screws securing the main P.C.Board to the bracket P.C.Board.
NOTE : When handling the the touch control circuitry, be most careful to avoid damage.
Main P.C.Board (PCB1)
Control Box Ass’y Wire Harness-C
<CM1919/1619/1319> Digitron(PCB4)
Wire
Harness-B
Panel-Base
Button-Select
Buiton-Start
Main P.C.Board
(PCB1)
Wire Harness-C
GonitralB Ass’ Digitron(PCB4)
ontro OX ASSY
<CM1929/1629/1329>
Window-Display
* Wire Harness-F
Cover Panel
coverPane—{]
PCB3

4-7 Replacement of Fan Motor
—
. Remove the outer panel and back-cover.
2. Discharge the high voltage capacitor.
3. Remove all the lead wires from Magnetron
and High Voltage Capacitor.
4. Remove 2 screws securing the duct fan.
5. Remove 2 screws securing the Supporter-
Fan Mount.
6. Lift the Ventilation Motor Ass’y slightly left
upward and pull it out.
7. Remove lead wires and connectors.
8. Remove a screw securing the C-Film to
the Supporter-Fan-Mount.
9. Turn the fan motor ass’y over so that the
bracket side is up.
10. Remove 2 screws securing the Ventilation Motor.
4-8 Replacement of Tray
. Open the door.
2. Remove the tray by inserting a thin metal tool into
the gap between the oven wall and the tray silicon cover.
3. Insert the new tray by tilting it across the oven cavity.
4. Firstly fix the front part (refers to the place where
the silicon cover is thinner than the other 3 edges)
and then place the backward part carefully and firmly.
NOTE : Be careful when you handle the tray since it
is fragile.
—
4-9 Replacement of Lamp
NOTE : You don’t need to remove the outer panel
or other parts in order to replace a lamp.
1. Remove a screw securing the lamp cover.
2. Remove the lamp by rotating it clockwise.
3.
nas
a
new
lamp
by
rotating
it
counter-
Lamp
Holder
ise.
NOTE : If it is necessary to replace the lamp
holder, you can disconnect lead wires by
pushing down on the hole of lead wires Outer Panel
using a long pointed tool.
eto Has