Samsung CE2927 User manual

1. Precaution
1-1 Safety precautions
1. All repairs should be done in accordance
with the procedures described in this
manual. This product complies with
Federal Performance Standard 21 CFR
Subchapter J (DHHS).
2. Microwave emission check should be
performed to prior to servicing if the oven is
operative.
3. 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 immediatly.
4. Notify the Central Service Center if the
microwave leakage exceeds 5 mW/cm2
5. Check all grounds.
6. Do not power the MWO from a "2-prong"
AC cord. Be sure that all of the built-in
protective devices are replaced. Restore any
missing protective shields.
7. When reinstalling the chassis and its
assemblies, be sure to restore all protective
devices, including: nonmetallic control
knobs and compartment covers.
8. 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.
9. Inform the manufacturer of any oven found
to have emmission in excess of 5 mW/cm2,
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.
CENTRAL SERVICE CENTER
10. Service technicians should remove their
watches while repairing an MWO.
11. 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.
12. 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:
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. 10.Always unplug
the unit's AC power cord from the AC
power source before attempting to
remove or reinstall any component or
assembly.
14. 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.
15. 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.
16. 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.
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.
- 2 -
()

17.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.
18. Components that are critical for safety are
indicated in the circuit diagram by
shading, or .
19. Use replacement components that have the
same ratings, especially for flame resistance
and dielectric strength specifications. A
replacement part that does not have the
same safetycharacteristics as the original
might create shock, fire or other hazards.
1. High Voltage Warning
Do not attempt to measureany of the high
voltages--this includes the filament voltage
of the magnetron. High voltage is present
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.
Pretaution
1-2 Special Servicing Precautions (Continued)
1-3 Special High Vltage Precautions
Fig. 1-1. Discharging the High Voltage Capacitor
- 3 -

2-1High Voltage Capacitor
2. Alignment and Adjustments
2-2 High Vltage Diode
2-3 Main Relay and Power Control Relay
2-4 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch
1. Check continuity of the capacitor with the meter set at the highest resistance scale.
2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9MW .
3. A shorted capacitor will show continuous continuity.
4. An open capacitor will show constant 9M W .
5. Resistance between each terminal and chassis should read infinite.
1. Isolate the diode from the circuit by disconnecting its leads.
2. With the ohm-meter set at the highest resistance scale, measure across the diode terminals. Reverse the
meter leads and read the resistance. A meter with 6V, 9V or higher voltage batteries should be used to
check the front-to back resistance of the diode (otherwise an infinite resistance may be read in both
directions). The resistance of a normal diode will be infinite in one direction and several hundred K Win
the other direction.
1. When mounting Primary switch and Interlock
Monitor switch to Latch Body, consult the figure.
2. No specific adjustment during installation of
Primary switch and Monitor switch to the latch
body is necessary.
3. When mounting the Latch Body to the oven
assembly, adjust the Latch Body by moving it so
that the oven door will not have any play in it.
Check for play in the door by pulling the door
assembly. Make sure that the latch keys move
smoothly after adjustment is completed.
Completely tighten the screws holding the Latch
Body to the oven assembly.
4. Reconnect to Monitor switch and check the
continuity of the monitor circuit and all latch
switches again by following the components test
procedures.
5. Confirm that the gap between the switch
housing and the switch actuator is no more than
0.5mm when door is closed.
1. The relays are located on the PCB Ass'y. Isolate them from the main circuit by disconnecting the leads.
2. Operate the microwave oven with a water load in the oven. Set the power level set to high.
3. Check continuity between terminals of the relays after the start pad is pressed.
Precaution
Door Open Door Closed
Primary switch
¥0
Monitor switch (COM-NC)
0¥
Monitor switch (COM-NO)
¥0
Door Sensing S/W
¥0
Primary Interlock Switch
Lever Door(B)
Body Latch
Door Sensing
Switch
Interlock
Monitor
Switch
- 4 -
For continued protection against radiation hazard, replace parts in accordance with the wiring diagram and be sure to use the
correct part number for the following switches: Primary and secondary interlock switches, and the interlock monitor switch
(replace all together). Then follow the adjustment procedures below. After repair and adjustment, be sure to check the continuity
of all interlock switches and the interlock monitor switch.

3. Exploded Views and Parts List
Exploded Views (Main)
MM01
MM52
MM29 MM30
MM32
MM31
MM27
MM18
MM19
MM20
MM06
MM05MM17
MM08
MM09
MM50
MM10
MM67
MM61
MM68
MM60
MM69
MM57
MM72
MM07
MM03
MM55
MM59
MM25
MM21
MM71
MM64
MM28 MM14
MM22
MM171
MM62
MM63
MM172
- 5 -
MM16
MM65
MB01
MB03
MB03
MB02
MB05
MB04
NC
NO
COM

Main Parts
- 6 -
CE2927/XEF
No. Part Code Description Specification Q'ty Remarks
MB01 DE93-20020E ASSY BODY LATCH -,HANDLE,PP,FB44N,-,- 1
MB02 3405-000175 SWITCH-MICRO 250V,15A,200gf,SPST-NO 1
MB03 3405-000178 SWITCH-MICRO 250V,15A,200gf,SPST-NO 2
MB04 DE66-90054C LEVER-SWITCH PP,-,-,-,-,-,-,HANDLE,FB44N 1
MB05 DE66-40021D LATCH-BODY PP,HANDLE,FB44N 1
MM01 DE70-30001A PANEL-OUTER SECC,T0.6,360,1128,EPOXY-COATI 1
MM03 DE39-00166A WIRE HARNESS-A 230V50Hz,CE2927/XEF,-,-,-,-,-,-,-,-,-,-,- 1
MM05 DE96-00010A ASSY NOISE FILTER SN-3WED,250V10A,3W NO-INRUSH TC,-,-,
-
1
MM06 DE96-00070A ASSY-MOTOR FAN SMF-2N2EA1,230V50Hz,2420RPM,2N2,9m
m
1
MM06 DE31-10185A MOTOR-FAN SMF-3RDEA1,230V50Hz,-,-,2450rp 1
MM07 DE39-20058K ASSY POWER CORD KKP-4819D,-,-,-,-,-,- 1
MM08 OM75PH(31)E
S
ASSY-MAGNETRON OM75PH(31)ESS 1
MM09 DE71-60458A COVER-AIR PP(TB53),78G,-,-,WHT,3RD-1.0/1.3 MW589
6
1
MM10 4713-001031 LAMP-INCANDESCEN
T
230V,173mA,40W,ORG,-,-,25x69mm 1
MM14 DE26-00008A TRANS-H.V SHV-293EC,230V50HZ,2230V/3.15V,-,DY 1
MM16 DE71-00015A COVER-CEILING -,T0.3,W114.2,L121.5,-,CE2933 1
MM17 DE47-20009A THERMOSTAT PW2N-520PB,160/60,250V/7.5A,H, 1 MGT
MM17
2
DE47-00002A THERMOSTAT PW2N,-,-,100,110,-,-,-,- 1 GRILL TC
O
MM17
3
DE47-00003A THERMOSTAT PW2N,-,-,-,120/110,-,-,-,187,30.0 1 CVT TCO
MM18 DE74-20015B TRAY-COOKING GLASS,T6.0,PI318,1050G,MW5630T 1
MM19 DE92-90189U
A
SSY-GUIDE ROLLE
R
1.0CUFT(PPS)15.5,-,-,-,-,- 1
MM20 DE67-60081A COUPLER PPS,-,-,-,3RD-1.0/1.3,-,-,- 1
MM21 DE39-40409A WIRE HARNESS-E 230V50HZ,M9G45,CTW,-,-,- 1
MM22 DE31-10154A MOTOR-SYNCHRON
O
M2HJ49ZR02,ST-16,50/60HZ,- 1
MM25 DE65-20014A CABLE CLAMP DA-6N,NY-66,-,-,-,-,-,- 1 PCORD
MM27 DE61-40066A FOOT PP,BLK,-,-,3RD-W,- 2
MM28 DE80-10001G BASE-PLATE SGCC,T0.8,W345,L565,3RD,- 1
MM29 2501-001107 C-OIL 1.1uF,2.1KV,BK,54x35x85,20mm 1
MM30 DE61-50106A BRACKET-HVC SECC,T0.8,W31,L125.8,-,-,- 1
MM31 DE91-70063A ASSY-HVD V2M6,PI9.0,0.05MT,-,- 1
MM32 DE91-70061A ASSY-H.V.FUSE THV060T-0800-H,5KV/0.80A,WHT 1
MM33 DE26-00029A TRANS-L.V SLV-1733EN,220V60Hz,-,AC17V/7V,-,-,- 1 LVT1
MM50 DE27-10020C COIL-CHOKE TC-104,0.9UH*2,-,L31*W20*H32,-,ABS,AC2
5
1
MM52 DE63-90035G CUSHION-RUBBER DFA20,T2,W190,L100,BLK,-,-,- 1
MM55 3601-000448 FUSE-CARTRIDGE 250V,10A,SLOW-BLOW,CERAMIC,6.35x31.
8
1
MM57 DE61-50027B BRACKET-HEATER SECC,T1.0,W51,L55,CE945GF,-,- 1
MM59 DE71-60453A COVER-BACK SECC,T0.5,W146,L404,-,3RD-1.0, 1
MM60 DE63-20017A GASKET-HEATER BRASS,T1.5,OD30.5,ID22.5,-,-,- 1
MM61 DE47-00001A HEATER -,230V,1250W,-,-,SHG-2933E,-,-,- 1
MM62 DE61-70060A SPRING-PLATE SK-5,T0.5,-,-,-,-,- 1
MM63 DE61-30006A SUPPORTER-HEATE
R
ALUMINA,5G,2ND-W/P,-,-,-,- 1
MM64 DE74-70081A RACK-WIRE HSWR,PI3,W268,H110,-,MW5584W,- 1
MM65 DE62-20064A DUCT-AIR SECC1-P T0.5,-,-,-,-,3RD-1.0,- 1
MM67 DE61-50575A BRACKET-UPPER SECC,T0.5,-,-,-,3RD,- 1
MM68 DE60-40009B WASHER-TEFLON SLOT,ID22.2,OD28,T1.2,TEFLON,- 1
MM69 DE61-50021A BRACKET-FLANGE SECC1,T0.8,32,32,-,-,- 1
MM71 DE61-50490A BRACKET-TCO SECC1,T0.6,34,58,-,-,- 1
MM72 DE61-50025A BRACKET-EARTH BSS2-A,T1.0,CE745G,-,-,-,- 1
Exploded Views and Parts List

MD01
MC01
MD06
MD05
MC06
MC03
MC23 MC11
MC09
MC24
MC25
CUSHION
MC14
MC26
MC13
MD14 MD09
MD04
MD03
MD08
MD09
MD02
MD10
MD07
MC07
MD191
Exploded Views and Parts List
Exploded Views (Control & Door)
Parts List
- 7 -
CE2927/XEF
No. Part Code Description Specification Q'ty
MC01 DE94-00304D ASSY CONTROL-BOX -,CE2927/XEF,P/WHT,- 1
MC03 DE72-00083B CONTROL-PANEL -,CE2927,-,-,-,-,P-WHT,- 1
MC06 DE64-00095A WINDOW-DISPLAY SAN,-,M1727/M1927,- 1
MC09 DE64-00097B KNOB-POWER CE2727/CE2927,ABS,-,-,POWER,-,-,- 1
MC11 DE64-00096A KNOB-TIMER ABS,-,-,M1727/M1927,-,-,-,-,- 1
MC12 3501-001062 RELAY-POWER 24VDC,523.2mW,16A,1FormA,15mS, 1 RY01
MC12 3501-001068 RELAY-POWER 24Vdc,523mW,16A,1FormA,15mS,10 1 RY04
MC13 DE94-00303B ASSY CONTROL-PANEL -,CE2927,P/WHT,- 1
MC14 DE66-00009A BUTTON-SELECT(A) ABS,-,D10,WHT,3G 1
MC23 DE64-00100A BUTTON-CLOCK ABS,-,M1727/M1927,CLOCK 1
MC24 DE64-00113A KNOB-CAP ABS,C-BLUE,-,M1727/M1927,-,-,-,-,- 1
MC25 DE39-00059A WIRE HARNESS-SWITCH -,230V50HZ,T/TABLE S/W,-,M1914,EUR1
MC26 DE97-00165B ASSY-KNOB POWER CE2727,POSERKJEONG,WHT+BLU,- 1
MD01 DE94-00305B ASSY DOOR CE2927,P/WHT,- 1
MD02 DE64-00098B DOOR-A ABS,-,-,-,P-WHT,CE2927/XEF,-,-,- 1
MD03 DE63-00018B SCREEN-DOOR SAN,-,-,-,SMOG,CE2927/XEF,- 1
MD04 DE94-00075B ASSY DOOR-E 3RD-1.0,BLK,COATING,-,-,-,- 1
MD05 DE01-00118B FILM-DOOR -,T0.15,W295,L185,-,-,CE2933 1
MD06 DE64-40012A DOOR-C RESIN-PP(TB53),T2.0,CE945GF,BL 1
MD07 DE61-70126A SPRING-KEY 0.8,0,36,6,BLUING,-,- 1
MD08 DE61-80002A HINGE-UPPER SCP1,T2.3,26,77,ZPC3,WHT,CE945 1
MD09 DE61-80003A HINGE-LOWER SCP1,T2.3,26,77,ZPC3,WHT,CE945 1
MD10 DE64-00028A DOOR-KEY POM,BLK,CE2974,- 1
MD14 DE64-00099A HANDLE-DOOR ABS,-,-,-,SILVER,M1727/M1927,-,- 1
MD19 DE64-00093A HANDLE-RING(A) ABS(HR0370),-,-,-,D-GRY(G63328),POS 1
MD191
DE64-00094A HANDLE-RING(B) ABS(HR0370),-,-,-,D-GRY(G63328),POS 1

Standard Parts List
- 8 -
CE2927/XEF
Part Code Description Specification Q't
y
Remarks
DE60-10012A SCREW-TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH 1 N F EA
DE60-10012A SCREW-TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH 1 P C EA
DE60-10018A
SCREW-ASSY MACHINE PH,M4X0.7P,8,MSWR10,SN1,WS,-,- 2 B/EATH
DE60-10024A SCREW-PH PH,+,M4,L8,MSWR10,ZPC3,-,-,-,- 2 B/HEAT
DE60-10045A SCREW-TAP PH PH,M3,L6,FEFZY,-,-,-,-,-,- 1 GRILL TCO
DE60-10045A SCREW-TAP PH PH,M3,L6,FEFZY,-,-,-,-,-,- 1 MG TCO
DE60-10069A SCREW-TAP TH TH,M4,L10,FRFZY,-,-,-,-,-,- 3 B/UPPE
DE60-10072A SCREW-TAP TH TH,M4,L16,FEFZY,2-SLOT,-,-,-,- 1 CB CMP
DE60-10080B SCREW-WASHER PH,PI5,L10,SWRCH18A,ZP2,2S,-,- 4 MGT
DE60-10080B SCREW-WASHER PH,PI5,L10,SWRCH18A,ZP2,2S,-,- 4 TNS HV
DE60-10082H SCREW-A 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2 B PLTE
DE60-10082H SCREW-A 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2 CN BOX
DE60-10082H SCREW-A 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 1 CV/AIR
DE60-10082H SCREW-A 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2 LATCH
DE60-10082H SCREW-A 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 1 MO/FAN
DE60-10082H SCREW-A 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 5 PN OUT
DE60-10098A
SCREW-ASSY TAP TITE PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W 1 CV TCO
DE60-10098A
SCREW-ASSY TAP TITE PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W 2 M/DRIV
DE60-10122A SCREW-TAP TH TAP,TH,2-4X8,FE,FN,-,-,-,-,- 2 C CEIL
DE60-10195A SCREW-STAR POLE TH,*,2,4,12,SWCH18A,ZNC,-,-,- 2 CO BACK
DE60-20063A BOLT-FLANGE M4,10,ZPC3,YEL,MSWR,-,-,-,- 2 HI LOW
DE60-20063A BOLT-FLANGE M4,10,ZPC3,YEL,MSWR,-,-,-,- 2 HI UPP
DE60-10045A SCREW-TAP PH PH,M3,L6,FEFZY,-,-,-,-,-,- 1
DE60-10088A SCREW-TAP PH PH,M3,L8,FEFZY,PLAIN,-,-,-,-,- 5 PCB
DE60-10088A SCREW-TAP PH PH,M3,L8,FEFZY,PLAIN,-,-,-,-,- 2 T T S/W
DE60-10082J SCREW-TAPPING TH,2S-4X8,MSWR3,ZPC,YEL,WS,-,- 1 HVC
DE60-10012A SCREW-TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH 1
DE60-10069A SCREW-TAP TH TH,M4,L10,FRFZY,-,-,-,-,-,- 2 HANDLE+DOOR
Exploded Views and Parts List

4. P.C.B Diagrams
- 9 -