Samsung SMH1816 XAA Series Fast Track Troubleshooting page 4

Fill a 1000ml plastic room temperature container with cool tap water,
temperature of the water should be 55-65 degrees
Stir water with a thermometer and record the water temperature, remove
thermometer.
Place the container in the center of the lowest shelf or center of the
bottom of the microwave.
For units less than 1550 watts, operate the oven on high for exactly 63
seconds.
Using the thermometer, stir the water to check the temperature of the
water.
Subtract the starting temperature from the final temperature; this will be
the temperature rise.
NOTE: Check line voltage under load, lower line voltage will lower
the power output.
Procedure for measurement of microwave energy leakage
1. Pour 275±15cc of 20±5°C(68±9°F) water in a beaker which is
graduated to 600cc, and place the beaker in the center of the oven
2. Start to operate the oven and measure the leakage by using a mi-
crowave energy survey meter.
3. Set survey meter with dual ranges to 2,450MHz.
4. When measuring the leakage, always use the 2 inch spacer cone
with the probe. Hold the probe perpendicular to the cabinet door.
Place the spacer cone of the probe on the door and/or cabinet door
seam and move along the seam. The door viewing window and the
exhaust openings moving the probe in a clockwise
rate of 1 inch/sec. If the leakage testing of the cabinet door seam is
taken near a corner of the door, keep the probe perpendicular to
the areas making sure that the probe end at the base of the cone
does not get closer than 5 cm to any metal. If if gets closer than 5
cm, erroneous readings may result.
5. Measured leakage must be less than 4mW/cm2 after repair and
adjustment.
Maximum allowable leakage is 5mW/cm2. 4mW/cm2 is used to allow
for measurement and meter accuracy.
M/W Information
Specifications
High Voltage
Transformer
Motors
SMH1816
Microwave Cooking Wattage Test
M/W Power
M/W Weight
Primary low
Primary high
Secondary
Filament
Vent, at run
cap (checks
all windings)
TT Stirrer
Motors
Fan Motor
Temp Rise
direction at a
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.
1100
High Voltage Warning Do not attempt to
Watts
measure any of the high voltages --this in-
54.23 lbs
cludes the filament voltage of the magnetron.
High voltage is present during any cook cycle.
0.43Ω
Before touching any components or wiring,
0.39Ω
always unplug the oven and discharge the
125 high voltage capacitor
0.0Ω
WARNING: It is critical to route wires and
wire harness identical to the way they were,
100Ω
to prevent electromagnetic interference caus-
ing possible fault codes.
120Ω
45Ω
2/17/2012
Output Temp Rise
5 194
6 232
7 271
8 310
9 349
10 387
11 426
12 464
13 504
14 542
15 581
16 620
17 659
18 697
19 736
20 775
21 814
22 852
Safety precautions
Out-
put
23 891
24 930
25 969
26 1007
27 1046
28 1085
29 1124
30 1162
31 1201
32 1240
33 1279
34 1317
35 1356
36 1395
37 1434
38 1472
39 1511
40 1550
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