Component Testing Information - LG DLEX8100V Service Manual

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COMPONENT TESTING INFORMATION

COMPONENT TESTING INFORMATION
CAUTION
! When checking components, turn the power off and discharge voltage.
Component
1. Thermal cut off
• Check Top Marking:
N140
2. Hi limit Thermostat
(Auto reset)
3. Outlet Thermostat
( Auto reset)
• Check Top Marking:
N85
4. LED Lamp
5. Door switch
6. Idler switch
Test Procedure
Measure resistance of terminal
to terminal
Open at 284 ± 41°F
(140 ± 5°C)
Auto reset -31°F (-35°C)
Same shape as outlet thermostat.
Measure resistance of terminal
to terminal
Open at 257 ± 9°F
(125 ± 5°C)
Close at 221 ± 9°F
(94 ± 7°C)
Measure resistance of terminal
to terminal
Open at 185 ± 41°F
(85 ± 5°C)
Close at 167 ± 41°F
(75 ± 5°C)
Same shape as thermal cut off.
Schematic:
Measure resistance of the
following terminal
1) Door open
Terminal: COM - NC (1-3)
Terminal: COM - NO (1-2)
2) Door closed
Terminal: COM - NC (1-3)
Terminal: COM - NO (1-2)
Measure resistance of the
following terminal:
COM - NC
Check result
If thermal fuse is open must
be replaced
Resistance value
Continuity (250°F
Resistance value
Resistance value < 5Ω
Resistance value
Resistance value < 5Ω
If the lamp is turned on
by connecting is normal.
Resistance value < 1Ω
Resistance value
Resistance value
Resistance value < 1Ω
1. Lever open
Resistance value < 1Ω
2. Lever push (close)
Resistance value
19
17
Remark
• Heater case-
Safety
∞
• Electric type
) < 1Ω
• Heater case -
Hi limit
∞
• Electric type
• Blow housing -
Safety
∞
• Electric type
It is not
measured by
multimeter
because V is
th
3.2V
∞
∞
∞