LG D5988B, Руководство по обслуживанию, Страница: 14 / 42

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When checking the Component, be sure to turn the power off, and do voltage discharge sufficiently.
COMPONENT TESTING INFORMATION
5
!
CAUTION
Component Test Procedure Check result Remark
1. Thermal cut off
• Check Top Marking :
N130
Measure resistance of terminal
to terminal
Open at 266 ± 12°F
(130 ± 7°C)
Auto reset -31°F (-35°C)
Same shape as Outlet Thermostat.
If thermal fuse is open must
be replaced
Resistance value ∞
Continuity (250°F ) < 1Ω
• Heater case-
Safety
• Electric type
2. Hi limit Thermostat
(Auto reset)
Measure resistance of terminal
to terminal
Open at 257 ± 9°F
(125 ± 5°C)
Close at 221 ± 9°F
(105 ± 5°C)
Resistance value ∞
Resistance value < 5Ω
• Heater case -
Hi limit
• Electric type
3. Outlet Thermostat
( Auto reset)
• Check Top Marking :
N85
Measure resistance of terminal
to terminal
Open at 185 ± 9°F
(85 ± 5°C)
Close at 149 ± 9°F
(65 ± 5°C)
Same shape as Thermal cut off.
Resistance value ∞
Resistance value < 5Ω
• Blow housing -
Safety
• Electric type
4. Lamp holder Measure resistance of terminal
to terminal Resistance value :
80Ω ~ 100Ω
6. Idler switch Measure resistance of the
following terminal :
“COM - NC”
1. lever open
Resistance value < 1Ω
2. Lever push (close)
Resistance value ∞
5. Door switch Measure resistance of the
following terminal
1) Door switch knob : open
Terminal : “COM” - “NC” (1-3)
Terminal : “COM” - “NO” (1-2)
2) Door switch push : push
Terminal : “COM” - “NC” (1-3)
Terminal : “COM” - “NO” (1-2)
Resistance value < 1Ω
Resistance value ∞
Resistance value ∞
Resistance value < 1Ω
The state that
Knob is
pressed is
opposite to
Open
condition.