Component Test; Convection Motor - LG LUTG4519SN Service Manual

Before testing any components, perform the following checks:
NOTE:
1. The most common cause for control failure is corrosion on
connectors.
Therefore, disconnecting and reconnecting wires will be
necessary throughout test procedures
2. ALL units in the first few days of use should be checked for
mis-wiring or loose connections
1. All/tests/checks should be made with a VOM or DVM having a sensitivity
of 20,000 ohms per-volt DC, or greater.
2. Check all connections before replacing components, looking for broken
or loose wires, Failed terminals, or wires not pressed into connectors far
enough.
COMPONENTS

Convection Motor

1. Refer to page 3-9 for the servicing procedure
2. Measure the resistance

COMPONENT TEST

TEST PROCEDURE
(Multiple meter scale: R x 1)
3. Resistance checks must be made with power cord unplugged from
outlet, and with wiring harness or connectors disconnected.
• Disconnect power supply cord from the outlet before
servicing
• Replace all panels and parts before operating
• Reconnect all grounding devices after servicing
- Failure to do so can result in death or electrical shock
NOTE: Below Ω value were tested at room temperature
(77F/25°C)
Normal: Approximately
Hi RPM : 24.8 Ω ± 10%
Lo RPM : 30.1 Ω ± 10%
If not replace
Abnormal: Infinite (open)
-4-1-
WARNING
RESULTS
below 5Ω (shorted)