LG LMC1575ST Service Manual

5-17
(TROUBLE 4) Oven seems to be operating but little heat is produced in oven load.
CONDITION CHECK RESULT CAUSE REMEDY
Installed like Built – in.
(it locate with not enough
distance from wall.)
Abnormal.
Lower than 90% of rating
voltage.
Abnormal.
Normal.
Normal.
Normal.
Bad air flow make inverter
PCB overheated.
Main PCB reduce power
to protect inverter from
overheating.
Defective magnetron.
Decrease in power source
voltage with load.
Defective PCB assembly.
Reinstall.
Replace magnetron.
Suggest customer contact
local electric power utility
co. or qualified electrician.
Replace PCB assembly.
Check install Condition.
Measure the output
power.
Check the power source
voltage.
Check the inverter PCB
Output is low.
NOTE : Simple test of power output-conducted by heating one cup of water for 30 seconds if available.
Minimum 20˚C temperature rise is normal condition.

LG LMC1575ST Specifications

General

Style	counter top
Color	stainless steel
Total Capacity	1.5 cu. ft.
Convection	no
Power Levels	10
Sensor Cooking	yes
Quick Start	no
Timer	yes
Interior Light	yes
Microwave Power	1, 250 watts
Voltage	120 volts
Current	15a

Weight and Dimensions

Depth	17 inch
Height	12 13/100 inch
Width	21 41/100 inch