LG LMHM2017ST Service Manual

-24-
Turn on automatically
1
Repeat Door Open and close
more than three times.
Dose the product operate?
Is the product turn on
automatically without pushing
the start key?
Yes
No
Yes
Alternate with
explanation
(Refer to the
Note)
3
When door is closed, does
the oven lamp turn on?
Yes
No
Replace the
turntable Motor
Power Off
2
Is there any beep sound
in continuity test between
the ends of latch board?
- secondary switch
(Door should be closed.)
Yes
No
Adjust the
Primary latch
board
(Refer to 9-1,
9-2)
Power ON
4
When the door is opened, Is
the voltage of door sensing
part over 4V?
(Pin 1 to Pin 3 of CN4)
Yes
No
Replace the
PCB
(EBR64419604)
6
Is there any beep sound in
continuity test between the
ends of two Pin?
(Pin 1 of CN3 and Pin 5 of
CN1)
No
5
Is the voltage of both ends
of the D31over 8V?
No
Yes
Yes
Replace the
PCB
(EBR64419604)
Replace the
PCB
(EBR64419604)
PCB No
Problem

LG LMHM2017ST Specifications

General

Brand	LG
Model	LMHM2017ST
Category	Microwave Oven
Language	English