LG LMV1625W Service Manual page 28

COMPONENTS
TOUCH KEY
BOARD
TEST PROCEDURES
Measure the resistance between terminal
pins of connector KEY CONNECTOR.
NOTE:
When reconnecting the FPC connector,
make sure that the holes on the FPC
connector are properly engaged with hooks
on the plastic fastener.
MATRIX CIRCUIT FOR
TOUCH KEY BOARD
CONNECTOR(KEY CON)
(For detail matrix circuit of each model,
refer to page 5-2.)
FAN
HELP COOK POPCORN
HI/LO/OFF
LIGHT
CUSTOM
REHEAT POTATO
HI/LO/OFF SET
LESS CLOCK Ez On BEVERAGE
CUSTOM LIGHT
N.C PIZZA
COOK TIMER
T/TABLE STOP
START N.C
ON/OFF CLEAR
MORE N.C N.C N.C
Figure 27
TIME
COOK
AUTO
DEFROST
KITCHEN
TIMER
POWER
LEVEL
HOLD
WARM
N.C N.C N.C
7-17
RESULTS
When
Resistance touched
value
Less than More than
400 ohms 1 mega ohm
FPC CONNECTOR
Top
Figure 28
When not
touched
1
2
3
4
5
6
7
8
9
10
11
12
13