LG LSE3092ST Service Manual page 48

Components
Infinite switch
(Triple units):
RF switch
Triple type
Test procedures
7. When turn on/turn off the knob, position measure
the resistance between 4 to 4a.
4b J4
P1
4
4a 4a 4a 4a 4a
4a 4a 4a 4a
4a 4a 4a 4a 4a 4a
4a 4a 4a 4a 4a 4a 4a
P2
S2
S1
8. When turn on/turn off the knob, position measure
the resistance between J4 to4b.
4b J4
P1
4
4a
4a 4a 4a 4a 4a 4a
4a 4a 4a 4a 4a 4a
4a 4a 4a 4a 4a 4a
4a 4a 4a
P2
S2
S1
9. After check the single type, check the dual type
at the same procedure.
Infinite Switch Knob Position
OFF
LF
ON
Others are same as dual circuits
2
2
Results
J4-4b Infinite(open circuit)
J4-4b Continuity(short circuit)
4-11
Results