LG LSSE3029BD Service Manual page 47

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