LG T710BH Service Manual - Page 17
Trouble In H-linearity
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5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK IC401 PIN 5, 6, 7 ? YES CHECK Q711~Q716? YES CHECK L703? YES TROUBLE IN C722, C723, C726, C729 NO TROUBLE IN IC401 (MICOM) NO TROUBLE IN Q711 ~ Q716 NO TROUBLE IN L703 Cs SIGNAL TABLE HORIZONTAL FREQUENCY(fH) Cs1 Cs2 Cs3 30K ~ 33.9K L L L 34K ~ 38.9K L H H 39K ~ 43.9K H L H 44K ~ 48.9K H L H 49K ~ 51.9K H H L 52K ~ 57.9K H H L 58K ~ 61.9K H H L 62K ~ 65.9K H H H 66K ~ 70K H H H - 17 -
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5. TROUBLE IN H-LINEARITY
UNBALANCED OF H-LIN.
CHECK
IC401
PIN 5, 6, 7 ?
CHECK
Q711~Q716?
CHECK
L703?
TROUBLE IN
IC401 (MICOM)
TROUBLE IN
Q711 ~ Q716
TROUBLE IN
L703
TROUBLE IN
C722, C723, C726, C729
NO
NO
NO
YES
YES
YES
Cs SIGNAL TABLE
HORIZONTAL
FREQUENCY(fH)
30K ~ 33.9K
34K ~ 38.9K
39K ~ 43.9K
44K ~ 48.9K
49K ~ 51.9K
52K ~ 57.9K
58K ~ 61.9K
62K ~ 65.9K
66K ~ 70K
Cs1
L
L
H
H
H
H
H
H
H
Cs3
L
H
H
H
L
L
L
H
H
Cs2
L
H
L
L
H
H
H
H
H