LG 42LB2R (CHASSIS:LP62E) Service Manual ▷ View online
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6. In the case of becomes unusual display from rear S-Video mode(main)
Check the input source.
Same as Block A.
Yes
No
Is video
input of the A/V
jack normal?(Check
R198, R199,
R2100)
Is video
input of the A/V
jack normal?(Check
R339, R341,
L310)
7. In the case of becomes unusual dispaly from rear AV mode(main)
Check the input source.
Same as Block A.
Yes
No
Is video input
of the A/V jack normal?
(Check R343)
8. In the case of becomes unusual display from side S-Video mode(main)
Check the input source.
Same as Block A.
Yes
No
Is video input
of the A/V jack normal?
(Check R102)
9. In the case of becomes unusual display from SCART 1 mode(main)
Check the input source.
Same as Block A.
Yes
No
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10. In the case of becomes unusual display from SCART 1_RGB mode(main)
Check the input source.
Same as Block A.
Yes
No
Is video
input of the A/V jack
normal?(Check L111,
L112, L106)
11. In the case of becomes unusual display from SCART 2 mode(main)
Check the input source.
Same as Block A.
Yes
No
Is video input
of the A/V jack normal?
(Check R115)
12. In the case of becomes unusual display from SCART 2_YC mode(main)
Check the input source.
Same as Block A.
Yes
No
Is video input
of the A/V jack normal?
(Check R115, R149)
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13. In case of becomes unusual display from RF mode(Sub)
Insert the cable well.
Yes
Yes
No
Check the power.
(Check L1004)
No
Change the IC(IC300).
No
check the power(L1103).
No
Change the Tuner.
No
Cable inserts well.
Change the IC(IC800).
Is video output
of the tuner normal? (Check
T200_Pin14)
Is the Tunner
Cable connected
well?
Is the Input
voltage(check pin8,
Pin6)
Yes
Yes
No
No
Is
video output
of CXA2069Q normal?
(Check R312, In case of
S-Video check
R312, R324)
Is the LVDS Cable
connected well?
Yes
No
Is normal the
12C communication?(Check
Pin5, Pin4)
Is the
input voltage normal?
(Check L308)
Yes
Is the 12C
communication? (Check
R309, R310)
14. In the case PIP doesn’t display from other modes (Sub)
- Same as the case of main except block A should be chandge to B.
B
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15. In the case of becomes unusual display from component 1 mode(main)
Check the input source.
Change IC(IC800).
Yes
No
Is video
input of the JK102
normal? (CheckL126,
L127, L128)
16. In the case of becomes unusual display from component 2 mode(main/sub)
Check the input source.
Change IC(IC800).
Yes
No
Is video
input of the JK103
normal? (CheckL129,
L130, L131)
17. In the case of becomes unusual display from RGB mode(main/sub)
Check the input source.
Change IC(IC800).
Yes
No
Is R,G,B input
and H,V sync of the JK500
normal? (ChecK R509, R511,
R512, R513, R515)
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