LG 32LG30 Service Manual page 16

5. RGB Video
Check input signal format.
Is it supported?
Yes
Check RGB Cable conductors for
damage.
Yes
Check JK605
Yes
Check signal Hsync, Vsync
R633, R634
Yes
Check R/G/B signal
R640, R641, R642
Yes
Check Mstar LVDS output
6. AV Video
Check input signal format.
Is it supported?
Yes
Check AV Cable/ S-Video Cable for damage or
open conductor.
Yes
Check JK600(Rear).
Check JK602(Side).
Yes
Check signal
C635(Composite), C634/ C633(S-Video)(Rear),
R615(Composite)(Side)
Yes
Check Mstar LVDS output
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Only for training and service purposes
No
Replace Jack.
No
Check other set.
If no problem, check signal line.
No
Check other set.
If no problem, check signal line.
No
Replace Mstar(IC100).
No
Replace Jack.
No
Check other set.
If no problem, check signal line.
No
Replace Mstar(IC100).
- 16 - LGE Internal Use Only