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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Check HDMI Cable conductors for
damage.
Check JK800/ JK801/ JK903
Yes
Yes
Check input signal format.
Is it supported?
Yes
Check EDID NVRAM(IC800, 801, 902)
Power & I2C Signal (#5, #6)
Replace Jack.
No
Check HDMI Signal.
Yes
Check signal line.
No
Replace the defective IC or re-download
EDID data.
No
Check IC802 Voltage Level 3.3V, 5V &
Output
Replace Power supply regulator or IC802.
No
Check HDCP key NVRAM(IC102)
power & I2C Signal (#5, #6)
Replace the defective IC.
No
Yes
Yes
Check IC802 clock signal
#26, #27
Replace IC802.
No
Yes
Replace Mstar (IC100)
Yes
7. HDMI Video
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