When the results of check item (23) are "
22
"
(Detection of DDC is OK)
Check item(26).
Check the TMDS CLK detection status of the regis-
ter. :
Send the following command from Termite.exe.
Send the command "
i 002E 00FF 0001
".
When the following value is returned, go to Yes.
"
88
"
When the following value is returned, go to No.
"
80
"
Check item(27).
Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
HDMI Rx1 (
U1000
)
42/43/45/46/48/49/51/52 pin
Checking the TMDS status register
HDMI Rx1 (
U1000
) is faulty.
Replace with a new device.
Recheck from
check item (3).
If it does not work, replace the PCB.
Check for a short circuit in the TMDS line and the Front HDMI FFC.
If there is no problem, the Front HDMI Buffer (
U1022
) is faulty.
Replace with a new device.
HDMI Rx1 (
U1000
) is faulty.
Replace with a new device.
Example
i 002E 00FF 0001
YES
YES
NO
TMDS Signal
3.3V
Example of waveform in check ①
TMDS
Example of waveform in check ②
NO
92
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
