When the results of check item (47) are "
22
"
(Detection of DDC is OK)
Check item(50).
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 (51).
Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
HDMI SW[
U1024
]
70/71/73/74/76/77/79/80pin
U1024
Checking the TMDS status register
HDMI SW [
U1024
] is faulty.
Replace with a new device.
Recheck from
check item (2).
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 [
U3000
] is faulty.
Replace with a new device.
HDMI SW [
U1024
] 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
Voltage scale：1.0V/div
Time scale：20ms/div
TMDS
Example of waveform in check ②
Voltage scale：1.0V/div
Time scale：1s/div
NO
99
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
