Check item(52).
Check the TMDS CLK detection status of the regis-
ter.
Send the following command from Termite.exe.
Send the command "
i 0006 00FF 0001
".
When the following value is returned, go to Yes.
"
C8
"
When the following value is returned, go to No.
"
other
"
Checking the TMDS status register (OSD -> HDMI Rx/Tx)
Example
i 0006 00FF 0001
Check item (53).
Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
HDMI SW[
IC701
]
42/43/45/46/48/49/51/52pin
IC721
HDMI Rx/Tx[
IC721
] is faulty.
Replace with a new device.
Recheck from
check item (3).
If it does not work, replace the PCB.
OSD[
IC731
] is faulty.
Replace with a new device.
Check the connection between the HDMI OUT terminal and the TV.
Go to check item (54)
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
3-10. OSD [
ADV7623
] failure detection procedure
99
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
Содержание AVR-S730H
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