Marantz SR5012 Service Manual page 115

When the results of check item (42) are "22"
(Detection of DDC is OK.)
Checking the TMDS status register
Check item(45). Checking register of the TMDS CLK detection status
register :
Send the following command from Termite.exe.
HDMI Rx1 (When checking HDMI inputs 1, 2, and 3)
Send the command "i 002E 00FF 0001".
Rx2 (When checking HDMI inputs 4, 5, 6, and 7)
Send the command "i 0056 00FF 0001".
When the following value is returned, go to YES.
HDMI In1 "44" HDMI In2 "22" HDMI In3 "11" HDMI In4 "88" HDMI In5
"44" HDMI In6 "22"HDMI In7 "11"
When the following value is returned, go to NO.
HDMI In1 "40" HDMI In2 "20" HDMI In3 "10" HDMI In4 "80" HDMI In5
"40" HDMI In6 "20" HDMI In7 "10"
YES
Check item(46). Checking the audio signal output :
Check the audio signal waveform at the following test point.
Is the waveform like the sample?
HDMI Rx1 [U1000] HDMI Rx2 [U1003]
(When checking HDMI inputs (When checking HDMI inputs
1, 2, and 3) 4, 5, 6, and 7)
U1000 U1003
129/131/132/133/134/135/136 pin
YES
The digital audio block is faulty.
Check the digital audio device.
Check "AUDIO" in troubleshooting.
If it does not work, replace the PCB.
Example
i 002E 00FF 0001
NO
3.3V
The diagram shows an example of the wave-
form of pin 129. (I2S0 Data)
Waveform check points
- Crest value (3.3V normally)
- Signal change
Check the waveform of each pin.
Voltage scale : 1.0V/div
Time scale : 500ns/div
NO
HDMI Rx [U1000 or U1003] is faulty.
Replace with a new device.
3.3V
Example of waveform in check ① Example of waveform in check ②
Voltage scale : 1.0V/div
Time scale : 20ms/div
Check item(47). Checking the TMDS input waveform. :
Check the TMDS waveform at the following test point.
Is the waveform like the sample?
HDMI Rx1 [U1000] HDMI Rx2 [U1003]
(When checking HDMI inputs 1, 2, and (When checking HDMI inputs 4, 5, 6,
3) and 7)
U1000
YES
HDMI Rx [U1000 or U1003] is faulty.
Replace with a new device.
Recheck from check item (2).
If it does not work, replace the PCB.
115
TMDS Signal TMDS
Voltage scale : 1.0V/div
Time scale : 1s/div
HDMI In3/7
93/94/96/97/99/100/102/103 pin
HDMI In2/6
80/81/83/84/86/87/89/90 pin
U1003
HDMI In1/5
55/56/58/59/61/62/64/65 pin
HDMI In4
42/43/45/46/48/49/51/52 pin
NO
Check for a short circuit in the pattern of the
TMDS line of the HDMI Rx [U1000 or
the HDMI input terminal.
If there is no problem, the HDMI Rx
U1003] is faulty. Replace with a new device.
U1003] from
[U1000 or