Yamaha DME4io-ES Service Manual page 66

DME4io-ES/DME8i-ES/DME8o-ES
• When inspecting the 96 kHz OUT connector, set up the I/O Patch of the NAI48-ES as shown in the fi gure below
through the AVS-ES Monitor on the PC.
Example of Executing Screen
Checking IN
Checking OUT
Test contents
q When the test is started, serial data is output from the CPU and automatically checks if the data looped back in
the ES circuit board can be received in the CPU.
w Audio data is output from the DME Satellite to the EtherSound and the data is compared with the data looped
back by the jig so that it is checked automatically if the data are identical.
e Set the I/O Patch setup of the NAI48-ES to OUT connector test. (WC External, Loopback confi g)
r Change the LAN cable connection to the OUT connector of the DME Satellite to be tested and the IN terminal of
the NAI48-ES as a jig and then press the [ENTER] key of the PC.
t Similarly, audio data looped back by the jig is compared to judge automatically if the data are identical.
y If an error occurs on the way, the error message will be displayed and the test will be fi nished.
Error message and Troubleshooting
• If the serial data cannot be received:
Check the signals connected to the following terminals in case of NG.
TxD2 (195Pin), RxD2 (201Pin) of CPU (CPU circuit board: IC002)
• If the audio data cannot be received:
Check the signals connected to the following terminals in case of NG.
PA_SO0 (50Pin), PA_SO2 (52Pin), PB_SO0_ATO (77Pin), PB_SO2 (79Pin), PC_SIO_ATI (89Pin), PC_SI2 (93Pin),
PD_SI0 (119Pin), PD_SI2 (121Pin) of ATSC2 (DSP circuit board: IC403)
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*** 13. ETHER SOUND ***
IN LoopBack OK.
SIO CONNECTION---
DSP7-1 ==> DSP7-1
OK!
IN LoopBack OK.
Change OUT [ENTER]
SIO CONNECTION---
DSP7-1 ==> DSP7-1
OK!
OUT LoopBack OK.
EXIT:[ENTER]
Change I/O Patch
setup here.
NG: SERIAL LOOPBACK ERROR.
NG: AUDIO LOOPBACK ERROR.