Yamaha DME4io-ES Service Manual page 69

Example of Executing Screen
*** 19. AD ***
PHATOM=OFF, GAIN=+10dBu
OK:[ENTER], NG:[0]
PHATOM=OFF, GAIN=-60dBu
OK:[ENTER], NG:[0]
......
q When the test is started, PHANTOM and GAIN are set as displayed. Measure the output level and check if the input
from the ANALOG IN is in the settings.
(The output destination is different according to the circuit board to be checked. DME8o-ES does not need this test.)
w Press the [ENTER] key of the PC if the level is OK. The next setting will be displayed. Check the output level in the
same manner and press the [ENTER] or [0] key according to the result.
e If the level is NG, press the [0] key of the PC to fi nish the test.
During AD circuit board test
Test No. Fs
1 96k
2 96k
3 96k
4 96k
5 96k
6 96k
7 96k
8 96k
9 96k
10 96k
11 96k
12 96k
13 96k
14 48k
15 48k
Troubleshooting
In case of abnormal level of output, check the followings.
Whole AD circuit board
Signal coming through the CN701 of AD circuit board
The result may not be OK unless the result for the DSP7 test is OK as the DSP7 function is used.
3-16. DA Test (NO. 20)
Contents: Checks if the DAC/MUTE functions on the DA circuit board work properly.
Preparations: • Set up the I/O Patch of the NAI48-ES in the same way as in procedure 3-15 depending on Fs.
• Send an analog signal from the built-in oscillator using 01V96, etc.
Example of Executing Screen
*** 20. DA ***
MUTE=OFF, FS=96K
OK:[ENTER], NG:[0]
MUTE=OFF, FS=48K
OK:[ENTER], NG:[0]
MUTE=ON, FS=48K
OK:[ENTER], NG:[0]
During a test other than the AD circuit board test
HA-GAIN PHANTOM Test No.
10 dBu OFF
-60 dBu OFF
8 dBu OFF 13
6 dBu OFF 14
4 dBu OFF
2 dBu OFF
0 dBu OFF
-2 dBu OFF
-4 dBu OFF
-22 dBu OFF
-36 dBu OFF
-44 dBu OFF
-60 dBu ON
10 dBu OFF
-60 dBu OFF
Fs HA-GAIN
1 96k 10 dBu
2 96k -60 dBu
96k -60 dBu
96k 10 dBu
DME4io-ES/DME8i-ES/DME8o-ES
PHANTOM
OFF
OFF
ON
OFF
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