Yamaha DME4io-ES Service Manual page 67

Other items to be checked
Operation of the ES circuit board
Signal between the ES circuit board and the DSP circuit board
This test is using the DSP7 and the ATSC2 functions, therefore, the result may not be OK unless the results for the test of
DSP7 and ATSC2 are OK.
3-13. LED Test (NO. 15)
Contents: Check visually if LEDs on the panel light on in the designated order.
Example of Executing Screen
*** 15. LED ***
OK:[ENTER], NG:[0]
q As for the order of lighting, each lights on one by one from the left side of the panel to the right side. Refer to the
following table for details on LED during DSP circuit board test.
w When all LEDs have lighted on, all of them light on simultaneously and the test will be completed. (All light on is
to confi rm the LEDs' brightness.)
Test No. LED Name
1 NETWORK
2 CH-1 PEAK
3 CH-2 SIGNAL
∗ CH-7 PEAK
4
∗ CH-8 SIGNAL
5
Troubleshooting
Check the signals coming through the CN250 of the DSP circuit board in case of NG.
Or some LED may be defective.
3-14. DIP SWITCH Test (NO. 17)
Contents: Checks if the DIP SWITCH condition is recognized properly.
Example of Executing Screen
*** 17. DIP SWITCH
Set Position
[ ~~~~ _ ~ ]
123456
NG:[ENTER]
Operation
q Set the DIP SWITCH as indicated on the PC.
w If the DIP SWITCH position matches, the next condition will be shown on the PC.
If the displayed key does not match the pressed switch, it remains on PC display. Press the [ENTER] key to return
to the Testing Item Selection List Screen.
e If the results are OK after all switches have been examined, the program returns to the original Testing Item
Selection List Screen.
∗ In case of DME4io-ES, OUTPUT CH-1 or CH-4
instead of CH-7 or CH-8.
***
DME4io-ES/DME8i-ES/DME8o-ES
67