Yamaha AD8HR Service Manual page 41

2. [d05] HA GAIN TRIM Preset Value Setting (Manual)
Setup: Input a reference signal (+6dBu) to each channel
Select test program No. [d05] on the GAIN encoder and press the [+48V] key to run the HA GAIN TRIM preset value
setup. You can also enter the following characters from the terminal software:
AD8HR_DIAG>5
and run the test. (You don't need to press the Enter key.)
A meter is displayed when this program No. is run. The channel select button of CH1 (channel 1) lights up and the current
TRIM value appears in the 7 segment LED. Pressing the channel select button selects a particular channel and the TRIM
value selected for that channel appear in the 7 segment LED display. Turning the encoder changes the trim in 0.1dB steps
within a range of ± 1.5dB. Manually adjust the trim value so that the meter level reaches -18dB on each channel.
The terminal software displays the following message.
DIAG [05] TRIM PRESET MEASURING ...
Please push +48v SW, if measurement is completed.
Pressing the [+48V] key ends this adjustment, writes this value in the Flash Memory, and makes the [d06] 7 segment LED flash.
3. [d10] Memory Initialize
Select the test program No. [d10] on the GAIN encoder and press the [+48V] key to run memory initialize. You can also
run it by entering the following characters:
AD8HR_DIAG>A
from the terminal software. (You don't need to press the Enter key.)
The following is displayed by the terminal software when this program is run.
DIAG [10]
AD8HR_DIAG>
4. [d11] Program Version Display
Select the test program No. [d11] on the GAIN encoder and press the [+48V] key to display the program version on the
7 segment LED display for about 1 second. You can also do this by entering the following characters:
AD8HR_DIAG>ver
from the terminal software. (You don't need to press the Enter key.)
The following is displayed by the terminal software when this program is run.
AD8HR software version is v x.xx (x.xx version)
AD8HR_DIAG>
There is no need to run this in a test.
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MEMORY INITIALIZE ... DONE
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