Yamaha n8 Service Manual page 77

• Example of executing screen
* Refer to "3. List of test items" for details. (Page 80)
2-7. MUTE ON/OFF test
2-7-1. Outline
Conducts tests on the following items related to functions
around MUTE. Is the MUTE signal line between DICEII and
SSP1 connected correctly?
Are the signal lines to SSP1, Mute Controller and DAC
connected correctly?
Does the MUTE function work correctly?
2-7-2. Test contents
Makes the AD/DA of the SSP1 connected through so that
sound from AD is output to DA.
• Checking MUTE function with MUTE signal from the
DICEII to SSP1
Outputs MUTE signal from GPIO of DICEII.
As connected to MUTE connector of the SSP1, the output of
SSP1 is muted due to the hardware confi guration.
Check the output sound to check if the MUTE ON/OFF
works correctly.
• Checking MUTE function from the SSP1 to Mute Controller
Outputs MUTE signal from the SSP1 to Mute Controller.
The DAC will be muted by the Mute Controller.
Check the output sound to check if the MUTE ON/OFF
works correctly.
2-7-3. Execution of test from PC
Switches MUTE ON/OFF by transmitting MIDI command for
executing test from the personal computer.
* Refer to "3. List of test items" for details. (Page 80)
2-7-4. In case of executing tests from n8 or n12
Switches MUTE ON/OFF by pressing the [MUTE] key for
executing test on the n8 or n12.
2-8. PAD ON/OFF test
2-8-1. Outline
Conducts PAD ON/OFF test.
2-8-2. Test contents
Switches PAD ON/OFF and checks if the function works
normally.
2-8-3. Execution of test from PC
Switches PAD ON/OFF by transmitting MIDI command for
executing test from the personal computer.
* Refer to "3. List of test items" for details. (Page 80)
2-9. Hi-Z ON/OFF test
2-9-1. Outline
Conducts Hi-Z ON/OFF test.
2-9-2. Test contents
Switches Hi-Z ON/OFF and checks if the function works
normally.
2-9-3. Execution of test from PC
By transmitting MIDI command, switches Hi-Z ON/OFF of
CH 4 in case of the n8 or Hi-Z ON/OFF of CH 8 in case of the
n12.
* Refer to "3. List of test items" for details. (Page 80)
2-10. Phantom +48 ON/OFF test (10 +48 ON/OFF)
2-10-1. Outline
Conducts Phantom +48 V ON/OFF test.
2-10-2. Test contents
Switches Phantom +48 V ON/OFF and checks if the function
works normally.
With the No. 2 and No. 3 pins of the INPUT A 1-4 (n8)/1-8 (n12)
shorted, connect a resistance load of 10 kΩ between No. 1 and
No. 2 pins.
Turn on the phantom function.
Check that the voltage applied to the resistor is within the
following range.
Voltage
+35 ± 3 V
2-10-3. Execution of test from PC
Switches Phantom +48 V ON/OFF by transmitting MIDI
command.
* Refer to "3. List of test items" for details. (Page 80)
2-11. DAW I/O connector connection check
(IEEE1394 CONNECT)
2-11-1. Outline
Checks connection of the DAW I/O connector (mLAN).
n8/n12
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