Yamaha MOTIF XS6, Руководство по обслуживанию

Страница: 129 / 253

129
MOTIF XS6/MOTIF XS7/MOTIF XS8
xx: When connected: ON
When not connected: OFF
16 : AD-DA (MIC)
TEST MOTIF XS Test Program
ON
L-Channel Input xx
[Check item]
Operate the [A/D INPUT GAIN] knob to check that volume
is changed smoothly. Plug and unplug the jack and check if
switch status changes as plugged and unplugged.
[OUTPUT L/MONO]: 1 KHz±5 Hz, Sine wave, +4.0±2 dBu
(10 kohm load) (Distortion factor of
0.5 % or less)
[OUTPUT R]: -60.0 dBu or less (10 kohm load)
[Judgment indication]
No indication
[MIDI code output for judgment result]
None
[How to quit test]
• MANUAL MODE:
Press the [EXIT] button and sound will stop playing and a
condition waiting for test number will be selected.
• MIDI MODE:
Send a test code for another test to complete the current test
and the test for the newly sent test code will be executed.
[Others]
None
T17: A/D
"
D/A (LINE)
(Test Code: A01100)
[First indication]
Press [ENTER] 17 : AD-DA (LINE)
TEST
MOTIF XS Test Program
[Test contents]
Check the signal path from A/D input to D/A output. (Default
Gain setting is LINE)
The input from the ADC is routed through the SWP51 (Master
side (DM: IC010)) to be output from the DAC. AD Gain is
set to LINE via CPU.
[Test method]
Input sine waves into the [A/D INPUT R] jack in the order of
1 kHz ±5 Hz, -17.0 dBu ±0 dBu (Distortion factor of 0.1 % or
less) and check that the output of the following level is output
from the [OUTPUT L/MONO, R] jack.
17 : AD-DA (LINE)
TEST
MOTIF XS Test Program
xx: When connected: ON
When not connected: OFF
ON
R-Channel Input xx
[Check item]
Operate the [A/D INPUT GAIN] knob to check that volume is
changed smoothly.
Plug and unplug the jack and check if switch status changes as
plugged and unplugged.
[OUTPUT L/MONO]: -70.0 dBu or less (10 kohm load)
[OUTPUT R]:
1 KHz±5 Hz, Sine wave, +4.0±2 dBu
(10 kohm load) (Distortion factor of
0.2 % or less)