Yamaha 01x, Service Manual

Page: 58 / 153

58
O1X
4) INPUT4 (BAL PHONE)
Measure at INPUT4 → STEREO/AUX OUT R.
The items to measure and specified values are the same as
those of INPUT1.
5) INPUT5 (BAL PHONE)
Measure at INPUT5 → MONITOR OUT L.
The items to measure and specified values are the same as
those of INPUT1.
6) INPUT6 (BAL PHONE)
Measure at INPUT6 → MONITOR OUT R.
The items to measure and specified values are the same as
those of INPUT1.
7) INPUT7 (BAL PHONE)
Measure at INPUT7 → STEREO/AUX OUT L.
The items to measure and specified values are the same as
those of INPUT1.
8) INPUT8 (BAL PHONE)
Measure at INPUT8 → STEREO/AUX OUT R.
The items to measure and specified values are the same as
those of INPUT1.
9) INPUT HI - Z (UNBAL PHONE)
Measure at INPUT HI - Z → STEREO/AUX OUT R.
• LINE Gain (INPUT GAIN VR knob at LINE.)
Input 1kHz +4 dBu
Output level -10dBV
±
3dB
Maximum output
Input 1kHz +18dBu
Output distortion 5% or less
10) PHONES
Measure at INPUT5 → PHONES L and INPUT6 →
PHONES R.
• LINE Gain (INPUT GAIN VR knob at LINE)
Input 1kHz +4dBu
Output level +5dBV
±
3dB
Distortion 0.05% or less
Maximum output
Input 1kHz +7dBu
Output distortion 5% or less
Noise level
Set MONITOR OUT VR knob at min
Output level -95dBV or less
11) MONITOR OUT Noise
Measure at MONITOR OUT L/R.
Set MONITOR OUT VR knob at min
Output level -95dBV or less
12) HI-Z Input Cross Talk Check
INPUT7
→
LINE
INPUT8 → MIC
INPUT HI - Z → end with 220k
Ω
Input 1kHz + 18dBu into INPUT7 terminal and measure
the level at STEREO OUT R.
Output level: -48dBu or less
Fader Inspection
(1) Items to measure
Measure at 22 FADER LEVEL and 30 FADER AGING
1) Set the position at 22 FADER LEVEL and check that it
does not deviate from the index during calibration.
2) During 30 FADER AGING operation, check that the
fader does not stop before the end and it does not contact
both ends. Also, check that the fader does not oscillate.
The range when performing MOVE MEASURE for
FADER AGING should be 40ms or less. Make a
judgment based on the aging operation in both ways
about 10 times.
(The fader characteristic is learned while the aging
operation is repeated about 5 times and proper operation
is provided. Until then the operation may vary but it
should be ignored.)
Noise level
Output level -90dBV or less
Maximum output
Input 1kHz +18dBu
Output distortion 1% or less
• MIC gain (INPUT GAIN VR knob at MIC)
Input 1kHz -46dBu
Output level -10dBV
±
2dB
Distortion 0.2% or less
Noise level
Output level -65dBV or less
2) INPUT2 (BAL XLR)
Measure at INPUT2
→
MONITOR OUT R.
The items to measure and specified values are the same as
those of INPUT1.
3) INPUT3 (BAL PHONE)
Measure at INPUT3 → STEREO/AUX OUT L.
The items to measure and specified values are the same as
those of INPUT1.