Inspection Under The Normal Mode; Jitter Measurement; Recording/Playing And Sound Inspection - Yamaha AW-1600 Service Manual

AW1600
5-2-8 INPUT 8 (BAL XLR)
(1) Measure at INPUT 8 – > MONITOR OUT R.
(2) Set the MONITOR/PHONES VR to MAX.
(3) The measured item and the value are same as specified
for INPUT 1.
5-2-9 INPUT Hi-Z (UNBAL PHONE)
(1) Measure at INPUT Hi-Z – > MONITOR OUT R.
(2) Set the MONITOR/PHONES VR to MAX.
(3) Measured items
1 LINE gain
Input frequency Input level
1 kHz +4 dBu
2 Maximum output
Input frequency Input level
1 kHz +4 dBV
5-2-10 PHONES
(1) Measured at INPUT 7 – > PHONES L, and INPUT 8 – >
PHONES R.
(2) Set the MONITOR/PHONES VR to MAX.
1 Gain
Input frequency Input level
1 kHz –2 dBu
2 Maximum output
Input frequency Input level
1 kHz +3.7 dBu
3 Distortion
Input frequency Input level
1 kHz –2 dBu
4 Frequency response
Input frequency Input level
20 Hz –2 dBu
20 kHz –2 dBu
5 Noise level
Set the MONITOR/PHONES VR to MAX.
Permissible range
–95 dBu or less
5-2-11 MONITOR OUT residual noise
(1) Measure at MONITOR OUT L/R.
(2) Set the MONITOR/PHONES VR to MIN.
(3)Measured item
Permissible range
–100 dBV or less
6.

Inspection under the normal mode

6-1 DIGITAL IN (COAXIAL)
(1) Check the unit operates normally concerning the
DIGITAL signal (Fs: 44.1 kHz –10 %, +6%) from the
external device.
6-2 DIGITAL OUT (COAXIAL)
(1) Check the unit outputs the DIGITAL AUDIO signal
normally.
50
Standard output level Permissible range
–10 dBV –10 ± 3 dBV
Permissible range (distortion)
5% or less
Standard output level Permissible range
–2.3 dBu –2.3 ± 3 dBu
Permissible range (distortion)
1% or less
Permissible range (distortion)
0.1% or less
Permissible range (1 kHz reference)
–3 to +1 dB
–3 to +1 dB
6-3

Jitter measurement

(1) Measure the jitter value of the DIGITAL OUT with the
DSA-1.
1) WORD CLOCK SOURCE: jitter of 5 nsec or less
2) INT 44.1 kHz FIX: 5 nsec or less
3) D.ST IN 44.1 kHz: 15 nsec or less
6-4

Recording/playing and sound inspection

6-4-1 16TRACK recording/playing inspection
(1) Record the audio signal from the external device (CD
player, etc) to TR1-TR16, and check the audio signal is
played normally by listening. Do not save the recorded
SONG data.
6-4-2 Metronome playing inspection
(1) Check the metronome sound generated by listening.
6-4-3 EFFECT inspection
Recall the following EFFECT LIBRARY:
001: Reverb Hall
015: Symponic
019: HQ Pitch
026: Dyna.Filter
Check the signal with the effect above for 15 seconds or
more.
Check the effect sound is output normally, and no noise is
included in the effect sound.
6-4-4 Playing the sampling pads
Check the sound is generated when pressing the sampling
pads 1-4.
6-4-5 Reading inspection of the CDRW drive
Insert the disc into the drive, and read disc information.
(1) Insert an audio CD into the CDRW drive.
(2) Press the [CD] key several times and display the CD
PLAY screen on the LCD.
(3) Set the CD PLAY MODE to ON, and check the track
number and time are displayed in the TRACK TIME
section on the right.