Yamaha CDR-S1000 Service Manual page 13

Step
Item
3 Audio measurement mode
A/D converter
(ATM mode)
Signal genarator
500mVrms
1kHz/20Hz/20kHz
Level meter
Step Item
4 D/A converter Normal mode
CDR-S1000
Mode Input signal
LINE IN (ANALOG)
1kHz, 20Hz, 20kHz
500mVrms
CD player
LINE IN
DIGITAL OUT
(ANALOG)
(COAXIAL)
Mode Input signal
LINE OUT
(ANALOG)
YEDS-18
Track 2 (1kHz, 0dB)
Track 3 (20Hz, 0dB)
Track 6 (20kHz, 0dB)
Track 7
Check method and standard
Disc
1. Set the INPUT selector to the ANALOG posi-
No disc
tion.
2. Apply a 1kHz, 500mVrms analog signal to the
LINE IN (ANALOG).
3. Demodulate the digital signal of DIGITAL OUT
(COAXIAL) to analog.
4. Adjusting the REC LEVEL control knob, check
that the demodulated signal level can be set
to 1Vrms. (The level meter should indicate -
6dB on display.)
5. At this time, check that the REC LEVEL con-
trol knob is close to the 12 o'clock position.
6. Check that the distortion factor is 0.03% or less.
7. Check that the S/N is 80dB or more. (Input
shorted, REC LEVEL max.)
8. Check that the frequency response (at 20Hz
and 20kHz) is 0 ± 1.5dB.
AV amplifier
DIGITAL IN
PRE OUT
(COAXIAL)
Check method and standard
Disc
1. Cancel the audio measurement mode.
YEDS-18
2. Turn on the power. (In normal mode)
3. Load the CD test disc (YEDS-18: TX911730).
4. Play track 2 (1kHz, 0dB).
5. Check that the output level of LINE OUT (ANA-
LOG) is 2 ± 0.5Vrms.
6. Check that the distortion factor (1kHz) is 0.01%
or less.
7. Play tracks 3 (20Hz) and 6 (20kHz) and check
that the frequency response is 0 ± 1.5dB.
8. Play track 7 and check that S/N is 100dB or
more.
Oscilloscope
Level meter
Distortion meter
CDR-S1000
Oscilloscope
Level meter
Distortion meter
12