Aiwa XR-EM20 Service Manual page 47

ADJUSTMENT (FRONT/DECK/TUNER/CD) - 8/8
3.JITTER CHECK
1) While oscilloscope is kept connected in the same test point as in
step2. RF WAVEFORM CHECK, connect the output terminal of
an oscilloscope to the input terminal of the jitter meter.
2) Set the VOLT range selector of oscilloscope to 500mV range or
below.
nd
3) Play back 2 track of TCD-782.
4) Check that jitter meter indicates 28.0ns or less.
4.TRAKING BALANCE CHECK
1) Connect the TE and Vref to the oscilloscope.
2) Playback the second track of TCD-782 and press the PAUSE butten.
3) Check that the ttaverse waveforms of oscilloscope are up and down symmetrical.
5. PLAY ABILITY CHECK
rd
1) Play back the 3
occur.
th th
, 8 and 13 track of ATD-001. Check that the noise does not occur sound skipping does not
OSCILLOSCOPE
RF
Vref
-47-
JITTER METER
OUTPUT INPUT
OSCILLOSCOPE
OUTPUT
RF
Vref
ns