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ELECTRICAL ADJUSTMENT -6/6
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.
3) Play back 2nd 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
1) Play back the 3rd , 8th and 13th track of ATD-001. Check that the noise does
not occur sound skipping does not occur.
6.LASER CURRENT CHECK
*Do not perform this measurement unless the laser is suspected to be defective.
1) Connect digital multi-meter across the resistor R302 (10ohm).
2) Play back the TCD-782 and check the DC voltage value on the digital multi-meter.
3) Calculate the laser current (Iop) by dividing the DC voltage across R315 by the
resistor value (R302= 10ohm).
Check that the laser current (Iop) is SPEC value
10%.
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