CD-4900M/DPF-J9030
ADJUSTMENT
INPUTOUTPUTPLAYERALIGNMENT
No.ITEMSETTINGSETTINGSETTINGPOINTALIGN FORFIG.
1. With pressing the REPEAT KEY, turn the power on to enter the test mode.
2. Set the Test disc to Disc NO. 1.
3. Close the door.
Connect an oscillo-Press the PLAY
Test discFE BIAS
FOCUS ERRORscope as follows./PAUSE key .Optimum eye
1Type4VR1(d)
BIASCH1:RF(X25, CN2-1Confirm that the pattern
/KTD-02(X25, X32)
X32, CN2-1)display is "05".
Connect the DC volt-Press the PLAY
LASER CURRENTTest discmeter between Q1(E)/PAUSE key .
2�0.5?0.2V
CHECKType4and VCC(CN1, 15pin)Confirm that the
on X25 and X32.display is 03 or 05.
Note:
Type 4 disc :SONY YEDS-18 Test Disc or equivalent.
LPF : Around 47k1 + 390 pF or so.
FIG. (d)
RF signal in test mode (PLAY).
Perform the tangential and focusing offset are focused into
RF signal
one point on the display. The crossing points above and
below the center shall also be looked clearly. (FE BIAS)
8 |
ACEC
