Electrical Adjustments; Focus Bias Check - Sony D-NE510 Service Manual

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CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.

4-1. FOCUS BIAS CHECK

1. Connect the oscilloscope between TJ601 (RF) and GND on
main board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the N X button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
VOLT/DIV : 20 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
Test Points:
TE
L 13942296513
— MAIN BOARD — (SIDE B)
TP709
TP710
TP852
TP824
TP851
C414
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ELECTRICAL ADJUSTMENTS

RF level :
0.45 ± 0.1 Vp-p
L603
TP954
C707
X701 VDR609
TP702
FB701
TP701
R731 C711 C713
R706
R630
TP703
R707
C719
VDR608
32 1
33 R716
716 R639
VDR607
R726
C715
IC701
C716
C717
TP727
C718
48 1
TP711
49 64
TP716
R886
R729
TP713 R723
TP715
C811
R708 R710 TP729
TP712
R832
R709 R721
R720 TP730
R828 R821
R733 D803
R811
TP812 R887
Q801
C812
C896
D802
R829
R825
100
D801
R830
R827
1
R831
TP802
Q802
E C B
TP811
TP803
C813
C814
TP804
TP823
TP805
R906
SL804
TP808
R914
R908 25
TP810
26
TP809
R837 R820
TP831
D404
R409
L409
R402
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SECTION 4
8
Q Q
3 6 7 1 3
R715
13 1
IC603
14 26
TP604
VDR606 TP606
VDR605 VDR604
TP603
TP608
R641
TP608
TP953 TP602
R642 R643
30
FB602
31
R649
C697
TP952
C628
IC601
C604 C627
TP612
TP951
R613
R816
C620
61
R817
60
R846
C621
TP615
TP616 TP625
76
R620
R934
75
R619
R935
R617
R933 TP619
R624
R618
R877
TP624
IC801
TP818
R847
TP623
R850
R911
R897
R814
R853
TP622
R949
TJ601
51
TP618
50
TP651
TP653
TP813
TJ801 TP647
(TEST)
TP646
TP645
C631
TP648
TP821
u163
.
D-NE510/NE511/NE518CK
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
TP642
TP644
TP643
R637
TP640
TP603
1
TP641
120
R616 R615
TP638
TP637
R607
TP636
TP635
TP634
TP960
TP633
TP632
D301
90 91 TP631
TP949
SL601 TP630
TP347
VDR612
TP302
TP301 C318
C612
TP946 TP629
R312
R625
C699
R316
C611
TJ306
R627
C601
R630
R633
C614
R632
R629
R626
R663
TJ101
R662
TP627
TJ301
TP626
SL602
FB201
TP620
TP914 TJ201
VDR306
L601
TJ602
K AK A
VDR307
C301
C603
D308
VDR308
TP946
C632
m
TJ603
R699
TP652
R631
co
TJ601 (RF)
9 9
2 8 9 9
7