Note For Printed Wiring Board And Schematic Diagrams - Sony D-EQ550 Service Manual
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Also See for D-EQ550:
- Operating instructions (2 pages) ,
- Specifications (2 pages) ,
- Operating instructions (3 pages)
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3 7 6 3 1 5 1 5 0
5-2.
NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• Abbreviation
FR
: French model
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
.
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Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
W or less unless otherwise
4
specified.
•
: internal component.
f
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted
une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
cal for safety.
Ne les remplacer que par une
Replace only with part
pièce por tant le numéro
number specified.
spécifié.
• A : B+ Line.
• Power voltage is dc 3 V and fed with regulated dc power
supply from external power voltage jack.
• Voltages are dc with respect to ground under no-signal
conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
E
: CD PLAY
• Abbreviation
FR
: French model
x
a o
u 1 6 3
y
i
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8
9
• Waveforms
1
2 p-p
16.9 MHz
IC601
VOLT/DIV : 1 V AC
ek X OUT
TIME/DIV : 50 nsec
2
2.6 p-p
4.24 MHz
IC801
VOLT/DIV : 1 V AC
2 XIN_I
TIME/DIV : 200 nsec
3
6.2 Vp-p
Q
Q
3
7
6
3
1
5
1
5.6 µ sec
IC401
VOLT/DIV : 2 V AC
TIME/DIV : 2 µsec
4 LG
PLAY MODE
4
3 Vp-p
5.6 µ sec
IC401
VOLT/DIV : 1 V AC
9 USW
TIME/DIV : 2 µsec
5
0.45-0.65 Vp-p
IC601
VOLT/DIV : 0.1 V AC
TIME/DIV : 0.5 msec
qh RFGO
c o
.
9
9
2
4
2
9
8
5
0
8
9
2
4
9
8
2
m
D-EQ550
9
9
9
9
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