D-EQ550
9
9
5
4
1
3
2
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.
Note on Schematic Diagrams:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
Note:
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
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 M
Ω
).
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
• Waveforms
IC601
ek
X OUT
VOLT/DIV : 1 V AC
TIME/DIV : 50 nsec
IC801
2
XIN_I
IC401
4
LG
VOLT/DIV : 1 V AC
TIME/DIV : 200 nsec
PLAY MODE
VOLT/DIV : 2 V AC
TIME/DIV : 2
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ
sec
2 p-p
16.9 MHz
2.6 p-p
4.24 MHz
6.2 Vp-p
5.6
µ
sec
3 Vp-p
5.6
µ
sec
IC401
9
USW
IC601
qh
RFGO
VOLT/DIV : 0.1 V AC
TIME/DIV : 0.5 msec
0.45-0.65 Vp-p
• Abbreviation
FR
: French model
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
