37
37
MDS-JE470
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• 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.
•
C
: panel designation.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : STOP
(
)
: PLAY
<
>
: REC
∗
: Impossible to measure
• 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
: PB
j
: REC
p
: PB (DIGITAL OUT)
l
: REC (DIGITAL IN)
• Abbreviation
CND : Canadian model
SP
: Singapore model
HK
: Hong Kong model
AUS
: Australian model
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
B
These are omitted.
C
E
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
piéce por tant le numéro
spécifié.
• WAVEFORMS
– MAIN Board –
– BD Board –
1
IC101
ek
(RF)
2
IC101
ef
(FE)
(Play mode)
3
IC101
wh
(TE)
(Play mode)
4
IC151
qh
(OSCI)
5
IC151
wj
(LRCK)
6
IC151
wk
(XBCK)
7
IC151
o;
(FS4)
8
IC171
3
1.3Vp-p
0.2Vp-p
1.6Vp-p
3.1Vp-p
22 nesc
3.2Vp-p
22.6
µ
sec
3.8Vp-p
354 nsec
22 nsec
5.67
µ
sec
1.0Vp-p
3.2Vp-p
1
IC1
qd
(XOUT)
2
IC550
qs
2.7Vp-p
2.6Vp-p
100 nsec
22 nsec
Summary of Contents for MDS-JE470 - Md Player
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