15
D-EJ119/EJ120/EJ121
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
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
Note on Schematic Diagram:
• 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.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Total current is measured with CD installed.
• Power voltage is dc 4.5 V and fed with regulated dc power supply
from DC IN jack (J401).
• Voltages and waveforms are dc with respect to ground in playback
mode.
no mark : CD PLAY
*
: Imposible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
• Abbreviation
CND
: Canadian model
EE
: East European model
E18
: Without remote control model
4E18
: With remote control model
EA
: Saudi Arabia model
AUS
: Australian model
MX
: Mexican model
TW
: Taiwan model
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
• WAVEFORMS
450 to 650 mVp-p
1
IC601
qd
RFI
100mV/DIV, 500ns/DIV
2
IC601
ek
XOUT
1V/DIV, 20ns/DIV
3
IC801
2
XIN
1V/DIV, 100ns/DIV
4
IC801
qk
SCK-O
1V/DIV, 400ns/DIV
59ns
945ns
1.8 Vp-p
2.6 Vp-p
236ns
2.0 Vp-p
5
IC403
ef
SYNC
1V/DIV, 2us/DIV
5.6us
2.2 Vp-p
• Abbreviation
CND
: Canadian model
EE
: East European model
E18
: Without remote control model
4E18
: With remote control model
EA
: Saudi Arabia model
AUS
: Australian model
MX
: Mexican model
TW
: Taiwan model
Ver. 1.2
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 portant le numéro
spécifié.
