– 41 –
– 42 –
7-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
•
Circuit Boards Location
Note on Schematic Diagram:
• 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
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• 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.
F
: FM/AM
E
: MD PLAY
q
: MD REC
J
: CD PLAY (ANALOG OUT)
c
: CD PLAY (DEGITAL OUT)
d
: TAPE PLAY
G
: TAPE REC
• Abbreviation
CND : Canadian model.
HK
: Hong Kong model.
SP
: Singapore model.
Note:
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
®
: Through hole.
•
b
: 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.
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
EJECT board
MOTOR board
SENSOR board
AMP board
JOINT board
BD (CD) board
MAIN board
POWER board
SW board
BD (MD) board
HP board
PANEL board
Содержание HCD-MD1EX - System
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Страница 11: ... 11 This section is extracted from instruction manual ...
Страница 44: ...HCD MD1EX 55 56 7 12 PRINTED WIRING BOARD MAIN Board side A See page 41 Circuit Boards Location ...
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