HCD-RXD7AV
21
21
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.
•
C
: panel designation.
Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
p
: parts mounted on the conductor side.
•
®
: Through hole.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
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 portant le numéro
spécifié.
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.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) 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.
F
: FM
f
: AM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
c
: digital out
: MD
• Abbreviation
CND : Canadian model
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
1
IC701
#£
(PLAY MODE)
2
IC701
2
(FEI)
(PLAY MODE)
3
IC701
$¶
(TEI)
(PLAY MODE)
4
IC703
@¡
(MDP)
5
IC702
$ª
(B) GFS
7
IC702
&¡
(XTAO)
Approx. 1.0Vp-p
Approx. 0.1Vp-p
Approx. 0.1Vp-p
2.4Vp-p
0.1
µ
sec/div
0.1V/div
7.7
µ
sec
5.7Vp-p
4.2336MHz
16.9344MHz
5.6Vp-p
(PLAY MODE)
8
IC601
$º
(X' TAL)
4.8Vp-p
10MHz
7.2MHz
3.6Vp-p
9
IC103
@™
(X OUT)
90.790kHz
52Vp-p
!º
CN202
4
(PLAY MODE)
(REC MODE)
6
IC702
%™
(A) C4M
CD DECODER SECTION
FLD SECTION
MAIN SECTION
•
WAVEFORM
7-2. CIRCUIT BOARD LOCATION
MAIN board
CD DECORD board
AMP board
FLD board
FUSE board
SW (A) board
SW (B) board
SW (C) board
CD KEY board
SENSOR board
H/P board
FRONT AMP board
FRONT board
SW (D) board
MOTOR board
PHOTO SOCKET board
MOTOR (6P) (S) board