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THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
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
/
W or less unless otherwise
4
specified.
•
¢
: internal component.
• C : panel designation.
Note:
Note:
The components identi-
Les composants identifiés par
une marque ! sont critiques
fied by mark ! or dotted
line with mark ! are criti-
pour la sécurité.
cal for safety.
Ne les remplacer que par une
Replace only with part
piéce portant le numéro
number specified.
spécifié.
• 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 MΩ).
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
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
•
: parts mounted on the conductor side.
p
•
®
: 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
Q
These are omitted.
B
E
Q
B
C E
These are omitted.
7-2. CIRCUIT BOARD LOCATION
SW (C) board
FRONT AMP board
CD KEY board
SENSOR board
H/P board
FRONT board
• WAVEFORM
CD DECODER SECTION
1
5
IC701 #£ (PLAY MODE)
IC702 $ª (B) GFS
(PLAY MODE)
0.1µsec/div
0.1V/div
Approx. 1.0Vp-p
2
6
IC701 2 (FEI)
IC702 %™ (A) C4M
(PLAY MODE)
Approx. 0.1Vp-p
4.2336MHz
3
7
IC702 &¡ (XTAO)
IC701 $¶ (TEI)
(PLAY MODE)
Approx. 0.1Vp-p
16.9344MHz
4
IC703 @¡ (MDP)
(PLAY MODE)
2.4Vp-p
7.7 µsec
21
21
PHOTO SOCKET board
SW (B) board
SW (D) board
MOTOR (6P) (S) board
MOTOR board
AMP board
FLD board
FUSE board
FLD SECTION
8
IC601 $º (X' TAL)
10MHz
4.8Vp-p
MAIN SECTION
9
IC103 @™ (X OUT)
5.7Vp-p
3.6Vp-p
7.2MHz
!º
CN202 4
(REC MODE)
5.6Vp-p
90.790kHz
52Vp-p
HCD-RXD7AV
SW (A) board
CD DECORD board
MAIN board
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