34
34
HCD-L7HD
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.
•
5
: fusible resistor.
•
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.
•
: Pattern from the side which enables seeing.
•
A
: B+ Line.
•
B
: B– Line.
• 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
E
: TAPE (PB)
a
: TAPE (REC)
J
: DIGITAL OUT
c
: CD/DIGITAL IN
q
: HDD (PB)
r
: HDD (REC)
• Abbreviation
CND : Canadian model.
• Indication of transistor
6-2. Circuit Boards Location
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.
B
These are omitted.
C
E
B
These are omitted.
C
E
C
B
These are omitted.
E
Q
*
Replacement of IC101, 401 used on the HDD SUB board
requires a special tool.
•
Lead Layouts
CSP (chip size package)
surface
Lead layout of
conventional IC
TOUCH SW board
POWER board
MAIN board
HDD IF board
HDD SUB board
AMP board
REG board
FM/AM tuner
switching regulator
SWITCH board
FL board
L.MOTOR board
ENCODER board
CD board
L.SENSOR board
LED (R) board
LED (L) board
D.SENSOR board
BD board
C.MOTOR board
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.
Summary of Contents for HCD-L7HD
Page 39: ...39 39 HCD L7HD 6 7 Schematic Diagram MOTOR Section ...
Page 42: ...42 42 HCD L7HD 6 10 Schematic Diagram HDD1 Section 1 2 See page 62 for Wavefoms ...
Page 46: ...46 46 HCD L7HD 6 14 Schematic Diagram HDD2 Section 2 2 FOR MEMORY STICK NOT USED ...
Page 49: ...49 49 HCD L7HD 6 17 Schematic Diagram MAIN Section 1 2 See page 62 for Wavefoms ...
Page 55: ...55 55 HCD L7HD 6 23 Schematic Diagram AMP Section See page 62 for Wavefoms ...
Page 57: ...57 57 HCD L7HD 6 25 Schematic Diagram DISPLAY Section See page 62 for Wavefoms ...
Page 59: ...59 59 HCD L7HD 6 27 Schematic Diagram CONTROL Section See page 62 for IC Block Diagrams ...
Page 61: ...61 61 HCD L7HD 6 29 Schematic Diagram POWER Section ...
Page 95: ...95 HCD L7HD MEMO ...
