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Note For Printed Wiring Boards and Schematic Diagrams
Note on Printed Wiring Board:
X : parts extracted from the component side.
Y : parts extracted from the conductor side.
f
: internal component.
: 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
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Indication of transistor
C
Q
These are omitted.
B
E
Q
B
C E
These are omitted.
HCD-GX470/GX570
Note on Schematic Diagram:
All capacitors are in F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
All resistors are in
and
1
/
W or less unless otherwise
4
specified.
f
: internal component.
2 : nonflammable resistor.
5 : fusible resistor.
C : panel designation.
Note:
Note:
The components identi-
Les composants identifiés par
fied by mark 0 or dotted
une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
cal for safety.
Ne les remplacer que par une
Replace only with part
pièce por tant le numéro
number specified.
spécifié.
A : B+ Line.
B : B– Line.
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark :CD PLAY
– XM Board –
no mark : XM
– Other Boards –
no mark : TUNER (FM/AM)
(
) : CD PLAY
: TAPE PLAY
{
} : TAPE REC
[
] : XM
: Impossible to measure
Voltages are taken with a VOM (Input impedance 10 M ).
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
: TUNER (FM/AM)
J
: CD PLAY
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: REC
O
: XM
f
: AUDIO IN
Circuit Boards Location
MOTOR (LD) board
KEY LEFT board
PANEL board
MIC. AUX. HP board
TRANSFORMER board
27
27
HCD-GX470/GX570
SW board
CD board
SENSOR board
MOTOR (TB) board
KEY RIGHT board
XM board
(GX570)
SUB WOOFER board
SW-SP board
MAIN board
POWER board
DECK board
DRIVER board
TUNER (FM/AM)
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