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Q Q
3 7 6 3 1 5 1 5 0
• 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.
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
HCD-GX470/GX570
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
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.
•
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 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
: TUNER (FM/AM)
J
: CD PLAY
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: REC
O
: XM
f
: AUDIO IN
x
a o
y
.
i
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8
• Circuit Boards Location
KEY LEFT board
PANEL board
MIC. AUX. HP board
Q
Q
3
7
6
3
TRANSFORMER board
u 1 6 3
.
27
27
http://www.xiaoyu163.com
2
4
9
9
8
SW board
MOTOR (LD) board
KEY RIGHT board
1
5
1
5
0
8
9
2
4
XM board
(GX570)
m
DECK board
c o
HCD-GX470/GX570
2
9
9
CD board
SENSOR board
DRIVER board
TUNER (FM/AM)
MOTOR (TB) board
9
8
2
9
9
SUB WOOFER board
SW-SP board
MAIN board
POWER board
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