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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.
• Circuit Boards Location
MAIN board
AC-SW board
PT-AC board
PANEL board
HCD-EH10
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.
•
: internal component.
f
• 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.
• H : Adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
– CD Board –
no mark : CD PLAY
– Other Section –
no mark : FM
[
] : AM
(
) : CD PLAY
〈〈
〉〉 : TAPE PLAY
{
} : REC
• 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
CD board
f
: AM
J
: CD PLAY
E
: TAPE PLAY
j
: REC
i : AUX IN
• Abbreviation
AUS : Australian model
CND : Canadian model
EE
: East European model
KR
: Korean model
RU
: Russian model
SP
: Singapore model
TW
: Taiwan model
• Waveforms
– CD Board –
IC201 1 (LRCK)
1
(CD PLAY mode)
3.3 Vp-p
22.8 µ s
1 V/DIV, 10 µ s/DIV
IC201 5 (BCK)
2
(CD PLAY mode)
3.3 Vp-p
472 ns
1 V/DIV, 200 ns/DIV
IC201 u; (RFACO)
3
(CD PLAY mode)
0.5 to 1.3 Vp-p
200 mV/DIV, 500 ns/DIV
IC201 <z/, (XTAO)
4
(CD PLAY mode)
2.3 Vp-p
59.4 ns
1 V/DIV, 20 ns/DIV
17
17
– MAIN Board –
– PANEL Board –
IC801 w; (XOUT)
IC701 qf (X1A)
qa
wa
(tuner mode)
1.6 Vp-p
13.3 µ s
500 mV/DIV, 5 µ s/DIV
IC861 qf (XOUT)
IC701 os (X1)
qs
ws
(FM mode)
4 Vp-p
230 ns
1 V/DIV, 100 ns/DIV
HCD-EH10
Ver. 1.4
3.2 Vp-p
30.6 µ s
1 V/DIV, 10 µ s/DIV
3.1Vp-p
239 ns
1 V/DIV, 100 ns/DIV
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