HCD-EH15
HCD-EH15
13
13
• Circuit Board Location
MAIN board
PANEL board
CD board
PT-AC board
VOLTAGE-SEL board
(Chilean and Peruvian, Singapore models)
• Waveforms
– CD Board –
IC101
JB
(RFi)
(CD play mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p
IC101
XG
(XO)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.1 ns
14.6
M
s
3.3 Vp-p
RE
Q507 (Collector)
(Tape REC mode)
5 V/DIV, 10
M
s/DIV
9.8 Vp-p
RB
IC801
X
(XOUT)
1 V/DIV, 10
μ
s/DIV
13.4
μ
s
1.2 Vp-p
RT
IC861
RG
(XOUT)
2 V/DIV, 100 ns/DIV
230
n
s
5 Vp-p
XB
IC701
RG
(X3)
2 V/DIV, 20
μ
s/DIV
30.8
μ
s
3 Vp-p
XT
IC701
PT
(X1)
2 V/DIV, 100 ns/DIV
182
n
s
3.4 Vp-p
– MAIN Board –
– PANEL Board –
SECTION 7
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in
μ
F unless otherwise noted. (p: pF) 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
speci
fi
ed.
•
f
:
internal
component.
•
C
: panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•
A
: B+ Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark : CD PLAY
– Other Section –
no mark : FM
[ ] : AM
( ) : CD PLAY
< > : TAPE PLAY
{ } : REC
• Voltages are taken with VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
:
FM
f
:
AM
J
: CD PLAY
E
:
TAPE
PLAY
:
REC
h
:
AUDIO
IN
• Abbreviation
AR :
Argentina
model
AUS :
Australian
model
CND :
Canadian
model
E51
: Chilean and Peruvian model
KR
: Korean model
MX
: Mexican model
RU :
Russian
model
SP
: Singapore model
TW :
Taiwan
model
For Printed Wiring Boards.
Note:
•
X
: Parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identi
fi
ed with part number.
•
f
:
internal
component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C E
Q
Note:
The components identi-
fi
ed by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number speci
fi
ed.
Note:
Les composants identi
fi
és
par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spéci
fi
é.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.