Read Sony CMT-EH15 / HCD-EH15 Service Manual online
HCD-EH15
HCD-EH15
13
13
• Circuit Board Location
MAIN board
PANEL board
CD board
PT-AC board
VOLTAGE-SEL board
(Chilean, Peruvian, Brazilian
and Singapore models)
(Chilean, Peruvian, Brazilian
and Singapore models)
• Waveforms
– CD Board –
– CD Board –
IC101 JB (RFi)
(CD play mode)
(CD play mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p
IC101 XG (XO)
(CD play mode)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.1 ns
14.6 Ms
3.3 Vp-p
RE
Q507 (Collector)
(Tape REC mode)
5 V/DIV, 10 Ms/DIV
9.8 Vp-p
RB
IC801 X (XOUT)
1 V/DIV, 10
μs/DIV
13.4
μs
1.2 Vp-p
RT
IC861 RG (XOUT)
2 V/DIV, 100 ns/DIV
230 ns
5 Vp-p
XB
IC701 RG (X3)
2 V/DIV, 20
μs/DIV
30.8
μs
3 Vp-p
XT
IC701 PT (X1)
2 V/DIV, 100 ns/DIV
182 ns
3.4 Vp-p
– MAIN Board –
– PANEL Board –
SECTION 7
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi 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.)
(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
• 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
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
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
FM
f :
AM
J
: CD PLAY
E :
TAPE
PLAY
:
REC
h :
AUDIO
IN
• Abbreviation
AR :
AR :
Argentina
model
AUS :
Australian
model
BR
: Brazilian model
CND :
Canadian
model
E51
: Chilean and Peruvian model
KR
: Korean model
MX
: Mexican model
RU :
Russian
model
SP
: Singapore model
TH :
Thai
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 identifi ed with part number.
• f :
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• W : indicates side identifi 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
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
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.
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Ver. 1.1
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