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Sony HCD-EC79i - Printed Wiring Board and Schematic Diagram Notes

Sony HCD-EC79i
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HCD-EC69i/EC79i/EC99i
HCD-EC69i/EC79i/EC99i
2727
For Schematic Diagrams.
Note:
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 1/4 W or less unless otherwise
speci ed.
f
: internal component.
2 : non ammable resistor.
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.
B : 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 Boards –
no mark
: TUNER (FM/AM)
Voltages are taken with VOM (Input impedance 10 MΩ).
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 : TUNER (FM/AM)
J : CD PLAY
i : iPod
f : PC IN
• Abbreviation
AUS : Australian model
CND : Canadian model
For Printed Wiring Boards.
Note:
X : parts extracted from the component side.
Y : parts extracted from the conductor side.
W : indicates side identi ed with part number.
: 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.
CE
Q
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
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.
Note:
The components identi-
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number speci ed.
Note:
Les composants identi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spéci 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.
• Abbreviation
AUS : Australian model
CND : Canadian model
Circuit Boards Location
LOARDING board
MAIN board
JACK board
REG board
PT-SINGLE board
PT-SINGLE board
JACK board
IP board
IP board
CD board
CD board
PANEL board
PANEL board
KEY board
KEY board
2CH-4CH AMP board
2CH-4CH AMP board (EC99i)
3CH AMP board (EC99i)
2CH-4CH AMP board (EC79i)
MAIN board
EC79i/EC99i
EC69i
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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