Sony HCD-BX20I - Compact Disc Receiver Component, Service Manual

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HCD-BX20i/BX50BTi
HCD-BX20i/BX50BTi
25 25
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.
•
2
: non fl 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.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD board –
no mark: CD PLAY
– BT board –
no mark: BLUETOOTH
– IP board –
no mark: iPod
– Other board –
no mark: TUNER (FM/AM)
( ) : CD PLAY
[ ] : iPod
< > : BLUETOOTH
• 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
: AUDIO
f
: TUNER (FM/AM)
J
: CD PLAY
O
: iPod
E
: BLUETOOTH IN
j
: BLUETOOTH OUT
h
: AUDIO IN
• Abbreviation
AUS :
Australian model
CND : Canadian model
SP : Singapore model
For Printed Wiring Boards.
Note:
•
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:
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B) Parts on the parts face side seen from
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
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.
• Indication of transistor.
C
B
These are omitted.
E
Q
C E B
These are omitted.
• Circuit Boards Location
BT board (BX50BTi)
MAIN board
9VREG board
5VREG board
AMP board
IP board
TOP KEY board
ANT board (BX50BTi)
PANEL board
POER board
MOTOR board
HP board
CD board
VOL SELECT board (BX20i: Singapore model)
Caution:
Parts face side:
(Conductor Side)
Pattern face side:
(Component Side) Parts on the parts face side seen from
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
Ver. 1.1