Sony HCD-BX5BT Service Manual page 25

• 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.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
• Indication of transistor
C
Q These are omitted.
B E
Q
B C E
These are omitted.
HCD-BX5BT/CBX1/CBX3
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
• 2 : nonflammable resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
– CD Board –
no mark : CD PLAY
[ ] : USB
– USB Board –
no mark : USB
– BT Board –
no mark : BLUETOOTH
– Other Boards –
no mark : TUNER (FM/AM)
( ) : CD PLAY
[ ] : BLUETOOTH
• 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 : AUDIO
f : TUNER (FM/AM)
J : CD PLAY
d
: USB
E
: BLUETOOTH IN
j
: BLUETOOTH OUT
h : AUDIO IN
• Circuit Boards Location
MAIN board
TOP PANEL board
FRONT PANEL board
(CBX3)
USB board
HEADPHONE board
REGULATOR board
(BX5BT)
BT board
ANT board
MOTOR board
25 25
HCD-BX5BT/CBX1/CBX3
POWER board
SPEAKER board
tuner (FM/AM)
AMP board
5V REGULATOR board
CD board
(BX5BT/CBX3)