Diagrams; 7-1. Circuit Board Location - Sony HCD-BX3 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
¢
• C : panel designation.
Note: Note:
The components identi- Les composants identifiés par
fied by mark ! or dotted une marque ! sont critiques
line with mark ! are criti- pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce portant le numéro
number specified. spécifié.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• 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
: FM
T E
L 1 3 9 4 2 2 9 6 5 1 3
f
: AM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J : CD
c : digital out
• Abbreviation
CND : Canadian model
AUS : Australian model
G : German model
AED : North European model
EA : Saudi Arabia model
MY : Malaysia model
SP : Singapore model
TH : Thai model
TW : Taiwan model
KR : Korea model
MX : Mexican model
AR : Argentina model
w w w
.
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SECTION 7

DIAGRAMS

Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
• Indication of transistor.
C
These are omitted. Q
B E
Q
B C E
These are omitted.
x a o u 1 6 3
y
i
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8 9

7-1. CIRCUIT BOARD LOCATION

ADDRESS SENSOR Board
TRANS Board
PANEL Board
LEAF SW Board
HEAD (A) Board
Q Q
3 7 6 3 1 5 1
• WAVEFORMS
– BD BOARD –
1 3
IC101 yj IC101 ra
CD PLAY MODE CD PLAY MODE
6.4Vp-p
16.9344MHz
2 4
IC101 ta IC101 el
CD PLAY MODE CD PLAY MODE
1.2Vp-p
400nsec/div
c o
.
21 21
2 4 2
9 8
MOTOR Board
DRIVER Board
SUB-TRANS Board
BD Board
AMP Board
5 0 8 9 2 4 9 8 2
HEAD (B) Board
– MAIN BOARD –
1
T301 4 REC MODE
135Vp-p
approx 200mVp-p
81kHz
2
IC401 qd STOP MODE
approx 170mVp-p
4.0Vp-p
16.0MHz
m
3
IC401 qa STOP MODE
3.0Vp-p
32.768kHz
HCD-BX3/DX3
9 9
MAIN Board
9 9
– PANEL BOARD –
1
IC601 oa STOP MODE
5.2Vp-p
12.5MHz