Sony HCD-GPX9 Service Manual page 26

HCD-GPX9
Ver. 1.1
Q Q
3 7 6 3 1 5 1 5 0
• 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.
•
W : indicates side identified with part number.
•
: internal component.
f
•
: 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.
• Indication of transistor
C
Q These are omitted.
B E
Q
B C E
These are omitted.
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
HCD-GPX9
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.
• 5 : fusible 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.
– BD Board –
no mark : CD PLAY
– Other Boards –
no mark : FM
( ) : CD PLAY
[ ] : TAPE PLAY
〈〈 〉〉 : TAPE REC
{ } : DAB
∗
: Impossible to measure
• 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 : TUNER (FM/AM)
E : TAPE PLAY
a : TAPE REC
J
: CD PLAY
L : AUX IN
f
: DAB
• Abbreviation
EE : East European model
x a o
y
. i
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• Circuit Boards Location
DRIVER board
PANEL (1) board
module (DAB TUNER)
DAB board
PANEL (2) board
Q Q
3 7 6 3
u 1 6 3
.
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2 4
9 9 8
AMP board
POWER board
BD board
1 5 1 5 0 8 9 2 4
m
c o
2
9 9
MAIN board
SWITCHING
REGULATOR
TUNER
9 8 2 9 9