Sony HCD-EC68P Service Manual - Page 27

For Schematic Diagrams., For Printed Wiring Boards.

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THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For Printed Wiring Boards. Note: • X : Parts extracted from the component side. • Y : Parts extracted from the conductor side. • W : indicated side identified with part number. • f : Internal component. • : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Parts face side: Parts on the parts face side seen from (Conductor Side) the pattern face are indicated. Pattern face side: Parts on the pattern face side seen from (Component Side) the parts face are indicated. • Indication of transistor. C Q These are omitted. BE Q BCE These are omitted. 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 specified. • f : internal component. • 2: nonflammable resistor. • C : panel designation. 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. • C : 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 a 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 : FM f : AM J : CD PLAY i : AUDIO IN g : DMPORT • Abbreviation AUS : Australian model CND : Canadian model • Circuit Boards Location PANEL board KEY POWER board MAIN board HCD-EC68P/EC78P HI AMP board (EC78P) LOW AMP board KEY CD board JACK board DMP board PT board CD board REG board MOTOR board (EXCEPT EC78P: UK) HCD-EC68P/EC78P 27 27

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HCD-EC68P/EC78P
HCD-EC68P/EC78P
27
27
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.
•
C
: 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 a 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
: FM
f
: AM
J
: CD PLAY
i
: AUDIO IN
g
: DMPORT
• 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
: indicated side identi
fi
ed with part number.
•
f
: Internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
• Circuit Boards Location
KEY POWER board
PANEL board
MAIN board
HI AMP board (EC78P)
LOW AMP board
PT board
REG board
JACK board
DMP board
KEY CD board
CD board
MOTOR board (EXCEPT EC78P: UK)
B
These are omitted.
C
E
Q
The components identi
fi
ed by mark
0
or dotted line with
mark
0
are critical for safety.
Replace only with part number speci
fi
ed.
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.