Sony STRDG820 - STR AV Receiver, Руководство по обслуживанию

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STR-DG820
STR-DG820
19 19
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.
•
5
:
fl
usible 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.
no mark : TUNER
• 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.
J
: AUDIO (DIGITAL)
F
: AUDIO (ANALOG)
f : TUNER
E
: VIDEO
• Abbreviation
CND :
Canadian model
ECE : Continental european, East European and
Russian models
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.)
• Indication of transistor.
C
B
These are omitted.
E
Q
C E B
These are omitted.
• Circuit Boards Location
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A) Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side) Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts 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.
JOG board
LED board
POWER SW board
STANDBY board
DCDC board
SPEAKER board
VIDEO board
HDMI board
XM board
(US, Canadian models)
CONNECTOR board
TUNER (FM/AM)
MICOM board
DSP board
DIGITAL AUDIO board
MAIN board
DISPLAY board
DCAC JACK board
FRONT V2 board
• HDMI board and DSP board are multi-layer printed boards.
However, the patterns of intermediate-layers have not
been included in diagrams.