Circuit Boards Location; Note For Printed Wiring Boards And Schematic Diagrams - Sony AVD-S50 Service Manual

AVD-S50/S50ES

5-2. CIRCUIT BOARDS LOCATION

POWER SW board
POWER board
RM board
HEADPHONE board
DISPLAY board
LED board
LOADING board
SP board
DIGITAL AMP board
VIDEO board(US,Canadian model)
RGB board(AEP,UK model)
DIGITAL I/O board
ANALOG I/O board
DVD board
RF board

5-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• 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
specified.
• f : internal component.
• C : panel designation.
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
TUNER unit
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : DVD PLAY
( ) : CD PLAY
[ ] : SACD PLAY
∗
: 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.
J : CD PLAY
c : DVD PLAY
I : SACD PLAY
f
: AUX IN
i : OPTICAL DIGITAL IN
d
: TUNER
F : AUDIO
L : VIDEO
E
: Y
a
: CHROMA
r : COMPONENT VIDEO
• Abbreviation
CND : Canadian model.
40 40
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
a : Through hole.
1 / W or less unless otherwise • : Pattern from the side which enables seeing.
4
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
Note:
(Side B) pattern face are indicated.
Les composants identifiés par
Parts face side: Parts on the parts face side seen from the
une marque 0 sont critiques
(Side A) parts face are indicated.
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
C
spécifié.
Q
These are omitted
B E
B E C
These are omitted
E C B
These are omitted
• Abbreviation
CND : Canadian model.