Printed Wiring Boards - Sony AC-V500 Service Manual

AC-V500 :
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:
* O—_ : Indicated a lead wire mounted on the component side.
* ——_ : indicated a lead wire mounted on the conductor side.
: Parts mounted on the conductor side.
: : Printed resistor.
: Pattern from the side
which enables seeing.
* Eee= : Pattern of the rear side.*
¢ Circled numbers refer to waveforms.*
¢ {B) or (F), etc. of capacitors indicate the temperature characteristics.
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 the
(Component side) _ parts face are indicated.
For schematic diagram:
¢ Caution when replacing chip parts.
New parts must be attached after removal of chip.
Be careful not to heat the minuts side of tantalum capacitor, because it
is damaged by the heat.
¢ Allresistors arein ohms, 1/4W (Chip resistors: 1/10W) unless otherwise
noted. .
kQ: 1000Q, MQ: 1000kQ
° All capacitors are in uF unless otherwise noted. pF: nuF 50V or less are
not indicated except for electrolytics and tantalums.
¢ All variable and adjustable resistors have characteristic curve B, unless
otherwise noted.
° : Nonflammable resistor
: Fusible resistor
: Printed resistor.
: Panel designation
't Internal component
:B+Line
: Adjustment for repair
¢ Voltages are DC between measurement points and ground unless
otherwise noted.*
¢ Readings are taken with a color-bar signal input.*
¢ Readings are taken with a digital multimeter (DC10MQ).*
¢ Voltage variations may be noted due to normal production tolerances.*
* Circied numbers refer to waveforms
GO
* : Indicated by the color red
When indicating parts by reference
number, please include the board name.
Note: Note:
Thecomponentsidentified Les composants identifiés par une
_ by mark A\ or dotted line marque A\ sont critiques pour la
with mark A\ are critical sécurité.
for safetry. | Ne les remplacer que par une
Replace only with part piéce portant le numéro spécifié.
number specified.
|
|
|
2-3, PRINTED WIRING BOARDS
«See page 6 for semiconductor lead layouts.
@ SEMICONDUCTOR LOCATION
[Reto | tosslon [ RetiNo, | Ueetion