DVP-F21
4-1
SECTION 4
PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary mote is printed in
each block.)
For printed wiring boards:
•
: indicates a lead wire mounted on the component side.
•
: indicates a lead wire mounted on the printed side.
•
: Through hole.
•
: 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
(Side A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side B)
the 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 minus side of tantalum capacitor,
because it is damaged by the heat.
• All resistors are in ohms, 1/4 W (Chip resistors : 1/10 W) un-less
otherwise specified.
k
Ω
: 1000
Ω
, M
Ω
: 1000k
Ω
.
• All capacitors are in
µ
F unless otherwise noted. pF :
µµ
F
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.
•
: panel designation.
•
f
: internal component.
•
: adjustment for repair.
•
: B+ Line.
•
: B– Line.
• Circled numbers refer to waveforms.
• Voltages are dc between measurement point.
• Readings are taken with a color-bar signal on DVD refer-ence
disc and when playing CD reference disc.
• Readings are taken with a digital multimeter (DC 10M)
• Voltage variations may be noted due to normal production
tolerances.
B+
B–
Note:
The components identi-
fied by mark
!
or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.
When indicating parts by
reference number, please include
the board name.