Read Sony DVP-PQ2 (serv.man2) Service Manual online
DVP-PQ2
4-1
4-2
SECTION 4
PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
For printed wiring boards
•
•
: indicates a lead wire mounted on the component side.
•
: indicates a lead wire mounted on the printed side.
• a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
THIS NOTE IS COMMON FOR WIRING BOARDS AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
(In addition to this, the necessary note is printed in each block)
When indicating parts by reference number, please include
the board name.
the board name.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B)
Pattern face side: Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
(For schematic diagrams)
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. pF : µµF.
50V or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in ohms, 1/4W (Chip resistors : 1/10W) un-less
otherwise specified.
k
Ω = 1000Ω, MΩ = 1000kΩ.
• 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,
Be careful not to heat the minus side of tantalum capacitor,
because it is damaged by the heat.
• All variable and adjustable resistors have characteristic curve
B, unless otherwise noted.
•
: non flammable 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 signals on DVD reference
• Voltages are dc between measurement point.
• Readings are taken with a color-bar signals on DVD reference
disc and when playing CD reference disc.
• Readings are taken with a digital multimeter (DC 10M
Ω).
• Voltage variations may be noted due to normal production tol-
erances.
4-1. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note :
The components identified by
mark
The components identified by
mark
or dotted line with mark
are critical for safety.
Replace only with part number
specified.
specified.
Note :
Les composants identifiés par
une marque
Les composants identifiés par
une marque
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
Ne les remplacer que par une
pièce portant le numéro spécifié.
• Abbreviation
CND : Canadian model
MX : Mexican model
AE1 : AEP model
AE2 : AEP model
UK
MX : Mexican model
AE1 : AEP model
AE2 : AEP model
UK
: United Kingdom model
B +
B –
B –
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