Printed Wiring Boards And Schematic Diagrams; Frame Schematic Diagram - Sony DVP-K800D Service Manual

SECTION 4

PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

4-1. FRAME SCHEMATIC DIAGRAM

4-1 4-2
DVP-K800D
4-2. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR WIRING BOARDS
AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
(For printed wiring boards)
• b: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Through hole is omitted.
• Circled numbers refer to waveforms.
• There are few cases that the part printed on diagram
isn't mounted in this model.
• Chip parts.
C 6 5 4 4 5 6 4 5 1 2 3 3 3
B E 1 2 3 3 2 1 3 2 1 5 4 3 2 1 1 2 1
2
Transistor Diode
(For schematic diagrams)
• All capacitors are in µF unless otherwise noted. pF : µ
µF. 50V or less are not indicated except for electrolytics
and tantalums.
• Chip resistors are 1/10W unless otherwise noted.
kΩ=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, Because it is damaged by the heat.
• Some chip part will be indicated as follows.
Example C541 L452
22U 10UH
TA A 2520
Kinds of capacitor
Temperature characteristics
External dimensions (mm)
• Constants of resistors, capacitors, ICs and etc with XX
indicate that they are not used.
In such cases, the unused circuits may be indicated.
• All variable and adjustable resistors have characteristic
curve B, unless otherwise noted.
• Signal name
XEDIT → EDIT PB/XREC → PB/REC
• 2: non flammable resistor
• 1: fusible resistor
• C: panel designation
• A/U : B+ Line
• B/V : B– Line
• J : IN/OUT direction of (+,–) B LINE.
• C: adjustment for repair.
• Circled numbers refer to waveforms.
• Readings are taken with a color-bar signal playback.
• Voltage are dc between ground and measurement points.
• Readings are taken with a digital multimeter (DC10MΩ).
• Voltage variations may be noted due to normal production
tolerances.
Note:
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
FRAME SCHEMATIC DIAGRAM
4-3