Printed Wiring Boards And Schematic Diagrams - Sony MVC-FD81 Service Manual

MVC-FD81
MVC-FD81

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) (Measuring conditions voltage and waveform)
• b: Pattern from the side which enables seeing.
• Voltages and waveforms are measured between the measure-
(The other layers' patterns are not indicated.) ment points and ground when camera shoots color bar chart of
• Through hole is omitted. pattern box. They are reference values and reference wave-
• Circled numbers refer to waveforms.
forms. *
• There are few cases that the part printed on diagram
(VOM of DC 10 MW input impedance is used.).
isn't mounted in this model. • Voltage values change depending upon input impedance of VOM
• Chip parts. used.) *
Transistor Diode
C 6 5 4 4 5 6 4 5 1 2 3 3 3 1. Connection
B E 1 2 3 3 2 1 3 2 1 5 4 3 2 1 2 1 2 1
(For schematic diagrams)
• All capacitors are in µF unless otherwise noted. pF : µµF.
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, Be-
cause it is damaged by the heat.
• Some chip part will be indicated as follows.
Example C541 L452
22U 10UH
TA A 2520
2. Adjust the distance so that the output waveform of Fig. a and
Kinds of capacitor
the Fig. b can be obtain.
A=B
Temperature characteristics
External dimensions (mm) A
• Constants of resistors, capacitors, ICs and etc with XX indicate
that they are not used.
In such cases, the unused circuits may be indicated.
• Parts with differ according to the model/destination.
Refer to the mount table for each function.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
• Signal name
XEDIT → EDIT PB/XREC → PB/REC
• 2 : non flammable resistor
Fig. a (CPC-9 jig TP-VG output waveform)
• 1 : fusible resistor
• C : panel designation
• A : B+ Line *
• B : B– Line *
• J : IN/OUT direction of (+,–) B LINE. *
• C : adjustment for repair. *
• Circled numbers refer to waveforms. *
* Indicated by the color red.
Note : Note :
The components identified by Les composants identifiés par
Fig.b (Picture on LCD)
mark ! or dotted line with mark une marque ! sont critiques
! are critical for safety. pour la sécurité.
When indicating parts by reference number, pleas include
Replace only with part number Ne les remplacer que par une
specified. pièce portant le numéro spécifié. the board name.
4-5
CD-206 (CCD IMAGER) PRINTED WIRING BOARD
— Ref. No. CD-206 Board; 2,000 Series —
Pattern box
About 90 cm
Front side of the lens
B
C=D
C
D
H H
Electron beam
scanned frame
LCD picture frame
CCD IMAGER
CD-206
CD-206 BOARD
C431 A-4
C432 B-3
C433 A-4
C434 B-3
C435 A-3
C436 A-4
CN431 B-4
IC431 A-1
For printed wiring boards
CD-206
PK-44
• This board is six-layer print board. However, the pat-
(CCD IMAGER)
REC/PB AMP, LCD DRIVE,
terns of layers two to five have not been included in TIMING GENERATOR,
BACK-LIGHT DRIVE,
the diagram.
MODE KEY SWITCH
• Chip parts
Transistor
C
FC-67
CAMERA Y/C PROCESS,
DRAM CONTROL, LENS MOTOR DRIVE,
B E
D/A CONVERTER, AUDIO A/D.D/A CONVERTER,
FD/SYSTEM CONTROL, HI CONTROL
There are few cases that the part printed on this
diagram isn't mounted in this model.
4-6
L431 B-4
Q431 B-4
R431 B-3
R432 B-4
R433 B-4
R434 A-4
R435 A-3
R436 A-3