Printed Wiring Board - Sony DCR-PC2E Service Manual

DCR-PC2E/PC3/PC3E
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 par t printed on diagram (VOM of DC 10 M 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
Pattern box
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 mF unless otherwise noted. pF : m mF. 50V
or less are not indicated except for electrolytics and tantalums.
• Chip resistors are 1/10W unless otherwise noted.
1.5 m
kW=1000W, MW=1000kW.
• 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
Front of the lens
TA A 2520
Kinds of capacitor
Temperature characteristics
2. Adjust the distance so that the output waveform of Fig. a and
External dimensions (mm)
the Fig. b can be obtain.
H
• 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 B A=B B
• A : B+ Line
• B : B– Line Fig. a (Video output terminal output waveform)
• J : IN/OUT direction of (+,–) B LINE.
• C : adjustment for repair.
• Circled numbers refer to waveforms.
Note : Note :
The components identified by Les composants identifiés par
mark ! or dotted line with mark une marque ! sont critiques
! are critical for safety. pour la sécurité.
Replace only with part number Ne les remplacer que par une
specified. pièce portant le numéro spécifié.
Fig.b (Picture on monitor TV)
When indicating parts by reference number, pleas include
the board name.
4-5
CD-221 (CCD IMAGER) PRINTED WIRING BOARD
— Ref. No. CD-221 Board; 4,000 Series —
CD-221 BOARD
C450 E-5
C451 E-5
C453 D-5
C455 E-6
C461 E-5
C465 E-6
C468 B-6
CN451 D-1
IC450 F-5
L450 E-5
Q450 E-6
R450 D-5
R451 D-5
R454 E-6
R464 D-6
R466 D-5
R467 D-5
For printed wiring boards
• This board is six-layer print board. However, the pat-
terns of layers two to five have not been included in
the diagram.
• Chip parts
Transistor
C
B E
There are few cases that the part printed on this
diagram isn't mounted in this model.
VF-136
(BACK-LIGHT DRIVE)
CD-221
(CCD IMAGER)
A
PD-112
RGB DECODER,
TIMING GENERATOR
PR-32
(PANEL REVERSE)
Electron beam
INVERTER
scanned frame
TRANSFORMER UNIT
CRT picture frame
PO-4
(PANEL OPEN)
CCD IMAGER
4-6
CD-221
CD-221
BOARD
CAMERA REC
1
2 3
IC450 1,2 IC450 3,4 IC450 !º
6.8Vp-p
6.8Vp-p
H
H
56nsec
4-7
6
4 5
Q450 E
IC450 !¡,!™ IC450 !£
17Vp-p
2.7Vp-p H
3Vp-p
56nsec
H 0.96Vp-p
4-8