4-3
DSC-W70_L3
4-2. SCHEMATIC DIAGRAMS
4-2. SCHEMATIC DIAGRAMS
4-2. SCHEMATIC DIAGRAMS
1. Connection
2. Adjust the distance so that the output waveform of
Fig. a and the Fig. b can be obtain.
When indicating parts by reference number, please
include the board name.
(For schematic diagrams)
• All capacitors are in
µ
F unless otherwise noted. pF :
µ
µ
F. 50 V or less are not indicated except for electrolytics
and tantalums.
• Chip resistors are 1/10 W unless otherwise noted.
k
Ω
=1000
Ω
, M
Ω
=1000 k
Ω
.
• 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
• 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
•
5
: fusible resistor
•
C
: panel designation
•
A
: B+ Line
•
B
: B– Line
•
J
: IN/OUT direction of (+,–) B LINE.
•
C
: adjustment for repair.
•
A
: not use circuit
(Measuring conditions voltage and waveform)
• Voltages and waveforms are measured between the
measurement points and ground when camera shoots
color bar chart of pattern box. They are reference values
and reference waveforms.
(VOM of DC 10 M
Ω
input impedance is used)
• Voltage values change depending upon input
impedance of VOM used.)
Kinds of capacitor
Case size
External dimensions (mm)
Ye
llo
w
A
A
B
B
A=B
Fig. a (Video output terminal output waveform)
H
Cy
an
Green
White
Magenta
Red
Blue
Fig.b (Picture on monitor TV)
CRT picture frame
Electronic beam
scanning frame
THIS NOTE IS COMMON FOR SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
Pattern box
Pattern box PTB-450
J-6082-200-A
or
Small pattern box
PTB-1450
J-6082-557-A
Color bar chart
For PTB-450:
J-6020-250-A
For PTB-1450:
J-6082-559-A
Pattern box
Front of the lens
L = 30 cm (PTB-450)
L = 12 cm (PTB-1450)
L
Camera
Precautions for Replacement of Imager
• If the imager has been replaced, carry out all the adjustments
for the camera section.
• As the imager may be damaged by static electricity from
its structure, handle it carefully like for the MOS IC.
In addition, ensure that the receiver is not covered with
dusts nor exposed to strong light.
The components identified by mark
0
or dotted line with
mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que par une pièce portant le numéro
spécifie.
4. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
