COVER
COVER
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.
Transistor
Diode
C
6
5
4
4
5
6
4
5
1
2
E
B
3
3
B
E
1
2
3
3
2
1
3
2
1
5
4
3
C
C
2
1
2
1
(For schematic diagrams)
• All capacitors are in µF unless otherwise noted. p: pF.
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
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 : 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
mark 0 or dotted line with mark
une marque 0 sont critiques
0 are critical for safety.
pour la sécurité.
Replace only with part number
Ne les remplacer que par une
specified.
pièce portant le numéro spécifié.
4-2. SCHEMATIC DIAGRAMS
4-2. SCHEMATIC DIAGRAMS
(Measuring conditions voltage and waveform)
• Voltages and waveforms are measured between the measure-
ment points and ground when camera shoots color bar chart of
pattern box. They are reference values and reference wave-
forms. *
(VOM of DC 10 MΩ input impedance is used.).
• Voltage values change depending upon input impedance of VOM
used.) *
3
2
1
1. Connection
Pattern box
2
1
3
4
1.5 m
Front of the lens
2. Adjust the distance so that the output waveform of Fig. a and
the Fig. b can be obtain.
H
A
B
A=B
B
A
Fig. a (Video output terminal output waveform)
Electron beam
scanned frame
CRT picture frame
Fig.b (Picture on monitor TV)
When indicating parts by reference number, please include
the board name.
4-9
4-3. PRINTED WIRING BOARDS
4-3. PRINTED WIRING BOARDS
DCR-TRV40/TRV40E/TRV50/TRV50E