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4-1. SCHEMATIC DIAGRAMS
4-1. SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR SCHEMATIC DIAGRAMS (In addition to this, the necessary note is printed in each block)
(For schematic diagrams) � All capacitors are in µF unless otherwise noted. pF : µ µF. 50 V or less are not indicated except for electrolytics and tantalums. � Chip resistors are 1/10 W unless otherwise noted. k�=1000 �, M�=1000 k�. � 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
L Camera
1. Connection
Pattern box
Color bar chart Pattern box PTB-450 J-6082-200-A or Small pattern box PTB-1450 J-6082-557-A For PTB-450: J-6020-250-A For PTB-1450: J-6082-559-A
L = About 30 cm (PTB-450) L = About 13 cm (PTB-1450) Pattern box Front of the lens
Kinds of capacitor External dimensions (mm) Case size � 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 � Circled numbers refer to waveforms. (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� input impedance is used) � Voltage values change depending upon input impedance of VOM used.) 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.
2. Adjust the distance so that the output waveform of Fig. a and the Fig. b can be obtain.
H
Yellow Cyan Green White Magenta
AB A=B BA Fig. a (Video output terminal output waveform)
Red Blue
Electronic beam scanning frame CRT picture frame Fig.b (Picture on monitor TV)
When indicating parts by reference number, please include the board name. 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.
DCR-DVD105/DVD105E/DVD605/DVD605E_L3 4-1
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