Sony DCR-DVD91E Service Manual page 8

(ENGLISH)
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
Link
µF. 50 V or less are not indicated except for electrolytics
and tantalums.
• Chip resistors are 1/10 W unless otherwise noted.
kΩ=1000 Ω, MΩ=1000 kΩ.
• 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
22U
TA A
Kinds of capacitor
Temperature characteristics
• 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
• 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: VIDEO SIGNAL (ANALOG)
• A: AUDIO SIGNAL (ANALOG)
• A: VIDEO/AUDIO SIGNAL (ANALOG)
• A: VIDEO/AUDIO/SERVO SIGNAL
• A: SERVO SIGNAL
• 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 MΩ input impedance is used)
• Voltage values change depending upon input
impedance of VOM used.)
Precautions Upon Replacing CCD imager
• The CD-503 board mounted as a repair part is not equipped
with a CCD imager.
When replacing this board, remove the CCD imager from
the old one and mount it onto the new one.
• If the CCD imager has been replaced, carry out all the
adjustments for the camera section.
• As the CCD 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.
4-2. SCHEMATIC DIAGRAMS
4-2. SCHEMATIC DIAGRAMS
L452
10UH
2520
External dimensions (mm)
PB/XREC → PB/REC
DCR-DVD91E/DVD101/DVD101E
1. Connection
Pattern box
Front of the lens
2. Adjust the distance so that the output waveform of
Fig. a and the Fig. b can be obtain.
A B
Fig. a (Video output terminal output waveform)
Fig.b (Picture on monitor TV)
When indicating parts by reference number, please
include the board name.
Note :
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
4-9
ENGLISH JAPANESE
ENGLISH JAPANESE
1.0 m
H
A=B B A
Note :
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.