Sony Cyber-shot DSC-U50, Service Manual

Page: 32 / 65

4-5
DSC-U50
COVER
COVER
4-2. SCHEMATIC DIAGRAMS
4-2. SCHEMATIC DIAGRAMS
Link
(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
: VIDEO SIGNAL (ANALOG)
•
A
: AUDIO SIGNAL (ANALOG)
•
A
: VIDEO/AUDIO SIGNAL
•
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 M
Ω input impedance is used)
• Voltage values change depending upon input
impedance of VOM used.)
1. Connection
2. Adjust the distance so that the display of Fig. a can be
obtain.
When indicating parts by reference number, please
include the board name.
THIS NOTE IS COMMON FOR SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
Kinds of capacitor
Case Size
External dimensions (mm)
Note : Les composants identifiés par une marque
0
sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifie.
Note : The components identified by mark
0
or
dotted line with mark
0
are critical for safety.
Replace only with part number specified.
4-2. SCHEMATIC DIAGRAMS
Front of the lens
Pattern box
L
L = About 30 cm
A B B
C
D
A
A=B
C=D
Fig.a (Picture on LCD display)