DSC-U20 (serv.man3) - Sony Digital Camera Service Manual (repair manual). Page 2

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SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 
0
 OR DOTTED LINE WITH
MARK 
0
 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 
0
 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
1.
Check the area of your repair for unsoldered or poorly-soldered
connections.  Check the entire board surface for solder splashes
and bridges.
2.
Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3.
Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair.  Point
them out to the customer and recommend their replacement.
4.
Look for parts which, through functioning, show obvious signs
of deterioration.  Point them out to the customer and
recommend their replacement.
5.
Check the B+ voltage to see it is at the values specified.
6.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
DSC-U20
SPECIFICATIONS
COVER
COVER
System
Image device
6.72 mm (1/2.7 type) color CCD
Primary color filter
Total pixels number of camera
Approx. 2 110 000 pixels
Effective pixels number of camera
Approx. 2 020 000 pixels
Lens
Single focal lens
f = 5.0 mm (7/32 inches) (35 mm camera 
conversion: 33 mm (1 5/16 inches))
F2.8
Exposure control
Automatic, Scene selection (three modes)
Data formats
Still images: DCF compliant 
(Exif Ver. 2.2 JPEG compliant), 
DPOF compatible
Movies: MPEG1 compliant (without audio)
Recording media
“Memory Stick”
Flash
Recommended distance: 0.5 m to 1.8 m (1.6 to 
6.0 ft)
Connector
USB jack
mini-B
LCD screen
LCD panel used
2.5 cm (1.0 type) TFT drive
Total number of dots
64 460 (293 
×
 220) dots
Power, general
Used batteries
AAA Nickel Metal Hydride batteries (2) 2.4 V
5 V (from USB cable)
Power consumption (when shooting)
1.45 W
Operating temperature range
0
°
C to +40
°
C (32
°
F to +104
°
F)
Storage temperature range
–20
°
C to +60
°
C (–4
°
F to +140
°
F)
Dimensions
84.5 
×
 39.8 
×
 28.6 mm 
(3 3/8 
×
 1 5/8 
×
 1 3/16 inches)
(W/H/D, protruding portions not included)
Mass
Approx. 118 g (4.2 oz) (AAA Nickel Metal Hydride
batteries, “Memory Stick,” and neck strap 
included)
BC-CS1 Ni-MH battery charger
Power requirements
AC 100 to 240V 50/60Hz
2.2 W
Output voltage
Size AA: DC 1.8V, 165 mA 
×
 2
Size AAA: DC 1.8V, 70 mA 
×
 2
 
Dimensions
70 
×
 29 
×
 74 mm (2 7/8 
×
 1 3/16 
×
 3 inches) 
(W/H/D)
Mass
Approx. 70g (2.5 oz.)
Operating temperature range
0
°
C to 40
°
C (32
°
F to 104
°
F)
Accessories
• Size AAA Ni-MH batteries (2) 
• Ni-MH battery charger (1)
• Power cord (mains lead) (1)
• USB cable (1)
• Neck strap (1)
• “Memory  Stick” (8MB) (1)
• CD-ROM (SPVD-008) (1)
• Operating  instructions (1)
Design and specifications are subject to change without notice.
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