Index) set to Auto): approx. 0.1 to 3.0 m
(4 inches to 9 feet 10 1/8 inches) (W)/
approx. 0.25 to 2.5 m (9 7/8 inches to 8
feet 21/2 inches) (T)
[Input and Output connectors]
Multi connector
Video output
Audio output (mono)
USB communication: Hi-Speed USB (USB 2.0
compliant)
[LCD screen]
LCD panel: 6.2 cm (2.5 type) TFT drive
Total number of dots: 230 400 (960×240) dots
[Power, general]
Power: Rechargeable battery pack NP-BG1, 3.6 V
AC-LS5K AC Adaptor (not supplied), 4.2 V
Power consumption (during shooting): 1.0 W
Operating temperature: 0 to 40°C (32 to 104°F)
Storage temperature: –20 to +60°C (–4 to +140°F)
Dimensions: 89.7×55.7×22.8 mm (3 5/8×
Output voltage: DC 4.2 V, 0.25 A
Operating temperature: 0 to 40°C (32 to 104°F)
Storage temperature: –20 to +60°C (–4 to +140°F)
Dimensions: Approx. 62×24×91 mm (2 1/2×
31/32×3 5/8 inches) (W/H/D)
Mass: Approx. 75 g (2.7 oz)
Rechargeable battery pack NP-BG1
Used battery: Lithium-ion battery
Maximum voltage: DC 4.2 V
Nominal voltage: DC 3.6 V
Capacity: 3.4 Wh (960 mAh)
Design and specifications are subject to change
without notice.
DSC-T20/T25_L2
— 2 —
Model information table
Model
Destination
• Abbreviation
AR : Argentine model
AUS: Australian model
BR : Brazilian model
CH : Chinese model
CND: Canadian model
EE : East European model
HK : Hong Kong model
J: Japanese model
JE : T our ist model
KR : Korea model
NE : North European model
TW : Taiwan model
US, CND, AEP, UK, E, AUS,
HK, CH, KR, AR, BR, J, JE
DSC-T20
DSC-T25
AEP, E, AUS, HK
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 .
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.
DSC-T20/T25_L2
Danger of explosion if battery is incorrectly replaced.
CAUTION
Replace only with the same or equivalent type.
SAFETY-RELATED COMPONENT WARNING!!
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQUES 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.
Unleaded solder
Boards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
— 3 —
TABLE OF CONTENTS
SectionTitlePage
1.SERVICE NOTE
1-1. Precaution on Replacing the SY-170 Board ····················1-1
1-2. Self-Diagnosis Function ··················································1-1
1-3. Process After Fixing Flash Error····································· 1-2
1-4. Method for Copying or Erasing the Data in Internal
5-1. Exploded Vie ws ·······························································5-2
5-2. Electrical Parts List ························································· 5-5
DSC-T20/T25_L2
— 4 —
ENGLISHJAPANESE
1. SERVICE NOTE
ENGLISHJAPANESE
1-1. PRECAUTION ON REPLACING THE SY-170 BOARD
DESTINATION DATA
When you replace to the repairing board, the written destination data of repairing board also might be changed to original setting.
Refer to Service Manual ADJ, and perform “DESTINATION DATA WRITE”.
USB SERIAL No.
The set is shipped with a unique ID (USB Serial No.) written in it.
This ID has not been written in a new board for service, and therefore it must be entered after the board replacement.
Refer to Service Manual ADJ, and perform “USB SERIAL No. INPUT”.
1-2. SELF-DIAGNOSIS FUNCTION
1-2-1. Self-diagnosis Function
When problems occur while the unit is operating, the self-diagnosis
function starts working, and displays on the LCD screen what to
do.
Details of the self-diagnosis functions are provided in the Instruction
manual.
LCD screen
Blinks at 3.2 Hz
0 0
Refer to “1-2-3. Self-diagnosis Code Table”.
Repaired by:
C : Corrected by customer
E : Corrected by service
engineer
3 2C
Block
Indicates the appropriate
step to be taken.
E.g.
13 ....Format the “Memory Stick Duo”.
32 ....Turn on power again.
1-2-2. Self-diagnosis Display
When problems occur while the unit is operating, the LCD screen
shows a 4-digit display consisting of an alphabet and numbers, which
blinks at 3.2 Hz. This 5-character display indicates the “repaired
by:”, “block” in which the problem occurred, and “detailed code”
of the problem.
Detailed Code
DSC-T20/T25_L2
1-1
1-2-3. Self-diagnosis Code Table
Self-diagnosis Code
ENGLISHJAPANESE
ENGLISHJAPANESE
Function
Repaired by:
C
C
Block
13
32
Detailed
Code
01
01
Symptom/State
The internal memory has experienced a
format error.
“Memory Stick Duo” is unformatted.
“Memory Stick Duo” is broken.
“Memory Stick Duo” type error
The camera cannot read or write data
on the “Memory Stick Duo”.
Trouble with hardware
Format the internal memory.
Format the “Memory Stick Duo”.
Insert a new “Memory Stick Duo”.
Insert a supported “Memory Stick Duo”.
Turn the power off and on again, or taking out and inserting the
“Memory Stick Duo” several times.
Turn the power off and on again.
Retry turn the power on by the power switch. If it does not
E
61
00
Difficult to adjust focus
(Cannot initialize focus)
recover, check the focus reset sensor of lens block (pin ea of
CN401 on the SY-170 board). If it is OK, check the focus motor
drive IC (IC401 on the SY-170 board).
Retry turn the power on by the power switch. Check the zoom
reset sensor of lens block (pin wk of CN401 on the SY-170
board), if zooming is performed when the zoom button is
operated. If it is OK, check the zoom motor drive IC (IC401 on
Check or replacement of the IC for steadyshot (IC503 on the SY170 board).
Check or replacement of the IC for steadyshot (IC503 on the SY170 board).
Check the HALL element (PITCH) of optical image stabilizer
E
62
11
Lens overheating (PITCH).
(pin 1, 2 of CN401 on the SY-170 board). If it is OK, check
PITCH angular velocity sensor (SE502 on the SY-170 board)
peripheral circuits.
Check the HALL element (YAW) of optical image stabilizer (pin
E
62
12
Lens overheating (YAW).
6, 7 of CN401 on the SY-170 board). If it is OK, check YAW
angular velocity sensor (SE501 on the SY-170 board) peripheral
circuits.
E
E
E
62
91
92
20
01
00
Abnormality of thermistor.
Abnormality when flash is being charged.
Non-standard battery is used.
Check the OIS temp sensor of optical image stabilizer (pin 5 of
CN401 on the SY-170 board).
Checking of flash unit or replacement of flash unit. (Note)
Use the compatible battery only.
Note: After repair, be sure to perform “1-3. PROCESS AFTER FIXING FLASH ERROR”.
Correction
1-3. PROCESS AFTER FIXING FLASH ERROR
When “FLASH error” (Self-diagnosis Code E : 91 : 01) occurs, to prevent any abnormal situation caused by high v oltage, setting of the flash
is changed automatically to disabling charge and flash setting.
After fixing, this setting needs to be deactivated. Flash error code can be initialized by the operations on the HOME screen.
Method for Initializing the Flash Error Code
Initialize
Initializes the setting to the default setting. Even if you execute this function, the images
stored in the internal memory are retained.
1 Select [Initialize] with v/V/b/B, then press z.
The message “Initialize all settings” appears.
2 Select [OK] with v, then press z.
The settings are reset to the default setting.
To cancel the resetting
Select [Cancel] in step 2, then press z.
•Make sure that the power is not disconnected during resetting.
DSC-T20/T25_L2
1-2
ENGLISHJAPANESE
ENGLISHJAPANESE
1-4. METHOD FOR COPYING OR ERASING THE DATA IN INTERNAL MEMORY
The data can be copied/erased by the operations on the HOME screen. (When erasing the data, execute formatting the internal memory.)
Note 1: When replacing the SY-170 board, erase the data in internal memory of the board before replacement.
Note 2: When replacing the SY-170 board, execute formatting and initialize the internal memory after replacement.
Method for Copying the Data in Internal Memory
Copy
Copies all images in the inter na l memo r y to a “Memory Stick Duo”.
1 Insert a “Memory Stick Duo” having 32 MB or larger capacit y.
2 Select [Copy] with v/V/b/B on the control button, then press z.
The message “All data in internal memory will be copied” appears.
3 Select [OK] with v, then press z.
Copying starts.
To cancel the copying
Select [Cancel] in step 3, then press z.
• Use a fully charged battery pack. If you attempt to copy image files using a battery pack with little
remaining charge, the battery pack may run out, causing copying to fail or possibly corrupting the data.
• Y ou cannot copy individual images.
• The original images in the internal memory are retained even after copying. To delete the contents of the
internal memory, remove the “Memory Stick Duo” after copying, then execute the [Format] command in
[ Internal Memory Tool] .
• When you copy the data in the internal memory to the “Memory Stick Duo”, all the data will be copied.
You cannot choose a specific folder on the “Memory Stick Duo” as the destination for the data to be
copied.
• Even if you copy data, a DPOF (Print order) mark is not copied.
Method for Formatting the Internal Memory
This item does not appear when a “Memory Stick Duo” is inserted in the camera.
Format
Formats the internal memory.
• Note that formatting irrevocably erases all data in the internal memory, including even protected images.
1 Select [Format] with v/V/b/B on the control button, then press z.
The message “All data in internal memory will be erased” appears.
2 Select [OK] with v, then press z.
The format is completed.
To cancel the formatting
Select [Cancel] in step 2, then press z.
DSC-T20/T25_L2
1-3
ENGLISHJAPANESE
ENGLISHJAPANESE
1-5. HOW TO WRITE DATA TO INTERNAL MEMORY
Usually, the camera has been set so as to disable the data writing from the PC to the internal memory of the camera.
This setting must be changed temporarily when the data is to be written to the internal memory such as a case after the board replacement.
To change the setting, use the write enable tool “WriteEnableTool.exe”.
Data writing method
1)Connect the PC to the camera (USB mode: Mass Storage), and switch the driver to the “Sony Seus USB Driver”.
2)Start the Write Enable Tool and the SeusEX.
3)Click the [Activate Write Enable Mode] button of the Write Enable Tool.
4)Upon completion of the setting change, the following message will be displayed.
5)Return the driver to the original one, and connect the PC to the camera (USB mode: Mass Storage).
6)Write the data read out into the PC to the internal memory of the camera.
7)Disconnect the PC from the camera, and turn off the camera.
Note: By turning off the camera, the write enable setting is reset.
Short-circuit between the two points
with the short jig about 10 seconds.
To avoid the spark with the metal plate,
wrap the short jig with the insulation tape.
R:1 kΩ/1 W
(Part code: 1-215-869-11)
Charging
Capacitor
2. DISASSEMBLY
• Make sure that the flat cable and flexible board are not cracked of bent at the terminal.
Do not insert the cable insufficiently nor crookedly.
• When remove a connector, don’t pull at wire of connector. It is possible that a wire is snapped.
• When installing a connector, don’t press down at wire of connector.
It is possible that a wire is snapped.
• Do not apply excessive load to the gilded flexible board.
Cut and remove the part of gilt
which comes off at the point.
(Be careful or some
pieces of gilt may be left inside)
DISCHARGING OF THE ST-163 BOARD’S CHARGING CAPACITOR (C901)
The charging capacitor (C901) of the ST-163 board is charged
up to the maximum 300 V potential.
There is a danger of electric shock by this high voltage when the
capacitor is handled by hand. The electric shock is caused by
the charged voltage which is kept without dischar ging when the
main power of the unit is simply turned off. Therefore, the
remaining voltage must be discharged as described below.
Preparing the Short Jig
As the discharging location is in depths, the short jig may touch
to the opening of frame.
Expose the tip of resistor of 1kΩ /1 W (1-215-869-11) by 1mm
and insulate the rest of it with insulation tape.
to about 1mm
1 kΩ/1 W
to about 1mm
Wrap insulating tape.
DSC-T20/T25_L2
2-1
HELP
EXPLODED VIEW
HELP
2-1. DISASSEMBLY
2-1-1. OVERALL SECTION
Follow the disassembly in the numerical order given.
1 Cabinet (Front) Assy (1-1 to 1-3)
2 Lens Block (2-1 to 2-2)
3 Cabinet (Rear) Assy (3-1 to 3-6)
Note: Speaker cable cautions
As the wire of speaker is fragile, disconnect the
connector carefully to prevent damage it.
3-6
3-1 (#72)
1-2 (#18/#29)
HARDWARE LIST
3-5 (claw)
3-4 (claw)
3-3 (claw)
1 Cabinet (Front)
Assy
1-3 (#18/#29)
Note: High-voltage cautions
Discharging the Capacitor
Short-circuit between the two points
with the short jig about 10 seconds.
To avoid the spark with the metal plate,
wrap the short jig with the insulation tape.
3-2 (#72)
1-1 (#18/#29)
2-1
3 Cabinet (Rear) Assy
2 Lens Block
HELP
2-2
DSC-T20/T25_L2
Charging
Capacitor
R:1 kΩ/1 W
(Part code: 1-215-869-11)
2-2
EXPLODED VIEW
2-1-2. SY-170 BOARD SECTION
Follow the disassembly in the numerical order given.
1 SY-170 Board (1-1 to 1-6)
2 Flash Block (2-1 to 2-4)
HARDWARE LIST
2-2 (claw)
2-4
2-3 (claw)
1-3
53
ST-163
2 Flash Block
ST-161
1-2
1-1
2-1 (hook)
SY-170
1-6 (hook)
1-5 (claw)
DSC-T20/T25_L2
1-4 (#72)
1 SY-170 Board
2-3
2-1-3. FRAME SECTION
Follow the disassembly in the numerical order given.
1 LCD Block (1-1 to 1-2)
2 Battery Holder Assy (2-1 to 2-4)
3 BT-034 Flexible Board (3-1 to 3-2)
2 Battery Holder Assy
EXPLODED VIEW
1 LCD Block
1-1 (claw)
2-3 (claw)
2-2 (claw)
3-1 (fook)
3-2 (fook)
2-1 (claw)
3 BT-034 Flexible Board
1-2 (claw)
2-4
DSC-T20/T25_L2
2-4E
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