DSC-T77 - Sony Digital Camera Service Manual (repair manual)

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The components identified by
mark 0 or dotted line with
mark 0 are critical for safety.
Replace only with part num-
ber specified.

Les composants identifiés par une
marque  0  sont critiques pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

2009J0800-1

  © 2009.10

Photo: Black

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Hong Kong Model

Chinese Model

Korea Model

Argentine Model

Thai Model

Japanese Model

Tourist Model

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0

0

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.

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer.

0

Boards requiring use of unleaded solder are printed with the lead-
free 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.)

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.

CAUTION

Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.

— 3 —

1-1

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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”.

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”.

When you replace to the reparing board, write down the sensitivity displayed on the angular velocity sensor (SE510).
Refer to Service Manual ADJ, and perform “Angular velocity sensor sensitivity adj”.

PPP

YYY

YYY:   YAW Sensor sensitivity

SE510

PPP:   PITCH Sensor sensitivity

The sensor sensitivity of SE510 of SY-207 board is written only repair parts.

When replacing the lens, write down the PITCH/YAW data, FN data and wide limit data given on the data sheet of the replacement lens for
service.
Refer to Service Manual ADJ, and perform “Wide Limit adj” and “Angular velocity sensor sensitivity adj”.

XX

YY

F

N

L

1

/L

2

Wide Limit Data (2-byte data)

XXYY

YAW data

PITCH/YAW Data

PITCH data

P.PP / Y.YY

FN Data

FN data

XX

The PITCH/YAW data, FN data and wide limit data of lens
are written only repair parts.

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Copies all images in the internal memory to a “Memory Stick Duo”.

1  Insert a “Memory Stick Duo” into the camera.

2                                  (Manage Memory)        [Memory

Tool]                          [Copy]                           [OK]

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.
You cannot select images to copy.
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 format the internal memory
([Format] in [Memory Tool]).
A new folder is created on the “Memory Stick Duo” and all the data will be copied to it. You cannot
choose a specific folder and copy images to it.

Formats the “Memory Stick Duo” or the internal memory. A commercially available “Memory
Stick Duo” is already formatted, and can be used immediately.

1                                  (Manage Memory)        [Memory

Tool]                          [Format]                         [OK]

Note that formatting permanently erases all data including even protected images.

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”.

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.

By turning off the camera, the write enable setting is reset.

The data can be copied/erased by the operations on the HOME screen. (When erasing the data, execute formatting the internal memory.)

When replacing the SY-207 board, erase the data in internal memory of the board before replacement.

When replacing the SY-207 board, execute formatting and initialize the internal memory after replacement.