DPF-V900 - Sony Other Service Manuals Service Manual (repair manual). Page 2

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DPF-V900

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.

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.

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer.

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The Sony DPF-V900 is a digital photo frame for easily displaying
images taken with a digital camera or other device without using
a computer.
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Supports various memory cards used by digital cameras and other
devices, such as a “Memory Stick”, CompactFlash card, SD
memory card, and xD-Picture Card™. Just insert a memory card
removed from a digital camera or other device, then you will be
able to view the images immediately.

■

You can transfer images to the photo frame’s internal memory
from a Bluetooth compatible device via a Bluetooth adaptor
(optional).

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■

Using the photo frame’s HDMI output connector, you can enjoy
the images in a memory card, external device, or internal memory
on a large screen.

■

The displayed image can be switched automatically as though
you are turning the pages of an album yourself. You can select
from various modes including just images, clock, and calendar
view. You can also change playback settings such as the display
order.

■

You can enjoy various view modes, such as displaying an analog
clock, digital clock or calendar.
And the photo frame can display images on single image display,
index image display, zoom in/zoom out or fit to screen mode.

■

The photo frame automatically rotates images to their proper
orientation. Images are also automatically rotated when the photo
frame is set in either the portrait or landscape position.

■

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The images you add to the album are saved to internal memory.

■

You can export images in the album to your memory card.

■

You can enjoy beautiful images by automatic corrections of
backlight, focus, red-eye, and skin smoothing.

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