Service manual

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE
CAUTIONS
(1) Do not place this product in a location that is subject to heavy vibration, or on an unstable surface such as
an inclined surface. The product may fall off or fall over, causing injuries.
(2) Before disconnecting cable from the product, be sure to turn off the power. Be sure to hold the connector
when disconnecting cables. Pulling a cable with excessive force may cause the core of the cable to be
exposed or break the cable, and this can lead to fire or electric shock.
(3) This product should be moved by two or more persons. If one person attempts to carry this product alone,
he/she may be injured.
(4) This product contains glass. The glass may break, causing injuries, if shock, vibration, heat, or distortion
is applied to the product.
(5) The temperature of the glass of the display may rise to 80°C or more depending on the conditions of use.
If you touch the glass inadvertently, you may be burned.
(6) If glass surface of the display breaks or is scratched, do not touch the broken pieces or the scratches with
bare hands. You may be injured.
(7) PDP Module requires to be handled with care not to be touched with metal or hard materials, and must
not be stressed by heat or mechanical impact.
(8) There are some exposed components on the rear panel of this product. Touching these components may
cause an electric shock.
(9) When moving the product, be sure to turn off the power and disconnect all the cables. While moving the
product, watch your step. The product may be dropped or all, leading to injuries of electric shock.
(10) In order to protect static electricity due to C-MOS circuitry of the Drive part, wear a wrist band to protect
static electricity when handling.
(11) If cleaning the Panel, wipe it with a soft cloth moistened with water or a neutral detergent and squeezed,
being careful not to touch the connector part of the Panel. And don’t use chemical materials like thinner
or benzene.
(12) If this product is used as a display board to display a static image, “image sticking” occurs. This means
that the luminance of areas of the display that remain lit for a long time drops compared with luminance
of areas that are lit for a shorter time, causing uneven luminance across the display.
The degree to which this occurs is in proportion to the luminance at which the display is used. To prevent
this phenomenon, therefore, avoid static images as much as possible and design your system so that it
is used at a low luminance, by reducing signal level difference between bright area and less bright area
through signal processing.
(13) Because PDP Module emits heat from the Glass Panel part and the Drive circuitry, the environmental
temperature must not be over 40°C.
The temperature of the Glass Panel part is especially high owing to heat from internal Drive circuitry. And
because the PDP Module is driven by high voltage, it must avoid conductive materials.
(14) If inserting components or circuit board in order to repair, be sure to fix a lead line to the connector
before soldering.
BSV-4251/4251A RD(1) 00 03/10/23 50/75