Pioneer Pure Vision PDP-425CMX Newsletter
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P
I
RODUCT
NFORMATION
PDP- 425CMX – Fan Control
B
:
ACKGROUND
The fans in the PDP-425CMX professional plasma display panel are designed for a wide range of
environments; from quiet and often cool locations such as museums and corporate conference rooms to
boisterous spots like bars and retail stores. The fans respond to the internal temperature but are heavily
affected by the installation site. In warm locations, the fans turn on frequently to cool the panel's
electronics while installations with moderate temperatures require less fan activity.
Some factors that influence fan activation are the mounting orientation (vertical or portrait positioning,
angled using a ceiling mount, etc.) and whether a communication card is inserted in a panel slot. The
plasma display readily recognizes cards from Pioneer so these cards have little to no effect on the
panel's internal temperature. Cards from other manufacturers may raise the temperature. Internal logic
adjusts the automatic fan activation for the various mounting options and card types.
Occasionally, fan sound may change noticeably in pitch. As the internal temperature changes, the fans
slow down or speed up as needed. This pitch fluctuation is normal and part of the 30-second lag between
fan rotation adjustments.
Although the internal temperature may fall below the standard operating range, the fans remain ON,
rotating at a very low speed. Again, this is normal for the panel. Avoid manually turning fans OFF as
unmonitored/uncontrolled internal temperatures can damage the panel or the installation site.
D
:
ETAILS
As an added card increases the panel's internal temperature, the fans rotate faster and more frequently.
The chart below indicates the affect card types have on fan rotation.
Automatic Fan
Rotation
Fan Off ↔ Low
Fan Low ↔ Medium
Fan Medium ↔ High
Abnormal Temperature*
*Abnormal temperatures cause the panel to automatically shut down.
Data provided by James Liu & Jerry Backstrom
Pioneer Electronics (USA) Inc.
B
ULLETIN
No Card or a
Pioneer Card
154° F (68° C)
158° F (70° C)
165° F (74° C)
180° F (82° C)
Page 1 of 2
Card From Another
Manufacturer
131° F (55° C)
149° F (65° C)
156° F (69° C)
180° F (82° C)
,Product Management & Technical Support
PIB # 351402
Updated: 22 May 2006