903-0628-00 Rev. 1
Model 903-HD User's Guide – FMB-X-2.5
Focal Technologies Corp.
Page 6-4
The figure below shows an exploded view of a Model 903 high density 4VID remote module.
903-0061-01
3U-160 SUB-RACK, 12HP
903-0174-00
BACK COVER
4X #6-32X.25" FLAT HEAD
SS PHILLIPS SCREWS
4X M2.5X14mm CHEESE HEAD
SS SLOTTED SCREWS
4X #4-40X.25" PAN HEAD
SS PHILIPS SCREW
FAN
4X #6-32X1.375" PAN HEAD
SS SLOTTED SCREWS
903-0020-04
PCB MOUNT
2X M2.5X10 CHEESE HEAD
SS SLOTTED SCREWS
Figure 6-4: Exploded View of a Model 903 High Density 4VID Remote Card Cage
6.2 Cooling
Forced air cooling, or equivalent conductive cooling of the Model 903 modules is necessary to maintain the
warranty. Modules used inside enclosures, such as ROV electronics cases, must be cooled using forced
convection. Air cooling extends the ambient temperature range of operation and lifetime of the active
components.
Each remote and console unit has a DC fan located on the top of the module. The fan is connected to DC
power (MOLEX: 22-01-3027) on the backplane boards. Fans may be removed as long as other devices are
present to provide the same circulation and forced air cooling.
Summary of Contents for Focal 903
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