Technical Manual
HDFS-550/551/552 Frame Synchronizer Cards
Publication 81-9059-0606-0, Rev. A
vi
Cautions
•
This equipment contains static sensitive components.
Use anti-static grounding equipment
whenever
handling or servicing modules and components. When circuit modules are removed from the frame,
place them on a flat static-controlled surface. Failure to follow this precaution can result in
component damage due to electrostatic discharge.
•
To prevent damage to equipment when replacing fuses, locate and correct the trouble that caused the
fuse to blow before applying power.
•
Verify that all power supply LEDs are off before removing the power supply or servicing equipment.
•
Use only specified replacement parts.
•
Follow static precautions at all times when handling this equipment.
•
Leave the back of the frame clear for air exhaust cooling and to allow room for cabling. Slots and
openings in the cabinet are provided for ventilation. Do not block them.
•
The front door is part of the fire enclosure and should be kept closed during normal operation.
•
To prevent damage to this equipment read the instructions in this manual for proper input voltage
range.
•
Circuit boards in this equipment are populated with surface mount and FPGA components. Special
tools and techniques are required to safely and effectively troubleshoot and repair modules that use
SMT or FPGA components. For this reason, service and repair of Fortel DTV products incorporating
surface mount technology are supported only on a module exchange basis. Customers should not
attempt to troubleshoot or repair modules that contain SMT components. Fortel DTV assumes no
liability for damage caused by unauthorized repairs. This applies to both in-warranty and out-of-
warranty products.
Power Cord Notices
North American Power Supply Cords
This equipment is supplied with a molded grounding plug (NEMA 5-15P) at one end and a molded
grounding receptacle (IEC 320-C13) at the other end. Conductors are color coded: white (neutral), black
(line) and green or green/yellow (ground).
International Power Supply Cords
This equipment is supplied with a molded grounding receptacle (IEC 320-C13) at one end and a molded
grounding plug (EU1-16P) at the other end. Conductors are CEE color coded: light blue (neutral), brown
(line) and green/yellow (ground). Other IEC 320-C13 type power supply cords can be used if they
comply with the safety regulations of the country in which they are to be installed.