FRP 12: Clock Wire Replacement
AC Repair and Adjustment Procedures
76
Cray Research/Silicon Graphics Proprietary
HMM-168-A
FRP 12: Clock Wire Replacement
The easiest way to remove a clock wire is to drop the rail connector (where the
clock wire connects) into the card cage. This provides improved access (through
the card cage) to the 2-pin clock connectors.
Wiring procedures are more efficient when two people work together. The
individuals can share tasks and check one another’s work.
Part Number
•
One or more of the following clock wire assemblies:
•
15223701 (wire assembly, system clock)
•
15224008 (wire assembly, GigaRing clock)
•
15244601 (wire assembly, master system clock)
•
01775900 (pin connector locks)
Tools Required
•
2-mm and 4-mm hex (allen) wrenches with hex driver
•
#1 and #2 Phillips screwdrivers
•
Camming tool
•
Medium flatblade screwdriver
•
0.05-in. hex (allen) wrench with torque driver
•
0.3-mm mechanical pencil, with no lead (or a wire removal tool)
•
Flashlight
•
Dental pick
•
Tweezers (optional)
•
Hemostats (forceps) or another wire insertion tool (all optional)
•
Cutters/snips
Wire Removal
CAUTION
Observe all ESD precautions. Failure to
do so could result in damage to the
equipment.