System Board Description; Table 1-1 Safety Precautions - Sun Microsystems SPARCcenter 2000 Manual

1
Item Problem
Ac power cord ESD (Electrostatic
discharge)
Electric shock
ESD mat & wrist ESD
or foot strap
System boards ESD
Breakage
Springfingers Personal injury
RFI leakage
Damaged springfingers
Cover panels System damage and
overheating
Filler panels System damage and
overheating

1.3 System Board Description

1-2
Table 1-1 Safety Precautions
Precaution
The power cord provides a ground path for the cabinet. Do not unplug the
cord, even if the power is turned off.
Turn the cabinet circuit breaker OFF before opening the cabinet for service.
Use a cushioned, antistatic mat and a grounding strap for these
procedures.
Handle a system board by the edges only.Store boards in antistatic bags.
Parts on a board may break if the board is flexed. Keep the board vertical
when out of the card cage. Place the board on a cushioned mat for service.
Springfingers have sharp edges, so handle springfinger-equipped screens
and boards carefully.
The screens and panels used on the cabinet suppress radio frequency
interference (RFI) and are required by law in many localities.
Replace any screen or board having broken or twisted springfingers with a
new assembly.
Install all cover panels to keep out foreign objects and prevent overheating.
Install filler panels in all unused card cage slots. Open slots severely
reduce the cooling capability of the system.
Figure 1-1 identifies the major components on the system board.
SPARCcenter 2000 System Board Manual—October 1994