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7-2
Sun Enterprise 6500/5500/4500 Systems Reference Manual • April 1998
lists the sources of power supply voltages.
7.1
Safety Precautions
Any servicing of equipment should be performed by qualified personnel.
Observe the precautions in
.
TABLE 7-1
Power Supply Summary
Voltage
Source
Where Used
2.0V
PCM
GTL centerplane termination
3.3V
PCM
CPU/ Board (AC+, DC+s, FHC, SIMMs)
UltraSPARC II Module (SRAMs, SDBs, CPU I/O)
5V
PCM, PPS
SBus, Clock+ Board
UltraSPARC II Module power (via DC/DC converter)
12V
PPS
Peripherals (CD drive, tape drive)
TABLE 7-2
Safety Precautions
Item
Problem
Precaution
Wrist or
foot strap
ESD
Wear a conductive wrist strap or foot strap when
handling power supplies.
ESD mat
ESD
An approved ESD mat provides protection from static
damage when used with a wrist strap or foot strap.
Cover panels
System damage
and overheating
Re-install all cabinet cover panels after performing any
service work on the system.
SBus slot covers
System damage
and overheating
Install SBus slot covers in all unused SBus slots.
Summary of Contents for 5500
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