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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.
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