8-1
C H A P T E R
8
Major Subassemblies
This chapter describes how to remove and replace the system unit’s major
subassemblies.
■
“Power Supply” on page 1
■
“Speaker/LED Cable” on page 5
■
“Internal Speaker” on page 8
8.1
Power Supply
Caution –
When the system power switch is in the Standby position, and the AC
power cord remains connected to a power outlet, hazardous AC voltage is still
present in the power supply primary. Do not attempt to service the power supply
under these conditions. Disconnect the AC power cord prior to handling the power
supply. When servicing any other system component, the AC power cord should
remain connected; it poses no safety hazard.
SPARCstation 4 systems have a 50-watt power supply with an unswitched AC
accessory outlet. SPARCserver 4 systems have a 150-watt power supply, with a
switched AC accessory outlet.
8.1.1
Removing the Power Supply
Caution –
To avoid personal injury or damage to the system board or components,
press the Standby side of the AC power switch before disconnecting the external
power cord from the rear panel.
Summary of Contents for SPARCstation 4 110
Page 24: ...1 6 SPARCstation 4 Model 110 Service Manual July 1996...
Page 36: ...2 12 SPARCstation 4 Model 110 Service Manual July 1996...
Page 46: ...3 10 SPARCstation 4 Model 110 Service Manual July 1996...
Page 108: ...10 4 SPARCstation 4 Model 110 Service Manual July 1996...
Page 146: ...12 6 SPARCstation 4 Model 110 Service Manual July 1996...
Page 150: ...A 4 SPARCstation 4 Model 110 Service Manual July 1996...
Page 160: ...B 10 SPARCstation 4 Model 110 Service Manual July 1996...
Page 174: ...Glossary 4 SPARCstation 4 Model 110 Service Manual July 1996...