Figure C–1
PTCs on the Main Logic Board
Keyboard and Mouse PTC
The keyboard and mouse PTC protects the keyboard and mouse from short circuits
or overcurrent. If you power on the system and any of the following occurs, the
keyboard and mouse PTC may be open.
4
The keyboard speaker does not beep.
4
The four LEDs on the keyboard do not flash when power is turned on to the
system unit.
4
A message is displayed on the system monitor:
No keyboard connected.
Ethernet PTC
The Ethernet PTC protects the Ethernet transceiver from short circuits or overcurrent.
If you plug the Ethernet cable into the MLB and the Ethernet transceiver LED does
not light, the Ethernet PTC may be open.
184
SPARCstation 10 Service Manual
♦
Revision A, July 1993
Summary of Contents for 1.0
Page 2: ...USA 650 960 1300 fax 650 969 9131 ...
Page 3: ...SPARCstation 10 Service Manual Part No 800 6358 11 Revision A July 1993 ...
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Page 21: ...Figure 1 6 Exploded View of the SPARCstation 10 System MLB System Overview 5 ...
Page 26: ...Figure 2 1 Default Boot Mode Flowchart 10 SPARCstation 10 Service Manual Revision A July 1993 ...
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Page 220: ...Glossary 204 SPARCstation 10 Service Manual Revision A July 1993 ...
Page 221: ...Index Index 205 ...