Specifications

ReM Service Handbook for SGI Configurations
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Chassis (Front View)-Comments
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Fault and power LEDs. on-off switch, system reset switch, and thermal sensor
reset
switch reside on the PS3 status panel PCA (see page 2-10), located behind
status panel plate.
Power
LED remains lit after system is powered-on; indicates normal DC power.
Fault (yellow)
LED is lit and steady during power-on .self tests (POSTS). After
system passes its
POSTS, fault LED goes out
If system fails its POSTS. fault LED remains lii.
PS3 status panel PCA contains a one-digit hex status display, which displays the
following:
0 During power-up, displays steady. “F“
After system passes its POSTS and goes into the PROM Monitor (System
Maintenance Menu), alternately displays
“1” and ’2”
After system boots IRIX, alternately displays “0“ and “1”
Mode DIP switches also reside on the PS3 PCA and can be configured to nm
different kinds of diagnostics modes during power-up. For normal operation, all
switches arc set to “ON. See page 2-1 1 for setting switches to by-pass POSTS.
Thermal reset switch resets thermal sensor, which is located in the top of the
single towa chassis.
Thd sensor (circuit breaker) located in top of system tower system is shut
down
if tempemhare exceeds 140 OF (a0 OC). Thennal sensor can be reset after
system temperature
cools to 104 OF (40 “C).
System support four front-loading 5.25“ devices. .
no half-height drive bays
’bo full-height drive bays
1O.Full-height drive bays can
be conf@xcd with full or half-height devices.
11.Devices in top drive bays reside on SCSI bus 1; devices in bottom drive bays
12Terrninate
SCSI buses (0 and 1) using a terminator connected to SCSI ports.
l3.SCSI buses can be extended to external devices using SCSI ports.
14.Systems with three BNC connectors sync on green.
15.Keyboard port serial ports reside on PP2 serial YO board.
16.Serial ports 2.3, and 4 have DB9 and &pin DIN connectors, which share Wiring.
reside on SCSI bus 0.
For these serial ports, only one connector at a time can be used.
(0 Great Eastern Technology 11196
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