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3.
Set the power switch to ON. Observe the eight LEDs on the top of the A990 CPU card.
If
the computer passes the self-test, the LEDs will display one of the following values within 20
seconds. Any other LED display indicates a self-test failure. Refer to Chapter 3 for
troubleshooting information.
000001*1- VCP program is running; VCP console is connected.
000000*0 - VCP program is running; VCP console is not connected, that is, VCP is waiting
for the VCP console to respond to the first Enq/ Ack handshake.
00000001 - Loader is running.
00000000 - User software is running.
10000000 - Loader error. Probably a checksum error; change media on loading device.
where:
1
=
LED lit; 0
=
LED unlit; *
=
LED blinking
Computer Mounting
Table Mounting
The computer may be used as a freestanding instrument in a land-based environment. The only
considerations are that adequate space should be allowed at the front and rear to ensure full
intake and exhaust of ventilating air, and that all covers are installed. Also, a minimum of 38
centimeters (15 inches) of clearance behind the computer is required when removing and
installing plug-in cards.
Rack Mounting
You can mount the A990 Computer in any standard 19-inch cabinet, such as the HP 29429A or
HP 29431G. The usual location for the computer is at the bottom of the cabinet. Refer to the
manuals supplied with your cabinet for specific information on installing mounting rails, installing
the computer chassis, and grounding requirements.
When installing the HP 2959A CPU or the HP 2999A SPU in a cabinet, connect one end of the ac
power cord to the ac power socket in the chassis and the other end to the Power Distribution Unit
(PDU) mounted on the back door of the cabinet. To access the PDU, make sure the Main Power
switch is set to OFF, then remove the four screws that secure the PDU access panel.
2-14
Installation
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