HP 3000 Series Installation And Service Manual

Maintenance
Table 5-1. Meanings of Self-test LED Indicator Patterns
LED PATTERN
BEING
DISPLAYED
TEST FAILURE SIGNIFIED
BY LED PATTERN
7 6
5 4
3
2 1
0
(WHICH TEST FAILED)
I
* *
None
l
r
*
* *
Basic Instruction
Set Test
I
* * *
ROM Test
* * *
SDLC Test
*
*
*
*
SDLC Test with
DMA
* *
*
BI SYNC Test
*
* *
*
BI SYNC
Test
w· ith DMA
!
0 0 0
0
*
*
*
RAM
Test
*
*
* *
RAM
Test
Parity
Error
* *
* *
Timer
Interrupt
Test
* *
* * *
BISYNC and SDLC
Tests
w/DMA
Legend:
*
=
LED
1 ighted
0
=
When
1 igh ted, the coded pattern signifies
which
l
chip
(bit)
has failed (see table 5-2)
5-9

HP 3000 Series Specifications

General

Brand	HP
Model	3000 Series
Category	Desktop
Language	English