HP 330 Service Handbook

In the above example, FFB is 1111111110(01) in binary. A RAM board
with switches set
to 1111 1111 10 has its top address as FFBFFFFF.
FFB3A900 is below FFBFFFFF and above FF7FFFFF (next 4 Mbyte
RAM block down). Therefore,
the switches on the defective RAM board
would be set to 1111 1111 10.
Boot ROM 8elf- Tests
Table 4-3. LED State Codes In Numerical Order
LEDs Test Activity
0000 0000
No failure
0000 000.
LED ripple (all on, then off in sequence from MSB)
0000 00.0
Resetting I/O
0000 00 ••
Checksumming Boot ROM (or LED ripple)
0000 0.00
Testing top RAM (or maybe the Boot ROM checksum failed)
0000 0 •• 0
Searching for boot extension ROMs
0000 0 •••
Starting test vector list (or LED ripple)
0000 .000
Preloading RAM
0000 .00.
Testing RAM
0000 •• 0.
Checksumming ROM operating systems
0000 ••••
LED ripple
000. 00.0
Testing internal keyboard (or an interrupt line is stuck)
000. 0.00
Testing external key board
000. 0 •• 0
Testing internal HP-IB
000 •• 000
Testing DMA
000 ••• 0.
Checksumming ID /INIT ROM on bit-mapped video board
000 •••• 0
Testing alpha video board
000 • ••••
Testing graphics on alpha/graphics (or LED ripple)
00.0 0000
Testing I/O card on select code 0
through
through
00 •• ••••
Testing I/O card on select code 31, or LED ripple
44 Troubleshooting

HP 330 Specifications

General

Storage	500 GB HDD (7200 rpm)
Operating System	Windows 7 Professional 64-bit
Graphics	Intel HD Graphics
Dimensions	14.88 x 6.89 x 15.02 inches
Processors	Intel Celeron, Pentium, Core i3/i5/i7
Processor	Intel Celeron
USB Ports	4x USB 2.0
Optical Drive	DVD-Writer
Network	Gigabit Ethernet