Technical data

DIGITAL HiNote Ultra 2000 Service Guide 3–1
3
Troubleshooting
This chapter provides a systematic method of isolating problems with the DIGITAL HiNote
Ultra 2000 notebook computer. It is assumed that you have a basic understanding of DOS-
based computer systems as well as a knowledge of standard troubleshooting procedures. This
manual is written under the assumption that the problems are indeed related to the notebook
computer itself. The improper usage of the system and application software problems are
excluded in this chapter.
The system BIOS power on self-tests (POST) are integral to the system and detect certain
errors with the system board. They use a series of beep codes to identify certain system board
problems.
The troubleshooting procedures, when followed step by step, can help isolate system problems.
Beep Codes
The power on self-tests will issue a sequence of short and long beeps to indicate that an error
has occurred. The following is a list of the beep code sequences and the error condition.
Beep Code Sequence Error Condition
s,s,s,s No RAM detected
s,s,s,l RAM test failed
s,s,l,s BIOS is not shadowed
s,l,s,s BIOS Checksum bad
l,s,l,s No CR code or CR is bad
s,s,s,s,s,s,s,s l,l,l,l l,l,l,l, Crisis Recovery required
s = short beep l = long beep