Texas Instruments Extensa 450 Series - Troubleshooting

START
COMPUTER
TROUBLE
INDICATION
?
DEAD
COMPUTER
SYMTOMS
?
RUN
SELF TEST
ERROR
MESSAGE
?
MODEM
PROBLEM
?
RUN
DIAGNOSTICS
DIAGNOSTICS
ERROR MSG
?
NO
YES
NO
YES
SEE PARAGRAPH
5.3.5
NO
YES
SEE PARAGRAPH
5.3.4
NO
SEE
PARAGRAPHS
5.3.1 & 5.3.2
NO
WHEN POWER SWITCH
SET TO ON,, NO
INDICATION OF POWER;
SCREEN DARK, STATUS
LED's EXTINGUISHED
SET POWER SWITCH
TO ON. SELFTEST
AUTOMATICALLY RUNS
YES
See Appendix D
(PC Doctor)
Figure 5-1 Troubleshooting Flowchart
5-2
Troubleshooting