NEC PowerMate 466M, Руководство по обслуживанию

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Options 3-19
Video DRAM Module Troubleshooting
If a fault occurs at power-on, verify that the reassembly was performed correctly. One beep
indicates that the computer has completed its power-on self-test. If intermittent beeping oc-
curs, turn off the computer and try again. If the beeping persists, see Section 4, Mainte-
nance and Troubleshooting.
Table Section 3-9 summarizes problems that may develop after installing a video DRAM
module and lists in sequential order suggested corrective actions.
Table Section 3-9 Video DRAM Module Problems and Solutions
Problem Symptom Solution
No power Power lamp on computer
status panel will not light. 1 . Check that the power cord is plugged into
the AC connector on the computer. Check that
the other end of the cord is plugged into a live
properly grounded AC power outlet.
Operating
system does
not boot An invalid configuration
message is displayed.
1 . Press
F2
to run setup and view parameters.
Video DRAM
malfunction Cache memory is not
recognized. 1 . Reseat the video DRAM module checking
for bent pins and correct orientation.
2 . Replace video DRAM module.
3 . Replace system board.
Keyboard or
mouse
malfunction Monitor has prompt, but
cannot input data. 1 . Check that the keyboard is plugged in.
2 . Check that the mouse is plugged in.