Battery contacts | Remove the keyboard |
not making good | assembly and examine the |
contact with | battery contacts. Ensure |
battery. | that the battery is making |
| good contact with all 4 |
| contacts. |
| Replace the system board. |
Defective system | Replace the system board. |
board. |
|
ProblemProbable Cause Solution(s)
The computer has a crowbar condition: it powers up for a short period, then shuts off. indicators flash on, then off (this takes place in less than 3 seconds).
Short circuit on | 1. Remove the following | |||
one of | the power | parts | one | at a time |
supply | outputs. | until | the | short circuit |
|
| is located: | ||
NOTE: After verifying that a part is not the cause of the short circuit, reinstall it before removing the next part. In addition, note that the first three parts can be checked by the user.
a. PC card
b. Battery pack c. Hard drive
d. Diskette drive
e. Internal AC power supply
2.Disconnect the display cable from the system board and power the unit up. If the unit powers up, the display cable or display assembly has failed. Plug the display cable back into the system board and attempt to find the defective part in the display assembly by completing the following steps one at a time until the short circuit is located:
a.Disconnect the display cable from the inverter board