IBM N51 Series

(CONTINUED)
007 (continued)
DO ALL SYSTEM STATUS INDICATORS REMAIN OFF
AFTER POWER ON?
Yes No
008
Go to Step 016 on page 119.
009
– Remove the following if installed:
 Battery packs
 Backup battery
 IC DRAM card
 Internal Data/Fax modem
 Serial adapter
 Numeric keypad
 Math coprocessor
 Mouse
 External display
– Go to Step 010.
010
– Plug in the AC adapter and power-on the computer.
DOES ANY INDICATOR REMAIN ON?
Yes No
011
– Power-off the computer and remove the following.
 Hard disk drive
 Diskette drive
 LCD cables
 Keyboard flexible cables
– Power-on the computer again.
– Go to Step 013.
012
Suspect one of the options or devices.
– Reinstall each of the options or devices to the computer
one at a time, and power-on the computer to see if the
original problem occurs.
– Replace the last installed option or device when the
problem occurs.
013
(Step 013 continues)
118 IBM Mobile Systems HMM - Volume 1