Table 2-1 (Page 3 of 15). POST and Advanced Diagnostics Index for
Symptoms, Messages, Error Codes, or Beeps
Symptoms, Messages, Error
Codes, or Beeps
Action/FRU
Hard disk or power-on indicator
LED does not light but machine
functions normally otherwise.
Check J26 voltages with power on:
J26 Hard Disk
Pin Normal Running
1 +5 V dc 0 V dc
2 +5 V dc +5 V dc
3 +5 V dc +5 V dc
4 0 V dc 0 V dc
Pins 1, 2 = Hard Disk Drive
Pins 3, 4 = Power-on LED
LED connection/cable assembly
System board
No beep during POST but
computer works correctly.
As a quick check for the speaker or beeper:
1. Power off the system unit.
2. Disconnect the speaker cable
assembly, if present.
3. Place a jumper on the speaker
connector, pins 1, 2. See “System
Board Layout—Type I-1” on page 5-2
and “System Board Layout—Type I-2”
on page 5-5.
4. Power on the system unit.
5. Listen for a beep from the system
board beeper.
Speaker cable assembly
(if you hear a beep)
System board
Insert a Diskette message
icon appears when a known
good Advanced Diagnostics
diskette is inserted in the 3.5-in.
diskette drive.
Ensure the hard disk drive and diskette
drive are not disabled in the startup
sequence in the Setup Utility.
Hard disk drive preloaded software
Hard disk drive connection/cable/jumpers
Diskette drive connection/cable
Diskette drive
System board
Check Procedures 2-13
To Next Page
Loading...
Need help?
General