Maintenance & Service Guide
Presario 1600 Series Portable Computers
Notice Preface Home Product Description Troubleshooting Illustrated Parts Catalog
Removal & Replacement Procedures Specifications Connector Pin Assignments Battery Pack
Power On Self Test (POST)
Running POST
To run POST, complete the following steps:
Turn off the computer. Let stand for a 10 count, then turn the computer back on.
If POST does not detect any errors, the computer will not beep. This indicates successful completion of POST test. POST has run successfully and boots from the hard drive (or from a bootable diskette if one is installed in the diskette drive).
If POST detects errors, the errors are indicated by screen and/or audible messages. Refer to
codes and their relevant descriptions.
If the system is not functioning well enough to run POST, or if the display is not NOTE: functioning well enough to show POST error messages, refer to the Troubleshooting
tables.
102 162 301 304 601 605 1780 1782
Probable Cause 
Recommended Action
DMA, timers, etc. | Replace the system board. |
|
|
Configuration incorrect
CMOS reflects that an invalid configuration has been set.
RAM failure
Memory test data error 
XX000YZZ RAM failure
Keyboard failure
Run Computer Setup.
Run Computer Setup.
1.Replace the memory modules.
2.Replace the system board.
1.Replace the memory modules.
2.Replace the system board.
Replace the system board.
301-Keyboard Error
1.Ensure the keys are not depressed during POST.
2.Reconnect the keyboard with the computer off.
3.Replace the keyboard.
304-Keyboard or System Unit Error
1. Replace the keyboard.
Keyboard or system board error 2. Replace the TouchPad or mouse. 3. Replace the system board.
601-Diskette Controller Error
Mismatch in drive type or failure in the | 1. | Run Computer Checkup (TEST). |
2. | Check and/or replace cables. | |
diskette controller | 3. | Replace the system board. |
| ||
Mismatch in drive type | Run Computer Setup. | |
1780-Primary Hard Drive 0 Failure
Disk 0 failed to respond 
Hard drive format error
1.Run Computer Checkup (TEST).
2.Replace the hard drive.
1.Run Computer Checkup (TEST).
2.Replace the hard drive.
Hard drive controller failure | 1. | Run Computer Setup. | |
2. | Replace the hard drive. | ||
|
Back to top