IBM 8668 Hardware Maintenance Manual - Page 124

Power supply LED errors, AC Good LED

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Error Symptom FRU/Action Diskette drive in-use light stays on, or the 1. If there is a diskette in the drive, verify that: system bypasses the diskette drive, or the a. The diskette drive is enabled in the Configuration/Setup utility diskette drive does not work. program. b. The diskette is good and not damaged. (Try another diskette if you have one.) c. The diskette is inserted correctly in the drive. d. The diskette contains the necessary files to start the server. e. The software program is OK. f. Cable is installed correctly (proper orientation) 2. Run Diskette Drive Diagnostics. 3. Cable 4. Diskette Drive 5. System Board Monitor problems (general). Some IBM monitors have their own self-tests. If you suspect a problem with the monitor, refer to the information that comes with the monitor for adjusting and testing instructions. 1. Monitor 2. Run Video Diagnostics. If diagnostics pass, the problem may be a video driver. 3. Display Adapter / System Board Drives not recognized by the Fixed Disk diagnostic. (e.g. you have 6 drives but the fixed disk test only shows 3) 1. Remove the first drive that did not show up. 2. Rerun the fixed disk diagnostic. 3. If successful, replace the drive you removed. Power supply LED errors Use the power supply LED information on the following page to troubleshoot power supply problems. AC Good LED Off Note: The minimum configuration required for the DC Good light to come on is: v Power Supply v One processor and VRM (With pins 2 and 3 on J23 extension cable connected together to bypass the power switch; see "Operator information panel" on page 11. v 2 stick 128 mb memory (total 256) (Verify that System Board are properly connected together; see "System board option connectors" on page 40. DC Good LED Off Description No power to system or ac problem. FRU/Action 1. Check ac power to system. 2. Power Supply 3. Power AC Inlet Box 116 Hardware Maintenance Manual: xSeries 232, Type 8668

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Error Symptom
FRU/Action
Diskette drive in-use light stays on, or the
system bypasses the diskette drive, or the
diskette drive does not work.
1.
If there is a diskette in the drive, verify that:
a.
The diskette drive is enabled in the Configuration/Setup utility
program.
b.
The diskette is good and not damaged. (Try another diskette if
you have one.)
c.
The diskette is inserted correctly in the drive.
d.
The diskette contains the necessary files to start the server.
e.
The software program is OK.
f.
Cable is installed correctly (proper orientation)
2.
Run Diskette Drive Diagnostics.
3.
Cable
4.
Diskette Drive
5.
System Board
Monitor problems (general).
Some IBM
monitors have their own self-tests. If you
suspect a problem with the monitor, refer
to the information that comes with the
monitor for adjusting and testing
instructions.
1.
Monitor
2.
Run Video Diagnostics. If diagnostics pass, the problem may be a
video driver.
3.
Display Adapter / System Board
Drives not recognized by the Fixed Disk
diagnostic. (e.g. you have 6 drives but the
fixed disk test only shows 3)
1.
Remove the first drive that did not show up.
2.
Rerun the fixed disk diagnostic.
3.
If successful, replace the drive you removed.
Power supply LED errors
Use the power supply LED information on the following page to troubleshoot
power supply problems.
Note:
The minimum configuration required for the DC Good light to come on is:
v
Power Supply
v
One processor and VRM (With pins 2 and 3 on J23 extension cable
connected together to bypass the power switch; see “Operator information
panel” on page 11.
v
2 stick 128 mb memory (total 256) (Verify that System Board are properly
connected together; see “System board option connectors” on page 40.
AC Good LED
DC Good LED
Description
FRU/Action
Off
Off
No power to system or ac
problem.
1.
Check ac power to system.
2.
Power Supply
3.
Power AC Inlet Box
116
Hardware Maintenance Manual: xSeries 232, Type 8668