Power Supply Led Errors - IBM 8669 - Eserver xSeries 342 Hardware Maintenance Manual

Error Symptom
Power switch does not work and reset
button does work. There is not a jumper
for forcing power on for the server.
Diskette drive in-use light stays on, or
the system bypasses the diskette drive,
or the diskette drive does not work
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.
Fixed Disk diagnostic does not
recognize drives. Test shows fewer drives
than actually installed.
Fixed Disk diagnostic freezes when run

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:
AC Good LED DC Good LED
Off Off
92
Hardware Maintenance Manual: xSeries 342 Type 8669
FRU/Action
1. Verify that the power-on control jumper on J23 extension cable
is on pins 1 and 2.
2. Power Switch Assembly
3. System Board
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
1. Monitor
2. Run Video Diagnostics. If diagnostics pass, the problem may be a
video driver.
3. Display Adapter / System Board
Remove first drive that does not appear and rerun diagnostic. If the
remaining drives show up, replace the removed drive.
Remove drive being tested at time of freeze and rerun the diagnostic. If
diagnostic completes successfully, replace the removed.
v Power Supply
v Power Backplane
v System Board (with pins 2 and 3 on J23 extension cable connected
together to bypass the power switch; see "System board switches and
jumpers" on page 36).
Description
No power to system or ac
problem.
FRU/Action
1. Check ac power to system.
2. Power Supply