Check Procedures 47
Hard disk drive LED fails to
light, but system operates
normally.
With the system power on, measure the voltage of
hard disk LED connector CN6 for 2170 or CN14 for
2171/2172. The reading should be:
2170(CN6) 2171/2172(CN14) HDD Idle/Active
pin-1 pin-1 +5 Vdc / --
pin-2 pin-2 +5 Vdc / 0 Vdc
pin-3 pin-3 +5 Vdc / 0 Vdc
pin-4 pin-4 +5 Vdc / -
See “Machine Type 2170 System Board Jumpers
and Connectors” on page 147 and See “Machine
Type 2171 and 2172 System Board Jumpers and
Connectors” on page 150.
Hard drive LED cable.
CD/DVD-ROM Drive
NOTE:
Ensure CD/DVD-ROM drive is configured correctly in BIOS Setup, cable/
jumper are set correctly and its laser beam is clean before diagnosing any
CD/DVD-ROM drive problems.
CD/DVD-ROM drive LED
flashes for more than 30
seconds before LED shutting
off.
Software asks to reinstall disc.
Software displays a reading
CD/DVD error.
CD/DVD may have dirt or foreign material on it.
Check with a known good disc.
CD/DVD is not inserted properly.
CD/DVD is damaged.
CD/DVD-ROM drive LED
doesn't come on but works
normally.
CD/DVD-ROM drive
CD/DVD-ROM drive cannot
load or eject when the system
is turned on and its eject button
is pressed and held.
See “” on page 166 and “CD-ROM Emergency-exit
<option 2>” on page 166.
Disconnect all cables from CD/DVD-ROM drive
except power cable, then press eject button to try to
unload the disk.
CD/DVD-ROM drive power.
CD/DVD-ROM drive
Table 2-3 Error Symptoms List
(Continued)
NOTE:
To diagnose a problem, first find the error symptom in the left column. If directed
to a check procedure, replace the FRU indicated in the check procedure. If no
check procedure is indicated, the first Action/FRU listed in right column is the
most likely cause.
Error Symptoms Action/FRU
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