Diagnostic Codes And Errors; Diagnostic Led And Audible (Beep) Codes - HP Z230 Maintenance And Service Manual

Diagnostic codes and errors

This section presents information about diagnostic LED codes, LED color definitions, and POST error
messages to help you troubleshoot problems.

Diagnostic LED and audible (beep) codes

This section describes the front panel LED error and operation codes as well as the audible codes
that might occur before or during the POST.
Activity
Blue Power LED
beeps.
Blue Power LED
every two seconds.
beeps.
Blue Power LED
No beeps.
Blue Power LED
three times*, once per
second. No beeps.
*
Blue Power LED
four times*, once per
second. No beeps.
*
User-selectable for details.
For the following LED activity and beeps, the beeps are heard through the chassis speaker. Blinks and beeps repeat for
five cycles, after which, only the blinks continue to repeat.
Red Power LED blinks
two times, once every
second, followed by a
two-second pause. Two
beeps.
Red Power LED blinks
three times, once every
second, followed by a
two-second pause. Three
beeps.
92 Chapter 4 Diagnostics and troubleshooting
Possible cause
on. No Computer on.
*
blinks Computer in Sleep
*
mode (S3-Suspend to
No
*
RAM). Select models
only.
is off. Computer in Hibernate
* *
mode (S4-Suspend to
disk) or system is off
(S5).
blinks Computer in Sleep
*
mode (S3-Suspend to
RAM). Select models
only.
blinks Computer in Hibernate
*
mode (S4-Suspend to
disk).
CPU thermal protection
activated by either of
the following methods:
A fan might be
●
blocked or not
turning.
The heatsink and
●
fan assembly is not
properly attached
to the CPU.
CPU not installed (not
an indicator of bad
CPU).
Recommended action
CAUTION: Internal components might be powered even when
the computer is off. To prevent damage, disconnect the
computer power cord before you remove a component.
1. Make sure that the computer air vents are not blocked and
the cooling fan is running.
2. Open the access panel, press power button, and verify that
the CPU fan is spinning. If the CPU fan is not spinning,
make sure the fan cable is plugged into the computer board
header. Make sure the fan is fully and properly seated or
installed.
3. If fan is plugged in and seated properly, but is not spinning,
the problem might be in the CPU fan. Contact HP for
assistance.
4. Verify that the fan assembly is properly attached. If
problems persist, there might be a problem with the CPU
heatsink. Contact HP for assistance.
1. Verify that the CPU is present.
2. Reseat the CPU.
N/A