HP TC2120 - Manual (Page 67)

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Chapter 5 Error Messages
Beep Codes
If the POST routines cannot display messages when an error occurs before the video display is initialized, the
hp server emits a buzzing sound followed by a series of beeps. If you get a blank screen on boot, but hear beeps,
count the beeps and refer to the table below to interpret their meaning. If you miss the beep code, power off the
server and then power it on again and listen for the signal.
Number of Beeps Meaning Corrective Action
1 short beep The video controller is
functioning. This is not an error. It simply indicates that the
video is functioning. No action is required.
1 long beep (repeated) DDR-SDRAM failed to
initialize. 1. Verify that all DIMMS are HP qualified and
correctly seated in the DIMM slots. See
“Memory Modules” in Chapter 3 .
2. Reboot the server.
3. If the problem persists, contact your HP
Customer Support provider.
1 long beep followed
by 3 short beeps Video error. 1. Set configuration switch 4 to the On position
to clear the CMOS. See “Clearing the
CMOS and Passwords” in Chapter 4 .
2. Reboot the server:
• If the message “CMOS is cleared...”
appears, the problem is fixed. Follow the
onscreen instructions and reboot the
server.
• If no message appears, contact your HP
Customer Support provider.
1 short beep (lower
volume) The system is going to
S0 (On) in Advanced
Power Management
(APM) mode. This is not an error. It indicates that the system
is waking up. No action is required.
3 short beeps (lower
volume) The system is going to
S1 (Standby) in
Advanced Power
Management (APM)
mode. This is not an error. It indicates that the system
is entering standby mode. No action is required.