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UP1500 User's Manual
Chapter 5
5.1
Hardware Startup
5.1.1
No Video Present
5.1.2
LED Status Indicators
51-0048-1B
Troubleshooting
This chapter discusses troubleshooting aspects for both hardware and software
components during the UP1500 system startup.
Topics covered include:
Video review checklist
!
Status LEDs
!
!
Beep codes
Error recovery procedures
!
Use the following steps to diagnose and fix video problems:
1. Check the AC power cord connection to the AC outlet.
2. Ensure that the monitor is connected and switched on.
3. Check the voltage setting on the chassis power supply (115 Vac in the U.S.).
Always take appropriate electrostatic discharge safety
WARNING:
measures when handling boards or modules.
4. Check that the Alpha 21264B Processor fan is connected and spinning.
5. Turn the system power OFF.
6. Reseat the video card and ensure that it is connected to the monitor.
7. Reseat the DIMMs.
8. Replace the DIMMs.
Two LED indicators, D15 and D16, provide diagnostic information about the
UP1500, including the status of some Alpha 21264B Processor functions.
The LEDs are mounted on the lower edge of the UP1500 board below the
M1535D+ PCI-ISA Bridge and to the right of the internal I/O connector area.
Chapter 5 Troubleshooting
5-1
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