Maintenance and Service Guide HP Compaq Pro 6305 Microtower Business PC HP Compaq Pro 6305 Small Form Factor Business PC
Table 10-1 Numeric Codes and Text Messages (continued)
Control panel message Description Recommended action
501-Display Adapter Failure Graphics display controller. 1. Reseat the graphics card (if applicable).
2. Clear CMOS. (See Appendix B,
Password Security and Resetting CMOS
on page 199.)
3. Verify monitor is attached and turned
on.
4. Replace the graphics card (if possible).
510-Flash Screen Image Corrupted Flash Screen image has errors. Reflash the system ROM with the latest BIOS
image.
511-CPU, CPUA, or CPUB Fan not Detected CPU fan is not connected or may have
malfunctioned.
1. Reseat CPU fan.
2. Reseat fan cable.
3. Replace CPU fan.
512-Chassis, Rear Chassis, or Front Chassis
Fan not Detected
Chassis, rear chassis, or front chassis fan is
not connected or may have malfunctioned.
1. Reseat chassis, rear chassis, or front
chassis fan.
2. Reseat fan cable.
3. Replace chassis, rear chassis, or front
chassis fan.
513-Front Chassis fan not detected Front chassis fan is not connected or may
have malfunctioned.
1. Reseat front chassis fan.
2. Reseat fan cable.
3. Replace front chassis fan.
514-CPU or Chassis Fan not Detected CPU or chassis fan is not connected or may
have malfunctioned.
1. Reseat CPU or chassis fan.
2. Reseat fan cable.
3. Replace CPU or chassis fan.
515-Power Supply fan not detected Power supply fan is not connected or may
have malfunctioned.
1. Reseat power supply fan.
2. Reseat fan cable.
3. Replace power supply fan.
601-Diskette Controller Error Diskette controller circuitry or floppy drive
circuitry incorrect.
1. Check and/or replace cables.
2. Clear CMOS. (See Appendix B,
Password Security and Resetting CMOS
on page 199.)
3. Replace the system board.
605-Diskette Drive Type Error Mismatch in drive type. 1. Disconnect any other diskette controller
devices (tape drives).
2. Clear CMOS. (See Appendix B,
Password Security and Resetting CMOS
on page 199.)
660-Display cache is detected unreliable Integrated graphics controller display cache
is not working properly and will be disabled.
Replace system board if minimal graphics
degrading is an issue.
190 Chapter 10 POST Error Messages