Reference codes

Reference codes are diagnostic aids that help you determine the source of a hardware or operating system problem. Using a reference code enables you to find the solution to fix the problem. To use reference codes effectively, you must use them along with other service and support procedures.

• Progress codes
• Service request numbers
• System reference codes (1xxx - Axxx)
• System reference codes (Bxxx)
• System reference codes (Cxxx - Hxxx)
• Reference codes that begin with a number sign (#)