IBM 9228 Service Guide - Page 108

Table 6. POST beep codes (continued) v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See Chapter 3, "Parts listing, Type 9228 and 9232," on page 19 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a trained service technician. Beep code Description Action 2-4-1 Video failed; system believed operable. 1. Reseat the video adapter. 2. Replace the following components one at a time, in the order shown, restarting the computer each time: a. Video adapter b. (Trained service technician only) System board 3-1-1 Timer tick interrupt test has failed. (Trained service technician only) Replace the system board. 3-1-2 Interval timer channel 2 test has failed. (Trained service technician only) Replace the system board. 3-1-3 RAM test has failed above address 0FFFFh. 1. Reseat the DIMM. 2. Replace the following components one at a time, in the order shown, restarting the computer each time: a. DIMM b. (Trained service technician only) System board 3-1-4 Time-of-day clock test has failed. 1. Reseat the battery. 2. Replace the following components one at a time, in the order shown, restarting the computer each time: a. Battery b. (Trained service technician only) System board 3-2-1 Serial port test has failed. (Trained service technician only) Replace the system board. 3-2-3 Math coprocessor test has failed. Replace the following components one at a time, in the order shown, restarting the computer each time: 1. (Trained service technician only) Optional microprocessor 2. (Trained service technician only) Microprocessor 3. (Trained service technician only) System board 90 IBM IntelliStation Z Pro Type 9228 and 9232: Problem Determination and Service Guide