v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 3, “Parts listing, System x3200 M2 Types 4367 and 4368,” on page 33 to determine whichcomponents 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 atrained service technician.System-error log message ActionSystem shut off due to system board undertemperature 1. Make sure that the fans have good airflow and are notobstructed.2. (Trained service technician only) Replace the system board.System shutoff due to +12V over voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.System shutoff due to +12V under voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.System shutoff due to +2.5V over voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.System shutoff due to +2.5V under voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.System shutoff due to +3.3V over voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.System shutoff due to +3.3V under voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.System shutoff due to 1.5V CPU over voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.System shutoff due to 1.5V CPU under voltage 1. Reseat the following components:a. Hot-swap power supplies, if any are installedb. Power supply cables on the system board2. (Trained service technician only) Replace the system board.224 System x3200 M2 Types 4367 and 4368: Problem Determination and Service Guide