IBM 887022X Maintenance Manual - Page 203
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UPC - 000435151957
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Level 3 light path The level 3 light path consists of the LEDs on the top cover of the server (see Figure 28 on page 67). Level 3 light path LED FRU/action 1 (upper SMP Expansi9on Module) 1. Check for level 4 light path LEDs on upper SMP board: a. Disconnect server from power source; then, remove upper SMP Expansion Module and cover. b. Press light path capacitor switch (SW1; see "SMP Expansion Module switches and connectors" on page 178). c. Check board for lit level 4 LEDs (CPU, memory, VRM, SMP board LEDs) (see "SMP Expansion Module LEDs" on page 179). 2. Verify that corresponding module is properly installed. Note: If all VRM LEDs are on, check for missing or improperly installed VRM. 3. Reseat/replace corresponding module (DIMM, VRM, or CPU). 4. Upper SMP board. 2 (lower SMP Expansion Module 1. Check for level 4 light path LEDs on lower SMP board: a. Disconnect server from power source; remove upper SMP Expansion Module; then, remove lower SMP Expansion module and cover. b. Press light path capacitor switch on lower SMP board (SW1; see "SMP Expansion Module switches and connectors" on page 178). c. Check board for lit level 4 LEDs (CPU, memory, VRM, SMP board LEDs) (see "SMP Expansion Module LEDs" on page 179). 2. Verify that corresponding module is properly installed. Note: If all VRM LEDs are on, check for missing or improperly installed VRM. 3. Reseat/replace corresponding module (DIMM, VRM, or CPU). 4. Lower SMP board. 3 (center plane power) 1. If level 2 light path VRM LED is on (see Figure 27 on page 66), replace center plane VRM. 2. Verify all cables and connectors are properly seated. 3. Center plane. 4 (PCI-X power) 1. Check PCI-X board for (see "PCI-X board internal connectors and LEDs" on page 162) for the following lit LEDs: Attention, SERR, PCI-X. 2. Check Operating System event log. 3. Run corresponding adapter card diagnostics, if available. 4. Adapter. 5. PCI-X board. 6. I/O board. 5 (Remote Supervisor Adapter) Remote Supervisor Adapter 6 (I/O board power) 1. If level 2 light path VRM LED is on (see Figure 27 on page 66), replace I/O board VRM. 2. I/O board. Chapter 7. Symptom-to-FRU index 193
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