Level 2 Debug (Power Sequence); Level 3 Debug (Voltage References) - Intel 6300ESB ICH User Manual

Debug Procedure
6.2

Level 2 Debug (Power Sequence)

Check the items in
Table 7.

Level 2 Debug (Power Sequence)

Item Test
1 Primary power supply voltages
2 1.8 V
3 1.5 V
4 1.8 VSBY
5 CPU VTT power supply
6 CPU0 VRD
7 CPU1 VRD
8 Verify "SYSTEM PWRGD" LED CR2H1: Green
6.3

Level 3 Debug (Voltage References)

Table 8 includes the first items to look at when debugging a board that does not boot.
Table 8. Level 3 Debug (Voltage References)
Item Test
1 MCH DDR2 Channel A Vref
2 MCHDDR2 Channel B Vref
3 MCH Hublink Vref
4 MCH Hublink Vswing
5 ICH Hublink Vref
6 ICH Hublink Vswing
CPU0 VTT Vref
7
(Back side of board)
8 CPU1 VTT Vref
(Back side of board)
9 MCH VTT Vref
10 DIMM A DDR2 Vref
11 DIMM B DDR2 Vref
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34 Intel Xeon™ Processor, Intel
Table 7 below if "SYSTEM PWRGD" is not illuminated.
Pass/Fail Criteria
Measure voltage across:
• C3K2: 3.3 V
• C3K1: -12 V
• C4K3: 5 V
• C4K2: 5 V
• C4K5: 12 V
C9E14: 1.8 V
C5C5: 1.5 V
C9G5: 1.8 V
C9H10: 1.2 V
L9J2: 1.2 V - 1.4 V
L5J1: 1.2 V – 1.4 V
Pass/Fail Criteria
R6D4: 0.9 V
R6B3: 0.9 V
R5F11: 0.354 V
R5F8: 0.804 V
R4G7: 0.347 V
R4G4: 0.696 V
R2U5: 0.775 V
R2V2: 0.775 V
R4U5: 0.754
R5V1: 0.754
R6F2: 0.775 V
R3M1: 0.9 V
R2M1: 0.9 V
®
E7520 Chipset, Intel
Cause of Failure
External power supply failure
DDR2 power supply failure
MCH/PXH/ICH core power supply failure
DDR2 standby power supply failure
CPU_VTT power supply failure
CPU0 VRD Failure
CPU1 VRD Failure
Power Sequence Failure
Cause of Failure
Vref incorrect: check resistor values
Vref incorrect: check resistor values
Vref incorrect: check resistor values
Vswing incorrect: check resistor values
Vref incorrect: check resistor values
Vswing incorrect: check resistor values
Vref incorrect: check resistor values
Vref incorrect: check resistor values
Vref incorrect: check resistor values
Vref incorrect: check resistor values
Vref incorrect: check resistor values
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6300ESB ICH Development Kit User's Manual