Page 87 - GIGABYTE Service Manual-v3.0-110101

5.2.9 Memory Bus Fail

Example:
X38-DQ6 NB open identified by:

01. Post code C1.
02. DDR tool measure MDA36 (memory data channel A) open.
03. Multi-meter measure circuit impedance from DDR socket to NB is good.
04. NB swap ok.
Signal Explanation:

Memory Bus include MA, MD, MCLK, CAS, RAS,
DDR tool can sort out memory bus open/shot quickly, but not able to detect all memory
bus signals by DDR tool.

For AMD CPU series memory measurement, CPU needs to be installed first before
using DDR tool.

Figure 5-14: Memory Bus Fail Check

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