Asus ZS551KL Troubleshooting Manual - Page 12

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Asus ZS551KL Troubleshooting Manual
Flash Factory image fail often known as SMT problems.
1.
Monitor the current before/after flash image.
2.
If there is heavy current, check CPU/DDR (U0201) and UFS (U1101) to search
for SMT problems.
3.
If no SMT problems found, demount the shielding on the backside of the CPU.
Check the power on sequence to check power rails below:
(1) C0711.1 (VREG_S4A_1P8)
(2) U0737.1 (VREG_S2A_1P125)
(3) U0813.3 (VREG_S3C_0P6)
(4) U0806.1 (VREG_S8A_0P8)
(5) U0916.1 (VREG_S9A_0P8)
If power on sequence ended at power rails above, try to remount DDR.
1004 DL image fail -DL